Nevada Uranium and Thorium Occurrences
NO. 1
NAME 8 Spot group (8
claims), Lucky Bird group (Nos. 1-17)
OTHER NAME Spot-Lucky
Bird groups
COUNTY Carson City
LOCATION Center
N½ Sec. 27, T15N, R20E
UTMN 4335780
UTME
264600
DISTRICT Carson City
QUAD New Empire
7.5' (1994)
DEVELOPMENT Several bulldozer trenches and
pits.
RADIOACTIVITY Background = 0.015 mR/hr, High = 0.06
mR/hr
GEOLOGY Abnormal radioactivity occurs along a N80ºW
vertical fault in slightly bleached, iron-stained meta-andesite of probable
Mesozoic age. A 2-inch-wide gouge zone is the most radioactive. Other less
radioactive spots were noted within the surrounding nearby area. Autunite was
recognized, but does not account for all of the radioactivity. One skarn
specimen was quite radioactive, but contained only minor autunite. The area lies
quite near the contact with a granitic intrusive. Meta-autunite is present on
skarn.
RADIOACTIVE MINERALS Abnormally radioactive iron
oxide(?); autunite; meta-autunite
HOST ROCK Volcanic:
Mesozoic(?) meta-andesite
MAIN COMMODITIES U
OLD MAP
NO. 3
REFERENCES AEC Reports 3714, 3718; Tingley,
1990; Quade and others, 1990a,b; Mason and others, 1996; Garside, 1973; Castor
and Ferdock, 2004.
NOTES MRDS M231066, UTMs from adits noted in
Tingley (1990) and Quade and others (1990a,b). Garside (1973) lists section as
28.
NO. 2
NAME Carson City
Monazite-Bearing Placer
COUNTY Carson City
LOCATION
T15N, R20E. Exact location unknown
UTMN
4331000
UTME 265000
DISTRICT
Delaware
QUAD McTarnanhan Hill 7.5' (1994)
OTHER
PRODUCTION Placer gold
GEOLOGY Stream placers near
Carson City have yielded as much as 12 pounds per ton of heavy concentrates,
most of which consisted of magnetite. However, chromite, garnet, zircon,
monazite, and gold also were present. In two concentrates, monazite is reported
to make up 5 and 29 pounds per ton, zircon 80 and 21 pounds per ton, and gold
$8.78 and $7.44 per ton respectively. The 5-pound-per-ton sample was known to be
a concentrate of a 12-pound-per-ton separate, giving known concentrations in the
stream placers of 0.03 pounds per ton of monazite (0.000015%), 0.48 pounds per
ton zircon (0.00024%), and 0.000025 ounces per ton gold.
RADIOACTIVE
MINERALS monazite
HOST ROCK Sedimentary (placer):
alluvium
MAIN COMMODITIES Au
OTHER COMMODITIES
Fe, U(?)
OLD MAP NO. 4
REFERENCES Lovering,
1954; Carper, 1945; Schrader, Stone, and Sanford, 1917; Staatz, 1964; Day and
Richards, 1906; U.S. Geological Survey and Nevada Bureau of Mines and Geology,
1964; Garside, 1973
NOTES U.S. Geological Survey and Nevada
Bureau of Mines and Geology, 1964, places location just southeast of Carson City
in vicinity of several magnetite iron ore deposits. UTMs are very approximate.
NO. 3
NAME Lucky Strike
group (9 claims)
COUNTY Carson City
LOCATION
Sec. 20(?), T16N, R20E, Could not be located during this study.
UTMN
4346470
UTME 262550
QUAD Carson City
7.5' (1994)
DEVELOPMENT A few small
pits.
RADIOACTIVITY Background = 0.03 mR/hr, High = 0.11 mR/hr.
A sample contained 0.038% eU3O8.
GEOLOGY Anomalous
radioactivity is associated with northerly-trending fractures in Oligocene(?)
ash-flow tuff. The fractures dip 80ºE. Meta-autunite is present on
skarn.
RADIOACTIVE MINERALS meta-autunite
HOST ROCK
Volcanic: Oligocene ash-flow tuff(?)
MAIN COMMODITIES
U
OLD MAP NO. 1
REFERENCES AEC Reports 3712,
3717; Mason and others, 1996; Garside, 1973; Castor and Ferdock,
2004.
NOTES MRDS M231063, UTMs from center of section.
NO. 4
NAME Sally group (10
claims)
COUNTY Carson City
LOCATION Secs. 16,
21, T15N, R21E
UTMN 4337500
UTME
273000
DISTRICT Delaware
QUAD New Empire 7.5'
(1994)
DEVELOPMENT Two trenches.
RADIOACTIVITY
Background = 0.03 mR/hr, High = 0.40 mR/hr. A sample contained 0.03%
eU3O8.
GEOLOGY Autunite and limonite reportedly occur in a
slightly brecciated and kaolinized area in Oligocene ash-flow tuff. Similar
mineralization is reported from the base of the tuff section, where it contains
a few feet of sediments and overlies granitic rocks. Meta-autunite also reported
in the ash-flow tuff. The Sally No.3 was found in 1969 in the SW¼ SE¼ Sec. 16,
T15N, R21E, but the radioactive area could not be located.
RADIOACTIVE
MINERALS Autunite; meta-autunite
HOST ROCK Volcanic:
Oligocene ash-flow tuff(?)
MAIN COMMODITIES U
OLD MAP
NO. 5
REFERENCES AEC Reports 3715, 3716, Tingley,
1990; Quade and others, 1990a,b; Mason and others, 1996; Garside, 1973; Castor
and Ferdock, 2004.
NOTES MRDS M231057, UTMs from center of
quarter-quarter section noted by author. Tingley (1990) and Quade and others
(1990a,b) place claims in NW¼, NE¼, Sec. 21
NO.
5
NAME Sophie group
COUNTY Carson
City
LOCATION NW¼ SW¼ Sec. 23, T15N, R19E
UTMN
4336810
UTME 256780
DISTRICT
Voltaire
QUAD Carson City 7.5' (1994)
DEVELOPMENT
Two small prospect pits.
RADIOACTIVITY Background =
0.014 mR/hr, High = 0.06 mR/hr
GEOLOGY Slight radioactivity was
found along a nearly vertical 2- to 5-foot-wide pegmatite dike which trends
N40°E. A nearby parallel dike is also radioactive. The dikes cut Mesozoic
schists and phyllites, and are composed mainly of quartz and feldspar with some
magnetite-rich areas. No zoning was noted, but the central portion of the dike
is slightly more radioactive.
HOST ROCK Metamorphic: Mesozoic
schists and phyllites
MAIN COMMODITIES U
OLD MAP NO.
2
REFERENCES AEC Report 3719; Tingley, 1990; Quade and
others, 1990a,b; Mason and others, 1996; Garside, 1973
NOTES
MRDS M231065, UTMs from point noted in Tingley (1990) and Quade and others
(1990a,b).
NO. 6
NAME
Bassie Canyon Springs
COUNTY Churchill
LOCATION
Sec. 10, T18N, R38E
UTMN 4365651
UTME
441148
DISTRICT Chalk Mountain
QUAD Basque
Summit 7.5' (1969)
RADIOACTIVITY Springs are not anomalously
radioactive, but muck contains up to 131 ppm U3O8.
GEOLOGY
Organic-rich spring muck contains anomalous amounts of uranium
RADIOACTIVE
MINERALS uranium-bearing spring muck
HOST ROCK
Sedimentary: Recent spring muck
MAIN COMMODITIES
U
REFERENCES Mitchell and Quade, 1982, no. 10.
NOTES
NO. 7
NAME
Bluebird property
OTHER NAME Blue Bird
COUNTY
Churchill
LOCATION Sec. 13(?) or 24(?), T16N, R32E. Exact
location unknown
UTMN 4344200
UTME
384500
DISTRICT Sand Springs
QUAD Chukar
Canyon 7.5' (1980)
DEVELOPMENT Location
pits.
RADIOACTIVITY Background = 0.015 mR/hr, High = 0.15
mR/hr
GEOLOGY An unidentified yellow uranium mineral occurs in
a small quartz vein with iron and copper sulfides. The wallrock is unknown, but
Sections 13 and 24 are mostly underlain by Cretaceous granodiorite. The prospect
could not be located in 1969.
RADIOACTIVE MINERALS yellow
uranium mineral
HOST ROCK Intrusive: Cretaceous
granodiorite
MAIN COMMODITIES Cu, U
OLD MAP NO.
8
REFERENCES AEC Report 3297; Garside, 1973
NOTES
UTMs from near center of two sections.
NO. 8
NAME Chalk Mountain
Mine
COUNTY Churchill
LOCATION SE¼ Sec. 23,
T17N, R34E. On the southeast flank of Chalk Mountain
UTMN
4352700
UTME 403820
DISTRICT Chalk
Mountain
QUAD West Gate 7.5' (1972)
OTHER PRODUCTION
1925-1927: 2,528 tons of mostly silver and lead ore valued at
$120,268
DEVELOPMENT Several levels of underground workings.
Mining was done in early 1900's for lead and silver.
RADIOACTIVITY
One sample assayed 0.13% eU3O8, but contained only 0.05%
cU3O8.
GEOLOGY Irregular veins, containing silver and lead
minerals, occur in Triassic(?) carbonate rocks. The ore minerals include
cerussite, anglesite, cerargyrite, wulfenite, vanadinite, and argentiferous
galena. Anomalous radioactivity was noted on the 335-foot level, associated with
a gouge zone in a radioactivity was noted on the 335-foot level, associated with
a gouge zone in a dolomitized limestone.
HOST ROCK Sedimentary:
Triassic(?) carbonate rocks
MAIN COMMODITIES Ag, Pb
OTHER
COMMODITIES Au, Fe, Mo, U, Zn
NBMG SAMPLE
3880
OLD MAP NO. 10
REFERENCES AEC Report
3301; Willden and Speed, 1974; Thorstenson, 1968; Mason and others, 1996;
Tingley, 1990; Quade and others, 1990a,b; Couch and Carpenter, 1943; Garside,
1973; Hurley and others, 1982, no. 31.
NOTES MRDS M231001
NO. 9
NAME Cottonwood
claims
OTHER NAME Lovelock and Nickel mines; London and
Liverpool mines; Mustang No. 1-4.
COUNTY
Churchill
LOCATION Secs. 34 and 35, T25N, R36E Along Cottonwood
Creek.
UTMN 4427550
UTME
422010
DISTRICT Table Mountain
QUAD Bolivia
(1990)
OTHER PRODUCTION 1861-?: copper, 1882-1890: nickel and
cobalt
DEVELOPMENT A shallow shaft, less than 100 feet deep,
and numerous small adits and pits. All workings are for
nickel.
RADIOACTIVITY Three or more times background. A select
sample from a prospect pit contained 0.098% eU3O8. Other samples were also
anomalous in uranium, and contained 3.9% nickel and 3% cobalt. Chemical and
radiometric assays are nearly equal. Other samples reportedly contained 0.1 to
0.7% eU3O8.
GEOLOGY Concentrations of nickel and cobalt occur
in small veinlets along a sheared contact between fine-grained gabbro and
albitized Jurassic arenite. Primary and oxidized nickel, cobalt, and copper
minerals have been recognized. The arenite is commonly highly folded and
fractured, and often intruded by fine-grained albitites. Albitization and
silicification of the arenite is commonplace. Positive sodium fluoride bead
tests for uranium were obtained on several distinct minerals from mill slag
samples. A sample submitted to the Atomic Energy Commission in 1951 contained
0.335% eU3O8, and was identified as pitchblende in ferromagnesium minerals. The
deposits have recently (Lutz and Hulen, 2002) been interpreted as exhalative and
stringer mineralization contemporaneous with volcanic rocks of the Humboldt
igneous complex. Zeunerite occurs as lustrous, green, tabular crystals up to 1
mm long with lavendulan in the Nickel Mine.
RADIOACTIVE MINERALS
pitchblende; zeunerite
HOST ROCK Intrusive/Sedimentary:
Jurassic(?) gabbro, Jurassic arenite
MAIN COMMODITIES Co,
Ni
OTHER COMMODITIES Cu, U
NBMG SAMPLE 2370,
2371
OLD MAP NO. 7A
REFERENCES Davis, 1954;
Ferguson, 1939; AEC Reports 3738, 3308, 3731; Willden and Speed 1974; Tingley,
1990; Quade and others, 1990a,b; Mason and others, 1996; Garside, 1973; 1979;
Lutz and Hulen, 2002; Castor and Ferdock, 2004; Mitchell and Quade, 1982, no.
1.
NOTES MRDS M233074, UTMs at Lovelock Mine shafts
NO. 10
NAME Fly by Nite
Mine
OTHER NAME Hot Mine
COUNTY
Churchill
LOCATION NW¼ Sec. 8, T23N, R23E
UTMN
4416380
UTME 321220
DISTRICT
Truckee
QUAD Telephone Well 7.5' (1986)
DEVELOPMENT
Prospect, shaft, and adit
GEOLOGY Fireball Ridge
consists of a pre-Tertiary sequence of schistose and phyllitic metavolcanic
pyroclastic(?) rocks overlain by a sequence of phyllite and slate and intruded
by a quartz diorite to gabbroic pluton. Quartz veins, one massive calcite vein,
and iron-stained shear zones cut pre-Tertiary rocks around the margins of the
plutons, but the metallic mineralization appears marginal. The shaft is near the
contact of Triassic-Jurassic(?) propylitically altered, olive to light gray
schist and the Cretaceous(?) granodiorite intruding it. Gold and uranium are
noted as commodities in the U.S. Bureau of Mines (1995) MASMILS
database.
HOST ROCK Metamorphic: Mesozoic(?) schists and
phyllites
MAIN COMMODITIES Au
OTHER COMMODITIES
U
NBMG SAMPLE 2881
REFERENCES Bonham
and others, 1985; Harlan, 1984; U.S. Bureau of Mines, 1995; Willden and Speed,
1974
NOTES MASMILS 0320010517, UTMs from MASMILS
NO. 11
NAME Gamma group (Nos. 1
and 2)
OTHER NAME Gamma lignite prospect
COUNTY
Churchill
LOCATION Center Sec. 35, T16N, R37E, About
2600 feet N 80ºW of the Gold Trail mine
UTMN
4339979
UTME 432487
DISTRICT
Eastgate
QUAD Buffalo Summit 7.5' (1969)
DEVELOPMENT
A 30-foot 50 inclined adit and a 100-foot-long trench
(1950).
RADIOACTIVITY Background = 0.07 mR/hr, High = 0.3
mR/hr, up to 0.1% uranium in the ash (produced by burning lignite). Lignite
contains up toe 292 ppm U3O8.
GEOLOGY Uranium is reported
present in a 10-foot interval in Tertiary sedimentary rocks containing 50%
lignitic units. One bed averages 3.5 feet thick and contains up to 0.06% uranium
(up to 0.1% in the ash). Dips are low in the surrounding poorly indurated
sandstones and shales, and exposures of the radioactive units continue for more
than a quarter of a mile. The ash content of the lignite ranges from 59 to 75%.
Selenite is commonly present in the lignites.
RADIOACTIVE MINERALS
uranium-bearing lignite
HOST ROCK Sedimentary: Tertiary
sandstone, shale, and lignite
MAIN COMMODITIES
Zeolite
OTHER COMMODITIES Lignite, U
OLD MAP NO.
11
REFERENCES Staatz and Bauer, 1954a; Davis, 1954; Gott
and others, 1952; Duncan, 1952b, p. 118; Staatz and Bauer, 1951a; Willden and
Speed, 1974; McKelvey, 1957, p. 36; Garside and others, 1980; Barrows, 1971;
Smedman, 1969; Mason and others, 1996; Garside, 1973; 1979; Mitchell and Quade,
1982, no. 20.
NOTES MRDS M233081
NO. 12
NAME Johnson
group
COUNTY Churchill
LOCATION N½ Sec. 23,
T16N, R32E
UTMN 4344000
UTME
382800
DISTRICT Sand Springs
QUAD Chukar
Canyon 7.5' (1980)
DEVELOPMENT At least one
pit.
RADIOACTIVITY Background = 0.025 mR/hr, High = 0.3 mR/hr.
A grab sample and a chip sample from the pit both contained 0.01%
eU3O8.
GEOLOGY Anomalous radioactivity reportedly occurs in
rhyolitic flows.
HOST ROCK Volcanic: Tertiary(?) rhyolitic
flows
MAIN COMMODITIES U
OLD MAP NO.
9
REFERENCES AEC Report 3296; Garside, 1973; 1979
NOTES
UTMs from near center of half section.
NO. 13
NAME KD group (116
claims)
COUNTY Churchill
LOCATION Sec. 22,
T24N, R34E (protracted)
UTMN 4421303
UTME
401886
DISTRICT Copper Kettle
QUAD Buena Vista
Hills South (1990)
DEVELOPMENT Discovery and location
pits.
RADIOACTIVITY Background = 0.03 mR/hr, High = 0.75 mR/hr.
A 1-foot chip sample contained 0.04% eU3O8. Silicified volcanic breccia
contained 186 ppm U3O8.
GEOLOGY Uranophane(?) and iron and
copper oxides reportedly occur in a fault zone (N60ºW, 60ºSW) that cuts
rhyolitic tuffaceous volcanic rocks.
RADIOACTIVE MINERALS
uranophane(?), autunite(?)
HOST ROCK Volcanic: Tertiary(?)
rhyolitic volcanic rocks.
MAIN COMMODITIES U
OLD MAP
NO. 6
REFERENCES AEC Report 3300; Garside, 1973;
Mason and others, 1996; Castor and Ferdock, 2004; Hurley and others, 1982, no.
12.
NOTES MRDS: 233108, UTMs from Hurley and others (1982).
NO. 14
NAME Lee Hot
Springs
OTHER NAME Allen Springs; Ax-Hill
claims
COUNTY Churchill
LOCATION NW¼ Sec. 34,
T16N, R29E
UTMN 4321080
UTME
351240
DISTRICT Holy Cross
QUAD Allen Springs
7.5' (1987)
DEVELOPMENT Several pits.
RADIOACTIVITY
Background = 5-7.5 mR/hr, High = 20-25 mR/hr. A ssays range from 0.003 to
0.045% cU3O8.
GEOLOGY Anomalous radioactivity and yellow,
non-fluorescent uranium minerals are reported from a spring sinter mound near
Lee Hot Springs (actually a well). The occurrence is within 50 yards of the
“spring.” Silver and gold values are also anomalous.
RADIOACTIVE
MINERALS yellow, non-fluorescent uranium minerals
HOST ROCK
Sedimentary: Quaternary(?) sinter
MAIN COMMODITIES
U
OLD MAP NO. 7B
REFERENCES Harrie Mallory,
written commun., 1977; Wollenberg, 1974; Garside, 1979; Hurley and others, 1982,
no. 33.
NOTES UTMs at Lee Hot Springs
NO. 15
NAME Martin
claims
COUNTY Churchill
LOCATION Sec. 12(?),
T18N, R34E (unsurveyed). About 8 miles north of Chalk Mountain
UTMN
4366000
UTME 405000
DISTRICT
Wonder
QUAD Wonder Mountain 7.5' (1972)
DEVELOPMENT
Location pits.
RADIOACTIVITY Background = 0.02 mR/hr,
High = 0.15 mR/hr
GEOLOGY Torbernite(?) is present along
fractures in a Tertiary rhyolite. The property could not be located in
1968.
RADIOACTIVE MINERALS torbernite(?
HOST ROCK
Volcanic: Tertiary rhyolite
MAIN COMMODITIES U
OLD
MAP NO. 12
REFERENCES AEC Report 3293; Garside,
1973
NOTES Location uncertain, UTMs from near center of Sec.
12.
NO. 16
NAME Mustang
group (Nos. 1-7)
COUNTY Churchill
LOCATION
Sec. 25(?), T20N, R39E
UTMN 4380000
UTME
453500
DISTRICT New Pass
QUAD New Pass 7.5'
(1990)
DEVELOPMENT Several location
pits.
RADIOACTIVITY Background = 0.03 mR/hr, High = 0.15
mR/hr
GEOLOGY Anomalous radioactivity is associated with
opalized stringers, beds, and fractures in a tuff unit. The tuff is interbedded
with volcanic flows. Iron and manganese oxides are also present.
HOST
ROCK Volcanic: Tertiary(?) tuff
MAIN COMMODITIES
U(?)
OLD MAP NO. 13
REFERENCES AEC Report
3295; Garside, 1973
NOTES Location uncertain, UTMs from near
center of Sec. 25.
NO. 17
NAME
Nezelda Mine
OTHER NAME Mineral Survey No. 4820;
Fireball claims
COUNTY Churchill
LOCATION Sec.
19, T22N, R26E
UTMN 4412520
UTME
319750
DISTRICT Truckee
QUAD Hot Springs Flat
7.5' (1986)
OTHER PRODUCTION 1880s: main production for gold,
silver, and lead, 1880s-1940: minor production
DEVELOPMENT
Numerous shallow pits, at least six shafts, two headframes, adits used for
sample storage, small dumps, several old buildings
GEOLOGY
Outcrops are largely of andesite, slate, and hornfels, commonly iron-stained and
locally containing quartz veins and gossan. Presence of uranium may be
questionable.
HOST ROCK Metamorphic: Mesozoic(?) andesite,
slate, and hornfels
MAIN COMMODITIES Ag, Au, Pb
OTHER
COMMODITIES U(?)
NBMG SAMPLE 2879,
2880
REFERENCES Bonham and others, 1985; Harlan, 1984; U.S.
Bureau of Mines, 1995; Willden and Speed, 1974; Mason and others,
1996
NOTES MRDS M231034, M231085, UTMs from center of cluster
of workings.
NO. 18
NAME
Patriot group (26 claims)
COUNTY Churchill
LOCATION
Sec. 6(?), T19N, R40E
UTMN 4377000
UTME
455000
DISTRICT New Pass
QUAD New Pass 7.5'
(1990)
RADIOACTIVITY Background = 0.03 mR/hr, High = 0.17
mR/hr. A 20-foot horizontal chip sample contained 0.03 eU3O8.
GEOLOGY
Minor quantities of autunite occur along iron-stained fractures in
Tertiary rhyolitic volcanic rocks.
RADIOACTIVE MINERALS
Autunite
HOST ROCK Volcanic: Tertiary rhyolitic volcanic
rocks.
MAIN COMMODITIES U
OLD MAP NO.
14
REFERENCES AEC Report 3299; Garside, 1973
NOTES
Location uncertain, UTMs from near center of Sec. 6.
NO. 19
NAME Uranium
King
COUNTY Churchill
LOCATION Sec. 28, T20N,
R40E (projected from the west)
UTMN 4380590
UTME
457920
DISTRICT New Pass
QUAD Mount
Airy 7.5' (1969)
DEVELOPMENT 5-m adit and a shorter
adit.
RADIOACTIVITY About 3 times background. A grab
radioactive sample contained up to 350 ppm U3O8.
GEOLOGY
Anomalous radioactivity is associated with iron-oxide minerals in tuffaceous
sandstones and mudstones which have boulders of volcanic rocks up to 2 m in
diameter. The sedimentary rocks underlie welded ash-flow tuffs.
HOST
ROCK Sedimentary: Tertiary tuffaceous sedimentary rocks
MAIN
COMMODITIES U
REFERENCES Mitchell and Quade, 1982,
no. 7.
NOTES UTMs from prospect symbol on topographic map.
Mitchell and Quade (1982) suggest the Mustang group and the Patriot group could
be the same property.
NO. 20
NAME
50-50 claim
COUNTY Clark
LOCATION Sec.
15(?), T19S, R67E
UTMN 4018000
UTME
726000
QUAD Echo Bay 7.5' (1983)
RADIOACTIVITY
Background = 0.010 mR/hr, High = 0.025 mR/hr
GEOLOGY Very
slightly abnormal radioactivity is present at one locality in mudstone of the
Pliocene(?) Muddy Creek Formation.
HOST ROCK Sedimentary:
Pliocene(?) Muddy Creek Formation
MAIN COMMODITIES
U(?)
OLD MAP NO. 113
REFERENCES Garside,
1973.
NOTES Exact location uncertain, UTMs from near center of
section 15.
NO. 21
NAME
Alice Fraction prospect
COUNTY Clark
LOCATION
SW¼ NE¼ Sec. 20, T24S, R58E
UTMN 3968030
UTME
636240
DISTRICT Goodsprings
QUAD Goodsprings
7.5' (1989)
DEVELOPMENT A few small pits and
trenches.
RADIOACTIVITY Background = 10 cps, High = 100
cps.
GEOLOGY A 2-foot-thick vein of limonitic chert containing
oxidized copper minerals is radioactive. The vein strikes N25ºE and dips nearly
vertically. Most of the quarter-quarter section is underlain by
Tertiary-Cretaceous porphyritic intrusive rock.
RADIOACTIVE MINERALS
Anomalously radioactive copper minerals and limonite
HOST ROCK
Intrusive: Tertiary-Cretaceous porphyry
MAIN COMMODITIES
Cu
OTHER COMMODITIES U(?)
OLD MAP NO.
77
REFERENCES Barton and Behre, 1954; Baker, undated; Longwell
and others, 1965; Garside, 1973
NOTES UTMs from location of
Alice Fraction as noted on Goodsprings district map 21900117
NO. 22
NAME Alice
mine
OTHER NAME Alice No.2 claim(?); Yellow Pine Extension;
Green Mountain.
COUNTY Clark
LOCATION SW¼ Sec.
20, T24S, R58E
UTMN 3967320
UTME
635800
DISTRICT Goodsprings
QUAD Goodsprings
7.5' (1989)
OTHER PRODUCTION 1909-1924: 2,561 tons ore, 0.65 oz
Au, 1,141 oz Ag, 30,933 lbs Cu, 46,600 lbs Pb, 1,528,851 lbs
Zn
DEVELOPMENT Three shafts several hundred feet deep, and
numerous drifts and crosscuts (for zinc, lead, copper, and
silver).
RADIOACTIVITY Background = 10 cps, High = 40
cps.
GEOLOGY Slightly anomalous radioactivity is associated
with limonite. Lead and zinc minerals occur in a nearly continuous ore shoot 900
feet long, up to 40 feet wide, and 2 to 5 feet thick, in basal dolomite of the
Bird Spring Formation (Mississippian).
RADIOACTIVE MINERALS
Anomalously radioactive limonite
HOST ROCK Sedimentary:
Mississippian Bird Spring Formation
MAIN COMMODITIES Pb,
Zn
OTHER COMMODITIES Ag, Au, Cu, U(?), V
OLD MAP NO.
78
REFERENCES Barton and Behre, 1954; Hewett, 1931;
Longwell and others, 1965; Smith and others, 1983; Smith and Tingley, 1983;
Mason and others, 1996; Garside, 1973
NOTES MRDS: D000031
NO. 23
NAME Allanite
pegmatites
OTHER NAME MFQ-554, 555, 556
COUNTY
Clark
LOCATION Sec. 21, T19S, R70E (protracted)
UTMN
4017136
UTME 753260
DISTRICT Gold
Butte
QUAD Gold Butte 7.5' (1984)
RADIOACTIVITY
The type of allanite occurrence reported usually contains cerium-earth
metals, thorium, and traces of uranium. High = 2,000 cps. Th analyses up to
9,900 ppm; U3O8 up to 1,126 ppm.
GEOLOGY Two small allanite
pegmatite bodies are known in the Gold Butte area. They are generally small
irregular bodies in porphyritic rapakivi-like granite. Volborth (1962a) reports
that all known allanite pegmatites occur near the contacts between Precambrian
granites and schists. Allanite is concentrated in poorly developed wall and
intermediate pegmatite zones, which are mostly composed of very coarse-grained
microperthite and quartz. Biotite and, in one case, magnetite are abundant
associates. Allanite does not exceed 1 to 3% in these zones of the pegmatites,
and only traces of zircon and samarskite are present. Allanite (replacing
plagioclase), limonite, hematite, zircon, thorite, monazite and an unidentified
rare-earth phase were reported in addition to apatite, quartz, and
plagioclase.
RADIOACTIVE MINERALS samarskite(?), thorite,
monazite, allanite
HOST ROCK Intrusive: pegmatite
MAIN
COMMODITIES U, Th
OLD MAP NO.
26
REFERENCES Volborth, 1962a, p. 214; Garside, 1973Dexter and
others, 1983.
NOTES Location from Dexter and others, 1983.
NO. 24
NAME Alpha Beta
uranium prospect
OTHER NAME Alpha group (40 claims); Beta group
(8 claims); Alpha pit; Alpha No. 27 claim
COUNTY
Clark
LOCATION Sec. 31, T31S, R65E
UTMN
3897080
UTME 703320
DISTRICT
Newberry
QUAD Juniper Mine 7.5' (1984)
DEVELOPMENT
Pit
RADIOACTIVITY Four samples from Alpha pit had assays
of 0.01, 0.02, 0.16 and 0.18% U3O8. Instrument readings varied between 0.1 to
0.5% and averaged 0.17% U3O8.
GEOLOGY Area is underlain by
Precambrian gneiss displaced by faulting and locally invaded by Tertiary
intrusive rock. The gneiss is coarse-grained and consists of alternating bands
of granular and schistose minerals. The mineralization consists of a dark
brownish-black waxy filling in fractures and porosity between crystals. This
material was not identified.
RADIOACTIVE MINERALS unidentified
uranium mineral
HOST ROCK Metamorphic: Precambrian
gneiss
MAIN COMMODITIES U
REFERENCES Evans,
1978
NOTES UTMs at Alpha pit.
NO.
25
NAME Anomalies 4, 5, 6, 7
OTHER NAME
Bitter Spring Valley
COUNTY Clark
LOCATION
T19S and 20S, R66E (unsurveyed). Three miles north of Bearing Peak, and along a
northeast line toward Bitter Spring.
UTMN
4013600
UTME 718300
DISTRICT Muddy
Mountains
QUAD Bitter Spring 7.5' (1983), Boulder Canyon 7.5'
(1983)
RADIOACTIVITY High = 0.11 mR/hr. Grab samples contain
0.01% eU3O8.
GEOLOGY 1-foot-thick shale bed near the middle of
an 8- to 10-foot-thick limestone unit of the Tertiary Horse Spring Formation(?)
is anomalously radioactive at several localities. Longwell and others (1965) map
the Horse Spring Formation here as the Gale Hills Formation of Cretaceous or
Tertiary age. Seven airborne anomalies were reported from this limestone bed
along a 6- to 7-mile line.
HOST ROCK Sedimentary: Tertiary
Horse Spring Formation(?)
MAIN COMMODITIES U(?)
OLD MAP
NO. 112
REFERENCES AEC Report 3325; Barrett and
Mallory, 1955; Longwell and others, 1965, pl. 1; Garside, 1973.
NOTES
UTMs from approximate center of line of anomalies 4, 5, 6, 7
NO. 26
NAME Anomaly
1
COUNTY Clark
LOCATION Sec. 21, T20S,
R66E
UTMN 4008600
UTME
714860
DISTRICT Muddy Mountains
QUAD Boulder
Canyon 7.5' (1983)
RADIOACTIVITY Airborne
anomaly
GEOLOGY See discussion of Anomalies 4, 5, 6,
7.
HOST ROCK Sedimentary: Tertiary Horse Spring
Formation(?)
MAIN COMMODITIES U(?)
REFERENCES
AEC Report 3325; Barrett and Mallory, 1955; Longwell and others, 1965, pl. 1;
Garside, 1973.
NOTES UTMs from point noted in Figure 7 of
Garside (1973)
NO. 27
NAME
Anomaly 2
COUNTY Clark
LOCATION Sec. 15, T20S,
R66E
UTMN 4009650
UTME
715550
DISTRICT Muddy Mountains
QUAD Boulder
Canyon 7.5' (1983)
RADIOACTIVITY Airborne
anomaly
GEOLOGY See discussion of Anomalies 4, 5, 6,
7.
HOST ROCK Sedimentary: Tertiary Horse Spring
Formation(?)
MAIN COMMODITIES U(?)
REFERENCES
AEC Report 3325; Barrett and Mallory, 1955; Longwell and others, 1965, pl. 1;
Garside, 1973.
NOTES UTMs from point noted in Figure 7 of
Garside (1973)
NO. 28
NAME
Anomaly 3
COUNTY Clark
LOCATION Sec. 14, T20S,
R66E
UTMN 4010430
UTME
717040
DISTRICT Muddy Mountains
QUAD Boulder
Canyon 7.5' (1983)
RADIOACTIVITY Airborne
anomaly
GEOLOGY See discussion of Anomalies 4, 5, 6,
7.
HOST ROCK Sedimentary: Tertiary Horse Spring
Formation(?)
MAIN COMMODITIES U(?)
REFERENCES
AEC Report 3325; Barrett and Mallory, 1955; Longwell and others, 1965, pl. 1;
Garside, 1973.
NOTES UTMs from point noted in Figure 7 of
Garside (1973)
NO. 29
NAME
Anomaly 4
OTHER NAME Bitter Spring Valley
COUNTY
Clark
LOCATION Sec. 11, T20S, R66E
UTMN
4012000
UTME 717270
DISTRICT Muddy
Mountains
QUAD Boulder Canyon 7.5'
(1983)
RADIOACTIVITY Airborne anomaly
GEOLOGY
See discussion of Anomalies 4, 5, 6, 7.
HOST ROCK Sedimentary:
Tertiary Horse Spring Formation(?)
MAIN COMMODITIES
U(?)
REFERENCES AEC Report 3325; Barrett and Mallory, 1955;
Longwell and others, 1965, pl. 1; Garside, 1973.
NOTES UTMs
from point noted in Figure 7 of Garside (1973)
NO.
30
NAME Anomaly 5
OTHER NAME Bitter
Spring Valley
COUNTY Clark
LOCATION Sec. 2,
T20S, R66E
UTMN 4013160
UTME
717850
DISTRICT Muddy Mountains
QUAD Boulder
Canyon 7.5' (1983)
RADIOACTIVITY Airborne
anomaly
GEOLOGY See discussion of Anomalies 4, 5, 6,
7.
HOST ROCK Sedimentary: Tertiary Horse Spring
Formation(?)
MAIN COMMODITIES U(?)
REFERENCES
AEC Report 3325; Barrett and Mallory, 1955; Longwell and others, 1965, pl. 1;
Garside, 1973.
NOTES UTMs from point noted in Figure 7 of
Garside (1973)
NO. 31
NAME
Anomaly 6
OTHER NAME Bitter Spring Valley
COUNTY
Clark
LOCATION Sec. 36, T19S, R66E
UTMN
4014200
UTME 718700
DISTRICT Muddy
Mountains
QUAD Bitter Spring 7.5' (1983), Boulder Canyon 7.5'
(1983)
RADIOACTIVITY Airborne anomaly
GEOLOGY
See discussion of Anomalies 4, 5, 6, 7.
HOST ROCK Sedimentary:
Tertiary Horse Spring Formation(?)
MAIN COMMODITIES
U(?)
REFERENCES AEC Report 3325; Barrett and Mallory, 1955;
Longwell and others, 1965, pl. 1; Garside, 1973.
NOTES UTMs
from point noted in Figure 7 of Garside (1973)
NO.
32
NAME Anomaly 7
OTHER NAME Bitter
Spring Valley
COUNTY Clark
LOCATION Sec.
30(?), T19S, R66.5E
UTMN 4015800
UTME
720000
DISTRICT Muddy Mountains
QUAD Bitter
Spring 7.5' (1983)
RADIOACTIVITY Airborne
anomaly
GEOLOGY See discussion of Anomalies 4, 5, 6,
7.
HOST ROCK Sedimentary: Tertiary Horse Spring
Formation(?)
MAIN COMMODITIES U(?)
REFERENCES
AEC Report 3325; Barrett and Mallory, 1955; Longwell and others, 1965, pl. 1;
Garside, 1973.
NOTES UTMs from point noted in Figure 7 of
Garside (1973)
NO. 33
NAME
Azurite mine
OTHER NAME Rosella claims; Sandy claims; Gulch
claims
COUNTY Clark
LOCATION SW¼ Sec. 26,
T24S, R57E
UTMN 3965320
UTME
630200
DISTRICT Goodsprings
QUAD Shenandoah
Peak 7.5' (1985)
OTHER PRODUCTION 1910-1920: 656 tons ore, 35
oz Au, 1,832 oz Ag, 222,514 lbs Cu, 8,901 lbs Pb, 22,950 lbs.
Zn
DEVELOPMENT Less than 1,000 feet of underground
workings.
RADIOACTIVITY Background = 10 cps, High = 30
cps.
GEOLOGY Chalcocite, bornite, and chalcopyrite orebodies
occur in a dolomitized zone in the Anchor Limestone. Abnormal radioactivity is
associated with limonite.
RADIOACTIVE MINERALS Anomalously
radioactive limonite
HOST ROCK Sedimentary: Mississippian
Anchor Limestone Member of Monte Cristo Limestone
MAIN COMMODITIES
Cu, Pb, Zn
OTHER COMMODITIES Ag, Au, Pt, U(?)
OLD
MAP NO. 68
REFERENCES Barton and Behre, 1954;
Hewett, 1923, 1931; Longwell and others, 1965; Smith and others, 1983; Smith and
Tingley, 1983; Mason and others, 1996; Garside, 1973
NOTES
MRDS: M031094
NO. 34
NAME
Bico property
OTHER NAME Volcano; Volcano mine; Promethus
claim
COUNTY Clark
LOCATION NW¼ Sec. 3 and NE¼
Sec. 4, T25S, R58E
UTMN 3963270
UTME
638500
DISTRICT Goodsprings
QUAD Goodsprings
7.5' (1989)
OTHER PRODUCTION Early 1900s: Prometheus claim: 20
tons Pb ore and 70 tons Zn ore, Volcano claim: 300 tons Pb and Zn
ore
DEVELOPMENT Adit and prospect pits
RADIOACTIVITY
Background = 10 cps, High = 30 cps.
GEOLOGY Hydrozincite
is reportedly radioactive.
RADIOACTIVE MINERALS Anomalously
radioactive hydrozincite
HOST ROCK Sedimentary: Mississippian
Yellowpine Limestone Member of Monte Cristo Limestone
MAIN COMMODITIES
Pb, Zn
OTHER COMMODITIES U(?)
OLD MAP NO.
87
REFERENCES Barton and Behre, 1954; Longwell and
others, 1965; Smith and others, 1983; Smith and Tingley, 1983; Mason and others,
1996; Hewett, 1931; Garside, 1973
NOTES MRDS: M242231
NO. 35
NAME Big Horn
claims
COUNTY Clark
LOCATION Sec. 36(?), T25S,
R64E
UTMN 3955800
UTME
700300
DISTRICT Eldorado
QUAD Nelson 7.5'
(1984)
DEVELOPMENT A 35-foot-long
trench
RADIOACTIVITY Background = 0.04 mR/hr, High (across 2.5
feet) = 0.4 mR/hr, A 1.5-foot channel sample contained 0.07% eU3O8 and 0.024%
cU3O8.
GEOLOGY Radioactivity is associated with fractures in
Precambrian metasedimentary rocks.
HOST ROCK Sedimentary:
Precambrian metasedimentary rocks.
MAIN COMMODITIES
U(?)
OLD MAP NO. 116
REFERENCES AEC Report
3316; Garside, 1973.
NOTES Exact location uncertain, UTMs from
near center of section 36.
NO.
36
NAME Billy Wilson No.1 claim
COUNTY
Clark
LOCATION NW¼(?) Sec. 20, T25S, R58E, 0.75 miles northwest
of the Sultan mine
UTMN 3958000
UTME
634800
DISTRICT Goodsprings
QUAD Shenandoah
Peak 7.5' (1985)
DEVELOPMENT An old adit, 20 feet
long.
RADIOACTIVITY Radioactivity: High = 0.3
mR/hr
GEOLOGY Radioactivity occurs in the Mississippian Monte
Cristo Limestone along a minor fracture near the Sultan fault. Galena and iron
and copper oxides are reported present.
HOST ROCK Sedimentary:
Mississippian Monte Cristo Limestone
MAIN COMMODITIES
Pb
OTHER COMMODITIES U(?)
OLD MAP NO.
93
REFERENCES AEC Report 3312; Garside, 1973
NOTES
UTMs from point about 0.75 miles northwest of the Sultan mine.
NO. 37
NAME Bitter Ridge thrust
fault
COUNTY Clark
LOCATION SE¼ NW¼ Sec. 6,
T17S, R70E
UTMN 4041232
UTME
749143
QUAD Devils Throat 7.5' (1983)
DEVELOPMENT
Pits and bulldozer cuts.
RADIOACTIVITY Up to 10 times
background. U308 analyses to 190 ppm.
GEOLOGY Anomalous
radioactivity is found in the gouge zone of the Bitter Ridge thrust fault. The
host rock is ferruginous claystone of the Petrified Forest Member(?) of the
Chinle(?) Formation. Limonite, kaolinite, calcite, barite, and an unidentified
phosphate mineral are associated. Anomalous As (1.35%), Fe (35%), Cd, Co, Cu,
Mo, Ni, Sn, W, and Zn are reported.
HOST ROCK Sedimentary:
Mesozoic Chinle(?) Formation
MAIN COMMODITIES
U
REFERENCES Johnson and Glynn, 1982, no. 3.
NOTES
NO. 38
NAME
Blue Chip, Frank Robbin, and other prospects (6 claims)
COUNTY
Clark
LOCATION Secs. 13 and 24, T18S, R70E (unsurveyed).
Sections projected from west
UTMN 4027500
UTME
757500
DISTRICT Gold Butte
QUAD Gold Butte
7.5' (1984)
DEVELOPMENT Bulldozer
trenches.
RADIOACTIVITY A few times
background.
GEOLOGY Tyuyamunite(?) occurs as small smears in
the gray and white calcareous tuffs and clays of the Tertiary Horse Spring
Formation.
RADIOACTIVE MINERALS tyuyamunite(?)
HOST
ROCK Sedimentary: Tertiary Horse Spring Formation
MAIN
COMMODITIES U
OLD MAP NO. 16
REFERENCES
AEC Report 3380; Garside, 1973
NOTES Location uncertain,
UTMs from near center of Secs. 13, 24
NO.
39
NAME Boss mine
OTHER NAME Boss Gold Mining
Co.; Platinum Gold Mining Co.
COUNTY Clark
LOCATION
Secs. 27 and 34, T24S, R57E
UTMN 3964690
UTME
629160
DISTRICT Goodsprings
QUAD
Shenandoah Peak 7.5' (1985)
OTHER PRODUCTION 1886-1914:
intermittent Cu and Au production, 1914-1920: 3,051 tons ore, 1,772 oz Au, 7,094
oz Ag, 396 oz Pt, 594 oz Pd, 568,099 lbs Cu, 753 lbs. Pb
DEVELOPMENT
4 levels of workings
RADIOACTIVITY Background = 10 cps,
High = 100 cps.
GEOLOGY Anomalous radioactivity is present in
limonite lenses surrounded by chrysocolla. The orebody occurred along a minor
fault zone related to the Keystone thrust fault. This minor fault separates the
Monte Cristo Limestone from the Valentine Limestone Member of the Sultan
Limestone (Mississippian). The mine is an example of the unique
copper-platinum-palladium deposits in the Goodsprings
district.
RADIOACTIVE MINERALS Anomalously radioactive
limonite
HOST ROCK Sedimentary: Devonian Valentine Limestone
Member of the Sultan Limestone, Mississippian Monte Cristo Limestone
MAIN
COMMODITIES Ag, Au, Pd, Pt
OTHER COMMODITIES Cu, Pb,
U(?)
NBMG SAMPLE 1151A, 1151B
OLD MAP NO.
70
REFERENCES Barton and Behre, 1954; Longwell and others,
1965; Hewett, 1931; Smith and others, 1983; Smith and Tingley, 1983; Mason and
others, 1996; Garside, 1973
NOTES MRDS: M242242
NO. 40
NAME Boulder Canyon
occurrence
COUNTY Clark
LOCATION T20S,
R67E
UTMN 4004000
UTME
719000
DISTRICT Black Mountains
QUAD Boulder
Canyon 7.5' (1983)
GEOLOGY Carnotite reported from Boulder
Canyon. This area is underlain by Tertiary volcanic rock and Cretaceous-Tertiary
cobble conglomerate and sandstone of the Gale Hills Formation.
RADIOACTIVE
MINERALS carnotite
HOST ROCK Volcanic/Sedimentary:
Tertiary volcanic rock; Cretaceous-Tertiary Gale Hills Formation.
MAIN
COMMODITIES U
REFERENCES Castor and others,
1996
NOTES Exact location uncertain; SP-31 notes from Boulder
Canyon in McClanahan district. Boulder Canyon is near the Black Mountain
district, which has been called the McClanahan district in some literature.
Radioactive anomalies also occur a few miles to the NW. UTMs placed at nearest
extent of Black Mountain district to Boulder Canyon.
NO. 41
NAME Bullion
mine
COUNTY Clark
LOCATION Sec. 23, T25S,
R58E
UTMN 3957880
UTME
641140
DISTRICT Goodsprings
QUAD Goodsprings
7.5' (1989)
OTHER PRODUCTION 1913-1927: 23,222 tons ore; 2 oz
Au, 27,662 oz Ag, 1,909 lbs Cu, 3,500,193 lbs Pb, and 544,477 lbs Zn per
ton
DEVELOPMENT An inclined shaft and workings on four
levels.
RADIOACTIVITY Background = 10 cps, High = 30
cps.
GEOLOGY Galena and hydrozincite occur in tabular bodies
along breccia zones in the Anchor limestone. The radioactivity is associated
with hydrozincite.
RADIOACTIVE MINERALS Anomalously radioactive
hydrozincite
HOST ROCK Sedimentary: Mississippian Anchor
Limestone and Bullion Dolomite Members of Monte Cristo Limestone
MAIN
COMMODITIES Pb
OTHER COMMODITIES Ag, Au, Cu, U(?),
Zn
NBMG SAMPLE 1154
OLD MAP NO.
88
REFERENCES Barton and Behre, 1954; Hewett, 1931; Longwell
and others, 1965; Smith and others, 1983; Smith and Tingley, 1983; Mason and
others, 1996; Garside, 1973
NOTES MRDS: M031096
NO. 42
NAME Carnotite No.1
claim
OTHER NAME Perkin Brothers claim; Broken Ridge
property
COUNTY Clark
LOCATION SW¼ SE¼ Sec.
20, T16S, R6E
UTMN 4044631
UTME
722306
DISTRICT Moapa
QUAD Weiser Ridge 7.5'
(1983)
DEVELOPMENT Several pits and a shallow
shaft.
RADIOACTIVITY Background = 0.1 mR/hr, High = 2 mR/hr.
Samples contain up to 0.07% eU3O8 (0.075 cU3O8). Other samples contain up to 244
ppm U3O8.
GEOLOGY Very-fine-grained carnotite occurs with
carbonaceous trash as well as along a sheared limestone-sandstone contact. The
carnotite occurs in a zone up to 5 feet thick and 300 feet long. The rocks
present at the prospect are part of a 58-foot-thick unnamed unit at the top of
the Jurassic(?) Aztec Sandstone, which presumably lies unconformably beneath the
Willow Tank Formation of Cretaceous age. Johnson and Glynn (1982) reported this
contact to be between the Cretaceous Willow Tank and the overlying Cretaceous
Baseline Sandstone.
RADIOACTIVE MINERALS carnotite
HOST
ROCK Sedimentary: Mesozoic sandstone and limestone
MAIN
COMMODITIES U
OLD MAP NO. 30
REFERENCES
AEC Report 3329; Carper, 1946; Barrett and Mallory, 1955; Garside, 1973;
DMEA; Castor and Ferdock, 2004; Johnson and Glynn, 1982, no. 2.
NOTES
Location from coordinates in Johnson and Glynn, 1982, who believe the
Carnotite No. 1 to be the same as the Golden Glow and Carnotite Lode.
NO. 43
NAME Cedar
Basin
OTHER NAME Quartz quarry, MFQ-527
COUNTY
Clark
LOCATION NE¼ Sec. 4, T20S, R70E
(protracted)
UTMN 4012898
UTME
753908
DISTRICT Gold Butte
QUAD Jumbo Peak
7.5' (1983)
DEVELOPMENT Quarry for white
quartz.
RADIOACTIVITY High = 1,200 cps. A sample contained 239
ppm Th and 95 ppm U3O8.
GEOLOGY A radioactive quartz vein cuts
the Gold Butte Granite near its margin.
HOST ROCK Quartz
vein
MAIN COMMODITIES U, Th
REFERENCES Dexter
and others, 1983.
NOTES
NO.
44
NAME Copper Chief mine
OTHER NAME
Copper Chief
COUNTY Clark
LOCATION Center N½
NE¼ Sec. 35, T24S, R57E
UTMN 3964940
UTME
631180
DISTRICT Goodsprings
QUAD Shenandoah
Peak 7.5' (1985)
OTHER PRODUCTION 1921: 3 lots: 25,669 lbs ore
averaging about 10% Co
DEVELOPMENT Several short tunnels and
shallow shafts
RADIOACTIVITY Background = 10 cps, High = 10
cps.
GEOLOGY Anomalous radioactivity is associated with
siliceous limonite and, to a lesser extent, with chrysocolla. Irregularly
mineralized fractures in the Mississippian Bullion Dolomite contain stainierite,
malachite, and chrysocolla.
RADIOACTIVE MINERALS Anomalously
radioactive chrysocolla and limonite
HOST ROCK Sedimentary:
Mississippian Bullion Dolomite Member of Monte Cristo Limestone
MAIN
COMMODITIES Co
OTHER COMMODITIES Cu, U(?)
NBMG
SAMPLE 1150
OLD MAP NO. 73
REFERENCES
Barton and Behre; 1954; Longwell and others; 1965; Smith and others,
1983; Smith and Tingley, 1983; Mason and others, 1996; Garside, 1973; Hewett,
1931
NOTES MRDS: W000699
NO.
45
NAME Copper Flower Quartz mine
OTHER NAME
Copper Flower mine; Vanadium Wedge mine; Last Chance
mine.
COUNTY Clark
LOCATION Center E½ Sec. 11,
T25S, R57E
UTMN 3961370
UTME
631120
DISTRICT Goodsprings
QUAD Shenandoah
Peak 7.5' (1985)
DEVELOPMENT A 120-foot adit and two very small
stopes (for copper).
RADIOACTIVITY Background = 15 cps, High =
175 cps.
GEOLOGY Anomalous radioactivity is associated with
iron and copper oxides along a steeply dipping fracture zone near the base of
the dolomitized Anchor limestone Member of the Mississippian Monte Cristo
limestone. Iron-oxides, chrysocolla, azurite, and malachite occur in seams less
than 1 inch thick along brecciated zones.
RADIOACTIVE MINERALS
Anomalously radioactive azurite, chrysocolla, iron oxide, and
malachite
HOST ROCK Sedimentary: Mississippian Anchor Limestone
Member of Monte Cristo Limestone
MAIN COMMODITIES
Cu
OTHER COMMODITIES U(?)
OLD MAP NO.
96
REFERENCES AEC Reports 3372, 3377; Barton and Behre, 1954,
p. 57; Lovering, 1954, p. 78; Longwell and others, 1965; Smith and others, 1983;
Smith and Tingley, 1983; Garside, 1973.
NOTES
NO. 46
NAME Copper Glance
mine
COUNTY Clark
LOCATION SE¼ NW¼ Sec. 20,
T24S, R58E
UTMN 3968290
UTME
636700
DISTRICT Goodsprings
QUAD Goodsprings
7.5' (1989)
OTHER PRODUCTION Early 1900s: probably less than 50
tons low grade Cu ore
DEVELOPMENT Several small pits and
stopes.
RADIOACTIVITY Background = 10 cps, High = 30
cps.
GEOLOGY Chrysocolla and malachite occur along a vertical
shear zone in dolomite. Radioactivity is associated with copper oxides and
limonite. The quarter-quarter section is underlain by Mississippian Bird Spring
Formation.
RADIOACTIVE MINERALS Anomalously radioactive
chrysocolla, limonite, and malachite
HOST ROCK Sedimentary:
Mississippian Bird Spring Formation
MAIN COMMODITIES
Cu
OTHER COMMODITIES Co, U(?)
OLD MAP NO.
79
REFERENCES Barton and Behre, 1954; Hewett, 1931; Smith and
others, 1983; Smith and Tingley, 1983; Mason and others, 1996; Longwell and
others, 1965; Garside, 1973
NOTES MRDS: M031101
NO. 47
NAME Copperside
mine
COUNTY Clark
LOCATION E½ Sec. 26, T24S,
R57E
UTMN 3966050
UTME
630840
DISTRICT Goodsprings
QUAD Shenandoah
Peak 7.5' (1985)
OTHER PRODUCTION 1917-1920: 621 tons ore, 3 oz
Au, 230 oz Ag, 304,024 lbs Cu
DEVELOPMENT Several hundred feet
of underground workings.
RADIOACTIVITY Background = 10 cps,
High = 80 cps.
GEOLOGY Lenses of chalcopyrite, bornite,
chalcocite, and copper oxides occur parallel to bedding near the base of the
Sultan Limestone. Abnormal radioactivity is associated with both oxidized copper
minerals and limonite.
RADIOACTIVE MINERALS Anomalously
radioactive copper minerals and limonite
HOST ROCK Sedimentary:
Devonian Sultan Limestone
MAIN COMMODITIES Cu
OTHER
COMMODITIES Ag, Au, U(?)
OLD MAP NO.
69
REFERENCES Barton and Behre, 1954; Hewett, 1923, 1931;
Longwell and others, 1965; Smith and others, 1983; Smith and Tingley, 1983;
Mason and others, 1996; Garside, 1973
NOTES MRDS: M031102
NO. 48
NAME Daniel Boon
mine
COUNTY Clark
LOCATION NW¼ Sec. 6, T24S,
R57E
UTMN 3972800
UTME
623520
DISTRICT Goodsprings
QUAD Green Monster
Mine 7.5' (1984)
DEVELOPMENT Shaft
RADIOACTIVITY
Background = 15 cps, High = 35 cps.
GEOLOGY Workings are
reportedly slightly radioactive throughout. The NW¼ section is underlain by the
Mississippian Bird Spring Formation.
HOST ROCK Sedimentary:
Mississippian Bird Spring Formation
MAIN COMMODITIES
U(?)
OLD MAP NO. 59
REFERENCES Barton and
Behre, 1954; Smith and others, 1983; Smith and Tingley, 1983; Garside, 1973;
Longwell and others, 1965
NOTES
NO. 49
NAME Desert Valley
mine
OTHER NAME Desert Valley prospect
COUNTY
Clark
LOCATION NE¼ Sec. 2, T24S, R56E
UTMN
3972850
UTME 621320
DISTRICT
Goodsprings
QUAD Green Monster Mine 7.5'
(1984)
DEVELOPMENT Several small pits and trenches, and an
inclined shaft about 50 feet deep with short drifts at two
levels.
RADIOACTIVITY Background = 15 cps, High = 90 cps
(dump).
GEOLOGY A very small amount of dumontite and
anomalously radioactive copper minerals are reported from the dump and the
underground workings. Limonite, galena, and oxidized copper, zinc, and lead
minerals occur along vertical fractures in a shear zone in dolomitized Bullion
Limestone just below the base of the Arrowhead Limestone (Mississippian). The
shear zone is nearly parallel to bedding, which here strikes N58ºW and dips
65ºSW.
RADIOACTIVE MINERALS Anomalously radioactive copper
minerals; dumontite
HOST ROCK Sedimentary: Mississippian
Bullion Dolomite and Arrowhead Limestone Members of Monte Cristo
Limestone
MAIN COMMODITIES U
OLD MAP NO.
58
REFERENCES Barton and Behre, 1954; Longwell and others,
1965; p. 189, Smith and others, 1983; Smith and Tingley, 1983; Garside, 1973;
Castor and Ferdock, 2004.
NOTES
NO. 50
NAME Eureka
mine
COUNTY Clark
LOCATION Sec. 27, T25S,
R58E
UTMN 3955640
UTME
638630
DISTRICT Goodsprings
QUAD State Line
Pass 7.5' (1985)
OTHER PRODUCTION 1911-1922: small quantity of
ore
DEVELOPMENT A few shallow workings.
RADIOACTIVITY
Background = 10 cps, High = 50 cps.
GEOLOGY Slightly
anomalous radioactivity is associated with limonite and oxidized copper
minerals. The ore occurred in brecciated, dolomitized Yellowpine
Limestone.
RADIOACTIVE MINERALS Anomalously radioactive copper
minerals and limonite
HOST ROCK Sedimentary: Mississippian
Yellowpine Limestone Member of Monte Cristo Limestone
MAIN COMMODITIES
Ag, Pb, Zn
OTHER COMMODITIES U(?)
OLD MAP NO.
91
REFERENCES Barton and Behre, 1954; Longwell and
others, 1965; Smith and others, 1983; Smith and Tingley, 1983.
NOTES
NO. 51
NAME
First Chance group (20 claims)
COUNTY Clark
LOCATION
Sec. 25, T18S, R70E
UTMN 4025000
UTME
757500
DISTRICT Gold Butte
QUAD Gold Butte
7.5' (1984)
DEVELOPMENT 500 feet of bulldozer
road
RADIOACTIVITY Background = 0.02 mR/hr, High = 0.20 mR/hr.
Samples contain up to 0.32% cU3O8.
GEOLOGY Carnotite or
uranophane occurs as disseminations or coatings in a sandstone of the Tertiary
Horse Spring Formation.
RADIOACTIVE MINERALS carnotite or
uranophane
HOST ROCK Sedimentary: Tertiary Horse Spring
Formation
MAIN COMMODITIES U
OLD MAP NO.
18
REFERENCES AEC Report 3313; Finch, 1967; Longwell and
others, 1965, p. 183; Mason and others, 1996; Garside, 1973; Castor and Ferdock,
2004
NOTES MRDS M242248, Location uncertain, UTMs from near
center of Sec. 25. MRDS places location in T19S - typo(?)
NO. 52
NAME Fitzhugh Lee
mine
COUNTY Clark
LOCATION N½ Sec. 36, T24S,
R57E
UTMN 3964580
UTME
632200
DISTRICT Goodsprings
QUAD Shenandoah
Peak 7.5' (1985)
OTHER PRODUCTION 1915-1917: 29 tons ore, 125
oz Ag, 9,762 lbs Cu
DEVELOPMENT Several trenches and a short
tunnel
RADIOACTIVITY Background = 10 cps, High = 35
cps.
GEOLOGY Slightly anomalous radioactivity is associated
with limonite and sporadic malachite and chrysocolla in a shear zone in the
Monte Cristo Limestone.
RADIOACTIVE MINERALS Anomalously
radioactive chrysocolla, limonite, and malachite
HOST ROCK
Sedimentary: Mississippian Dawn Limestone Member of Monte Cristo
Limestone
MAIN COMMODITIES Cu
OTHER COMMODITIES
Ag, U(?)
OLD MAP NO. 74
REFERENCES
Barton and Behre, 1954; Hewett, 1931; Smith and others, 1983; Smith and Tingley,
1983; Mason and others, 1996; Garside, 1973
NOTES MRDS: M031107
NO. 53
NAME Fry and
Jeffers claim
COUNTY Clark
LOCATION Sec. 6
oR7, T13S, R64E (unsurveyed). Projected from the west
UTMN
4079000
UTME 690000
QUAD Wildcat Wash SE 7.5'
(1969)
RADIOACTIVITY Background = 0.032 mR/hr, High = 0.05
mR/hr. Samples contain 0.65% eU3O8 (0.11 cU3O8) and 0.23% eU3O8 (0.009
cU3O8).
GEOLOGY Slight radioactivity is present in a black
Paleozoic limestone. No structure was noted.
HOST ROCK
Sedimentary: Paleozoic black limestone
MAIN COMMODITIES
U
OLD MAP NO. 107
REFERENCES AEC Report 3331;
Garside, 1973.
NOTES Exact location uncertain, UTMs from near
center of 2 sections.
NO. 54
NAME
Golden Glow and Carnotite Lode prospects
OTHER NAME
Overton property; Perkin Brothers claims(?).
COUNTY
Clark
LOCATION Sec. 16, T16S, R67E
UTMN
4046800
UTME 723700
DISTRICT
Moapa
QUAD Overton 7.5' (1983), Weiser Ridge 7.5'
(1983)
DEVELOPMENT About 15 prospect
pits.
RADIOACTIVITY Samples contain up to 0.045% cU3O8.
Radiometric assays are about 15% greater.
GEOLOGY Carnotite
occurs with opal and calcite along fractures in clays, conglomerates, and
tuffaceous sandstones of the Cretaceous(?) or Tertiary(?) Overton
Fanglomerate.
RADIOACTIVE MINERALS carnotite
HOST
ROCK Sedimentary: Cretaceous(?) or Tertiary(?) Overton
Fanglomerate
MAIN COMMODITIES U
OLD MAP NO.
31
REFERENCES U.S. Atomic Energy. Comm. Prelim. Reconn. Report
3369; Finch, 1967; Longwell and others, 1965, pl. 2; Garside, 1973
NOTES
Location uncertain, UTMs from near center of Sec. 20. Johnson and
Glynn (1982) believe the Carnotite No. 1 to be the same as the Golden Glow and
Carnotite Lode.
NO. 55
NAME
Green Monster mine
COUNTY Clark
LOCATION
Center W½ Sec. 1, T24S, R56E
UTMN 3972250
UTME
622040
DISTRICT Goodsprings
QUAD Green
Monster Mine 7.5' (1984)
U PRODUCTION 1951: One shipment of 5
tons containing 1.09% U3O8
OTHER PRODUCTION 1916-1918: 2,417
tons of mostly Zn ore valued at $81,752
DEVELOPMENT Extensive
workings consisting of over 2,300 feet of drifts and crosscuts on three levels.
Workings (for lead and zinc) extend to a depth of 380
feet.
RADIOACTIVITY (Underground): Background = 20 cps, High =
3,100 cps. Select samples contain up to 10.5% cU3O8.
GEOLOGY
Kasolite and dumontite occur with secondary copper and lead minerals in a 1- to
2-foot-wide zone on the footwall side of the upper ore shoot of oxidized
lead-zinc material. Limonite, chrysocolla, and hydrozincite are also
radioactive. Hydrozincite is reportedly only radioactive near copper staining.
The lead-zinc ore occurs in tabular bodies which plunge 30° to 60° SE in the
Mississippian Monte Cristo Limestone. Ore is localized along brecciated fault
intersections. Hydrozincite is the predominant ore mineral, but calamine,
smithsonite, galena, cerussite, and anglesite are also present. Primary uranium
minerals may be present at depth in the unoxidized ore. This mine has the best
uranium shows in the Goodsprings district. Boltwoodite occurs as pale greenish
yellow radiating groups of microcrystals and as yellow pulverulent
masses.
RADIOACTIVE MINERALS Anomalously radioactive
chrysocolla, and hydrozincite, and limonite; boltwoodite; dumontite;
kasolite
HOST ROCK Sedimentary: Mississippian Monte Cristo
Limestone
MAIN COMMODITIES Zn
OTHER COMMODITIES
Ag, Au, Cu, Pb, U
NBMG SAMPLE 1160
OLD MAP NO.
57
REFERENCES AEC Reports 3379, 3381, 3381a, 338lb,
338lc, 338ld, Barton and Behre, 1954; Lovering, 1954; Brokaw, 1944; Longwell and
others, 1965; Albritton and others, 1954; Mining Journal, 1945; Mason and
others, 1996; Smith and others, 1983; Smith and Tingley, 1983; Couch and
Carpenter, 1943; Garside, 1973; Castor and Ferdock, 2004; Luning and others,
1982 no. 9.
NOTES MRDS M031109
NO. 56
NAME Gypsum Cave
area
COUNTY Clark
LOCATION NE¼ Sec. 10, SE¼
Sec. 10, W½ Sec. 12, and NE¼ Sec. 14, T20S, R63E, locations
approximate
UTMN 4010000
UTME
687000
DISTRICT Las Vegas
QUAD Frenchman
Mountain 7.5' (1983)
RADIOACTIVITY Anomalous, but not ore
grade.
GEOLOGY Four airborne radioactive anomalies were
reported in the Gypsum Cave area, east of Sunrise Mountain. Anomalous areas are
reportedly underlain by a coarsely crystalline granite which may cut Tertiary
(Miocene?) lacustrine deposits.
HOST ROCK Sedimentary: Tertiary
(Miocene?) lacustrine deposits
MAIN COMMODITIES U(?)
OLD
MAP NO. 111
REFERENCES Barrett and Mallory, 1955;
Garside, 1973.
NOTES Exact location uncertain, UTMs from near
center of two sections.
NO.
57
NAME H and E property
COUNTY
Clark
LOCATION SW¼ Sec. 4, T27S, R64E
UTMN
3943840
UTME 694960
QUAD Ireteba Peaks 7.5'
(1984)
GEOLOGY Anomalous radioactivity has been reported in
Precambrian rocks.
HOST ROCK Metamorphic: Precambrian
rocks
MAIN COMMODITIES U(?)
OLD MAP NO.
118
REFERENCES U.S. Atomic Energy Comm. unpublished map;
Garside, 1973.
NOTES UTMs from prospect symbol on topographic
map.
NO. 58
NAME Hatchet
mine
COUNTY Clark
LOCATION Sec. 36(?), T23S,
R56E
UTMN 3974000
UTME
622300
DISTRICT Goodsprings
QUAD Green Monster
Mine 7.5' (1984)
RADIOACTIVITY Background = 10 cps, High = 80
cps.
GEOLOGY Anomalous radioactivity is associated with
limonite, oxidized copper minerals, and hydrozincite. Section 36 is mostly
underlain by limestone of the Mississippian Bird Spring
Formation
RADIOACTIVE MINERALS Anomalously radioactive copper
minerals, hydrozincite, and limonite
HOST ROCK Sedimentary:
Mississippian Bird Spring Formation
MAIN COMMODITIES Cu,
U(?)
OLD MAP NO. 55
REFERENCES Barton and
Behre, 1954; Garside, 1973; Longwell and others, 1965
NOTES
Location uncertain, UTMs from near center of Sec. 36.
NO. 59
NAME Hermosa
mine
OTHER NAME Hermosa claim
COUNTY
Clark
LOCATION SE¼ SE¼ Sec. 32, T24S, R58E
UTMN
3963840
UTME 636580
DISTRICT
Goodsprings
QUAD Goodsprings 7.5' (1989)
OTHER
PRODUCTION Early 1900s: several cars of mostly Pb
ore
DEVELOPMENT Surface pits and a small amount of underground
workings.
RADIOACTIVITY Background = 10 cps, High = 50
cps.
GEOLOGY Slightly anomalous radioactivity is associated
with limonite. Cerussite, wulfenite, galena, and pyromorphite occur in a breccia
zone parallel to the bedding in the Bird Spring Formation
(Mississippian).
RADIOACTIVE MINERALS Anomalously radioactive
limonite
HOST ROCK Sedimentary: Mississippian Bird Spring
Formation
MAIN COMMODITIES Pb
OTHER COMMODITIES
Mo, U(?), Zn
OLD MAP NO. 83
REFERENCES
Barton and Behre, 1954; Hewett, 1931; Schilling, 1962; Smith and others, 1983;
Smith and Tingley, 1983; Mason and others, 1996; Garside, 1973; 1979
NOTES
MRDS: M030077
NO.
60
NAME Hidden Valley Calcrete
COUNTY
Clark
LOCATION Sec. 8(?), T24S, R61E
UTMN
3971000
UTME 665000
QUAD Hidden Valley 7.5'
(1989)
RADIOACTIVITY Background = 1-2 cps Bi214, High = 3.5 cps
Bi214. Assays up to 600 ppm cU, although 30 ppm cU is more characteristic of the
occurrence.
GEOLOGY Carnotite occurs as films on fracture
surfaces in calcrete exposed near the axis of Hidden Valley. The occurrence is
in the middle part of a calcrete zone, which is up to 18 feet thick. The
calcrete is buried by recent alluvium in lower Hidden Valley, where more
occurrences might be buried.
RADIOACTIVE MINERALS
carnotite
HOST ROCK Sedimentary: Quaternary(?)
calcrete
MAIN COMMODITIES U
OLD MAP NO.
47B
REFERENCES Carlisle, 1978; Garside, 1979
NOTES
Location uncertain, UTMs from center of E½ of which is partly in
valley fill.
NO. 61
NAME
Highline mine
OTHER NAME Highline and Red Steak
claims
COUNTY Clark
LOCATION E½ Sec. 26, T24S,
R57E
UTMN 3966020
UTME
630850
DISTRICT Goodsprings
QUAD Shenandoah
Peak 7.5' (1985)
OTHER PRODUCTION 1917-1920: 477 tons ore; 44
oz Au, 272 oz Ag, 290,611 lbs Cu per ton
DEVELOPMENT Several
hundred feet of workings on two levels.
RADIOACTIVITY
Background = 10 cps, High = 60 cps.
GEOLOGY Anomalous
radioactivity is reportedly associated with limonite and oxidized copper
minerals. The workings explore a shear zone in the Sultan Limestone that
contains oxidized copper and cobalt minerals. A small amount of chalcocite is
present, but the most abundant material is a mixture of chrysocolla, tenorite,
malachite, and cobalt oxide in a siliceous iron-oxide gangue. Veins and lenses
of chalcopyrite and a cobalt sulfide may have made up the original
ore.
RADIOACTIVE MINERALS Anomalously radioactive
limonite
HOST ROCK Sedimentary: Devonian Sultan
Limestone
MAIN COMMODITIES Cu
OTHER COMMODITIES
Ag, Au, Co, Cu, U(?)
OLD MAP NO. 67
REFERENCES
Barton and Behre, 1954; Hewett, 1931; Smith and others, 1983; Smith and
Tingley, 1983; Mason and others, 1996; Garside, 1973
NOTES
MRDS: M031110
NO. 62
NAME
Hilltop mine
COUNTY Clark
LOCATION NW¼ Sec.
21, T19S, R70E (protracted).
UTMN 4017740
UTME
752920
DISTRICT Gold Butte
QUAD Gold Butte
7.5' (1984)
U PRODUCTION 1950s(?): Thirty pounds of samarskite
was produced from a pocket cut by the short adit.
DEVELOPMENT
Short adit.
RADIOACTIVITY A sample of pure(?) samarskite
contained 11.3% U308. Allanite-bearing pegmatite contained 2,200 ppm Th and 110
ppm U3O8.
GEOLOGY A lenticular quartz-feldspar pegmatite body
that trends north and dips steeply to the east cuts a coarse-grained porphyritic
granite. The pegmatite is 30 feet wide and is exposed for more than 180 feet.
Samarskite (or euxenite) occurs as distinct masses which are sparsely and
irregularly distributed in the dike. Other minerals include monazite(?), purple
fluorite, epidote, clinozoisite, muscovite, biotite, magnetite,
stibiotantalite(?), and chlorite(?). The quartz and feldspar appear to be of
commercial grade. Dexter and others (1983) reported allanite.
RADIOACTIVE
MINERALS monazite(?); samarskite or euxenite
HOST ROCK
Intrusive: pegmatite
MAIN COMMODITIES U, Th
OLD
MAP NO. 25
REFERENCES AEC Report 3368; Longwell and
others, 1965, p. 131; Volborth, 1962a; Staatz, 1964; Mason and others, 1996;
Smith and Tingley, 1983; Smith and others, 1983; Garside, 1973; Dexter and
others, 1983.
NOTES MRDS M031056
NO. 63
NAME Hoosier
mine
COUNTY Clark
LOCATION Sec. 5, T25S,
R58E
UTMN 3962850
UTME
636400
DISTRICT Goodsprings
QUAD Goodsprings
7.5' (1989)
OTHER PRODUCTION 1906-1928: 1,624 tons ore; 3 oz
Au, 3,780 oz Ag, 2,737 lbs Cu, 761,670 lbs Pb, 272,028 lbs Zn per
ton
DEVELOPMENT Several stopes accessible by three
adits.
RADIOACTIVITY Background = 10 cps, High = 50
cps.
GEOLOGY Slightly anomalous radioactivity is reportedly
associated with hydrozincite. Galena (locally altered to cerussite), hydrocite,
and other zinc minerals occur in a crushed zone of dolomite near the base of the
Bird Spring Formation.
RADIOACTIVE MINERALS Anomalously
radioactive hydrozincite
HOST ROCK Sedimentary: Mississippian
Bird Spring Formation
MAIN COMMODITIES Pb, Zn
OTHER
COMMODITIES Ag, Au, Cu, Mo, U(?)
OLD MAP NO.
81
REFERENCES AEC Report 3360; Barton and Behre, 1954; Hewett,
1931; Longwell and others, 1965; Smith and others, 1983; Smith and Tingley,
1983; Mason and others, 1996; Garside, 1973
NOTES MRDS: M031111
NO. 64
NAME Horse Springs
Formation type locality
COUNTY Clark
LOCATION
Sec. 2, T19S, R70E (protracted)
UTMN 4022811
UTME
756365
DISTRICT Gold Butte
QUAD Gold
Butte 7.5' (1984)
DEVELOPMENT Bulldozer roads, 9 drill holes,
11 m adit, prospect pits.
RADIOACTIVITY Gypsiferous horizon up
to 2 times background; up to 25 times background in drill holes (<75m).
Analyses of over 200 ppm U3O8 were reported.
GEOLOGY Carnotite
is found in northwest-striking, southwest-dipping joints in a gypsiferous zone
in the Tertiary Horse Spring Formation. The gypsiferous zone was interpreted as
a bedding-plane fault. The mineralized beds are gypsiferous limestone and
calcareous sandstone.
RADIOACTIVE MINERALS carnotite
HOST
ROCK Sedimentary: Tertiary Horse Spring Formation
MAIN
COMMODITIES U
REFERENCES Johnson and Glynn, 1982,
no. 1.
NOTES The reported location of this property is closest
to that of the Lucky Bart prospect. However, Johnson and Glynn (1982) suggest
this locality represents the Blue Chip, Frank Robbin, South Valley No. 2, First
Chance, Long Shot, and Lucky Bart properties. UTMs from Johnson and Glynn
(1982). Prospect symbols on the Gold Butte quadrangle are in S½ Sec. 2.
NO. 65
NAME Horse Springs group
(Nos. 1 and 2), Green Spot group (Nos. 1 and 2)
OTHER NAME
Horse Spring.
COUNTY Clark
LOCATION Sec. 3(?),
T19S, R70E (unsurveyed), projected from the west
UTMN
4022000
UTME 753000
DISTRICT Gold
Butte
QUAD Gold Butte 7.5' (1984)
RADIOACTIVITY
About twice background. A select grab sample contained only 0.0008%
U3O8.
GEOLOGY Carnotite and opal fill joints and fractures in
steeply dipping silicic and calcareous sediments of the Triassic Chinle(?)
Formation. Hydrothermal alteration is reported.
RADIOACTIVE MINERALS
carnotite
HOST ROCK Sedimentary: Triassic Chinle(?)
Formation
MAIN COMMODITIES U
OLD MAP NO.
22
REFERENCES AEC Report 3366; Garside, 1973
NOTES
Location uncertain, UTMs from near center of Sec. 3.
NO. 66
NAME Humdinger, Lake View,
Lake View No.1 claims
OTHER NAME Lakeview; Localities 22, 23,
24, 25, 26.
COUNTY Clark
LOCATION SE¼ Sec. 24,
and NE¼ Sec. 25, T24S, R59E
UTMN 3966740
UTME
652800
DISTRICT Sutor
QUAD Jean 7.5 '
(1989)
DEVELOPMENT Several prospect
pits.
RADIOACTIVITY Background = 15 cps, High = 30
cps.
GEOLOGY Carnotite occurs as small patches and films on
sandstone and limestone of the Permian Toroweap Formation. Visible carnotite is
not abundant enough to produce high radioactivity.
RADIOACTIVE
MINERALS carnotite
HOST ROCK Sedimentary: Permian
Toroweap Formation
MAIN COMMODITIES U
OLD MAP NO.
50
REFERENCES Barton and Berne, 1954; Hewett, 1923;
Finch, 1967; Garside, 1973
NOTES UTMs from Locality 25 which is
in the approximate center of cluster of localities 22 through 26.
NO. 67
NAME Iron Gold
mine
COUNTY Clark
LOCATION NW¼ SW¼ Sec. 21,
T24S, R58E
UTMN 3967340
UTME
637650
DISTRICT Goodsprings
QUAD Goodsprings
7.5' (1989)
DEVELOPMENT 100-foot shaft
GEOLOGY
Water from a pool at the bottom of a 100-foot-deep shaft contained 4.9
micromicrocuries per liter of radium and 110 micrograms per liter of uranium.
Shales, limestones, and tuffs of the Triassic Moenkopi Formation cut by a
granite porphyry dike are reported present in the shaft. The radium probably
indicates the presence of volcanic or intrusive igneous rock.
RADIOACTIVE
MINERALS radon and uranium dissolved in water
HOST ROCK
Sedimentary/Intrusive: Triassic Moenkopi Formation, Cretaceous(?) granite
porphyry dike
MAIN COMMODITIES Ra, U
OLD MAP NO.
80
REFERENCES Scott and Barker, 1962; Smith and others,
1983; Smith and Tingley, 1983; Garside, 1973
NOTES
NO. 68
NAME Ironside
mine
OTHER NAME Iron Side mine
COUNTY
Clark
LOCATION W½ Sec. 26, T24S, R57E
UTMN
3966200
UTME 630220
DISTRICT
Goodsprings
QUAD Shenandoah Peak 7.5'
(1985)
DEVELOPMENT Two adits.
RADIOACTIVITY
Background = 10 cps, High = 60 cps.
GEOLOGY Radioactivity is
localized in limonite and oxidized copper minerals. Mineralization is in the
Devonian Sultan Limestone.
RADIOACTIVE MINERALS Anomalously
radioactive copper minerals and limonite
HOST ROCK Sedimentary:
Devonian Sultan Limestone
MAIN COMMODITIES Cu
OTHER
COMMODITIES U(?)
OLD MAP NO. 64
REFERENCES
Barton and Behre, 1954; Longwell and others, 1965; p. 191; Smith and
others, 1983; Smith and Tingley, 1983; Mason and others, 1996; Garside, 1973;
Hewett, 1931
NOTES MRDS: M031115
NO. 69
NAME J. V.
property
COUNTY Clark
LOCATION Sec. 10(?),
T18S, R70E. Exact location unknown
UTMN 4030000
UTME
753500
DISTRICT Gold Butte
QUAD Devils
Throat 7.5' (1983)
GEOLOGY No information is available on this
claim. Section 10 is generally underlain by Mississippian through Permian
carbonates and minor sandstone and red beds.
HOST ROCK
Sedimentary: Mississippian-Permian carbonates and minor sandstone and red
beds
MAIN COMMODITIES U(?)
OLD MAP NO.
15
REFERENCES U.S. Atomic Energy Comm. unpublished; Garside,
1973; Longwell and others, 1965
NOTES Location uncertain, UTMs
from near center of Sec. 10
NO.
70
NAME Keystone mine
COUNTY
Clark
LOCATION NW¼ Sec. 30, T24S, R58E
UTMN
3966670
UTME 633510
DISTRICT
Goodsprings
QUAD Shenandoah Peak 7.5' (1985)
OTHER
PRODUCTION 1892-1902: intermittent Au production, 1902-1920: 14,831
tons ore, 9,897 oz Au, 1,539 oz Ag
DEVELOPMENT Three adits and
two shafts.
RADIOACTIVITY Background = 10 cps, High = 25
cps.
GEOLOGY Limonite from a dump is very slightly
radioactive.
RADIOACTIVE MINERALS Anomalously radioactive
limonite
HOST ROCK Sedimentary: Cambrian-Devonian Goodsprings
Dolomite
MAIN COMMODITIES Au, Cu
OTHER COMMODITIES
Ag, U(?)
OLD MAP NO. 75
REFERENCES
Barton and Behre, 1954; Longwell and others, 1965; Smith and others, 1983; Smith
and Tingley, 1983; Mason and others, 1996; Garside, 1973; Hewett,
1931
NOTES MRDS: M031116
NO.
71
NAME Last Chance claim
COUNTY
Clark
LOCATION NW¼(?) T16S, R67E, Exact location unknown.
Possibly in the vicinity of the corner of T15S, and T16S, R66E and
R67E
UTMN 4050700
UTME
718650
DISTRICT Moapa
QUAD Weiser Ridge 7.5'
(1983)
DEVELOPMENT Numerous prospect
pits.
RADIOACTIVITY High = 0.25 mR/hr, a grab sample gave a
reading of 0.03 mR/hr
GEOLOGY A shaly, jarosite(?) stained
sandstone containing abundant carbonaceous trash is abnormally radioactive. The
bed is near the top of the Triassic Shinarump Member of the Chinle Formation.
The dip is nearly vertical.
RADIOACTIVE MINERALS Abnormally
radioactive carbonaceous material(?)
HOST ROCK Sedimentary:
Triassic Shinarump Member of the Chinle Formation
MAIN COMMODITIES
U(?)
OLD MAP NO. 29
REFERENCES AEC
Report 3330; Bohannon, 1992; Garside, 1973
NOTES Location
uncertain, UTMs from point where Shinarump Member bed crosses township line.
NO. 72
NAME Lincoln
mine
COUNTY Clark
LOCATION NW¼ Sec. 13, T25S,
RS8E
UTMN 3960200
UTME
642780
DISTRICT Goodsprings
QUAD Goodsprings
7.5' (1989)
OTHER PRODUCTION 1910-1917: 46 tons ore, 0.3 oz Au,
1,083 oz Ag, 11,095 lbs Cu
DEVELOPMENT A 350-foot-long inclined
shaft and several small stopes.
RADIOACTIVITY Background = 10
cps, High = 90 cps.
GEOLOGY Slightly anomalous radioactivity is
associated with limonite and oxidized copper minerals. Veins and veinlets of
chrysocolla, and probably other copper minerals, occur in dolomite about 800
feet below the top of the Goodsprings Dolomite (Cambrian). Some silver chloride
and bromide, and cobalt oxide are reported.
RADIOACTIVE MINERALS
Anomalously radioactive chrysocolla and other copper minerals and
limonite
HOST ROCK Sedimentary: Cambrian-Devonian Goodsprings
Dolomite
MAIN COMMODITIES Ag, Cu
OTHER COMMODITIES
Au, U(?)
OLD MAP NO. 90
REFERENCES AEC
Report 3345; Barton and Behre, 1954; Longwell and others, 1965; Hewett, 1931;
Smith and others, 1983; Smith and Tingley, 1983; Mason and others, 1996;
Garside, 1973
NOTES MRDS: M031118
NO. 73
NAME Little Betty
claim
COUNTY Clark
LOCATION SE¼ NW¼ Sec. 13,
T25S, R58E
UTMN 3959900
UTME
642300
DISTRICT Goodsprings
QUAD Goodsprings
7.5' (1989)
RADIOACTIVITY Background = 15 cps, High = 70
cps.
GEOLOGY Anomalous radioactivity is reportedly associated
with hydrozincite and iron-rich chert. Most of the quarter-quarter section is
underlain by the Cambrian-Devonian Goodsprings Dolomite
RADIOACTIVE
MINERALS Anomalously radioactive hydrozincite and iron-rich
chert
HOST ROCK Sedimentary: Cambrian-Devonian Goodsprings
Dolomite
MAIN COMMODITIES U(?)
OLD MAP NO.
89
REFERENCES Barton and Behre, 1954; Garside, 1973
NOTES
UTMs from center of quarter-quarter section.
NO. 74
NAME Little Hal, Steve
Nos. 1 and 11 claims
COUNTY Clark
LOCATION
Location: Sec. 25(?) or 26(?), T20S, R62E
UTMN
4005700
UTME 679000
DISTRICT Las
Vegas
QUAD Las Vegas NE 7.5' (1984)
DEVELOPMENT
Prospect pits.
RADIOACTIVITY Background = 0.025 mR/hr,
High = 0.5 mR/hr
GEOLOGY Anomalous radioactivity is associated
with pegmatite dikes in Precambrian metamorphic rocks.
HOST ROCK
Intrusive: Pegmatite dike
MAIN COMMODITIES
U(?)
OLD MAP NO. 110
REFERENCES AEC Report
3332.
NOTES Exact location uncertain, UTMs from near center of
sections.
NO. 75
NAME
Little Snake, Purple Valentine, etc. claims.
COUNTY
Clark
LOCATION Secs. 4, 15, 16, 28, T23S, R60E
UTMN
3979300
UTME 655730
DISTRICT
Sloan
QUAD Bird Spring 7.5' (1989)
DEVELOPMENT
Several pits and trenches.
RADIOACTIVITY Background = 0.015
mR/hr, High = 0.07 mR/hr. Samples range from 0.014 to 0.15%
cU3O8
GEOLOGY Uranium occurs in sandy horizons of the Permian
Kaibab and underlying Supai Formations. In some prospect pits, carnotite is
present as joint coatings or associated with faults.
RADIOACTIVE
MINERALS carnotite
HOST ROCK Sedimentary: Permian
Kaibab and Supai Formations
MAIN COMMODITIES U
OLD MAP
NO. 36
REFERENCES AEC Report 3309; Finch, 1967;
Garside, 1973; Castor and Ferdock, 2004; Luning and others, 1982, no.
7.
NOTES UTMs from prospect symbol in Sec. 16; this section is
given as the prospect location by Luning and others (1982).
NO. 76
NAME Localities
17
OTHER NAME Localities 17 and 18
COUNTY
Clark
LOCATION NW¼ NE¼ Sec. 6, T25S, R60E
UTMN
3963900
UTME 653760
DISTRICT
Sutor
QUAD Jean 7.5 ' (1989)
GEOLOGY Carnotite
reportedly occurs with caliche as coatings and films along joints in the Erie
Tuff. The caliche is composed of fine-grained calcite and
gypsum.
RADIOACTIVE MINERALS carnotite
HOST ROCK
Volcanic: Erie Tuff
MAIN COMMODITIES U
OLD MAP
NO. 52
REFERENCES Barton and Behre, 1954; Garside,
1973
NOTES
NO.
77
NAME Localities 18
OTHER NAME Localities 17
and 18
COUNTY Clark
LOCATION SE¼ NW¼ Sec. 6,
T25S, R60E
UTMN 3963440
UTME
653700
DISTRICT Sutor
QUAD Jean 7.5 '
(1989)
GEOLOGY Carnotite reportedly occurs with caliche as
coatings and films along joints in the Erie Tuff. The caliche is composed of
fine-grained calcite and gypsum.
RADIOACTIVE MINERALS
carnotite
HOST ROCK Volcanic: Erie Tuff
MAIN
COMMODITIES U
REFERENCES Barton and Behre, 1954;
Garside, 1973
NOTES
NO.
78
NAME Localities 9, 10, 11, 12, 13
COUNTY
Clark
LOCATION SW¼ Sec. 36, T23S, R60E, and NE¼ Sec. 2, T24S,
R60E, Along the Union Pacific Railroad.
UTMN
3973940
UTME 660340
DISTRICT
Sloan
QUAD Sloan 7.5' (1989)
DEVELOPMENT
Railroad cut.
RADIOACTIVITY Background = 20 to 25 cps, High =
50 to 90 cps. A select sample from Locality 11 contained 0.008%
cU3O8.
GEOLOGY Carnotite occurs as specks and coatings on
joints in the Erie Tuff, with caliche coatings, and in sand and gravel beds
which are younger than the tuff. The sand and gravel units overlie an
unmineralized basalt which overlies the Erie Tuff.
RADIOACTIVE
MINERALS carnotite
HOST ROCK Volcanic: Erie
Tuff
MAIN COMMODITIES U
OLD MAP NO.
43
REFERENCES Barton and Behre, 1954; Garside, 1973; Castor and
Ferdock, 2004.
NOTES UTMs from Locality 11 which is in the
approximate center of series of railroad cuts along a 1.9 km stretch of track
where Localities 9 through 13 are located.
NO.
79
NAME Locality 1
COUNTY
Clark
LOCATION NE¼ NW¼ Sec. 2, T23S, R60E, along the Union
Pacific Railroad.
UTMN 3983420
UTME
659160
DISTRICT Sloan
QUAD Sloan 7.5'
(1989)
DEVELOPMENT Railroad cuts.
RADIOACTIVITY
No areas reported above background (10 cps).
GEOLOGY A
very small amount of carnotite occurs sporadically as minute specks along
bedding planes and joint surfaces in limestones, sandstones, and shales of the
Mississippian Bird Spring Formation.
RADIOACTIVE MINERALS
carnotite
HOST ROCK Sedimentary: Mississippian Bird Spring
Formation
MAIN COMMODITIES U
OLD MAP NO.
34
REFERENCES Barton and Behre, 1954; Garside, 1973; Castor and
Ferdock, 2004.
NOTES
NO.
80
NAME Locality 14
OTHER NAME Erie to Arden
along Union Pacific Railroad.
COUNTY Clark
LOCATION
NW¼ NE¼ Sec. 11, T24S, R60E
UTMN 3972060
UTME
659700
DISTRICT Sloan
QUAD Sloan 7.5'
(1989)
RADIOACTIVITY Background = 20 cps, High = 40 cps. A
mineralized limestone pebble 2 inches in diameter registered 10 times
background. Up to 0.03% U3O8 reported.
GEOLOGY Tyuyamunite
occurs as scattered blebs and patches in a caliche-cemented Quaternary gravel.
The total uranium content of the gravel is very low. The caliche zone has been
estimated to contain approximately 0.03% U3O8.
RADIOACTIVE MINERALS
tyuyamunite
HOST ROCK Sedimentary: Quaternary
caliche-cemented gravel bed
MAIN COMMODITIES U
OLD MAP
NO. 44
REFERENCES AEC Report 3356; Carper, 1954,
Barton and Behre, 1954; Finch, 1967; Garside, 1973; Castor and Ferdock,
2004.
NOTES
NO.
81
NAME Locality 15
COUNTY
Clark
LOCATION N½ Sec. 21, and SE¼ Sec. 16, T24S,
R60E
UTMN 3968660
UTME
657220
DISTRICT Sloan
QUAD Jean 7.5 '
(1989)
DEVELOPMENT Several highway and railroad
cuts.
RADIOACTIVITY Background = 10 cps, High = 15
cps.
GEOLOGY Extremely small amounts of carnotite occur in
gravels which are composed of pebbles of Erie Tuff and
limestone.
RADIOACTIVE MINERALS carnotite
HOST ROCK
Sedimentary: Quaternary(?) gravel
MAIN COMMODITIES
U
OLD MAP NO. 47A
REFERENCES Barton and Behre,
1954; Garside, 1973; 1979; Castor and Ferdock, 2004.
NOTES
NO. 82
NAME Locality
16
OTHER NAME Red Turtle
COUNTY
Clark
LOCATION Center of Secs. 29, 30, 31, 32, T24S, R60E; Jean
Underpass.
UTMN 3965700
UTME
654660
DISTRICT Sutor
QUAD Jean 7.5 '
(1989)
DEVELOPMENT Prospect pits, highway and railroad
cuts.
GEOLOGY Carnotite occurs as films and specks in caliche
and on pebbles of crystalline rock and limestone. The unit is a gravel which
underlies the Erie Tuff.
RADIOACTIVE MINERALS
carnotite
HOST ROCK Sedimentary: gravel
MAIN
COMMODITIES U
OLD MAP NO. 46
REFERENCES
Barton and Behre, 1954; Finch, 1967; Garside, 1973; Castor and Ferdock,
2004.
NOTES
NO.
83
NAME Locality 2
COUNTY
Clark
LOCATION SW¼ NW¼ Sec. 1, T23S, R60E; along the Union
Pacific Railroad.
UTMN 3982700
UTME
660140
DISTRICT Sloan
QUAD Sloan 7.5'
(1989)
DEVELOPMENT Railroad cuts.
RADIOACTIVITY
Background = 5 cps, High = 10 cps.
GEOLOGY Minute specks
of carnotite occur very sporadically along joints and bedding planes of the Bird
Springs Formation.
RADIOACTIVE MINERALS carnotite
HOST
ROCK Sedimentary: Mississippian Bird Spring Formation
MAIN
COMMODITIES U
OLD MAP NO. 35
REFERENCES
Barton and Behre, 1954; Garside, 1973; Castor and Ferdock,
2004.
NOTES
NO.
84
NAME Locality 20
COUNTY
Clark
LOCATION SW¼ SE¼ Sec. 8, T, 24S, R60E
UTMN
3970390
UTME 654300
DISTRICT
Sloan
QUAD Jean 7.5 ' (1989)
DEVELOPMENT Small
prospect pit.
RADIOACTIVITY Background = 10 cps, High = 15
cps.
GEOLOGY Traces of carnotite occur along joints and
slickensided minor faults in the Supai Formation.
RADIOACTIVE MINERALS
carnotite
HOST ROCK Sedimentary: Permian Supai
Formation
MAIN COMMODITIES U
OLD MAP NO.
45
REFERENCES Barton and Behre, 1954; Garside, 1973; Castor and
Ferdock, 2004.
NOTES
NO.
85
NAME Locality 27
OTHER NAME Goodsprings
occurrence
COUNTY Clark
LOCATION Center Sec.
14, T24S, R58E
UTMN 3969450
UTME
640820
DISTRICT Goodsprings
QUAD Goodsprings
7.5' (1989)
DEVELOPMENT A prospect pit about 5 feet
deep.
RADIOACTIVITY A chip sample contained 0.006%
cU3O8.
GEOLOGY A small amount of carnotite is found as small
specks on fractures in soft, buff sandstone of the Permian Toroweap
Formation.
RADIOACTIVE MINERALS carnotite
HOST ROCK
Sedimentary: Permian Toroweap Formation
MAIN COMMODITIES
U
OLD MAP NO. 53
REFERENCES Lovering, 1954;
Hewett, 1923; Barton and Behre, 1954; Finch, 1967; Garside, 1973
NOTES
NO. 86
NAME
Locality 3
COUNTY Clark
LOCATION NE¼ Sec. 12,
T23S, R60E, near the Union Pacific Railroad.
UTMN
3981440
UTME 661000
DISTRICT
Sloan
QUAD Sloan 7.5' (1989)
DEVELOPMENT 3
shallow cuts.
RADIOACTIVITY Background = 5 cps, High = 10
cps.
GEOLOGY Carnotite occurs as pebble coatings and aggregates
in earthy white caliche in Quaternary gravels.
RADIOACTIVE MINERALS
carnotite
HOST ROCK Sedimentary: Quaternary
gravels
MAIN COMMODITIES U
OLD MAP NO.
33
REFERENCES Barton and Behre, 1954; Finch, 1967; Garside,
1973; Castor and Ferdock, 2004.
NOTES
NO. 87
NAME Locality
4
COUNTY Clark
LOCATION SW¼ Sec. 13, T23S,
R60E
UTMN 3978780
UTME
660240
DISTRICT Sloan
QUAD Sloan 7.5'
(1989)
DEVELOPMENT Railroad cut
RADIOACTIVITY
Background = 5 cps, High = 15 cps. Select samples contain up to 80 ppm
U.
GEOLOGY Carnotite is fairly common, though never abundant,
in a caliche-cemented Quaternary gravel bed. The pebbles are mainly chert and
carbonate rock fragments. An overlying basalt-pebble gravel contains only sparse
carnotite. The carnotite is reportedly not radioactive, and less than 300,000 yr
old.
RADIOACTIVE MINERALS carnotite
HOST ROCK
Sedimentary: Quaternary caliche-cemented gravel bed
MAIN COMMODITIES
U
OLD MAP NO. 37
REFERENCES U.S. Atomic
Energy Comm. RME-3119, Barton and Behre, 1954; Hewett, 1923; Garside, 1973;
Castor and Ferdock, 2004; Luning and others, 1982 no. 10.
NOTES
NO. 88
NAME Locality
5
COUNTY Clark
LOCATION SW¼ NW¼ Sec. 25, T23S,
R60E
UTMN 3976260
UTME
660300
DISTRICT Sloan
QUAD Sloan 7.5'
(1989)
DEVELOPMENT Railroad cut
RADIOACTIVITY
Background = 8 cps, High = 15 cps.
GEOLOGY Carnotite occurs as
minor specks on fractures in a Tertiary sandstone and in the underlying Bird
Spring Formation.
RADIOACTIVE MINERALS carnotite
HOST
ROCK Sedimentary: Mississippian Bird Spring Formation, Tertiary
sandstone
MAIN COMMODITIES U
OLD MAP NO.
39
REFERENCES Barton and Behre, 1954; Hewett, 1923; Finch,
1967; Garside, 1973; Castor and Ferdock, 2004.
NOTES
NO. 89
NAME Locality
6
COUNTY Clark
LOCATION NE¼ SE¼ Sec. 25, T23S,
R60E
UTMN 3976050
UTME
661640
DISTRICT Sloan
QUAD Sloan 7.5'
(1989)
DEVELOPMENT A 6-foot-deep pit
RADIOACTIVITY
Background = 20 cps, High = 45 cps.
GEOLOGY Two steeply
dipping sets of joints in the Bird Spring Formation contain thin films of
carnotite. The joint sets trend north-south and east-west. Specks of carnotite
were also present in the overlying decomposed tuff and
caliche.
RADIOACTIVE MINERALS carnotite
HOST ROCK
Sedimentary: Mississippian Bird Spring Formation
MAIN
COMMODITIES U
OLD MAP NO. 40
REFERENCES
Barton and Behre, 1954; Garside, 1973; Castor and Ferdock,
2004.
NOTES
NO.
90
NAME Locality MFQ-512
COUNTY
Clark
LOCATION NE¼ Sec. 16, T19S, R70E
(protracted)
UTMN 4019205
UTME
753350
DISTRICT Gold Butte
QUAD Gold Butte
7.5' (1984)
RADIOACTIVITY High = 5,000 cps. A sample contained
1,500 ppm Th and 134 ppm U3O8.
GEOLOGY A radioactive pegmatite,
which cuts Precambrian gneiss and schist, consists of quartz, K-feldspar,
muscovite, magnetite, biotite, zircon, and monazite.
RADIOACTIVE
MINERALS monazite
HOST ROCK Intrusive: granitic
pegmatite dike
MAIN COMMODITIES U, Th
REFERENCES
Dexter and others, 1983.
NOTES
NO. 91
NAME Locality
MFQ-558
COUNTY Clark
LOCATION W½ Sec. 27,
T19S, R70E (protracted)
UTMN 4015652
UTME
754203
DISTRICT Gold Butte
QUAD Gold Butte
7.5' (1984)
RADIOACTIVITY High = 1,000 cps. A sample contained
260 ppm Th and 62 ppm U3O8.
GEOLOGY An aplite dike cuts Gold
Butte Granite. It contains accessory allanite, fluorite, biotite, thorite, and
zircon.
RADIOACTIVE MINERALS thorite
HOST ROCK
Intrusive: aplite dike
MAIN COMMODITIES U,
Th
REFERENCES Dexter and others, 1983.
NOTES
NO. 92
NAME Locality
MFQ-608
COUNTY Clark
LOCATION W½ Sec. 24,
T20S, R70E (protracted)
UTMN 4007381
UTME
758271
DISTRICT Gold Butte
QUAD Jumbo Peak
7.5' (1983)
RADIOACTIVITY High = 1,400 cps. A sample contained
540 ppm Th and only 4 ppm U3O8.
GEOLOGY A syenite pegmatite
from near the margin of the Gold Butte Granite contains zircon associated with
biotite. Monazite crystals have corroded margins and rims of apatite; the rims
contain many small blebs of thorite. The monazite/apatite grains are commonly
surrounded by allanite.
RADIOACTIVE MINERALS thorite,
allanite
HOST ROCK Intrusive: pegmatite dike
MAIN
COMMODITIES Th
REFERENCES Dexter and others,
1983.
NOTES
NO.
93
NAME Locality 7
COUNTY
Clark
LOCATION Center SW¼ Sec. 25, T23S, R60E;+E129 in a cut
along the railroad.
UTMN 3975780
UTME
660640
DISTRICT Sloan
QUAD Sloan 7.5'
(1989)
DEVELOPMENT Railroad cut.
RADIOACTIVITY
Background = 30 cps, High = 150 cps. Select samples contained 0.14 to 0.70%
cU3O8.
GEOLOGY Carnotite occurs along joints and along a N65ºW
fault in a maroon welded tuff unit of the Erie Tuff. No hydrothermal alteration
was reported present, and little difference in metal content was noted between
samples taken here and those from a fresh tuff specimen.
RADIOACTIVE
MINERALS carnotite
HOST ROCK Volcanic: Erie
Tuff
MAIN COMMODITIES U
OLD MAP NO.
41
REFERENCES Barton and Behre, 1954; Garside, 1973; Castor and
Ferdock, 2004.
NOTES
NO.
94
NAME Locality 8
COUNTY
Clark
LOCATION NE¼ NW¼ Sec. 36, T23S, R60E
UTMN
3975280
UTME 660920
DISTRICT
Sloan
QUAD Sloan 7.5' (1989)
DEVELOPMENT
Railroad cut.
RADIOACTIVITY Background = 10 cps, High = 45
cps.
GEOLOGY A few specks of carnotite are found on outcrops of
the Bird Spring Formation.
RADIOACTIVE MINERALS
carnotite
HOST ROCK Sedimentary: Mississippian Bird Spring
Formation
MAIN COMMODITIES U
OLD MAP NO.
42
REFERENCES Barton and Behre, 1954; Garside, 1973; Castor and
Ferdock, 2004.
NOTES
NO.
95
NAME Location No. 16
OTHER NAME Sample
E753
COUNTY Clark
LOCATION Sec. 17, T28S,
R61E
UTMN 3930800
UTME
665500
DISTRICT Crescent
QUAD McCullough
Mountain 7.5' (1989)
RADIOACTIVITY 5.1 ppm eU3O8, 102.3 ppm
eThO2.
GEOLOGY A sample of Precambrian mylonitic augen gneiss
contained an anomalous amount of thorium.
RADIOACTIVE MINERALS
thorium-bearing rock
HOST ROCK Metamorphic: Precambrian
mylonitic augen gneiss
MAIN COMMODITIES Th
OLD MAP
NO. 100
REFERENCES Malan and Sterling, 1969;
Garside, 1973.
NOTES Exact location uncertain, UTMs from near
center of section 17.
NO. 96
NAME
Location No.6
OTHER NAME Sample C926
COUNTY
Clark
LOCATION Sec. 22, T28S, R61E
UTMN
3929300
UTME 668600
DISTRICT
Crescent
QUAD Crescent Peak 7.5' (1984)
RADIOACTIVITY
74.7 ppm eThO2, 175.1 ppm eU3O8.
GEOLOGY A sample of
Precambrian quartz monzonitic gneiss contained an anomalous amount of uranium
and thorium.
RADIOACTIVE MINERALS thorium- and uranium-bearing
rock
HOST ROCK Metamorphic: Precambrian monzonitic
gneiss
MAIN COMMODITIES U
OLD MAP NO.
102
REFERENCES Malan and Sterling, 1969; Garside,
1973.
NOTES Exact location uncertain, UTMs from near center of
section 22.
NO. 97
NAME
Location No.7
OTHER NAME Sample C927
COUNTY
Clark
LOCATION Sec. 21, T28S, R61E
UTMN
3929300
UTME 667000
DISTRICT
Crescent
QUAD Crescent Peak 7.5' (1984)
RADIOACTIVITY
11.9 ppm eU3O8, 22.2 ppm eThO2.
GEOLOGY A sample of
Precambrian quartz monzonite contained an anomalous amount of
uranium.
RADIOACTIVE MINERALS uranium-bearing rock
HOST
ROCK Metamorphic: Precambrian quartz monzonite
MAIN
COMMODITIES U
OLD MAP NO. 101
REFERENCES
Malan and Sterling, 1969; Garside, 1973.
NOTES Exact
location uncertain, UTMs from near center of section 21.
NO. 98
NAME Long Shot NQ. (1
claim)
OTHER NAME Mutual Uranium Co.; Long Shot
prospect
COUNTY Clark
LOCATION Location: N½
Sec. 2, T19S, R70E (unsurveyed). Projected from the west
UTMN
4022540
UTME 756560
DISTRICT Gold
Butte
QUAD Gold Butte 7.5' (1984)
DEVELOPMENT
A 35-foot tunnel, several pits, and diamond drill holes.
RADIOACTIVITY
Background = 0.03 mR/hr, High = 0.7 mR/hr. Channel samples containing
0.03% U3O8 and select samples containing 2.0% U3O8 have been cut in the
tunnel.
GEOLOGY A yellow uranium mineral (either tyuyamunite or
uranophane) occurs scattered in four porous limy beds of the Tertiary Horse
Spring Formation.
RADIOACTIVE MINERALS tyuyamunite or
uranophane
HOST ROCK Sedimentary: Tertiary Horse Spring
Formation
MAIN COMMODITIES U
OLD MAP NO.
20
REFERENCES AEC Reports 3323, 3323a; Longwell and others,
1965, p. 132; Mason and others, 1996; Smith and Tingley, 1983; Smith and others,
1983; Garside, 1973; Castor and Ferdock, 2004
NOTES MRDS
M031062, UTMs from prospect on topo map. Johnson and Gleyn (1982, Plate 8b) show
the Long Shot Mine at 4022100N, 756390E
NO.
99
NAME Lucky Bart prospect (8 claims)
COUNTY
Clark
LOCATION SW¼ Sec. 2, T19S, R70E (unsurveyed). Projected
from west
UTMN 4021380
UTME
756020
DISTRICT Gold Butte
QUAD Gold Butte
7.5' (1984)
DEVELOPMENT Unknown
GEOLOGY
Autunite(?) and meta-autunite disseminated in a conglomeratic sandstone in the
Tertiary Horse Spring Formation.
RADIOACTIVE MINERALS
Autunite(?); meta-autunite
HOST ROCK Sedimentary: Tertiary
Horse Spring Formation
MAIN COMMODITIES U
OLD MAP NO.
21
REFERENCES AEC Report 3391(?); Mason and others,
1996; Smith and Tingley, 1983; Smith and others, 1983; Garside, 1973; Castor and
Ferdock, 2004
NOTES MRDS M031064, UTMs from prospect on topo
map.
NO. 100
NAME Lucy
Gray mine
COUNTY Clark
LOCATION SE¼ Sec. 32,
T27S, R60E
UTMN 3935150
UTME
656380
DISTRICT Sunset
QUAD Desert 7.5'
(1985)
OTHER PRODUCTION 1905-1911: small production, 1911-1928,
1940-1941: 1690 tons ore, 532 oz Au, 597 oz Ag, 400 lbs Cu, 16,033 lbs
Pb
DEVELOPMENT 3,200 feet of underground workings on 3 levels
(for base and precious metals).
RADIOACTIVITY Background = 0.04
mR/hr, High = 0.10 mR/hr, Average = 0.06 mR/hr. Select samples contain from 0.03
to 0.25% eU3O8.
GEOLOGY Anomalous radioactivity is probably
associated with iron and copper oxides in an elliptical breccia pipe in
Precambrian granite gneiss. Silver, gold, lead, and copper production have been
reported.
RADIOACTIVE MINERALS Anomalously radioactive copper
and iron oxide
HOST ROCK Metamorphic: Precambrian granite
gneiss
MAIN COMMODITIES Au
OTHER COMMODITIES
Ag, Cu, Pb, U(?)
NBMG SAMPLE 1312
OLD MAP NO.
120
REFERENCES AEC Report 3390; Longwell and others, 1965;
Smith and others, 1983; Smith and Tingley, 1983; Mason and others, 1996;
Garside, 1973.
NOTES MRDS: M031015
NO. 101
NAME M and E Nos. 2 and
12 claims
COUNTY Clark
LOCATION Sec. 35(?),
T25S, R63E
UTMN 3955500
UTME
689000
DISTRICT Eldorado
QUAD Keyhole Canyon
7.5' (1984)
DEVELOPMENT A 25-foot-deep shaft and several
bulldozer cuts.
RADIOACTIVITY Background = 0.015 (approx.)
mR/hr, High = 0.4 mR/hr
GEOLOGY Anomalous radioactivity occurs
in Precambrian gneiss and schist. Thorium-bearing minerals may be
present.
RADIOACTIVE MINERALS thorium-bearing
minerals(?)
HOST ROCK Metamorphic: Precambrian gneiss and
schist
MAIN COMMODITIES Th(?)
OLD MAP NO.
115
REFERENCES AEC Report 3311; Staatz, 1964; Garside,
1973.
NOTES Exact location uncertain, UTMs from near center of
Sec. 35.
NO. 102
NAME
Mary Helen and Rose Alice claims
COUNTY
Clark
LOCATION Sec. 14(?), T26S, R63E
UTMN
3950700
UTME 689300
DISTRICT
Eldorado
QUAD Keyhole Canyon 7.5'
(1984)
RADIOACTIVITY Background = 0.015 mR/hr, High = 0.5
mR/hr
GEOLOGY Anomalous radioactivity occurs in a greenstone
gneiss band in Precambrian metamorphic rocks.
HOST ROCK
Metamorphic: Precambrian greenstone gneiss
MAIN COMMODITIES
U(?)
OLD MAP NO. 117
REFERENCES AEC Report
3310; Garside, 1973.
NOTES Exact location uncertain, UTMs from
near center of section 14.
NO.
103
NAME Milford No. 2 mine, Ingomar mine
COUNTY
Clark
LOCATION NW¼ Sec. 5, T26S, R58E
(unsurveyed).
UTMN 3953750
UTME
635920
DISTRICT Goodsprings
QUAD State Line
Pass 7.5' (1985)
OTHER PRODUCTION 1904-1909: small production,
1909-1926: 5,439 tons ore, 0.19 oz Au, 10,941 oz Ag, 538 lbs Cu, 1,856,209 lbs
Pb, 2,768,606 lbs Zn
DEVELOPMENT Several tunnels totaling over
1,500 feet (for zinc, lead, copper and silver).
RADIOACTIVITY
Background = 10 cps, High = 200 cps.
GEOLOGY Anomalous
radioactivity was noted associated with hydrozincite and limonite at several
locations in the workings. Lead-zinc orebodies occurred along faults in
dolomitized portions of the Mississippian Yellowpine Limestone
Member.
RADIOACTIVE MINERALS Anomalously radioactive
hydrozincite and limonite
HOST ROCK Sedimentary: Mississippian
Yellowpine Limestone Member of Monte Cristo Limestone
MAIN COMMODITIES
Pb, Zn
OTHER COMMODITIES Ag, Cu, U
OLD MAP NO.
98
REFERENCES Barton and Behre, 1954; Longwell and
others, 1965; Hewett, 1931; Smith and others, 1983; Smith and Tingley, 1983;
Mason and others, 1996; Garside, 1973.
NOTES MRDS: M031113,
UTMs from point noted in Smith and others (1983) and Smith and Tingley (1983).
NO. 104
NAME Mohawk No. 7
mine
COUNTY Clark
LOCATION Sec. 4, T24S,
R57E
UTMN 3972740
UTME
627040
DISTRICT Goodsprings
QUAD Potosi 7.5'
(1984)
DEVELOPMENT Prospect pits
RADIOACTIVITY
Background = 10 cps, High = 200 cps.
GEOLOGY Limonite and
oxidized copper minerals occur along a shear zone parallel to bedding in the
Bullion Limestone. Highest radioactivity is associated with goethite surrounded
by halos of malachite and minor chrysocolla.
RADIOACTIVE MINERALS
Anomalously radioactive goethite
HOST ROCK Sedimentary:
Mississippian Bullion Dolomite Member of Monte Cristo Limestone
MAIN
COMMODITIES U(?)
OLD MAP NO. 60
REFERENCES
Barton and Behre, 1954; Smith and others, 1983; Smith and Tingley, 1983;
Garside, 1973
NOTES UTMs from location in Smith and others
(1983) and Smith and Tingley (1983).
NO.
105
NAME Nevada Mica mine
OTHER NAME White
Cloud(?)
COUNTY Clark
LOCATION SW¼ Sec. 18,
T20S, R70E (protracted).
UTMN 4008360
UTME
749820
DISTRICT Gold Butte
QUAD Jumbo Peak
7.5' (1983)
DEVELOPMENT Several small pits and open
cuts.
RADIOACTIVITY Background = 0.03 mR/hr (100 cps), High =
0.1 mR/hr (320 cps). A pegmatite sample contained only 4 ppm
U3O8.
GEOLOGY Slightly anomalous radioactivity occurs along a
10- to 5-foot-wide granite pegmatite dike in Precambrian gneiss and schist.
Muscovite and feldspars are present around a quartz core. Uraninite was reported
as inclusions in zenotime, and a Ce-La mineral (basnasite?) is found locally as
inclusions(?) in zircon.
RADIOACTIVE MINERALS
uraninite
HOST ROCK Intrusive: Granite pegmatite
dike
MAIN COMMODITIES U
OLD MAP NO.
114
REFERENCES AEC Report 3333; Longwell and others, 1965;
Garside, 1973; Johnson and Glynn, 1982, no. 6.
NOTES
NO. 106
NAME Nippeno mine
area
OTHER NAME Neppeno mine area; Nippeno group; Nippeno
mine
COUNTY Clark
LOCATION Secs. 22 and 27,
T28S, R61E
UTMN 3928470
UTME
668180
DISTRICT Crescent
QUAD Crescent Peak
7.5' (1984)
OTHER PRODUCTION 1931-1939: 538 oz Au, 294 oz Ag,
1,955 lbs Cu, 779 lbs Pb
RADIOACTIVITY Background = 20 cps,
High = 50 cps.
GEOLOGY An allanite-like mineral has been
reported from an aplitic dike that cuts Precambrian rocks near the Neppeno mine
northwest of Crescent Peak. Radioactivity reported from this area may be due to
the allanite.
RADIOACTIVE MINERALS Anomalously radioactive
allanite(?)
HOST ROCK Intrusive: Aplitic dike
MAIN
COMMODITIES Au
OTHER COMMODITIES Ag, Cu, Pb,
U
NBMG SAMPLE 1328
OLD MAP NO.
103
REFERENCES Volborth, 1962a, p. 214; Longwell and others,
1965; AEC Report 3319; Smith and others, 1983; Smith and Tingley, 1983; Mason
and others, 1996; Garside, 1973.
NOTES MRDS: M031044
NO. 107
NAME Nunn
prospect
COUNTY Clark
LOCATION Sec. 19, T24S,
R60E
UTMN 3968000
UTME
653500
DISTRICT Sloan
QUAD Jean 7.5 '
(1989)
GEOLOGY Carnotite occurs along bedding and fractures in
a red sandstone of the Permian Supai(?) Formation.
RADIOACTIVE
MINERALS carnotite
HOST ROCK Sedimentary: Permian
Supai(?) Formation
MAIN COMMODITIES U
OLD MAP NO.
49
REFERENCES Finch, 1967; Hewett, 1923; Garside,
1973
NOTES Location uncertain, UTMs from near center of section
19.
NO. 108
NAME
Occurrence (T18S, R70E)
COUNTY Clark
LOCATION
Sec. 35(?), T18S, R70E
UTMN 4023000
UTME
756500
DISTRICT Gold Butte
QUAD Gold Butte
7.5' (1984)
DEVELOPMENT Location pits
RADIOACTIVITY
0.5-1.0 mR/hr. A bove background.
GEOLOGY Anomalous
radioactivity is associated with a white, tuffaceous(?) clay bed in the Tertiary
Horse Spring Formation.
HOST ROCK Sedimentary: Tertiary Horse
Spring Formation
MAIN COMMODITIES U(?)
OLD MAP NO.
19
REFERENCES AEC Report 3343; Garside, 1973
NOTES
Location uncertain, UTMs from near center of Sec. 35.
NO. 109
NAME Occurrence (T24S,
R56E)
OTHER NAME Unnamed prospect
COUNTY
Clark
LOCATION Center NW¼ Sec. 1, T24S, R56E
UTMN
3972800
UTME 622000
DISTRICT
Goodsprings
QUAD Green Monster Mine 7.5'
(1984)
RADIOACTIVITY Background = 10 cps, High = 40
cps.
GEOLOGY Very minor films of carnotite and fluorescent
chalcedony coat fragments of dark gray, clastic limestone of the basal part of
the Bird Spring Formation (Mississippian).
RADIOACTIVE MINERALS
carnotite
HOST ROCK Sedimentary: Mississippian Bird Spring
Formation
MAIN COMMODITIES U
OLD MAP NO.
56
REFERENCES Barton and Behre, 1954; Garside, 1973
NOTES
Location uncertain, UTMs from near center of quarter section.
NO. 110
NAME Occurrence (T24S,
R57E)
COUNTY Clark
LOCATION Center Sec. 1,
T24S, R57E
UTMN 3972500
UTME
632500
DISTRICT Goodsprings
QUAD Potosi 7.5'
(1984)
RADIOACTIVITY Background = 10 cps, High = 50
cps.
GEOLOGY Limonite and oxidized copper minerals are slightly
radioactive. Most of section 1 is underlain by the Mississippian Bird Spring
Formation.
RADIOACTIVE MINERALS Anomalously radioactive copper
minerals and limonite
HOST ROCK Sedimentary: Mississippian Bird
Spring Formation
MAIN COMMODITIES Cu, U(?)
OLD MAP
NO. 62
REFERENCES Barton and Behre, 1954; Garside,
1973; Longwell and others, 1965
NOTES Location uncertain, UTMs
from near center of section 1.
NO.
111
NAME Occurrence (T25S, R58E)
COUNTY
Clark
LOCATION Center S½ Sec. 2, T25S, R58E
UTMN
3962310
UTME 640800
DISTRICT
Goodsprings
QUAD Goodsprings 7.5' (1989)
DEVELOPMENT
Numerous pits
RADIOACTIVITY Background = 30 cps, High =
60 cps.
GEOLOGY Limonite and oxidized copper minerals are
slightly radioactive. The half section is underlain by the Mississippian Monte
Cristo Limestone
RADIOACTIVE MINERALS Anomalously radioactive
copper minerals and limonite
HOST ROCK Sedimentary:
Mississippian Monte Cristo Limestone
MAIN COMMODITIES
Cu
OTHER COMMODITIES U(?)
OLD MAP NO.
86
REFERENCES Barton and Behre, 1954; Garside, 1973
NOTES
UTMs from prospect pit near center of half section.
NO. 112
NAME Oro Amigo
mine
COUNTY Clark
LOCATION E½ Sec. 23, T24S,
R57E
UTMN 3967530
UTME
630640
DISTRICT Goodsprings
QUAD Shenandoah
Peak 7.5' (1985)
OTHER PRODUCTION 1917: One shipment of 18 tons
ore containing 17.17% Cu, 12.2% Fe, 0.15 opt Au, 0.5 opt Ag, 0.11 opt
Pt
DEVELOPMENT Less than 1,000 feet of workings on two
levels.
RADIOACTIVITY Background = 10 cps, High = 60
cps.
GEOLOGY Anomalous radioactivity is associated with
limonite, azurite, and malachite in siliceous lenses in the Sultan
Limestone.
RADIOACTIVE MINERALS Anomalously radioactive
azurite, limonite, and malachite
HOST ROCK Sedimentary:
Devonian Sultan Limestone
MAIN COMMODITIES Cu
OTHER
COMMODITIES Ag, Au, Fe, Pt, U(?)
OLD MAP NO.
63
REFERENCES U.S. Atomic Energy Comm., RME, 3119; Barton and
Behre, 1954; Hewett, 1923; Longwell and others, 1965; Smith and others, 1983;
Smith and Tingley, 1983; Mason and others, 1996; Garside, 1973; Hewett,
1931
NOTES MRDS: M045356
NO.
113
NAME Over prospect
COUNTY
Clark
LOCATION SW¼ Sec. 1, T25S, R58E
UTMN
3962500
UTME 642000
DISTRICT
Goodsprings
QUAD Goodsprings 7.5' (1989)
DEVELOPMENT
Several pits and adits
RADIOACTIVITY Background = 50(?)
cps, High = 110(?) cps.
GEOLOGY Anomalous radioactivity is
probably associated with oxidized copper minerals. Lead and zinc minerals are
also present. The quarter section is underlain by the Devonian Sultan Limestone
and the Mississippian Monte Cristo Limestone
RADIOACTIVE MINERALS
Anomalously radioactive copper minerals and limonite
HOST ROCK
Sedimentary: Devonian Sultan Limestone, Mississippian Monte Cristo
Limestone
MAIN COMMODITIES Cu, Pb, Zn
OTHER
COMMODITIES U(?)
OLD MAP NO. 85
REFERENCES
Barton and Behre, 1954; Longwell and others, 1965; Garside,
1973
NOTES UTMs from center of quarter section.
NO. 114
NAME Paradise
prospect
COUNTY Clark
LOCATION SE¼ Sec. 35,
T23S, R57E
UTMN 3973600
UTME
631080
DISTRICT Goodsprings
QUAD Potosi 7.5'
(1984)
DEVELOPMENT Several small pits and short
tunnels.
RADIOACTIVITY Background = 10 cps, High = 50 cps +. A
one-foot chip sample contained 0.019% cU3O8.
GEOLOGY Oxides of
copper, zinc, and iron occur along fractures in the steeply dipping beds of
dolomitized Monte Cristo Limestone (Mississippian) which are upturned under the
Keystone thrust. Copper minerals, mainly malachite, are slightly radioactive,
but the highest radioactivity is associated with an earthy white material which
is in part hydrozincite. About 2,000 feet to the southeast there are several
similar prospects, two of which have comparable radioactivity associated with
small lenses of ferruginous chert, limonite, and copper
staining.
RADIOACTIVE MINERALS Anomalously radioactive
malachite and other copper minerals and hydrozincite
HOST ROCK
Sedimentary: Mississippian Monte Cristo Limestone
MAIN COMMODITIES
U
OLD MAP NO. 61
REFERENCES AEC Report
3346; Barton and Behre, 1954; Longwell and others, 1965; Smith and others, 1983;
Smith and Tingley, 1983; Garside, 1973
NOTES
NO. 115
NAME Platina
mine
COUNTY Clark
LOCATION NE¼ Sec. 34, T24S,
R57E
UTMN 3965140
UTME
629430
DISTRICT Goodsprings
QUAD Shenandoah
Peak 7.5' (1985)
OTHER PRODUCTION 1916-1918: one car of Cu
ore
DEVELOPMENT 5 adits with several hundred feet of
workings.
RADIOACTIVITY Background = 10 cps, High = 40
cps.
GEOLOGY Lenses of ferruginous chert, coated with malachite
and chrysocolla, parallel the bedding in the Monte Cristo Limestone. Limonite
and chrysocolla are radioactive.
RADIOACTIVE MINERALS
Anomalously radioactive chrysocolla and limonite
HOST ROCK
Sedimentary: Mississippian Monte Cristo Limestone
MAIN COMMODITIES
Cu
OTHER COMMODITIES Pt(?), U(?)
OLD MAP NO.
71
REFERENCES Barton and Behre, 1954; Hewett, 1931;
Longwell and others, 1965; Smith and others, 1983; Smith and Tingley, 1983;
Mason and others, 1996; Garside, 1973
NOTES MRDS: M031124
NO. 116
NAME Potosi
mine
OTHER NAME Potesi mine
COUNTY
Clark
LOCATION Sec. 12, T23S, R57E
UTMN
3980440
UTME 631860
DISTRICT
Goodsprings
QUAD Potosi 7.5' (1984)
OTHER PRODUCTION
1861-1904: intermittent production of less than 1,000 tons of lead ore,
1905-1927: 74,492 tons of ore and some concentrates, 24 oz Au, 40,648 oz Ag,
27,840 lbs. Cu, 3,009,145 lbs Pb, 44, 183,333 lbs Zn
DEVELOPMENT
Several thousand feet of workings on six levels.
RADIOACTIVITY
(Underground): Background = 10 cps, High = 275 cps. Non-radioactive shale
fragments reportedly contain 0.013% cU3O8,
GEOLOGY Anomalous
radioactivity is associated with mineralized areas containing dark brown
sphalerite and white calcite in a breccia of gray dolomite and fragments of
black, carbonaceous shale. Autoradiograph techniques indicate that an
unidentified uranium mineral occurs as irregularly curving subparallel threads
in the shale fragments. The shale is believed to have been derived from the base
of the Bird Springs Formation. The mine produced considerable quantities of
sulfide ore, mainly sphalerite, from orebodies in the Yellowpine Limestone
Member beneath a thrust fault.
RADIOACTIVE MINERALS
unidentified uranium mineral
HOST ROCK Sedimentary:
Mississippian Yellowpine Limestone Member of Monte Cristo Limestone
MAIN
COMMODITIES Pb, Zn
OTHER COMMODITIES Ag, Au, Cu, Pb,
U, Zn,
NBMG SAMPLE 2004
OLD MAP NO.
54
REFERENCES Barton and Behre, 1954; Longwell and others,
1965; Mason and others, 1996; Smith and others, 1983; Smith and Tingley, 1983;
Couch and Carpenter, 1943; Garside, 1973; Hewett, 1931
NOTES
MRDS M242238
NO. 117
NAME
Prospectors Uranium claims (Nos. 1-20)
OTHER NAME Prospector;
Prospectors U claim
COUNTY Clark
LOCATION
Secs. 3, 10, T29S, R61E
UTMN 3923530
UTME
668770
DISTRICT Crescent
QUAD Crescent Peak
7.5' (1984)
DEVELOPMENT Bulldozer
trenches
RADIOACTIVITY Background = 0.01 mR/hr, High = 2.5
mR/hr. One assay reports the following: U3O8 = 0.874%, ThO2 = 0.62%, and rare
earth oxides = 6.81%. Radioactivity up to 100 times background on
dike.
GEOLOGY Radioactivity is associated with a N55ºW dike
cutting granitic rocks. One sample reportedly contained 30% apatite, 20%
monazite, and 5% zircon. 2% allanite was also reported.
RADIOACTIVE
MINERALS monazite, allanite
HOST ROCK Intrusive:
Granitic rocks
MAIN COMMODITIES Rare earths, Th, U
OLD
MAP NO. 106
REFERENCES AEC Report 3328; Longwell and
others, 1965; Smith and others, 1983; Smith and Tingley, 1983; Mason and others,
1996; Garside, 1973; Luning and others, 1982 no. 16.
NOTES
MRDS: M031046
NO. 118
NAME
R. A. H. group (Nos. 1-6)
COUNTY
Clark
LOCATION NE¼ Sec. 8, and SE¼ Sec. 5, T15S,
R67E
UTMN 4059000
UTME
722200
DISTRICT Moapa
QUAD Moapa East 7.5'
(1983)
DEVELOPMENT Prospect pits.
RADIOACTIVITY
Radioactivity: Background = 0.015 mR/hr, High = 0.05 to 0.06
mR/hr
GEOLOGY Anomalous radioactivity is reported in Tertiary
sediments, mainly limestones and conglomerates.
HOST ROCK
Sedimentary: Tertiary limestones and conglomerates
MAIN COMMODITIES
U(?)
OLD MAP NO. 27
REFERENCES AEC
Report 3386; Garside, 1973
NOTES Location uncertain, UTMs from
near center of two quarter sections.
NO.
119
NAME Root Zinc mine
OTHER NAME Root mine;
Bonanza Hill mine; Root Hill; Root Camp; Bonanza Group
COUNTY
Clark
LOCATION NW¼ Sec. 13, T25S, R57E
UTMN
3960100
UTME 631800
DISTRICT
Goodsprings
QUAD Shenandoah Peak 7.5' (1985)
OTHER
PRODUCTION 1893-1926: Bonanza Group: 2,563 tons ore, 0.41 oz Au,
3,347 oz Ag, 131 lbs Cu, 349,820 lbs Pb, 1,432,744 lbs Zn
DEVELOPMENT
Several adits, drifts, and crosscuts.
RADIOACTIVITY
Background = 10 cps, High = 100 cps.
GEOLOGY Anomalous
radioactivity is associated with limonite in a brecciated and dolomitized zone
in the upper part of the Mississippian Yellowpine Limestone Member of the Monte
Cristo Limestone. Hydrozincite, calamine, cerussite, and residual pods of galena
occur in tabular orebodies.
RADIOACTIVE MINERALS Anomalously
radioactive limonite
HOST ROCK Sedimentary: Mississippian
Yellowpine Limestone Member of Monte Cristo Limestone
MAIN COMMODITIES
Pb, Zn
OTHER COMMODITIES Ag, Au, Cu, U(?)
OLD MAP
NO. 97
REFERENCES AEC Reports 3363, 3371; Barton and
Behre, 1954; Longwell and others, 1965; Longwell and others, 1965; Smith and
others, 1983; Smith and Tingley, 1983; Mason and others, 1996; Garside, 1973;
Hewett, 1931.
NOTES MRDS: M031126
NO. 120
NAME Rose
mine
OTHER NAME Black Jack claim
COUNTY
Clark
LOCATION NW¼ Sec. 31, T24S, R58E
UTMN
3964680
UTME 633880
DISTRICT
Goodsprings
QUAD Shenandoah Peak 7.5' (1985)
OTHER
PRODUCTION 1918: one car shipped containing 9.84 tons ore containing
0.01 opt Au, 1 opt Ag, 14.54% Cu, 13% Fe
DEVELOPMENT A 110-foot
adit and a 85-foot inclined shaft.
RADIOACTIVITY Background =
10 cps, High = 25 cps.
GEOLOGY Oxidized copper minerals occur
around lenses of ferruginous chert in a shear zone in the Goodsprings Dolomite.
The slight radioactivity is associated with limonite.
RADIOACTIVE
MINERALS Anomalously radioactive limonite
HOST ROCK
Sedimentary: Cambrian-Devonian Goodsprings Dolomite
MAIN COMMODITIES
Cu
OTHER COMMODITIES Ag, Au, Co, Fe, Pb, U(?)
OLD
MAP NO. 82
REFERENCES Barton and Behre, 1954;
Hewett, 1923, 1931; Smith and others, 1983; Smith and Tingley, 1983; Mason and
others, 1996; Garside, 1973
NOTES MRDS: M031127
NO. 121
NAME Rosetta No.1 and 2
claims
OTHER NAME Rosetta claims
COUNTY
Clark
LOCATION S½ Sec. 26, T24S, R57E
UTMN
3965530
UTME 630100
DISTRICT
Goodsprings
QUAD Shenandoah Peak 7.5'
(1985)
DEVELOPMENT Several pits and a short
drift.
RADIOACTIVITY Background = 10 cps, High = 250
cps.
GEOLOGY Anomalous radioactivity is associated with
irregular lenses of siliceous limonite surrounded by halos of chrysocolla (with
minor malachite) up to 3 inches thick. Stainierite is present as irregularly
distributed specks on fractures. Limonite without copper minerals is also
locally radioactive. The south half of the section is mostly underlain by
Goodsprings Dolomite and Monte Cristo Limestone.
RADIOACTIVE MINERALS
Anomalously radioactive limonite
HOST ROCK Sedimentary:
Cambrian-Devonian Goodsprings Dolomite, Mississippian Monte Cristo
Limestone
MAIN COMMODITIES Cu, U(?)
OLD MAP NO.
66
REFERENCES Barton and Behre, 1954; Longwell and
others, 1965; Smith and others, 1983; Smith and Tingley, 1983; Garside,
1973
NOTES
NO.
122
NAME Royal Blue prospect
COUNTY
Clark
LOCATION NW¼ SW¼ Sec. 32, T24S, R58E
UTMN
3964700
UTME 635600
DISTRICT
Goodsprings
QUAD Goodsprings 7.5' (1989)
DEVELOPMENT
Prospect pit.
RADIOACTIVITY Background = 10 cps, High =
35 cps.
GEOLOGY Anomalous radioactivity is associated with
limonite and oxidized copper minerals in a copper prospect. Most of the
quarter-quarter section is underlain by the Cambrian-Devonian Goodsprings
Dolomite
RADIOACTIVE MINERALS Anomalously radioactive copper
minerals and limonite
HOST ROCK Sedimentary: Cambrian-Devonian
Goodsprings Dolomite
MAIN COMMODITIES Cu
OTHER
COMMODITIES U(?)
OLD MAP NO. 84
REFERENCES
Barton and Behre, 1954; Longwell and others, 1965.
NOTES
UTMs from center of quarter-quarter section.
NO.
123
NAME Sampson and Sampson No.1 claims
OTHER
NAME Sampson claims
COUNTY Clark
LOCATION
SE¼ NE¼ Sec. 24, T18S, R61E
UTMN 4026880
UTME
670600
DISTRICT Gass Peak
QUAD Valley
7.5' (1974)
DEVELOPMENT A 15-foot vertical shaft and a 75-foot
inclined shaft having several drifts and winzes (for precious
metals).
RADIOACTIVITY Background = 0.01 mR/hr, High = 0.3
mR/hr. A select sample contained 0.068% cU3O8. NBMG sample 2147 assayed 471 ppm
U.
GEOLOGY Anomalous radioactivity occurs in a 15-foot-deep
shaft along a N60ºW brecciated zone in dolomite of the Monte Cristo Limestone.
Higher readings are associated with pods of malachite, chrysocolla, and iron
oxides. An inclined shaft to the northwest contains hydrozincite and
hemimorphite in narrow seams in the brecciated dolomite. Small amounts of silver
and gold were noted in some assays.
RADIOACTIVE MINERALS
Anomalously radioactive chrysocolla, iron oxide, and malachite
HOST
ROCK Sedimentary: Mississippian Monte Cristo Limestone
MAIN
COMMODITIES Ag, Au
OTHER COMMODITIES Cu, U,
Zn
NBMG SAMPLE 2147
OLD MAP NO.
109
REFERENCES AEC Reports 3315, 3315a; Longwell and others,
1965; Mason and others, 1996; Garside, 1973.
NOTES MRDS:
M031026
NO. 124
NAME
Shenandoah mine
COUNTY Clark
LOCATION NW¼ NE¼
Sec. 35, T24S, R57E
UTMN 3964950
UTME
631160
DISTRICT Goodsprings
QUAD Shenandoah
Peak 7.5' (1985)
OTHER PRODUCTION 1908-1926: 1,143 tons ore,
2,120 oz Ag, 208,580 lbs Pb, 538,557 lbs Zn
DEVELOPMENT 1 adit
with several hundred feet of workings.
RADIOACTIVITY Background
= 10 cps, High = 50 cps.
GEOLOGY Anomalous radioactivity is
reported from limonite. Mineralization is in the Monte Cristo
Limestone.
RADIOACTIVE MINERALS Anomalously radioactive
limonite
HOST ROCK Sedimentary: Mississippian Monte Cristo
Limestone
MAIN COMMODITIES Pb, Zn
OTHER COMMODITIES
Ag, Au, Cu, Mo, U(?)
OLD MAP NO. 72
REFERENCES
Barton and Behre, 1954; Longwell and others, 1965; Smith and others,
1983; Smith and Tingley, 1983; Mason and others, 1996; Garside, 1973; Hewett,
1931
NOTES MRDS: M030071
NO.
125
NAME Sieber claim
OTHER NAME
Locality 21
COUNTY Clark
LOCATION NE¼ SE¼ Sec.
24, T24S, R59E
UTMN 3968200
UTME
652980
DISTRICT Sloan
QUAD Jean 7.5 '
(1989)
DEVELOPMENT A 12-foot-deep shaft
RADIOACTIVITY
Background = 15 cps, High = 45 cps.
GEOLOGY Carnotite,
manganese oxides, gypsum, and calcite are found as specks and thin films along
joints and fractures. The minerals occur on surface exposures of a sandstone bed
in the upper part of the Permian Supai(?) Formation.
RADIOACTIVE
MINERALS carnotite
HOST ROCK Sedimentary: Permian
Supai(?) Formation
MAIN COMMODITIES U
OLD MAP NO.
51
REFERENCES Hewett, 1923; Barton and Berne, 1954;
Garside, 1973
NOTES
NO.
126
NAME Singer mine
OTHER NAME Singer-Tiffin
mine
COUNTY Clark
LOCATION NW¼ Sec. 18, T25S,
R58E, two mines about 300 feet apart.
UTMN
3959920
UTME 633240
DISTRICT
Goodsprings
QUAD Shenandoah Peak 7.5' (1985)
OTHER
PRODUCTION 1913-1920: 1,192 tons ore, 0.3 oz Au, 1,352 oz Ag, 481 lbs
Cu, 304,200 lbs Pb, 480,384 lbs Zn
DEVELOPMENT About 800 feet
of drifts and a 240-foot-deep inclined shaft. All workings are for copper, lead,
zinc, silver, and gold.
RADIOACTIVITY (Underground): Background
= 10-20 cps, High = 400-500 cps. Select samples contain up to 0.148%
U.
GEOLOGY Ore occurred in a breccia zone in dolomitized
limestones of the Mississippian Anchor limestone and Bullion Dolomite. Breccia,
parallel to bedding, contained galena, oxidized lead minerals, hydrozincite, and
calamine. Kasolite(?) and a green uranium mineral were found as coatings on
joint surfaces and bedding planes in the Singer mine. Elsewhere in both the
Singer and Tiffin mines, anomalous radioactivity is associated with limonite,
oxidized copper minerals, and hydrozincite. Carnotite occurs as yellowish-green
coatings with limonite, hydrozincite, galena, and oxidized copper. lead, and
zinc minerals.
RADIOACTIVE MINERALS Anomalously radioactive
copper minerals, hydrozincite, and limonite; carnotite; kasolite(?);
unidentified green uranium mineral
HOST ROCK Sedimentary:
Mississippian Anchor Limestone and Bullion Dolomite Members of Monte Cristo
Limestone
MAIN COMMODITIES Ag, Cu, Pb, Zn
OTHER
COMMODITIES Au, U
OLD MAP NO.
94
REFERENCES AEC Reports 3370, 3374; Barton and Behre, 1954;
Lovering, 1954; Longwell and others, 1965; Smith and others, 1983; Smith and
Tingley, 1983; Mason and others, 1996; Hewett, 1931; Garside, 1973; Castor and
Ferdock, 2004; Luning and others, 1982, no. 8.
NOTES MRDS:
M242235
NO. 127
NAME
Sloan mining district
OTHER NAME Carnotite
deposit.
COUNTY Clark
LOCATION SW¼ Sec. 24,
T23S, R60E, in a railroad cut 1.25 miles south of Sloan.
UTMN
3977600
UTME 660160
DISTRICT
Sloan
QUAD Sloan 7.5' (1989)
GEOLOGY
Carnotite, associated with calcite and manganese oxide, occurs as fracture
coatings in the Erie Tuff.
RADIOACTIVE MINERALS
carnotite
HOST ROCK Volcanic: Erie Tuff
MAIN
COMMODITIES U
OLD MAP NO. 38
REFERENCES
AEC Report 3385; Lovering, 1954; Vanderburg, 1937; McKelvey, 1957;
Garside, 1973; Castor and Ferdock, 2004.
NOTES
NO. 128
NAME Smithsonite
mine
OTHER NAME Polly Pry claim; Crown claim
COUNTY
Clark
LOCATION SE¼ Sec. 26, T24S, R57E
UTMN
3965100
UTME 630920
DISTRICT
Goodsprings
QUAD Shenandoah Peak 7.5' (1985)
OTHER
PRODUCTION 1915-1916: 427 tons ore, 14,700 lbs Cu, 81,870 lbs, 80,866
lbs Zn
DEVELOPMENT Several adits
RADIOACTIVITY
Background = 10 cps, High = 30 cps.
GEOLOGY Slight
radioactivity is probably associated with limonite, which is more abundant here
than in other lead-zinc mines in the Goodsprings district. The lead-zinc ore is
in the Bullion Dolomite Member of the Monte Cristo Limestone
RADIOACTIVE
MINERALS Anomalously radioactive limonite(?)
HOST ROCK
Sedimentary: Mississippian Bullion Dolomite Member of Monte Cristo
Limestone
MAIN COMMODITIES Pb, Zn
OTHER COMMODITIES
Cu, Mo, U(?)
OLD MAP NO. 65
REFERENCES
Barton and Behre, 1954; Longwell and others, 1965, p. 196; Smith and others,
1983; Smith and Tingley, 1983; Mason and others, 1996; Garside, 1973; Hewett,
1931
NOTES MRDS: M030072
NO.
129
NAME South Valley No. 2 claim
COUNTY
Clark
LOCATION Sec. 30, T18S, R71E (unsurveyed).
Projected from the west
UTMN 4025500
UTME
760000
DISTRICT Gold Butte
QUAD Azure Ridge
7.5' (1983)
U PRODUCTION 1950s(?): One shipment of 13 tons
containing 0.01% U3O8
DEVELOPMENT A shipment of 13 tons is
reported, but the grade was only 0.01% U3O8.
RADIOACTIVITY High
= 0.6 mR/hr
GEOLOGY Tyuyamunite occurs as disseminated streaks
and as fracture coatings in red- and white-mottled, limy, tuffaceous and arkosic
sediments of the Tertiary Horse Spring Formation.
RADIOACTIVE MINERALS
tyuyamunite
HOST ROCK Sedimentary: Tertiary Horse Spring
Formation
MAIN COMMODITIES U
OLD MAP NO.
17
REFERENCES AEC Report 3314; Garside, 1973
NOTES
Location uncertain, UTMs from near center of Sec. 30.
NO. 130
NAME South Valley No.4
claim
COUNTY Clark
LOCATION Sec. 16(?), T15S,
R70E
UTMN 4057500
UTME
754300
DISTRICT Bunkerville
QUAD Riverside
7.5' (1983)
RADIOACTIVITY Background = 40 cps, High = 400 cps.
Grab samples contain up to 0.04% eU3O8.
GEOLOGY Anomalous
radioactivity occurs near the contact of a mica schist and a sandy shale in
Precambrian metamorphic rocks.
HOST ROCK
Metamorphic/Sedimentary: Precambrian mica schist and sandy shale
MAIN
COMMODITIES U
OLD MAP NO. 108
REFERENCES
AEC Report 3326; Garside, 1973.
NOTES Exact location
uncertain, UTMs from near center of section 16.
NO. 131
NAME Spelter
mine
COUNTY Clark
LOCATION NW¼ 11, T25S,
R57E
UTMN 3961660
UTME
630060
DISTRICT Goodsprings
QUAD Shenandoah
Peak 7.5' (1985)
DEVELOPMENT Several
adits
RADIOACTIVITY Background = 10 cps, High = 90
cps.
GEOLOGY Shear zone parallel to bedding in Bullion Dolomite
Member containing cuprodescloizite and galena. Hydrozincite is reportedly
radioactive.
RADIOACTIVE MINERALS Anomalously radioactive
hydrozincite
HOST ROCK Sedimentary: Mississippian Bullion
Dolomite Member of Monte Cristo Limestone
MAIN COMMODITIES
Pb
OTHER COMMODITIES U(?), V
OLD MAP NO.
95
REFERENCES Barton and Behre, 1954; Longwell and others,
1965; Smith and others, 1983; Smith and Tingley, 1983; Garside, 1973; Hewett,
1931.
NOTES
NO.
132
NAME Sultan mine
COUNTY
Clark
LOCATION SE¼ Sec. 20, T25S, R58E
UTMN
3957280
UTME 635680
DISTRICT
Goodsprings
QUAD Goodsprings 7.5' (1989)
OTHER
PRODUCTION 1910-1926: 6,199 tons ore, 0.41 oz Au, 49,913 oz Ag, 67
lbs Cu, 1,417,877 lbs Pb, 1,401,248 lbs Zn
DEVELOPMENT Workings
over a vertical range of 300 feet that explore a horizontal area of 200 by 700
feet.
RADIOACTIVITY Background = 10 cps, High = 50
cps.
GEOLOGY Slightly anomalous radioactivity is associated
with limonite, hydrozincite, and copper oxides. Orebodies of hydrozincite,
cerussite, calamine, and galena occur in brecciated Mississippian dolomite along
the Sultan thrust, and in tabular bodies along high-angle faults which cut the
breccia zone.
RADIOACTIVE MINERALS Anomalously radioactive
copper minerals, and hydrozincite, and limonite
HOST ROCK
Sedimentary: Devonian Sultan Limestone
MAIN COMMODITIES Ag, Pb,
Zn
OTHER COMMODITIES Au, Cu, U(?)
OLD MAP NO.
92
REFERENCES Barton and Behre, 1954; Longwell and others,
1965; Hewett, 1931; Smith and others, 1983; Smith and Tingley, 1983; Mason and
others, 1996; Garside, 1973
NOTES MRDS: M242234
NO. 133
NAME Superfluous No.1
claim
OTHER NAME Superfluous claims
COUNTY
Clark
LOCATION S½ Sec. 3, T32S, R64E
UTMN
3895330
UTME 697550
DISTRICT
Newberry
QUAD Juniper Mine 7.5' (1984)
DEVELOPMENT
Several pits
RADIOACTIVITY Background = 0.06 mR/hr, High
= 1.8 mR/hr. A select sample contained 0.25% ThO2.
GEOLOGY
Anomalous radioactivity occurs near the contact of Precambrian metasedimentary
rocks and a granitic intrusive. Epidote and iron oxides are also
present.
HOST ROCK Metamorphic/Intrusive: Precambrian
metasedimentary and granitic intrusive rocks.
MAIN COMMODITIES
U(?)
NBMG SAMPLE 1334
OLD MAP NO.
121
REFERENCES AEC Report 3318; Olson and Adams, 1962; Staatz,
1964; Smith and others, 1983; Smith and Tingley, 1983; Garside,
1973.
NOTES UTMs are at a prospect symbol in SE¼, Sec. 3,
Sample 1334 is from a shaft in the NW¼, NW¼, Sec. 10
NO. 134
NAME Surprise
group
COUNTY Clark
LOCATION Sec. 29(?), T28S,
R61E
UTMN 3927500
UTME
665500
DISTRICT Crescent
QUAD Crescent Peak
7.5' (1984)
RADIOACTIVITY Background = 25 cpm, High = 100
cpm.
GEOLOGY An area of Precambrian gneiss with granitic dikes
has a slightly anomalous radioactivity. Quartz veins, and iron and manganese
oxides were noted. Nearby mines have base-metal quartz veins present.
HOST
ROCK Metamorphic: Precambrian gneiss
MAIN COMMODITIES
U(?)
OLD MAP NO. 104
REFERENCES AEC
Rept: 3357; Garside, 1973.
NOTES Exact location uncertain, UTMs
from near center of section 29.
NO.
135
NAME Tam O'Shanter mine
COUNTY
Clark
LOCATION Sec. 9(?), T26S, R58E
(unsurveyed).
UTMN 3952700
UTME
637230
DISTRICT Goodsprings
QUAD State Line
Pass 7.5' (1985)
OTHER PRODUCTION 1908-1928: 673 tons ore,
7,448 oz Ag, 605 lbs Cu, 288,761 lbs Pb, 130,517 lbs Zn
DEVELOPMENT
Several hundred feet of drift on a single level, an inclined winze about
200 feet deep, and a stope to the surface above the drift (for lead and
zinc).
RADIOACTIVITY (Surface): Background = 10 cps.
(underground): Background = 40 cps, High = 225 cps.
GEOLOGY
Anomalous radioactivity is associated with copper oxides and to a lesser amount
with limonite. Ore occurred in a breccia zone parallel to bedding near the base
of the Mississippian Bird Spring Formation. Cerussite, plumbojarosite,
smithsonite, pyromorphite, aurichalcite, and calamine were
present.
RADIOACTIVE MINERALS Anomalously radioactive copper
minerals and limonite
HOST ROCK Sedimentary: Mississippian Bird
Spring Formation
MAIN COMMODITIES Pb
OTHER
COMMODITIES Ag, Au, U(?), Zn
OLD MAP NO.
99
REFERENCES Barton and Behre, 1954; Longwell and others,
1965; Hewett, 1931; Smith and others, 1983; Smith and Tingley, 1983; Mason and
others, 1996; Garside, 1973.
NOTES MRDS: M031135, UTMs from
point noted in Smith and others (1983) and Smith and Tingley (1983).
NO. 136
NAME Thor
claims
OTHER NAME Thorium prospect
COUNTY
Clark
LOCATION Sec. 32, T28S, R61E
UTMN
3926000
UTME 665500
DISTRICT
Crescent
QUAD Crescent Peak 7.5' (1984)
RADIOACTIVITY
The altered area is strongly radioactive.
GEOLOGY A
small body of Tertiary or Cretaceous quartz monzonite intrudes Precambrian
rocks. The quartz monzonite is altered to a monazite-apatite rock in a vertical
pipe 75 feet in diameter. The central 25- to 30-foot portion of this pipe is
brick red and contains 30% monazite and 60% apatite. Bastnaesite(?) may also be
present.
RADIOACTIVE MINERALS monazite
HOST ROCK
Intrusive: Tertiary or Cretaceous quartz monzonite
MAIN
COMMODITIES Th, U
OLD MAP NO.
105
REFERENCES Longwell and others, 1965, p. 180; Olson and
Adams, 1962, p. 8; Smith and others, 1983; Smith and Tingley, 1983; Mason and
others, 1996; Garside, 1973.
NOTES MRDS: M031049, Smith and
others (1983), Smith and Tingley (1983), and MRDS place Thorium prospect in Sec.
10, T15 N, R17 E on California side of border. Exact location uncertain, UTMs
from near center of Sec. 32.
NO.
137
NAME Tiffin mine
OTHER NAME Singer-Tiffin
mine
COUNTY Clark
LOCATION NW¼ Sec. 18, T25S,
R58E;+E163 two mines About 300 feet apart.
UTMN
3960140
UTME 633320
DISTRICT
Goodsprings
QUAD Shenandoah Peak 7.5' (1985)
OTHER
PRODUCTION 1912-1926: 338 tons ore, 702 oz Ag, 101,240 lbs Pb,
171,934 lbs Zn
DEVELOPMENT Many hundreds of feet of irregular
drifts. All workings are for copper, lead, zinc, silver, and
gold.
RADIOACTIVITY (Underground): Background = 10-20 cps, High
= 400-500 cps. Select samples contain up to 0.06% U3O8
GEOLOGY
Ore occurred in a breccia zone in dolomitized limestones of the Mississippian
Anchor limestone and Bullion Dolomite. Breccia, parallel to bedding, contained
galena, oxidized lead minerals, hydrozincite, and calamine. Kasolite(?) and a
green uranium mineral were found as coatings on joint surfaces and bedding
planes in the Singer mine. Elsewhere in both the Singer and Tiffin mines,
anomalous radioactivity is associated with limonite, oxidized copper minerals,
and hydrozincite. Yellow to yellowish-green carnotite is found sparingly along
two post-mineral faults in the Tiffin mine.
RADIOACTIVE MINERALS
Anomalously radioactive copper minerals, hydrozincite, and limonite;
carnotite; kasolite(?); unidentified green uranium mineral
HOST ROCK
Sedimentary: Mississippian Anchor Limestone and Bullion Dolomite Members
of Monte Cristo Limestone
MAIN COMMODITIES Pb, Zn
OTHER
COMMODITIES Cu, U
OLD MAP NO.
94
REFERENCES AEC Reports 3370, 3374; Barton and Behre, 1954;
Lovering, 1954; Longwell and others, 1965; Smith and others, 1983; Smith and
Tingley, 1983; Mason and others, 1996; Hewett, 1931; Garside, 1973.
NOTES
MRDS: M242233
NO.
138
NAME Uranium No.1 and Old Dad prospects
COUNTY
Clark
LOCATION Sec. 32, T18S, R70E
UTMN
4023450
UTME 751560
DISTRICT Gold
Butte
QUAD Gold Butte 7.5' (1984)
DEVELOPMENT
Three prospect pits and several drill holes.
RADIOACTIVITY
Select samples contain as much as 0.48% eU3O8 (0.035% cU3O8).
GEOLOGY
Monazite and abnormally radioactive magnetite are present in
feldspar-quartz-biotite pegmatite-like bodies that cut a Precambrian gneiss.
Beryl(?), azurite, and malachite are also reported. Traces of thorium and
uranium have been found in drill holes.
RADIOACTIVE MINERALS
Abnormally radioactive magnetite; monazite
HOST ROCK Intrusive:
pegmatite-like bodies
MAIN COMMODITIES Th, U
OTHER
COMMODITIES Be(?), Cu
OLD MAP NO.
23
REFERENCES AEC Report 3373; Lovering, 1954, p. 80; Longwell
and others, 1965, p. 185; Olson and Adams, 1962; Overstreet, 1967, p. 172; Smith
and Tingley, 1983; Smith and others, 1983; Garside, 1973
NOTES
UTMs from location in Smith and others (1983) and Smith and Tingley (1983).
NO. 139
NAME Valley of
Fire State Park
COUNTY Clark
LOCATION T17S,
R67E
UTMN 4033080
UTME 722280
QUAD
Valley of Fire West 7.5' (1984)
GEOLOGY Some of the
petrified logs in the Shinarump Member of the Chinle are radioactive. Uranium
minerals may possibly be present.
RADIOACTIVE MINERALS
Abnormally radioactive petrified wood; uranium minerals(?)
HOST ROCK
Sedimentary: Triassic Shinarump Member of the Chinle Formation
MAIN
COMMODITIES U(?)
OLD MAP NO. 32
REFERENCES
Barrett and Mallory, 1955; Longwell, 1928; Bohannon, 1977, 1992; Garside,
1973
NOTES Location uncertain, UTMs from outcrops of Shinarump
Member in the Valley of Fire.
NO.
140
NAME Weiser anticline occurrences
COUNTY
Clark
LOCATION T15 and 16S, R66E, southwest from Glendale along
Weiser Ridge
UTMN 4049100
UTME
718230
DISTRICT Moapa
QUAD Weiser Ridge 7.5'
(1983)
DEVELOPMENT Unknown
RADIOACTIVITY High
background
GEOLOGY Along the west side of Weiser anticline,
carbonaceous trash beds of the Shinarump Member of the Chinle Formation have an
unusually high background of radioactivity which is reportedly due to
disseminated uranium. No uranium minerals have been
recognized.
RADIOACTIVE MINERALS disseminated
uranium
HOST ROCK Sedimentary: Triassic Shinarump Member of the
Chinle Formation
MAIN COMMODITIES U
OLD MAP NO.
28
REFERENCES Barrett and Mallory, 1955; Longwell, 1928;
Bohannon, 1992; Garside, 1973
NOTES UTMs from approximate
center of Shinarump Member bed along Weiser Ridge.
NO. 141
NAME Willabelle
claim
OTHER NAME Locality 19; “Sutor area”
COUNTY
Clark
LOCATION NE¼ Sec. 30, T24S, R60E
UTMN
3966800
UTME 654300
DISTRICT
Sutor
QUAD Jean 7.5 ' (1989)
RADIOACTIVITY
Less than 3 times background.
GEOLOGY Carnotite and manganese
oxide occur along bedding planes in a red sandstone of the Permian Supai(?)
Formation.
RADIOACTIVE MINERALS carnotite
HOST ROCK
Sedimentary: Permian Supai(?) Formation
MAIN COMMODITIES
U
OLD MAP NO. 48
REFERENCES Hewett, 1923;
Barton and Berne, 1954; Lovering, 1954; Vanderburg, 1937; Garside,
1973
NOTES
NO.
142
NAME Winona group
OTHER NAME
MFQ-528
COUNTY Clark
LOCATION W½ Sec. 10,
T20S, R70E (protracted)
UTMN 4010635
UTME
754574
DISTRICT Gold Butte
QUAD Jumbo Peak
7.5' (1983)
DEVELOPMENT A 200 foot adit along quartz
vein.
RADIOACTIVITY A sample contained 100 ppm Th and 20 ppm
U3O8.
GEOLOGY A radioactive pegmatite cuts Gold Butte Granite
near its margin. The pegmatite is at the site of a quartz vein on the Winona
group, which was explored by a 200 ft adit (Longwell and others,
1965).
HOST ROCK Intrusive: granitic pegmatite dike
MAIN
COMMODITIES U, Th
OTHER COMMODITIES
Au(?)
REFERENCES Dexter and others, 1983.
NOTES
NO. 143
NAME
Yellow Jacket group (Nos. 1-15)
COUNTY Clark
LOCATION
Sec. 7(?), T26S, R60E
UTMN 3952000
UTME
654000
QUAD Roach 7.5' (1985)
DEVELOPMENT
Several trenches
RADIOACTIVITY Background = 0.03 mR/hr, Average
= 0.08 mR/hr, High = 0.18 mR/hr. Samples reportedly range from 0.07 to 0.125%
eU3O8.
GEOLOGY A 20-foot-wide shear zone cuts Precambrian
rocks, especially a very coarsely crystalline red granite. The zone trends N80ºW
and dips 80ºS. Autunite is sparsely disseminated throughout the shear zone.
Meta-autunite is also reportedly present.
RADIOACTIVE MINERALS
Autunite; meta-autunite
HOST ROCK Intrusive: Precambrian red
granite
MAIN COMMODITIES U
OLD MAP NO.
119
REFERENCES AEC Report 3387; Garside, 1973; Castor and
Ferdock, 2004.
NOTES Exact location uncertain, UTMs from near
center of Sec. 7.
NO. 144
NAME
Yellow Pine mine
OTHER NAME Prairie Flower; Rover; Hilo;
Bybee; Radio; Como; Hermes; Yellow Pine Lead Zinc mine
COUNTY
Clark
LOCATION NW¼ Sec. 20, T24S, R58E
UTMN
3968180
UTME 635860
DISTRICT
Goodsprings
QUAD Goodsprings 7.5' (1989)
OTHER
PRODUCTION 1906-1928: 201,922 tons ore, 58 oz Au, 1,423,813 oz Ag,
73,189 lbs Cu, 53,043,618 lbs Pb, 99,554,340 lbs Zn
DEVELOPMENT
Extensive underground workings.
RADIOACTIVITY Background = 10
cps, High = 200 cps. Selected radioactive samples contain 0.01% and 0.02%
eU3O8.
GEOLOGY Radioactivity is closely associated with
oxidized copper minerals, although hydrozincite is also radioactive. Maximum
radioactivity was noted in a prospect pit southeast of the main workings. The
radioactive material is porous, massive, siliceous limonite with small amounts
of malachite and chrysocolla. Nickel (annabergite) is reported from the ore bins
of this mine (Hewett, 1931).
RADIOACTIVE MINERALS Anomalously
radioactive malachite, chrysocolla, and hydrozincite
HOST ROCK
Sedimentary: Mississippian Yellowpine Limestone Member of Monte Cristo
Limestone
MAIN COMMODITIES Ag, Cu, Pb, Zn
OTHER
COMMODITIES Ag, Hg, U(?)
NBMG SAMPLE 1163
OLD
MAP NO. 76
REFERENCES Barton and Behre, 1954;
Longwell and others, 1965, p. 109; 110: Hewett, 1931; Smith and others, 1983;
Smith and Tingley, 1983; Mason and others, 1996; Garside, 1973
NOTES
MRDS: M242230
NO.
145
NAME Yellow Queen prospect
COUNTY
Clark
LOCATION W½(?) Sec. 12, T19S, R69E
UTMN
4020000
UTME 748000
DISTRICT Gold
Butte
QUAD Gold Butte 7.5' (1984)
DEVELOPMENT
Bulldozer cuts
RADIOACTIVITY About five times background (0.2
mR/hr).
GEOLOGY Tyuyamunite(?) occurs as scattered smears on
fracture surfaces in the Tertiary Horse Spring Formation. Rocks exposed include
calcareous green and white clays, red and white tuffaceous sediments, and red
sandstone.
RADIOACTIVE MINERALS tyuyamunite(?)
HOST
ROCK Sedimentary: Tertiary Horse Spring Formation
MAIN
COMMODITIES U
OLD MAP NO. 24
REFERENCES
AEC Report 3388; Garside, 1973
NOTES Location uncertain,
UTMs from near center of W½, Sec. 12.
NO.
146
NAME Granite group (Nos. 1-5)
COUNTY
Douglas
LOCATION Center Sec. 20, T13N, R19E
UTMN
4317800
UTME 251500
DISTRICT
Genoa
QUAD Minden 7.5' (1982)
DEVELOPMENT
Prospect pits
RADIOACTIVITY Background = 0.04 mR/hr, High =
0.15 mR/hr
GEOLOGY Anomalous radioactivity is associated with a
pegmatite dike which cuts granitic rocks. Chrysocolla is reportedly
present.
HOST ROCK Intrusive: Pegmatite dike
MAIN
COMMODITIES Cu
OTHER COMMODITIES U
OLD MAP
NO. 123
REFERENCES AEC Report 3397; Mason and
others, 1996; Garside, 1973.
NOTES MRDS: M035959, Exact
location uncertain, UTMs from near center of Sec. 20.
NO. 147
NAME Hi-Boy
claims
COUNTY Douglas
LOCATION Secs. 9(?) and
16(?), T9N, R23E
UTMN 4280500
UTME
290000
DISTRICT Risue Canyon
QUAD Long Dry
Canyon 7.5' (1988)
DEVELOPMENT Several small pits and
trenches.
RADIOACTIVITY Background = 0.009 mR/hr, High=0.15
mR/hr. One sample contained 0.07% eU3O8.
GEOLOGY Radioactivity
is associated with small, low-angle, iron-stained faults in Tertiary
lakebeds.
RADIOACTIVE MINERALS Anomalously radioactive iron
oxide(?)
HOST ROCK Sedimentary: Tertiary lakebeds.
MAIN
COMMODITIES U
OLD MAP NO. 129
REFERENCES
AEC Report 3394; Mason and others, 1996; Garside, 1973.
NOTES
MRDS: M035943, Exact location uncertain, UTMs from near center of two
sections.
NO. 148
NAME
Hunch and Lucky Strike claims
COUNTY Douglas
LOCATION
NW¼(?), Sec. 33, T13N, R19E
UTMN 4315000
UTME
252500
QUAD Minden 7.5' (1982)
DEVELOPMENT
Several small prospect pits.
RADIOACTIVITY Background =
0.03 mR/hr, High = 0.05 mR/hr
GEOLOGY Slightly anomalous
radioactivity is associated with thorium-bearing allanite in pegmatite dikes
which cut a quartz-rich, biotite granite.
RADIOACTIVE MINERALS
Thorium-bearing allanite
HOST ROCK Intrusive: Pegmatite
dike
MAIN COMMODITIES Th, U
OLD MAP NO.
124
REFERENCES AEC Report 3392; Mason and others, 1996;
Garside, 1973.
NOTES MRDS: M035959, Exact location uncertain,
UTMs from near center of the quarter section.
NO.
149
NAME Julietta prospect
COUNTY
Douglas
LOCATION SE¼ Sec. 20, T14N, R21E
UTMN
4326780
UTME 271200
DISTRICT
Delaware
QUAD McTarnanhan Hill 7.5'
(1994)
DEVELOPMENT Shallow pits and
cuts.
RADIOACTIVITY Background = 0.016 mR/hr, High = 0.60
mR/hr
GEOLOGY Anomalous radioactivity, autunite, meta-autunite,
opal(?), and iron and manganese oxides are found m a breccia zone in granitic
rock.
RADIOACTIVE MINERALS Autunite; meta-autunite
HOST
ROCK Intrusive: Cretaceous(?) granitic rocks.
MAIN
COMMODITIES U
OLD MAP NO. 126
REFERENCES
AEC Report 3395; Tingley, 1990; Quade and others, 1990a,b; Mason and
others, 1996; Garside, 1973; Castor and Ferdock, 2004.
NOTES
MRDS: M231042
NO. 150
NAME
Kingsbury Queen prospect
COUNTY
Douglas
LOCATION SW¼ Sec. 20, T13N, R19E, along Nevada Highway
19.
UTMN 4317750
UTME
250750
DISTRICT Genoa
QUAD Minden 7.5' (1982),
South Lake Tahoe 7.5' (1982)
DEVELOPMENT One bulldozer
trench.
RADIOACTIVITY Background 0.01 mR/hr, High = 0.20
mR/hr
GEOLOGY Anomalous radioactivity is associated with smoky
quartz and slightly altered pink orthoclase in a 15-foot-wide, north-trending,
quartz-rich pegmatite dike which cuts granitic rocks. Radioactivity occurs in
small lenticular patches. Clear quartz is not radioactive. Also reported are
torbernite, and an unidentified yellow mineral. Acmite (aegirine) crystals are
also said to be radioactive. No uranium minerals were recognized in 1969.
Allanite is reported from a nearby prospect (Hunch and Lucky Strike claims) and
may have been mistaken for aegirine here.
RADIOACTIVE MINERALS
Anomalously radioactive aegirine(?); torbernite; unidentified yellow
mineral
HOST ROCK Intrusive: Pegmatite dike
MAIN
COMMODITIES U
OLD MAP NO. 122
REFERENCES
AEC Reports 3393, 3399; Mason and others, 1996; Garside,
1973.
NOTES MRDS: M035958, UTMs from MRDS
NO. 151
NAME Lower Zephyr
marsh
COUNTY Douglas
LOCATION Sec. 10, T13N,
R18E
UTMN 4321560
UTME 245000
QUAD
Glenbrook 7.5' (1982)
U RESOURCES/ RESERVES 1985: 24,000
kg contained U from sediment averaging 800 ppm.
DEVELOPMENT
Series of auger holes generally less than 2 m deep.
RADIOACTIVITY
Samples assayed: 82 to 2,000 ppm U
GEOLOGY Interbedded
peat, clay, and sand in a bog up to 2.5 m thick. Springs appear to be the source
of the uranium. The bedrock is Cretaceous hornblende-biotite quartz monzodiorite
and granodiorite of Zephyr Cove.
RADIOACTIVE MINERALS
Anomalously radioactive carbonaceous material
HOST ROCK
Sedimentary: Quaternary marsh sediments
MAIN COMMODITIES
U
REFERENCES Otton and others; 1985; Grose, 1985.
NOTES
NO. 152
NAME
Mountain View group (11 claims)
OTHER NAME Imperial
claims(?)
COUNTY Douglas
LOCATION Sec. 31(?),
T11N, R23E
UTMN 4294300
UTME
287500
DISTRICT Wellington
QUAD Oreana Peak
7.5' (1986)
DEVELOPMENT One 10-foot-deep
pit.
RADIOACTIVITY Background = 0.02 mR/hr, High = 0.075
mR/hr
GEOLOGY Anomalous radioactivity is associated with an
iron-stained fracture in Jurassic granitic rocks.
RADIOACTIVE MINERALS
Anomalously radioactive iron oxide(?)
HOST ROCK
Intrusive: Jurassic granitic rocks.
MAIN COMMODITIES
U
OLD MAP NO. 128
REFERENCES AEC Report 3400;
Mason and others, 1996; Garside, 1973.
NOTES MRDS: M035897,
Exact location uncertain, UTMs from near center of Sec. 31.
NO. 153
NAME Peek-A-Boo
claims
COUNTY Douglas
LOCATION Sec. 36(?),
T14N, R20E
UTMN 4323550
UTME
267800
QUAD McTarnanhan Hill 7.5' (1994)
DEVELOPMENT
Old prospect pits for gold.
RADIOACTIVITY Background
0.015 mR/hr, High = 0.20 mR/hr
GEOLOGY Anomalous radioactivity
occurs along several northwest-trending faults and pyrite-bearing quartz veins
in Tertiary rhyolite.
HOST ROCK Volcanic: Tertiary
rhyolite
MAIN COMMODITIES Au
OTHER COMMODITIES
U
OLD MAP NO. 125
REFERENCES AEC Report 3396;
Tingley, 1990; Quade and others, 1990a,b; Mason and others, 1996; Garside,
1973.
NOTES MRDS: M231043
NO.
154
NAME Reconnaissance auger sample site
11
COUNTY Douglas
LOCATION Sec. 12, T13N,
R18E
UTMN 4321250
UTME 248080
QUAD
Glenbrook 7.5' (1982)
DEVELOPMENT 1.2-m-deep auger
hole
RADIOACTIVITY Samples assayed: 232 to 1,630 ppm
U
GEOLOGY Interbedded peat, clay, and sand in a bog. The
bedrock is Cretaceous hornblende quartz monzonite and
monzogranite.
RADIOACTIVE MINERALS Anomalously radioactive
carbonaceous material
HOST ROCK Sedimentary: Quaternary marsh
sediments
MAIN COMMODITIES U
REFERENCES Otton
and others, 1985; Grose, 1985
NOTES Exact location uncertain,
location estimated from Otton and others, 1985
NO. 155
NAME Reconnaissance
auger sample site 17
COUNTY Douglas
LOCATION
Sec. 12, T13N, R18E
UTMN 4321510
UTME
248060
QUAD Glenbrook 7.5' (1982)
DEVELOPMENT
1-m-deep auger hole
RADIOACTIVITY Samples assayed: 612 to 2,570
ppm U
GEOLOGY Interbedded peat, clay, and sand in a bog. The
bedrock is Cretaceous hornblende quartz monzonite and
monzogranite.
RADIOACTIVE MINERALS Anomalously radioactive
carbonaceous material
HOST ROCK Sedimentary: Quaternary marsh
sediments
MAIN COMMODITIES U
REFERENCES Otton
and others, 1985; Grose, 1985
NOTES Exact location uncertain,
location estimated from Otton and others, 1985
NO. 156
NAME Reconnaissance
auger sample site 18
COUNTY Douglas
LOCATION
Sec. 12, T13N, R18E
UTMN 4321550
UTME
247640
QUAD Glenbrook 7.5' (1982)
DEVELOPMENT
1-m-deep auger hole
RADIOACTIVITY Samples assayed: 236 to 684
ppm U
GEOLOGY Interbedded peat, clay, and sand in a bog. The
bedrock is Cretaceous hornblende quartz monzonite and
monzogranite.
RADIOACTIVE MINERALS Anomalously radioactive
carbonaceous material
HOST ROCK Sedimentary: Quaternary marsh
sediments
MAIN COMMODITIES U
REFERENCES Otton
and others, 1985; Grose, 1985
NOTES Exact location uncertain,
location estimated from Otton and others, 1985
NO. 157
NAME Reconnaissance
auger sample site 25
COUNTY Douglas
LOCATION
Sec. 1, T13N, R18E
UTMN 4322650
UTME
247780
QUAD Glenbrook 7.5' (1982)
DEVELOPMENT
1.2-m-deep auger hole
RADIOACTIVITY Samples assayed: 325 to
1,090 ppm U
GEOLOGY Interbedded peat, clay, and sand in a bog.
The bedrock is alaskite.
RADIOACTIVE MINERALS Anomalously
radioactive carbonaceous material
HOST ROCK Sedimentary:
Quaternary marsh sediments
MAIN COMMODITIES
U
REFERENCES Otton and others, 1985; Grose, 1985
NOTES
Exact location uncertain, location estimated from Otton and others,
1985
NO. 158
NAME
Reconnaissance auger sample site 26
COUNTY
Douglas
LOCATION Sec. 1, T13N, R18E
UTMN
4322720
UTME 248000
QUAD Glenbrook 7.5'
(1982)
DEVELOPMENT 1.2-m-deep auger
hole
RADIOACTIVITY Samples assayed: 922 to 1,640 ppm
U
GEOLOGY Interbedded peat, clay, and sand in a bog. The
bedrock is alaskite.
RADIOACTIVE MINERALS Anomalously
radioactive carbonaceous material
HOST ROCK Sedimentary:
Quaternary marsh sediments
MAIN COMMODITIES
U
REFERENCES Otton and others, 1985; Grose, 1985
NOTES
Exact location uncertain, location estimated from Otton and others,
1985
NO. 159
NAME
Reconnaissance auger sample site 28
COUNTY
Douglas
LOCATION Sec. 1, T13N, R18E
UTMN
4322980
UTME 247880
QUAD Glenbrook 7.5'
(1982)
DEVELOPMENT 1.8-m-deep auger
hole
RADIOACTIVITY Samples assayed: 94 to 2,450 ppm
U
GEOLOGY Interbedded peat, clay, and sand in a bog. The
bedrock is alaskite.
RADIOACTIVE MINERALS Anomalously
radioactive carbonaceous material
HOST ROCK Sedimentary:
Quaternary marsh sediments
MAIN COMMODITIES
U
REFERENCES Otton and others, 1985; Grose, 1985
NOTES
Exact location uncertain, location estimated from Otton and others,
1985
NO. 160
NAME
Reconnaissance auger sample site 29
COUNTY
Douglas
LOCATION Sec. 2, T13N, R18E
UTMN
4322990
UTME 247420
QUAD Glenbrook 7.5'
(1982)
DEVELOPMENT 1.8-m-deep auger
hole
RADIOACTIVITY Samples assayed: 145 to 609 ppm
U
GEOLOGY Interbedded peat, clay, and sand in a bog. The
bedrock is Cretaceous hornblende-biotite quartz monzodiorite and granodiorite of
Zephyr Cove.
RADIOACTIVE MINERALS Anomalously radioactive
carbonaceous material
HOST ROCK Sedimentary: Quaternary marsh
sediments
MAIN COMMODITIES U
REFERENCES Otton
and others, 1985; Grose, 1985
NOTES Exact location uncertain,
location estimated from Otton and others, 1985
NO. 161
NAME Reconnaissance
auger sample site 31
COUNTY Douglas
LOCATION
Sec. 3, T13N, R18E
UTMN 4322300
UTME
244700
QUAD Glenbrook 7.5' (1982)
DEVELOPMENT
2.4-m-deep auger hole
RADIOACTIVITY Samples assayed: 23 to
1,360 ppm U
GEOLOGY Interbedded peat, clay, and sand in a bog.
The bedrock is Cretaceous hornblende-biotite quartz monzodiorite and
granodiorite of Zephyr Cove.
RADIOACTIVE MINERALS Anomalously
radioactive carbonaceous material
HOST ROCK Sedimentary:
Quaternary marsh sediments
MAIN COMMODITIES
U
REFERENCES Otton and others, 1985; Grose, 1985
NOTES
Exact location uncertain, location estimated from Otton and others,
1985
NO. 162
NAME
Reconnaissance auger sample site 35
COUNTY
Douglas
LOCATION Sec. 36, T14N, R18E
UTMN
4324150
UTME 247900
QUAD Glenbrook 7.5'
(1982)
DEVELOPMENT 1.5-m-deep auger
hole
RADIOACTIVITY Samples assayed: 39 to 586 ppm
U
GEOLOGY Interbedded peat, clay, and sand in a bog. The
bedrock is Cretaceous hornblende quartz monzonite and
monzogranite.
RADIOACTIVE MINERALS Anomalously radioactive
carbonaceous material
HOST ROCK Sedimentary: Quaternary marsh
sediments
MAIN COMMODITIES U
REFERENCES Otton
and others, 1985; Grose, 1985
NOTES Exact location uncertain,
location estimated from Otton and others, 1985
NO. 163
NAME Reconnaissance
auger sample site 42
COUNTY Douglas
LOCATION
Sec. 26, T14N, R18E
UTMN 4325740
UTME
247140
QUAD Glenbrook 7.5' (1982)
DEVELOPMENT
1-m-deep auger hole
RADIOACTIVITY Samples assayed: 104 to 681
ppm U
GEOLOGY Interbedded peat, clay, and sand in a bog. The
bedrock is Cretaceous hornblende-biotite quartz monzodiorite and granodiorite of
Zephyr Cove.
RADIOACTIVE MINERALS Anomalously radioactive
carbonaceous material
HOST ROCK Sedimentary: Quaternary marsh
sediments
MAIN COMMODITIES U
REFERENCES Otton
and others, 1985; Grose, 1985
NOTES Exact location uncertain,
location estimated from Otton and others, 1985
NO. 164
NAME Reconnaissance
auger sample site 45
COUNTY Douglas
LOCATION
Sec. 24, T14N, R18E
UTMN 4326800
UTME
247680
QUAD Glenbrook 7.5' (1982)
DEVELOPMENT
0.6-m-deep auger hole
RADIOACTIVITY Samples assayed: 414 to 892
ppm U
GEOLOGY Interbedded peat, clay, and sand in a bog. The
bedrock is Cretaceous hornblende-biotite quartz monzodiorite and granodiorite of
Zephyr Cove.
RADIOACTIVE MINERALS Anomalously radioactive
carbonaceous material
HOST ROCK Sedimentary: Quaternary marsh
sediments
MAIN COMMODITIES U
REFERENCES Otton
and others, 1985; Grose, 1985
NOTES Exact location uncertain,
location estimated from Otton and others, 1985
NO. 165
NAME Spooner
Lake
COUNTY Douglas
LOCATION Sec. 1, T14N,
R18E
UTMN 4332500
UTME 248500
QUAD
Glenbrook 7.5' (1982)
RADIOACTIVITY Sediments contain up
to 2,500 ppm U over a 0.5 m interval; Radioactivity low, <2 times
background
GEOLOGY Sediments in the bottom of Spooner Lake
contain up to 2,500 ppm U over a 0.5 m interval. The source is apparently
weathered granitic rocks.
RADIOACTIVE MINERALS Anomalously
radioactive carbonaceous material(?)
HOST ROCK Sedimentary:
Quaternary marsh sediments
MAIN COMMODITIES
U
REFERENCES Otten and others, 1985
NOTES
NO. 166
NAME Triangle
group
COUNTY Douglas
LOCATION Sec. 12(?),
T10N, R22E
UTMN 4291400
UTME
285500
DISTRICT Mountain House
QUAD Long Dry
Canyon 7.5' (1988)
RADIOACTIVITY Background = 0.02 mR/hr, High
= 7.0 mR/hr. A select sample contained 0.057% eU3O8.
GEOLOGY A
highly altered area in a metamorphosed conglomerate is radioactive. No uranium
minerals reported.
HOST ROCK Metamorphic: Metamorphosed
conglomerate
MAIN COMMODITIES U
OLD MAP NO.
127
REFERENCES AEC Report 3398; Mason and others, 1996;
Garside, 1973.
NOTES MRDS: M035880, Exact location uncertain,
UTMs from group of prospect symbols on topographic map.
NO. 167
NAME Upper Zephyr
fen
COUNTY Douglas
LOCATION Sec. 1, T13N,
R18E
UTMN 4322700
UTME 248390
QUAD
Glenbrook 7.5' (1982)
U RESOURCES/ RESERVES 1985: 15,000
kg contained U from sediment averaging 1,500 ppm.
DEVELOPMENT
Series of auger holes generally less than 2 m deep.
RADIOACTIVITY
Samples with highest assays: 3,000 to 5,760 ppm U; Radioactivity low,
<2 times background
GEOLOGY Interbedded peat, clay, and sand
in a bog up to 4.6 m thick. Most sediment appears to be post-Mazama (6,700 BP).
Springs appear to be the source of the uranium, which is likely derived from the
bedrock which is Cretaceous hornblende quartz monzonite and
monzogranite.
RADIOACTIVE MINERALS Anomalously radioactive
carbonaceous material
HOST ROCK Sedimentary: Quaternary marsh
sediments
MAIN COMMODITIES U
REFERENCES Otton
and others, 1985; Grose, 1985
NOTES
NO. 168
NAME Anomaly No.
1
COUNTY Elko
LOCATION Sec. 20, T46N, R53E
(location approximate). On the Duck Valley Indian Reservation.
UTMN
4635000
UTME 580000
DISTRICT
Alder
QUAD Tennessee Mountain 7.5'
(1986)
RADIOACTIVITY Background = 100-150
cps.
GEOLOGY An airborne radioactive anomaly is reported from
this area. The rocks in the area are andesite flows and intermediate-composition
ash-flow tuffs. No anomalous radioactivity could be found in 1979, and no
prospect pits were observed.
HOST ROCK Intrusive/Volcanic:
Cretaceous quartz monzonite; Tertiary Idavada Volcanics
MAIN
COMMODITIES U(?)
OLD MAP NO.
145
REFERENCES Peterson, 1956, p. 7; Lapointe and others, 1991;
Bushnell, 1967; Bentz and others, 1983; Bentz and Tingley, 1983; Garside, 1973;
1979.
NOTES Exact location uncertain, UTMs from near center of
Sec. 20.
NO. 169
NAME
Anomaly No. 3
COUNTY Elko
LOCATION Sec. 28,
T46N, R55E
UTMN 4633296
UTME
601836
DISTRICT Island Mountain
QUAD Merritt
Mountain 7.5' (1986)
RADIOACTIVITY About 500 cps above
background.
GEOLOGY An airborne radiometric anomaly was noted
to the east of Mountain City, but the bedrock there was covered with alluvium,
and no evaluation could be made. Bedrock is probably Tertiary Jarbidge
Rhyolite
HOST ROCK Volcanic: Tertiary Jarbidge
Rhyolite(?)
MAIN COMMODITIES U(?)
OLD MAP NO.
144
REFERENCES Peterson, 1956, p. 7; Mason and others, 1996;
Garside, 1973; 1979; Coats, 1987
NOTES MRDS: M234110; UTMs from
MRDS.
NO. 170
NAME
Anomaly No.4
COUNTY Elko
LOCATION Sec. 23,
T37N, R67E; 2.5 mi. southeast of Cobre.
UTMN
4550000
UTME 721800
QUAD Cobre SE 7.5'
(1967)
RADIOACTIVITY Readings of 3,000 to 3,500 cps were noted
during an airborne radiometric survey. Normal background would be 1,000 to.
2,000 cps.
GEOLOGY An area of rhyolite flows is anomalously
radioactive over a considerable area. A locality having five times the
background radioactivity was noted during ground reconnaissance. This anomaly is
almost certainly on the north end of a large mass of highly radioactive topaz
rhyolite (Price and others, 1992). See Toanano Range Rhyolite
description.
HOST ROCK Volcanic: rhyolite flows
MAIN
COMMODITIES U(?)
OLD MAP NO.
161
REFERENCES Peterson, 1956; Garside, 1973; Price and others,
1992.
NOTES The closest rhyolite to Cobre is about 3 miles to
the southeast, where the location is estimated to be.
NO. 171
NAME Asphaltite
prospect
COUNTY Elko
LOCATION N½ N½ Sec. 1,
T29N, R52E; on the north side of Smith Creek.
UTMN
4475600
UTME 580040
DISTRICT Robinson
Mountain
QUAD Papoose Canyon 7.5' (1985)
DEVELOPMENT
Several trenches and pits, a shallow shaft and several short
adits.
RADIOACTIVITY Two times background; a sample contained
<1 ppm U3O8.
GEOLOGY An asphaltic pyrobitumen (probably
impsonite or grahamite) has been reported from several localities between Trout
Creek and Willow Creek, near the Eureka County line. The occurrences are
reportedly associated with a north-trending basin-and-range fault. At the best
described locality, the impsonite(?) occurs in lenses, stringers, and sheets
along a fractured zone about 3 feet wide. The veins cut sandstone, shale, and
conglomerate of the Diamond Peak Fm.-Chainman Shale, and range from pure lenses
up to 18 inches wide to asphalt impregnated sandstone. The vein which follows
the fracture zone trends N60ºE and is nearly vertical. Samples of the
impsonite(?) are said to resemble coal and have a specific gravity of 1.9, a
pitch-like luster, and conchoidal fracture. Vanadium and uranium are both
present in anomalous amounts. The vanadium is present almost exclusively in the
impsonite?, as shown by the ash analyses below (Vanderburg, 1938). Original
sample 0.16% V2O5. Ash and impurities 6.4. Minus 20-mesh ash 24.8. Another
sample (Vanderburg, 1938, p. 57) gave the following result: Gold Trace; Silver
None; V2O5 0.918%; U3O8 0.097%. This property could not be located in
1970.
RADIOACTIVE MINERALS Anomalous uranium in asphaltic
pyrobitumen
HOST ROCK Sedimentary: Diamond Peak Fm.; Chainman
Shale
MAIN COMMODITIES Au, Bitumen, U, V
OLD MAP NO.
166
REFERENCES Anderson, 1909; Vanderburg, 1938, p. 56,
57; Gianella, 1945, p. 69; Roberts, Montgomery, and Lehner, 1967, p. 112;
Lovering, 1954, p. 96; Lincoln, 1923, p. 261; Hamilton, 1956, p. 73; Tischler
and Oesterling, 1964; Mason and others, 1996; Lapointe and others, 1991; Bentz
and others, 1983; Bentz and Tingley, 1983; Garside, 1973; 1979; Berridge and
Wolverson (1982).
NOTES MRDS: M232282, M233375; UTMs from
location on map in Bentz and others (1983) and Bentz and Tingley (1983).
NO. 172
NAME Autunite group
(Nos. 1-16) and October group (Nos. 1-22)
COUNTY
Elko
LOCATION Sec. 29, T46N, R54E (protracted)
UTMN
4633008
UTME 589477
DISTRICT Mountain
City
QUAD Mountain City 7.5' (1986)
DEVELOPMENT
Small bulldozer cut.
RADIOACTIVITY Background = 0.017
mR/hr, High = 0.5 mR/hr. A plite sample: 48 ppm U3O8: weathered shear zone clay
sample: 3,850 ppm U3O8.
GEOLOGY Autunite, torbernite, and
meta-torbernite are present along an altered and silicified fracture zone in
Cretaceous quartz monzonite. The mineralized zone strikes N12ºW, is nearly
vertical, and contains minor amounts of quartz, molybdenum, and iron oxides. A
nearby molybdenum prospect contains pyrite and molybdenite in quartz veins and
disseminations in the quartz monzonite.
RADIOACTIVE MINERALS
Autunite; metatorbernite; torbernite
HOST ROCK Intrusive:
Cretaceous quartz monzonite
MAIN COMMODITIES U
OLD MAP
NO. 132
REFERENCES AEC Report 3429; Schilling, 1962;
Proffitt and others, 1982; Lapointe and others, 1991; Bentz and others, 1983;
Bentz and Tingley, 1983; Garside, 1973; Castor and Ferdock, 2004.
NOTES
UTMs converted from Proffitt and others (1982) latitude/longitude
NO. 173
NAME Autunite
occurrence, location V-14
OTHER NAME Dawley Canyon area; Dawley
Canyon mica area
COUNTY Elko
LOCATION NE¼ SW¼
SW¼ Sec. 16, T29N, R58E
UTMN 4472190
UTME
632060
DISTRICT Valley View
QUAD Franklin Lake
NW 7.5' (1969)
DEVELOPMENT Prospect pits.
GEOLOGY
Autunite is reported along a north-trending vertical fault which forms
the west contact of a 2.5- to 3-foot-thick, beryl-bearing pegmatite dike. The
dike is one of many pegmatite and opalite dikes cutting the biotite-muscovite
granite of the Harrison Pass stock and nearby quartzites and schists. Pegmatites
of the Dawley Canyon area contain quartz, albite, oligoclase, microcline,
perthite, muscovite, biotite, beryl, garnet, tourmaline, hematite (specularite),
apatite, phlogopite, columbite-tantalite, autunite, andalusite, sillimanite,
adularia, and phenakite.
RADIOACTIVE MINERALS
Autunite
HOST ROCK Intrusive: pegmatite dike
MAIN
COMMODITIES Be, Mica, U
OLD MAP NO.
157
REFERENCES Olson and Hinrichs, 1960; Olson and Adams, 1962;
Tingley, 1981a,b; Mason and others, 1996; Lapointe and others, 1991; Garside,
1973.
NOTES MRDS: M233968; UTMs from point on map in NBMG B106
NO. 174
NAME B and O
claims
OTHER NAME B and D claims
COUNTY
Elko
LOCATION E½ Sec. 35, and Sec. 36, T29N, R66E, and NW¼ Sec.
1, T28N, R66E; Exact location unknown reportedly in low foothills on the east
side of Melrose Mountain
UTMN 4468500
UTME
714000
DISTRICT Dolly Varden
QUAD Dolly Varden
Spring 7.5' (1982)
RADIOACTIVITY Background = 30 cps; High =
100 cps.
GEOLOGY Very slight radioactivity is reported in
Tertiary rhyolitic flows and ash-flows reportedly associated with
hematite.
RADIOACTIVE MINERALS Anomalously radioactive
hematite
HOST ROCK Volcanic: Tertiary rhyolitic flows and
ash-flows
MAIN COMMODITIES U(?)
OLD MAP NO.
170
REFERENCES AEC Report 3416; Snow, 1963, p. 48-50; Garside,
1973; 1979.
NOTES Location uncertain; UTMs from near center of
township.
NO. 175
NAME
Badger property
COUNTY Elko
LOCATION Sec.
15(?), T44N, R65E; Exact location unknown
UTMN
4619000
UTME 700000
DISTRICT
Contact
QUAD Texas Spring 7.5' (1968)
GEOLOGY
Section 15 is mostly in Permian limestone with the northwest quarter in Jurassic
granite.
HOST ROCK Sedimentary/Intrusive: Permian limestone;
Jurassic granite.
MAIN COMMODITIES U(?)
OLD MAP NO.
151
REFERENCES U.S. Atomic Energy Comm., unpublished
map; Coats, 1987; Garside, 1973.
NOTES Exact location
uncertain, UTMs from near center of Sec. 15.
NO.
176
NAME Big Joke claims
COUNTY
Elko
LOCATION Sec. 29, T45N, R55E
UTMN
4624800
UTME 600400
QUAD Merritt Mountain 7.5'
(1986)
DEVELOPMENT Two caved shafts, shallow trench, drill
holes. A pit for road metal on flank of hill.
RADIOACTIVITY
Background = 200 cps; High = 1,200 cps. Green clay overlying quartz monzonite
contains 3,745 ppm U3O8.
GEOLOGY Anomalous radioactivity is
associated with strong hematite staining and clay minerals along fractures in
rhyolitic ash-flow tuff. The tuff overlies Cretaceous quartz monzonite Autunite
has been reported. The best uranium values were from samples of clay at the
tuff-quartz monzonite contact.
RADIOACTIVE MINERALS
Autunite
HOST ROCK Volcanic: Tertiary ash-flow tuff
MAIN
COMMODITIES U
OLD MAP NO. 142
REFERENCES
AEC Report 3431; Walker, Osterwald, and Adams, 1963; Lapointe and others,
1991; Mason and others, 1996; Bentz and others, 1983; Bentz and Tingley, 1983;
Proffitt and others, 1982; Coats and others, 1984; Garside, 1973.
NOTES
MRDS: M233277; UTMs from sketch map in Proffitt and others (1982, no.
6b)
NO. 177
NAME Black
Kettle group (Nos. 1-4)
OTHER NAME Black Kettle claims; Black
Kettle prospect; Banchrof
COUNTY Elko
LOCATION
SW¼ Sec. 27 and NW¼ Sec. 34, T32N, R52E
UTMN
4496900
UTME 574700
DISTRICT
Carlin
QUAD Carlin East 7.5' (1985); Ravens Nest 7.5'
(1985)
DEVELOPMENT A caved 50-foot-deep shaft, bulldozer cuts
and drill holes.
RADIOACTIVITY Samples reportedly contain up to
0.04% U3O8. Radioactivity is 2-3 times background (100-200 cps over black
shales).
GEOLOGY Anomalous radioactivity occurs in black
siltstone of the Devonian Woodruff Fm. on the Black Kettle No.4
claim.
HOST ROCK Sedimentary: Devonian Woodruff Fm.
MAIN
COMMODITIES U, V
OTHER COMMODITIES Barite
NBMG
SAMPLE 151, 152
OLD MAP NO. 164
REFERENCES
D. L. Hetland. written commun., 1971; Smith and Ketner, 1976, p. B45;
Smith, 1976; Mason and others, 1996; Lapointe and others, 1991; Bentz and
others, 1983; Bentz and Tingley, 1983; Garside, 1973; 1979; Berridge and
Wolverson (1982).
NOTES MRDS: M232835; UTMs from prospect
symbol on topographic map nearest site of sample 151.
NO. 178
NAME Contact
area
COUNTY Elko
LOCATION T45N, R64E(?);
e+E179xact location unknown
UTMN 4628000
UTME
685500
DISTRICT Contact
QUAD Contact 7.5'
(1989)
GEOLOGY Radioactive allanite is reported from near
contacts of granitic intrusive rocks with sedimentary rocks (mostly
limestones).
RADIOACTIVE MINERALS Anomalously radioactive
allanite
HOST ROCK Sedimentary/Intrusive: Sedimentary rocks;
granitic intrusive rocks
MAIN COMMODITIES Cu
OTHER
COMMODITIES U(?)
OLD MAP NO.
150
REFERENCES Schrader, 1912; Peterson, 1956; Garside,
1973.
NOTES Exact location uncertain, UTMs from near center of
pluton-sedimentary rock contact in T45N, R64E north of the old Contact townsite.
NO. 179
NAME Deerhead
group (Nos. 1-18)
OTHER NAME Deerhead prospect
COUNTY
Elko
LOCATION Sec. 24, T32N, R52E
UTMN
4499400
UTME 578440
DISTRICT
Carlin
QUAD Carlin East 7.5' (1985)
DEVELOPMENT
A few small bulldozer trenches.
RADIOACTIVITY Samples
reportedly contain up to 608 ppm U3O8.
GEOLOGY Anomalous
radioactivity and flakes of carnotite occur in a silicified fault breccia zone
in shale of the Devonian Woodruff Fm. and an overlying water-laid(?) tuff on the
Deerhead No. 6 claim.
RADIOACTIVE MINERALS carnotite
HOST
ROCK Sedimentary: Devonian Woodruff Fm.
MAIN COMMODITIES
Barite, U
OTHER COMMODITIES Zn
NBMG SAMPLE
150
OLD MAP NO. 163
REFERENCES D. L.
Hetland. written commun., 1971; Smith and Ketner, 1976, p. B45; Smith, 1976;
Mason and others, 1996; Lapointe and others, 1991; Bentz and others, 1983; Bentz
and Tingley, 1983; Garside, 1973; 1979; Castor and Ferdock, 2004; Berridge and
Wolverson (1982).
NOTES MRDS: M232834; UTMs from MRDS
NO. 180
NAME Delcer
Butte
OTHER NAME Delcer Buttes
COUNTY
Elko
LOCATION Sec. 27, T29N, R62E (protracted)
UTMN
4470400
UTME 662700
DISTRICT
Delker
QUAD Odgers Ranch 7.5' (1984)
DEVELOPMENT
Numerous workings (for copper).
RADIOACTIVITY Up to 2.5
times background; highest = 275 cps. One sample contained 30 ppm
U3O8.
GEOLOGY Anomalous radioactivity and uranium values are
found in Paleozoic carbonate rocks that are silicated by an adjacent Jurassic(?)
quartz monzonite stock. Copper skarn mineralization is developed in the
carbonate rocks. Anomalous radioactivity is associated with limonite, which was
probably derived by oxidation of pyrite and other sulfide minerals.
Latite-dacite dikes also cut the carbonate rocks. The stock is anomalous in
uranium (5.4 ppm U3O8).
HOST ROCK Igneous: Skarn
mineralization
MAIN COMMODITIES Cu
OTHER COMMODITIES
U
REFERENCES Lapointe and others, 1991; Garside, 1973;
Percival and Bright, 1982, no. 4.
NOTES UTMs from workings
shown on topographic map.
NO.
181
NAME Drill Hole TC-92-29
OTHER NAME Trout
Creek Project
COUNTY Elko
LOCATION SE¼ Sec.
23, T45N, R65E
UTMN 4626480
UTME
701570
DISTRICT Contact
QUAD Tijuana John 7.5'
(1989)
DEVELOPMENT Drill holes
RADIOACTIVITY
Assay: 30 ppm U at 300'; 10-140 ppm U between 320'-345' (140 ppm at 330').
Adjacent drill holes assay around 10 ppm U at similar depths.
GEOLOGY
Strongly silicified tuffs and sandstone in the Miocene Humboldt
Formation.
HOST ROCK Sedimentary: Miocene Humboldt
Formation
MAIN COMMODITIES Au
OTHER COMMODITIES
U
REFERENCES Limbach, 1991, 1993
NOTES
Elevated U assay in one drill hole.
NO.
182
NAME Errington and Thiel mica mine
OTHER NAME
Errington and Thiel group; Big Mica mine; Holiday(?)
COUNTY
Elko
LOCATION Sec. 8, T29N, R58E
UTMN
4473360
UTME 631120
DISTRICT Valley
View
QUAD Franklin Lake NW 7.5' (1969)
OTHER
PRODUCTION 1940s: Sheet mica
DEVELOPMENT Pits and
adits.
GEOLOGY Eleven parallel, north-striking pegmatite dikes
cut quartzite and schist. Dikes dip 40°E to vertical. Pegmatite dikes contain
10-20% mica as sheets and books and beryl crystals up to 3 inches in diameter.
Pegmatite dikes are zoned and consist of plagioclase, quartz, muscovite,
perthite garnet, beryl, microcline, apatite, zircon, hematite, biotite,
phlogopite, tourmaline, and penninite. The three largest pegmatite bodies are up
to 11 feet thick and 350 feet long.
HOST ROCK Intrusive:
pegmatite dike
MAIN COMMODITIES Be, Fe, Mica
OTHER
COMMODITIES U
REFERENCES Lapointe and others, 1991;
Mason and others, 1996; Tingley, 1981a,b; Murphy, 1943.
NOTES
MRDS: M233963; UTMs from NBMG B106; MRDS notes U, but B106 does not.
NO. 183
NAME Garnet
mine
OTHER NAME Tennessee Mountain area; Tennell Creek area;
Knowles Bros. mine; Garnet Hills
COUNTY Elko
LOCATION
Secs. 16, 17, T45N, R56E
UTMN 4627850
UTME
610180
DISTRICT Alder
QUAD Tennessee
Mountain 7.5' (1986)
OTHER PRODUCTION 1960s-1970s: 16,000 tons
W ore; 1970-1977: 6,024 units WO3
DEVELOPMENT 2,600 feet of
diamond drilling, 300 feet of upper adit, 400 feet of lower
adit.
RADIOACTIVITY Background = 0.02 mR/hr; High = 1.00 mR/hr.
One sample contained 0.48% U308.
GEOLOGY Uraninite occurs along
a fault that strikes N75°W and dips 65°E in a body of tactite. The uranium
occurrence is reported to be 295 feet from the portal of one adit. The tactite
has replaced limestone along the contact of a granite stock with the Cambrian or
Ordovician Tennessee Mountain Formation. Pyrite, molybdenite, bismuthinite, and
minor chalcopyrite occur with finely disseminated scheelite. Exploration work
was done for tungsten. 1963: W reserves: 224,000 tons at 0.5% WO3, 540,000 tons
at 0.4% WO3.
RADIOACTIVE MINERALS uraninite
HOST ROCK
Sedimentary: Cambrian or Ordovician Tennessee Mountain
Formation
MAIN COMMODITIES W
OTHER COMMODITIES
Bi, Cu, Mo, U
NBMG SAMPLE 1100
OLD MAP NO.
147
REFERENCES AEC Report 3430; Schilling, 1962; Bushnell,
1967; Coats and McKee, 1972; Lapointe and others, 1991; Mason and others, 1996;
Bentz and others, 1983; Bentz and Tingley, 1983; Stager and Tingley, 1985;
Garside, 1973; Castor and Ferdock, 2004.
NOTES MRDS: M232807
NO. 184
NAME Gilbert
Canyon area
OTHER NAME Unnamed beryl prospects
COUNTY
Elko
LOCATION SE¼ Sec. 9, T29N, R57E
UTMN
4473500
UTME 622000
DISTRICT Gilbert
Canyon
QUAD Green Mountain 7.5' (1985)
DEVELOPMENT
A small trench and pit.
GEOLOGY A small piece of
uraninite and its alteration products was reportedly found near an 8-foot-wide
quartz mass forming the core of a larger pegmatite body. Beryl,
columbite-tantalite, and garnet were also found.
RADIOACTIVE MINERALS
uraninite
HOST ROCK Intrusive: pegmatite body
MAIN
COMMODITIES Be, Columbite-tantalite, U
OLD MAP NO.
156
REFERENCES Olson and Hinrichs, 1960; Olson and Adams, 1962;
Mason and others, 1996; Garside, 1973.
NOTES MRDS: M233335;
UTMs from near center of quarter section.
NO.
185
NAME Gold Basin district
COUNTY
Elko
LOCATION T47N, R56E; location uncertain
UTMN
4645000
UTME 609800
DISTRICT Gold
Basin
QUAD Big Table 7.5' (1986)
OTHER PRODUCTION
1900-1931: Unknown amount of placer Au
GEOLOGY
Monazite-bearing placer gravels reported. Minor placer gold deposits worked
along the “north fork” of the Bruneau River near Rowland.
RADIOACTIVE
MINERALS monazite
HOST ROCK Sedimentary (placer):
alluvium
MAIN COMMODITIES Au
OTHER COMMODITIES
Monazite, U(?)
OLD MAP NO. 158
REFERENCES
Lovering, 1954; Vanderburg, 1936; Garside, 1973.
NOTES Exact
location uncertain, UTMs from near center of the Bruneau River flowing through
T47N, R56E.
NO. 186
NAME
Good Luck claims
COUNTY Elko
LOCATION Sec. 18,
T44N, R55E
UTMN 4618000
UTME
597500
QUAD Wild Horse 7.5' (1986)
DEVELOPMENT
Bulldozer trenches and pits.
GEOLOGY Radioactivity reportedly
occurs in Tertiary rhyolites and tuffs. The geology may be similar to that at
Happy Joe No.1, etc.
HOST ROCK Volcanic: Tertiary rhyolites and
tuffs
MAIN COMMODITIES U
OLD MAP NO.
143
REFERENCES D. L. Hetland, written commun., 1971; Mason and
others, 1996; Lapointe and others, 1991; Coats and others, 1984; Garside,
1973.
NOTES MRDS: M233267; Exact location uncertain, UTMs from
near center of location given in Garside (1973)
NO. 187
NAME Good Morning
claims
COUNTY Elko
LOCATION Sec. 28, T44N,
R55E
UTMN 4614500
UTME
602000
DISTRICT Island Mountain
QUAD Wild
Horse 7.5' (1986)
DEVELOPMENT Bulldozer trenches and
pits.
GEOLOGY Radioactivity reportedly occurs in rhyolites and
tuffs mostly in the Miocene Danger Point Tuff. The geology may be similar to
that at Happy Joe No.1, etc.
HOST ROCK Volcanic: Miocene Danger
Point Tuff
MAIN COMMODITIES U
OLD MAP NO.
143
REFERENCES D. L. Hetland, written commun., 1971; Mason and
others, 1996; Lapointe and others, 1991; Coats and others, 1984; Garside,
1973.
NOTES MRDS: M233267; Exact location uncertain, UTMs from
near center of location given in Garside (1973)
NO. 188
NAME Granite group (Nos.
1-18)
OTHER NAME Granite group
COUNTY
Elko
LOCATION Sec. 30, T46N, R54E (protracted)
UTMN
4633189
UTME 586661
DISTRICT Mountain
City
QUAD Mountain City 7.5' (1986)
DEVELOPMENT
Several small trenches.
RADIOACTIVITY Aplite sample: 48
ppm U, ash-flow lapilli tuff sample: 112 ppm U3O8, pumice flow sample: 75 ppm
U3O8.
GEOLOGY Anomalous radioactivity with minor autunite
occurs in Tertiary volcanic rocks near the contact with underlying quartz
monzonite. The volcanic unit is the Cougar Point Welded Tuff. The occurrence
appears to localized in depressions in the quartz monzonite which have been
filled with Tertiary ash falls, pumice flows, and pumice flow
breccias.
RADIOACTIVE MINERALS Autunite
HOST ROCK
Volcanic: Tertiary volcanic rocks
MAIN COMMODITIES
U
OLD MAP NO. 131
REFERENCES D.L. Hetland,
written commun., 1971;Coats, 1968; Proffitt and others, 1982; Lapointe and
others, 1991; Mason and others, 1996; Bentz and others, 1983; Bentz and Tingley,
1983; Garside, 1973.
NOTES MRDS: M233279, UTMs converted from
Proffitt and others (1982) latitude/longitude.
NO. 189
NAME Happy Joe No.1,
Happy Mendive
OTHER NAME Big Joe No. 1(?)
COUNTY
Elko
LOCATION Sec. 20, T45N, R55E
UTMN
4626000
UTME 600000
QUAD Merritt Mountain 7.5'
(1986)
U PRODUCTION About 1960(?): 225 tons of ore containing
0.5% U3O8.
DEVELOPMENT One water-filled shaft of unknown depth
and three trenches.
RADIOACTIVITY Background = 0.03 mR/hr; High
= 0.5 mR/hr. A 5-foot chip sample contained 0.08 eU3O8 (0.087 cU3O8). Sample of
rhyolite from near shaft : 162 ppm U3O8; Sample of rhyolite from trench: 851 ppm
U3O8.
GEOLOGY Autunite occurs in fault zones in rhyolite. The
anomalous radioactivity extends for at least half a mile along the structure and
a branching structure. Tuff is mostly the Miocene Danger Point Tuff and some
Miocene Phenorhyolite of Cold Springs Mountain.
RADIOACTIVE MINERALS
Autunite
HOST ROCK Volcanic: Miocene Phenorhyolite of
Cold Springs Mountain
MAIN COMMODITIES U
OLD MAP NO.
142
REFERENCES AEC Report 3431; Walker, Osterwald, and
Adams, 1963; Lapointe and others, 1991; Mason and others, 1996; Bentz and
others, 1983; Bentz and Tingley, 1983; Proffitt and others, 1982; Coats and
others, 1984; Garside, 1973.
NOTES MRDS: M233277; UTMs are near
center of uranium occurrence, the location of which is given in Proffitt and
others (1982). MRDS gives location for Happy Mendive at 4624600N, 598250E
NO. 190
NAME Hawk group (Nos.
1-3), Denis claims (Nos. 1 and 2)
COUNTY
Elko
LOCATION NE¼ Sec. 33, T46N, R54E
(unsurveyed).
UTMN 4631800
UTME
592700
DISTRICT Mountain City
QUAD Mountain
City 7.5' (1986)
DEVELOPMENT Minor drilling and
trenching.
GEOLOGY Autunite occurs in conglomerate and rhyolite
ash-flow of the Oligocene Tuff of Harris Gulch overlying quartz
monzonite.
RADIOACTIVE MINERALS Autunite
HOST ROCK
Volcanic: Oligocene Tuff of Harris Gulch
MAIN COMMODITIES
U
OLD MAP NO. 137
REFERENCES D.L.
Hetland, written commun., 1971;Lapointe and others, 1991; Mason and others,
1996; Bentz and others, 1983; Bentz and Tingley, 1983; Coats and Greene, 1984;
Garside, 1973.
NOTES MRDS: M233276, UTMs from MRDS and mark the
approximate center of the claim block.
NO.
191
NAME Hot Ash group (Nos. 1-9)
OTHER NAME
Dennis claims; North and South Ground Hog claims; CA group (46 claims); Kilgore
Gold Co.; Mountain West Uranium Property
COUNTY
Elko
LOCATION Secs. 26, 27, 34, 35, T46N, R54E
UTMN
4632050
UTME 593080
DISTRICT Mountain
City
QUAD Mountain City 7.5' (1986), Merritt Mountain 7.5'
(1986)
DEVELOPMENT Several small
trenches.
RADIOACTIVITY Radioactivity = 2 to 20 times
background. Grab sample of yellow-green sandstone: 1730 ppm U3O8, two grab
samples of arkosic conglomerate: 150 ppm, 253 ppm U3O8, grab sample of
carbonaceous bentonite: 218 ppm U3O8, grab sample of quartz monzonite with
weathered autunite(?): 32 ppm U3O8.
GEOLOGY Radioactivity and
minor autunite occur along the contact of volcanic rocks with underlying quartz
monzonite. The volcanic rocks are mostly rhyolite ash-flow of the Oligocene Tuff
of Harris Gulch. The host for the uranium mineralization is arkosic sandstone,
conglomerate, and air-fall tuffs deposited in a paleovalley developed on quartz
monzonite.
RADIOACTIVE MINERALS Autunite
HOST ROCK
Volcanic: Oligocene Tuff of Harris Gulch
MAIN COMMODITIES
U
OLD MAP NO. 138
REFERENCES D.L.
Hetland, written commun., 1971;Lapointe and others, 1991; Mason and others,
1996; Bentz and others, 1983; Bentz and Tingley, 1983; Coats and Greene, 1984;
Proffitt and others, 1982; Garside, 1973; Kilgore Minerals Ltd., 2006; Dallas,
2006; Sheehan, 1978, p. 80
NOTES MRDS: M233275, UTMs from
center of Mountain West project area.
NO.
192
NAME Hot Spot No. 1 claim (1956)
OTHER NAME
Eddie No. 1 (1968); Hot Spot claims (15 claims)
COUNTY
Elko
LOCATION Sec. 2, T45N, R53E, southwest of Mountain City
0.4 miles on hill north of Russel Gulch, adjoining the rodeo
grounds.
UTMN 4631906
UTME
585269
DISTRICT Mountain City
QUAD Mountain
City 7.5' (1986)
U RESOURCES/ RESERVES 1957: indicated ore:
13,022 tons, 0.137% U3O8 in eight small deposits.
DEVELOPMENT
Four bulldozer cuts.
RADIOACTIVITY Background = 150 cps, High =
5,000 cps, average along a 25-foot strike length = 1,000 to 1,200 cps, clay
sample: 489 ppm U3O8.
GEOLOGY Autunite occurs along a fault
which separates granodiorite from the pyroxene andesite of Russell Gulch (Coats,
1968). The uranium mineralization is in a 2.5-foot-wide zone, and is associated
with clay minerals.
RADIOACTIVE MINERALS Autunite
HOST
ROCK Volcanic/Intrusive: Eocene(?) Andesite of Russell Gulch,
Cretaceous Mountain City quartz monzonite stock
MAIN COMMODITIES
U
OLD MAP NO. 133
REFERENCES Coats,
1968; AEC Report 3427; Proffitt and others, 1982; Lapointe and others, 1991;
Mason and others, 1996; Bentz and others, 1983; Bentz and Tingley, 1983;
Garside, 1973; Saum, 1976.
NOTES MRDS: M233274, UTMs converted
from Proffitt and others (1982) latitude/longitude. 15 Hot Spot claims in Secs.
35, 36, T46N, R53E and secs, 1, 2, 3, T45N, R53E.
NO. 193
NAME Huntington Creek
uranium prospect
COUNTY Elko
LOCATION Sec. 12,
T31N, R55E
UTMN 4492880
UTME
607680
QUAD West of Lee 7.5' (1990)
DEVELOPMENT
Nine shallow trenches, pits, and bulldozer cuts. No recent (1991)
exploration work.
RADIOACTIVITY Up to 10 times background.
Samples contained up to 440 ppm U3O8.
GEOLOGY Uranium
concentrated along a weakly silicified sandstone-limestone contact and in a
pebble conglomerate. Sedimentary units strike northeast and dip gently
southeast.
RADIOACTIVE MINERALS uranium-bearing rock
HOST
ROCK Sedimentary: sandstone-limestone contact and in a pebble
conglomerate
MAIN COMMODITIES U
REFERENCES
Lapointe and others, 1991; Mason and others, 1996; Tingley, 1981a,b; Murphy,
1943; Percival and Bright, 1982, no. 2.
NOTES UTMs from
prospect symbol on topographic map.
NO.
194
NAME Independence claims (Nos. 1-10)
COUNTY
Elko
LOCATION Sec. 35(?), T44N, R63E
UTMN
4614000
UTME 682500
DISTRICT
Contact
QUAD Henry 7.5' (1982)
DEVELOPMENT Old
workings for copper and precious metals.
RADIOACTIVITY
Background = 0.015 mR/hr; High = 0.15 mR/hr
GEOLOGY Anomalous
radioactivity occurs in oxidized copper-bearing veins which cut a Cretaceous(?)
granodiorite.
RADIOACTIVE MINERALS Anomalously radioactive
copper minerals
HOST ROCK Intrusive: Cretaceous(?)
granodiorite
MAIN COMMODITIES Cu
OTHER COMMODITIES
U(?)
OLD MAP NO. 149
REFERENCES AEC
Report 3407; Garside, 1973.
NOTES Exact location uncertain,
UTMs from near center of Sec. 35.
NO.
195
NAME Jackpot and Hotwater claims
COUNTY
Elko
LOCATION Sec. 32, T46N, R54E (unsurveyed). Projected from
the west
UTMN 4631300
UTME
589900
DISTRICT Mountain City
QUAD Mountain
City 7.5' (1986)
GEOLOGY Most of the claims are over Cretaceous
granitic rock. The northernmost claims partly cover Oligocene Tuff of Harris
Gulch.
HOST ROCK Volcanic: Oligocene Tuff of Harris
Gulch
MAIN COMMODITIES U
OLD MAP NO.
136
REFERENCES D.L. Hetland, written commun., 1971;Lapointe and
others, 1991; Mason and others, 1996; Bentz and others, 1983; Bentz and Tingley,
1983; Coats and Greene, 1984; Garside, 1973.
NOTES MRDS:
M233271, UTMs from MRDS
NO.
196
NAME KEF No. 2 claim
COUNTY
Elko
LOCATION W½ Sec. 35, T30N, R52E; Secs. 19 and 24 are also
mentioned.
UTMN 4476601
UTME
577652
DISTRICT Railroad
QUAD Papoose Canyon
7.5' (1985)
RADIOACTIVITY Background = 0.025 mR/hr; High = 0.04
mR/hr. A sample contained 10 ppm U3O8.
GEOLOGY Very weak
radioactivity is reportedly associated with clays, gypsum, and weak iron
staining in lake sediments of the upper Tertiary and lower Quaternary Hay Ranch
Fm. The anomaly may be due to radioactivity differences between alluvium and
Tertiary sediments.
RADIOACTIVE MINERALS Anomalously
radioactive clays, gypsum, and iron oxide
HOST ROCK
Sedimentary: Upper Tertiary and lower Quaternary Hay Ranch Fm.
MAIN
COMMODITIES U(?)
OLD MAP NO.
165
REFERENCES AEC Report 3468; Smith and Ketner, 1976, p. B45;
U.S. Bureau of Mines, 1995; Garside, 1973; 1979:; Berridge and Wolverson
(1982).
NOTES MASMILS 0320070427; UTMs from Berridge and
Wolverson (1982)
NO. 197
NAME
Locality 32
COUNTY Elko
LOCATION S½ SE¼
NW¼ Sec. 19, T47 N; R70E; near road approximately half a mile northeast of Goose
Creek Ranch.
UTMN 4648239
UTME
743276
DISTRICT Goose Creek
QUAD Nile Spring
7.5' (1989)
RADIOACTIVITY Less than 0.03% eU3O8
reported.
GEOLOGY Two carbonaceous shale beds in the Salt Lake
Formation having an aggregate thickness of 9 feet contain slightly anomalous
amounts of uranium.
RADIOACTIVE MINERALS uranium
HOST
ROCK Sedimentary: Tertiary Salt Lake Formation
MAIN
COMMODITIES U
OLD MAP NO. 155
REFERENCES
Mapel and Hail, 1959; Lapointe and others, 1991; Mason and others, 1996;
Tingley, 1981a,b; Garside, 1973.
NOTES MRDS: M233409; UTMs from
B106
NO. 198
NAME
Locality 39
COUNTY Elko
LOCATION SE¼ SW¼ SW¼
Sec. 7, T47N, R70E
UTMN 4650700
UTME
742900
DISTRICT Goose Creek
QUAD Nile Spring
7.5' (1989)
RADIOACTIVITY Analyses reported are less than 0.03%
eU3O8.
GEOLOGY A measured section in the Tertiary Salt Lake
Formation at this locality includes 5 feet of carbonaceous shale which contains
slightly anomalous amounts of uranium.
RADIOACTIVE MINERALS
uranium
HOST ROCK Sedimentary: Tertiary Salt Lake
Formation
MAIN COMMODITIES U
OLD MAP NO.
154
REFERENCES Mapel and Hail, 1959; Mapel, 1952; Garside,
1973.
NOTES UTMs from center of quarter-quarter-quarter
section.
NO. 199
NAME
Lost Gulch placers, Slate Creek placers, Tennessee Gulch placers
OTHER
NAME May placer(?); Alder Gulch district
COUNTY
Elko
LOCATION T45-46N, R56E; location uncertain
UTMN
4630000
UTME 611000
DISTRICT
Alder
QUAD Tennessee Mountain 7.5' (1986); Coon Creek 7.5'
(1986)
OTHER PRODUCTION Before 1900: Unknown amount of placer
Au
DEVELOPMENT Shafts, prospect pits, and other placer
workings.
GEOLOGY Monazite-bearing placer gravels reported.
Small placer deposits mined in Lost Gulch, Slate Creek, and Tennessee
Gulch.
RADIOACTIVE MINERALS monazite
HOST ROCK
Sedimentary (placer): alluvium
MAIN COMMODITIES Au
OTHER
COMMODITIES Monazite, U(?)
OLD MAP NO.
146
REFERENCES Lovering, 1954; Bentz and others, 1983; Bentz
and Tingley, 1983; Lapointe and others, 1991; Garside, 1973; Johnson,
1978.
NOTES Exact location uncertain, UTMs from near center of
Tennessee Gulch, which is also approximately near the center of the general area
with placer deposits.
NO.
200
NAME Midas area
OTHER NAME Midas mining
district.
COUNTY Elko
LOCATION Sec. 14, T38N,
R46E; Exact location unknown
UTMN 4557500
UTME
521000
QUAD Midas 7.5' (1965); Squaw Valley Ranch 7.5'
(1965)
GEOLOGY Uranium mineralization has been reported from
opalized volcanic beds. Claims for uranium were staked in this area in the
1950s, according to Elko County claim records. However, no radioactive
localities could be found during a 1978 visit.
RADIOACTIVE MINERALS
uranium mineralization
HOST ROCK Volcanic: opalized
volcanic beds
MAIN COMMODITIES U
OLD MAP NO.
162
REFERENCES Engineering and Mining Journal, 1950b, p. 106;
Davis, 1954; Garside, 1973; 1979, 1982.
NOTES Exact location
uncertain, UTMs from near center of Sec. 14. Site is outside of Gold Circle
(Midas) District.
NO. 201
NAME
Mountain City placers
OTHER NAME Mountain City
district
COUNTY Elko
LOCATION Sec. 26, T46N,
R53E, location uncertain
UTMN 4634600
UTME
584200
DISTRICT Mountain City
QUAD Mountain
City 7.5' (1986)
OTHER PRODUCTION 1870-early 1900s: unknown
amount of placer Au
RADIOACTIVITY Radioactivity probably due to
thorium.
GEOLOGY Monazite-bearing placer gravels reported.
According to Carper (1945), two pans of gravel gave a large sample of black sand
which contained 27% magnetite and 73% nonmagnetitic material with 1-2% monazite
and a trace of cinnabar. The source of the gravel is granitic
rocks.
RADIOACTIVE MINERALS monazite
HOST ROCK
Sedimentary (placer): alluvium
MAIN COMMODITIES Au
OTHER
COMMODITIES Monazite, Th(?)
OLD MAP NO.
130
REFERENCES Lovering, 1954; Lapointe and others, 1991; Mason
and others, 1996; Bentz and others, 1983; Bentz and Tingley, 1983; Garside,
1973; Carper, 1945
NOTES MRDS: M233268, UTMs from approximate
center of placer area as noted in Bentz and others (1983) and Bentz and Tingley
(1983).
NO. 202
NAME
Mystery claims
OTHER NAME Mystery John;
Mystery-Joker(?).
COUNTY Elko
LOCATION Sec.
21, T44N, R55E; Possibly in T43N, R55E
UTMN
4616600
UTME 600780
DISTRICT Island
Mountain
QUAD Wild Horse 7.5' (1986)
DEVELOPMENT
Bulldozer trenches and pits.
GEOLOGY Radioactivity
reportedly occurs in rhyolites and tuffs mostly in the Miocene Danger Point
Tuff. The geology may be similar to that at Happy Joe No.1, etc.
HOST
ROCK Volcanic: Miocene Danger Point Tuff
MAIN COMMODITIES
U
OLD MAP NO. 143
REFERENCES D. L.
Hetland, written commun., 1971; Mason and others, 1996; Lapointe and others,
1991; Coats and others, 1984; Garside, 1973.
NOTES MRDS:
M233267; Exact location uncertain, UTMs from prospect at location given in
Garside (1973)
NO. 203
NAME
Occurrence (T40N, R68E)
COUNTY Elko
LOCATION
Center T40N, R68E; west of Montello. Exact location
unknown
UTMN 4580500
UTME
727500
QUAD Montello Canyon 7.5' (1976)
GEOLOGY
Autunite and meta-autunite have been reported from a fault zone in
limestone(?).
RADIOACTIVE MINERALS Autunite;
meta-autunite
HOST ROCK Sedimentary: limestone(?)
MAIN
COMMODITIES U
OLD MAP NO. 160
REFERENCES
Garside, 1973; Castor and Ferdock, 2004.
NOTES Exact
location uncertain, UTMs from near center of Sec. 23.
NO. 204
NAME Oxley
Peak
OTHER NAME Colton Development Co.
COUNTY
Elko
LOCATION SW¼ Sec. 15 and SE¼ Sec. 16, T38N,
R62E
UTMN 4560180
UTME
670720
DISTRICT Wells
QUAD Oxley Peak 7.5'
(1982)
OTHER PRODUCTION Decorative stone
DEVELOPMENT
Bulldozer roads, quarries and shafts (for stone), and 25-30 drill holes
up to 365 m deep (presumably for uranium).
RADIOACTIVITY
Background = 200-250 cps; High = up to 100 times background. One float sample of
fault(?) breccia contained 2,140 ppm U3O8.
GEOLOGY Anomalous
radioactivity is associated with limonite and hematite staining and
silicification in Late Miocene tuffaceous fluvial and lacustrine sandstones and
shales.
HOST ROCK Sedimentary: Miocene tuffaceous sandstone and
siltstone
MAIN COMMODITIES Decorative stone
OTHER
COMMODITIES U
REFERENCES Proffitt and others, 1982,
no. 11; Thorman and others, 2003.
NOTES UTMs based on sketch
map in Proffitt and others (1982, no. 11).
NO.
205
NAME Pink Horse claims
COUNTY
Elko
LOCATION Sec. 32, T44N, R66E
UTMN
4616000
UTME 706000
DISTRICT
Contact
QUAD Texas Spring 7.5' (1968)
RADIOACTIVITY
Background = 0.03 mR/hr; High = 0.15 mR/hr. A select sample contained
0.12% cU3O8.
GEOLOGY Uranium mineralization occurs along
bedding in Tertiary tuffaceous lake sediments. Peterson (1956) reports a uranium
occurrence east of Contact which may be related to a lineation (fault?)
separating Tertiary sedimentary and rhyolitic volcanic rocks.
RADIOACTIVE
MINERALS uranium mineralization
HOST ROCK
Sedimentary: Tertiary tuffaceous lake sediments
MAIN COMMODITIES
U
OLD MAP NO. 152
REFERENCES AEC Report
3405; Peterson, 1956, p. 8; Garside, 1973.
NOTES Exact location
uncertain, UTMs from near center of Sec. 32.
NO.
206
NAME Pot Luck claims
COUNTY
Elko
LOCATION Sec. 33, T44N, R55E; Possibly in T43N,
R55E
UTMN 4612800
UTME
601800
DISTRICT Island Mountain
QUAD Wild
Horse 7.5' (1986)
DEVELOPMENT Bulldozer trenches and
pits.
GEOLOGY Radioactivity reportedly occurs in rhyolites and
tuffs mostly in the Miocene Danger Point Tuff. The geology may be similar to
that at Happy Joe No.1, etc.
HOST ROCK Volcanic: Miocene Danger
Point Tuff
MAIN COMMODITIES U
OLD MAP NO.
143
REFERENCES D. L. Hetland, written commun., 1971; Mason and
others, 1996; Lapointe and others, 1991; Coats and others, 1984; Garside,
1973.
NOTES MRDS: M233267; Exact location uncertain, UTMs from
near center of location given in Garside (1973)
NO. 207
NAME Pride and Last
Chance claims
OTHER NAME Southam claims; Dolly Varden
district.
COUNTY Elko
LOCATION T29N, R66E;
Exact location unknown
UTMN 4472000
UTME
711000
DISTRICT Dolly Varden
QUAD Mizpah Point
7.5' (1982); Sharp Peak 7.5' (1982)
RADIOACTIVITY About 2.5(?)
times background. A sample from a pegmatite dike contained 5.95% Th, 1.5% eU3O8
(0.128% cU3O8) and 0.35% rare earth oxides.
GEOLOGY Slight
radioactivity was reportedly found in shear zones in rhyolite flows and in a
Cretaceous coarse-grained quartz monzonite stock, and in fractures in several
northeast-trending, orthoclase pegmatite dikes. Also, various areas along the
contact of the quartz monzonite stock with Carboniferous shales and limestones
were radioactive. In one area the uranium mineralization is associated with
chrysocolla and iron oxides. Thorium accounts for most of the radioactivity.
Snow (1963) did not find any uranium mineralization during detailed mapping of
this area.
RADIOACTIVE MINERALS Anomalously radioactive
chrysocolla and iron oxides; thorium-bearing rock
HOST ROCK
Volcanic/Intrusive: rhyolite flows; Cretaceous quartz monzonite stock
MAIN
COMMODITIES Th, U
OLD MAP NO.
169
REFERENCES AEC Report 3418; Snow, 1963; Davis, 1954; Olson
and Adams, 1962; Garside, 1973; 1979.
NOTES Location uncertain;
UTMs from near center of township.
NO.
208
NAME Prince claims
COUNTY
Elko
LOCATION E½ Sec. 20, T44N, R66E
(protracted)
UTMN 4617850
UTME
707220
DISTRICT Contact
QUAD Texas Spring 7.5'
(1968)
DEVELOPMENT Bulldozer cuts and trenches and a small
amount of underground workings.
RADIOACTIVITY Background
(Paleozoic rocks) = 125 cps; High = 9500 cps. Assays of 0.3% cU3O8 or greater
are reported across a width of several feet, up to 7% U3O8 reported
locally.
GEOLOGY Anomalous radioactivity and uranium mineral
occurrences are present along fault zones in Permian(?) limestone and sandstone.
Uranophane, renardite, phosphuranylite, and coffinite(?) were recognized at one
locality; however, elsewhere uraniferous limonite-maghemite is the main
radioactive species. Four radioactive localities are reported in a 0.5 square
mile area, associated with northeast- or northwest-trending fault zones which
are hydrothermally altered and leached. The mineralization has not been
investigated at depth. Two alternate hypotheses have been proposed to explain
the mineralization: (1) uranium was leached from tuffaceous and arkosic
conglomeratic sedimentary rocks of the Mio-Pliocene Idavada Fm. or from the
granitic and volcanic source-rocks for this unit. In this model, uranium would
be deposited from uranium-bearing groundwater along fault zones in limestone and
quartzite, either precipitated on amorphous iron-oxides or coprecipitated with
the iron oxide minerals. (2) An alternative hypothesis is that the radioactive
occurrences are oxidized portions of hypogene veins, probably of simple
mineralogy (pyrite-uraninite?).
RADIOACTIVE MINERALS
coffinite(?); phosphuranylite; renardite; uraniferous limonite-maghemite;
uranophane
HOST ROCK Sedimentary: Permian(?) limestone and
sandstone
MAIN COMMODITIES U
OLD MAP NO.
153
REFERENCES AEC Report 3417; Redfern, 1977; Garside, 1973;
1979; Proffitt and others, 1982, no. 10.
NOTES UTMs based on
description in Proffitt and others (1982).
NO.
209
NAME Race Track mine
OTHER NAME
Lucky Lager claims; Speedway claims
COUNTY
Elko
LOCATION Sec. 31, T46N, R53E
UTMN
4631100
UTME 587500
DISTRICT Mountain
City
QUAD Mountain City 7.5' (1986)
U PRODUCTION
1958: Reported 100-ton trial shipment. Proffitt and others (1980): 9,866
lbs. 0.24% U3O8
DEVELOPMENT One small pit, several bulldozer
trenches, and at least two drill holes.
RADIOACTIVITY
Background = 120 cps, High = 1200 to 1500 cps. An ore sample reportedly from the
Racetrack mine contained 0.755% U3O8. Five select samples ranged between 7 and
882 ppm U3O8.
GEOLOGY Anomalous radioactivity occurs along a
shear zone separating Tertiary volcanic rocks from Cretaceous quartz monzonite.
The radioactivity was discernable for more than 200 feet along a 15-foot-wide
zone. Mineralization was probably controlled by a low or channel which directed
uranium-bearing water through carbonaceous devitrified tuff (clay). Later,
remobilization or precipitation of uranium occurred when faulting provided new
zones of porosity and maybe isolated the channel(?) from its original hydraulic
system. Most of the minerals are autunite, which is disseminated along the shear
zones. Torbernite and meta-torbernite were also reported.
RADIOACTIVE
MINERALS Autunite; meta-torbernite; torbernite
HOST ROCK
Volcanic/Intrusive: Tertiary volcanic rocks, Cretaceous Mountain City
quartz monzonite stock
MAIN COMMODITIES U
OLD MAP NO.
134
REFERENCES AEC Report 3428; U.S. Bureau of Mines
Minerals Yearbook, 1958; Butler, 1958, p. 127; Lapointe and others, 1991; Mason
and others, 1996; Bentz and others, 1983; Bentz and Tingley, 1983; Proffitt and
others, 1982; Garside, 1973; Gallagher, 1958.
NOTES MRDS:
M233365, UTMs from location according to directions in Proffitt and others
(1982).
NO. 210
NAME Rim
Rock mine
OTHER NAME Rimrock mine.
COUNTY
Elko
LOCATION SW¼ Sec. 25, T46N, R54E
(protracted)
UTMN 4632400
UTME
594740
DISTRICT Mountain City
QUAD Merritt
Mountain 7.5' (1986)
U PRODUCTION 1960: Less than 500 tons of
uranium ore containing 4,240 lbs of U3O8.
DEVELOPMENT Open pit
operated by the Bogdanich Development Co.
RADIOACTIVITY
Radioactivity = 2 to 15 times background. Dump sample of arkose and volcanic
rocks: 99 ppm U3O8, 5 samples of tuff ranged 6-10 ppm U3O8.
GEOLOGY
Autunite is reported from Tertiary arkosic sedimentary rocks and ash-flow
and airfall tuffs that were deposited in a paleochannel in Cretaceous quartz
monzonite.
RADIOACTIVE MINERALS Autunite
HOST ROCK
Sedimentary/Volcanic: Tertiary arkosic sedimentary and ash-flow and
airfall tuffs
MAIN COMMODITIES U
OLD MAP NO.
139
REFERENCES U.S. Bur. Mines Minerals Yearbook, 1960; D.L.
Hetland, written commun., 1971;Lapointe and others, 1991; Mason and others,
1996; Bentz and others, 1983; Bentz and Tingley, 1983; Proffitt and others,
1982; Garside, 1973.
NOTES MRDS: M234131, Location from map and
directions in Proffitt and others (1982) and workings on air photos.
NO. 211
NAME Semsco
property
COUNTY Elko
LOCATION Secs. 3 and 4,
T44N, R63E
UTMN 4622000
UTME
680000
DISTRICT Contact
QUAD Henry 7.5'
(1982)
DEVELOPMENT Old workings for copper and precious
metals.
RADIOACTIVITY Background = 0.01 mR/hr; High = 0.15
mR/hr.
GEOLOGY Anomalous radioactivity is associated with
oxidized copper-bearing veins in Carboniferous limestone and Cretaceous(?)
granodiorite.
RADIOACTIVE MINERALS Anomalously radioactive
copper minerals
HOST ROCK Sedimentary/Intrusive: Carboniferous
limestone; Cretaceous(?) granodiorite.
MAIN COMMODITIES
Cu
OTHER COMMODITIES U(?)
OLD MAP NO.
148
REFERENCES AEC Report 3406; Garside, 1973.
NOTES
Exact location uncertain, UTMs from near center of two sections.
NO. 212
NAME South Fork
claims (Nos. 1 and 2), Pixley No.1 claims
OTHER NAME East and
South Fork; California Creek Uranium prospect; Arimex Resources property; Pixley
pit.
COUNTY Elko
LOCATION Center E½ Sec. 35,
T46N, R54E (protracted). Between Pixley Creek and Negro George
Draw.
UTMN 4631680
UTME
595730
DISTRICT Mountain City
QUAD Merritt
Mountain 7.5' (1986)
U PRODUCTION 1960-1961: Less than 2000
tons of uranium ore.
DEVELOPMENT Open pit and several thousand
feet of rotary drilling operated by Valley Engineering
RADIOACTIVITY
Over 2% U3O8 reported in some thin zones. Six select samples ranging
162-1532 ppm U3O8.
GEOLOGY Autunite and minor uraninite,
carnotite, torbernite, and renardite occur in fractures and with pyritiferous
coalified wood at the base of a sequence of andesitic and dacitic welded tuffs.
The deposit is localized in fluvial channels and depressions cut in Cretaceous
quartz monzonite which underlies the welded tuffs. The fluvial rocks which fill
these depressions are arkosic, conglomeratic granite wash and montmorillonitic
tuff and tuff-breccia. Mineralized rock is bleached and hematite-stained, and
reaches a maximum thickness of 80 feet; grades exceed 2% in some thin zones.
Vanadium, zinc, copper, molybdenum, nickel, and cobalt are anomalously abundant.
Post mineral normal faults have modified some deposits. The possible source
rocks include the Cretaceous quartz monzonite and Tertiary volcanic rocks.
Uraniferous solutions may have migrated along the quartz
monzonite-volcaniclastic rock nonconformity and deposited uranium by reduction
near carbonaceous material or by adsorption on
montmorillonite.
RADIOACTIVE MINERALS Autunite; carnotite;
renardite; torbernite; uraninite
HOST ROCK Sedimentary: Fluvial
channels and depressions
MAIN COMMODITIES U
OLD MAP
NO. 140
REFERENCES U.S. Atomic Energy Commission,
unpublished map;U.S Bureau of Mines Minerals Yearbook, 1960; D. L. Hetland,
written commun., 1971; Birkholz, 1978; Lapointe and others, 1991; Mason and
others, 1996; Bentz and others, 1983; Bentz and Tingley, 1983; Proffitt and
others, 1982; Garside, 1973; Gallagher, 1961; Castor and Ferdock, 2004; Sheehan,
1978, p. 80-83; Ebisch, 2005
NOTES MRDS: M233367
NO. 213
NAME Tag, Pam, Pat, and
Sam claims, DWG (Last Chance) group (Nos. 1-3)
OTHER NAME Lucky
Strike No. 0; Anomaly No.2.
COUNTY Elko
LOCATION
Sec. 5, T45N, R54E (protracted). Turn east on graded road 1.25 miles
south of Mountain City, go 2.5 miles to prospect. Trenches along both sides of
the road north of Quartzite Hill.
UTMN 4630500
UTME
590440
DISTRICT Mountain City
QUAD
Mountain City 7.5' (1986)
DEVELOPMENT Two bulldozer cuts and a
300-foot inclined shaft filled with water to within 25 feet of the
surface.
RADIOACTIVITY Background = 0.03 mR/hr, High = 1.5
mR/hr, analyses of up to 0.25% cU3O8 reported, Quartz monzonite sample: 10 ppm
U3O8, arkosic dump sample: 22 ppm U3O8, carbonaceous clay sample: 750 ppm
U3O8.
GEOLOGY Radioactivity is present along more than 400 feet
of exposed contact of the Cretaceous Mountain City quartz monzonite stock with
the basal zone of a rhyolitic air-fall tuff below a black, vitrophyric,
andesitic welded tuff called the pyroxene andesite of Russell Gulch (Eocene or
older). Autunite is concentrated in a 2- to 3-inch-thick bentonitic zone just
above a thin charcoal layer. Weaker uranium mineralization extends downward to
the weathered quartz monzonite 1 foot below, and for over 1 foot above, into the
unwelded basal zone of the tuff. A carbonized log with minor autunite was
reported from 60 feet underground. In 1968 the Lucky Strike No. 0 claim was
located near the road along California Creek (L.J. Garside, unpub.
data).
RADIOACTIVE MINERALS Autunite
HOST ROCK
Volcanic/Intrusive: Eocene(?) Andesite of Russell Gulch, Cretaceous Mountain
City quartz monzonite stock
MAIN COMMODITIES U
OLD MAP
NO. 135
REFERENCES Coats, 1964; AEC Report 3432;
Coats, 1968; Peterson, 1956; Lapointe and others, 1991; Mason and others, 1996;
Bentz and others, 1983; Bentz and Tingley, 1983; Proffitt and others, 1982;
Garside, 1973.
NOTES MRDS: M233368
NO. 214
NAME Threemile
Spring
COUNTY Elko
LOCATION SE¼ Sec. 20, T38N,
R62E
UTMN 4558480
UTME
669060
DISTRICT Wells
QUAD Oxley Peak 7.5'
(1982)
RADIOACTIVITY Spring travertine is 4-25 times
background.
GEOLOGY The travertine mound at this warm (54ºC)
spring is anomalously radioactive (4-25 times background), but contained only 4
ppm U3O8.
HOST ROCK Spring travertine
REFERENCES
Proffitt and others, 1982.
NOTES
NO. 215
NAME Toana Range
rhyolite
COUNTY Elko
LOCATION Secs. 24, 25,
26, T37N, R67E and Secs. 1, 12, 13, T36N, R67E
UTMN
4545500
UTME 723500
QUAD Cobre SE 7.5'
(1967)
DEVELOPMENT Drilling by Nuclear Dynamics reported (oral
commun. 1976)
RADIOACTIVITY Anomalous amounts of U (46 ppm) and
Th (87 ppm)
GEOLOGY A topaz rhyolite intrusion that crops out
over nearly 25 km2 contains anomalous amounts of U (46 ppm) and Th (87 ppm). A
much smaller body is exposed about 2 km east of the main mass, in Sec. 4, T37N,
R68E. The rhyolite bodies have been detected in airborne radioactivity surveys.
They contain very smoky quartz, which probably owes its darkening to radiation
damage.
HOST ROCK Intrusive: rhyolite intrusives
MAIN
COMMODITIES U, Th
REFERENCES Price and others,
1992
NOTES UTM location centered on the main mass of rhyolite.
NO. 216
NAME Top
claims
COUNTY Elko
LOCATION Sec. 15, T45N,
R54E (unsurveyed).
UTMN 4627500
UTME
593800
DISTRICT Mountain City
QUAD Merritt
Mountain 7.5' (1986)
GEOLOGY Claims are mostly over
biotite-hypersthene pheonodacite tuff of the Oligocene(?) Bieroth Andesite of
Bushnell (1967).
HOST ROCK Volcanic: Oligocene(?) Bieroth
Andesite
MAIN COMMODITIES U
OLD MAP NO.
141
REFERENCES D. L. Hetland, written commun., 1971; Mason and
others, 1996; Bentz and others, 1983; Bentz and Tingley, 1983; Coats and others,
1984; Garside, 1973.
NOTES MRDS: M234129; UTMs from MRDS and
mark the approximate center of the claim block.
NO. 217
NAME Tumbee
property
COUNTY Elko
LOCATION Sec. 19, T29N,
R62E (protracted)
UTMN 4471620
UTME
667670
DISTRICT Delker
QUAD Delcer Buttes 7.5'
(1984)
DEVELOPMENT Numerous workings (for
copper).
RADIOACTIVITY Background = 75-200 cps; High = 500 cps.
A sample from the most radioactive area contained 281 ppm
U3O8.
GEOLOGY Anomalous radioactivity and uranium values are
found in Paleozoic carbonate rocks that are silicated by an adjacent Jurassic(?)
quartz monzonite stock. Copper skarn mineralization is developed in the
carbonate rocks; gold mineralization is found locally. Uranium may be
concentrated, in part, in limonite derived by oxidation of pyrite and other
sulfide minerals. The stock is anomalous in uranium (5.4 ppm U3O8).
HOST
ROCK Igneous: Skarn mineralization
MAIN COMMODITIES
Cu, Au
OTHER COMMODITIES U
OLD MAP NO.
168
REFERENCES U.S. Atomic Energy Comm., unpublished map; Mason
and others, 1996; Lapointe and others, 1991; Garside, 1973; Percival and Bright,
1982, no. 3.
NOTES MRDS: M234116; UTMs from sample site MEY-075
(Percival and Bright, 1982).
NO.
218
NAME West Butte
COUNTY
Elko
LOCATION Sec. 17, T29N, R62E (protracted)
UTMN
4473370
UTME 668325
DISTRICT
Delker
QUAD Delcer Buttes 7.5' (1984)
DEVELOPMENT
Numerous workings (for copper).
RADIOACTIVITY Up to 5-8
times background; highest 350 cps. The highest analysis was 510 ppm
U3O8.
GEOLOGY Anomalous radioactivity is associated with
limonite along high-angle shear zones in silicated and marbleized Paleozoic
carbonate rocks. The adjacent Jurassic(?) quartz monzonite stock is anomalous in
uranium (5.4 ppm U3O8). Sulfide minerals are rare, but limonite probably
represent s their oxidized equivalent.
HOST ROCK Igneous: Skarn
mineralization
MAIN COMMODITIES Cu
OTHER COMMODITIES
U
REFERENCES Lapointe and others, 1991; Garside, 1973;
Percival and Bright, 1982, no. 5.
NOTES UTMs from Percival and
Bright, 1982, no. 5.
NO.
219
NAME White Hill No.1 claim
OTHER NAME Opal
claims; Opal Annex claims
COUNTY Elko
LOCATION
Sec. 34, T32N, R56E
UTMN 4496380
UTME
614160
QUAD West of Lee 7.5' (1990)
DEVELOPMENT
Several bulldozer cuts and 2 short adits.
RADIOACTIVITY
Background = 0.07 mR/hr; High = 0.12 mR/hr. Up to 10 times background. Analyses
to 270 ppm U3O8.
GEOLOGY Weak radioactivity occurs in opalized
zones containing a little carbon trash. Iron and manganese oxides are present.
The rocks are part of the lacustrine and fluviatile late Tertiary Humboldt
Formation.
RADIOACTIVE MINERALS Anomalously radioactive
opalized zones
HOST ROCK Sedimentary: Tertiary Humboldt
Formation
MAIN COMMODITIES U
NBMG SAMPLE
464
OLD MAP NO. 167
REFERENCES AEC Report
3433; Mason and others, 1996; Lapointe and others, 1991; Bentz and others, 1983;
Bentz and Tingley, 1983; Garside, 1973. Percival and Bright, 1982, no.
1.
NOTES MRDS: M234116; UTMs from prospect symbol on
topographic map.
NO. 220
NAME
White Rock Canyon prospects
OTHER NAME White Rock
Canyon
COUNTY Elko
LOCATION SE¼ Sec. 19, T44N,
R52E
UTMN 4615840
UTME
569100
DISTRICT Edgemont
QUAD Bull Run
Reservoir 7.5' (1987)
DEVELOPMENT Prospect
pits
RADIOACTIVITY Two to three times
background.
GEOLOGY Several uranium prospects have been
reported along the southwestern border of the White Rock stock and along the
arcuate fault separating the Porter Peak Limestone and Prospect Mountain
Quartzite south of the intrusive contact (Decker, 1962). Abundant gossan is
reported from the radioactive areas, but no uranium minerals were recognized. A
small amount of radioactive (5-6 times background) gossan was noted on the dump
of the Nevada Mine (NE¼ Sec. 19, T44N, R52E; Garside, 1980). The Hot Rock claims
(located 1954), located 1,500 feet northeast of the Nevada Zinc Mine could be
for uranium (Elko County Recorders Files, Book 2, page 147).
HOST ROCK
Sedimentary/Intrusive: Porter Peak Limestone; Prospect Mountain
Quartzite; White Rock stock
MAIN COMMODITIES U(?)
OLD MAP
NO. 159
REFERENCES Decker, 1962, p. 56; Mason and
others, 1996; Lapointe and others, 1991; Bentz and others, 1983; Bentz and
Tingley, 1983; Garside, 1973; Garside, 1982b.
NOTES MRDS:
M029082; UTMs from location on map in Bentz and others (1983) and Bentz and
Tingley (1983). Garside (1973) places site in SW¼.
NO. 221
NAME 16 to 1
claim
OTHER NAME 16 to 1 mine; Sixteen-to-One mine; Hidalgo;
Desert Eagle
COUNTY Esmeralda
LOCATION S½ Sec.
32, T2S, R38E
UTMN 4174370
UTME
430860
DISTRICT Red Mountain
QUAD Mohawk Mine
7.5' (1987)
OTHER PRODUCTION 1982-1986; 1990-1995: 5,150,441 oz
Ag; 1993-1994: 1,596,674 lbs. Cu, 1,061,408 lbs. Sb
DEVELOPMENT
One shaft and several adits.
RADIOACTIVITY Abnormal background
readings up to 0.05 mR/hr were reported.
GEOLOGY Slight
radioactivity is reported from one prospect, which is located on a quartz vein
cutting an altered tuff.
HOST ROCK Volcanic: altered
tuff.
MAIN COMMODITIES Ag, Cu, Sb
OTHER COMMODITIES
Au, Pb, U(?), Zn
NBMG SAMPLE 2602
OLD MAP NO.
203
REFERENCES AEC Report 3448; Albers and Stewart,
1972; Smith and Tingley, 1983; Smith and others, 1983; Mason and others, 1996;
Garside, 1973.
NOTES MRDS: M241976; Location of specific
prospect uncertain; UTMs from 16 to 1 Mine which was a silver mine.
NO. 222
NAME Aching Back, Blue
Moon, Rosamunda, Topnotch and Happy Day claims
COUNTY
Esmeralda
LOCATION Sec. 8(?) or Sec. 9(?), T1N, R35E; Exact
location uncertain
UTMN 4201300
UTME
403800
DISTRICT Fish Lake Valley
QUAD Volcanic
Hills East 7.5' (1987)
RADIOACTIVITY Background = 0.035 mR/hr;
High= 0.085 mR/hr
GEOLOGY Slight radioactivity reported from
these claims may be associated with petrified wood in Tertiary sandstone and
conglomerate.
HOST ROCK Sedimentary: Tertiary sandstone and
conglomerate
MAIN COMMODITIES U(?)
OLD MAP NO.
174
REFERENCES AEC Report 3463; Garside, 1973.
NOTES
Location uncertain; UTMs from near center of two sections.
NO. 223
NAME Anniversary
claim
COUNTY Esmeralda
LOCATION Sec. 2 or 3,
T1N, R36E; Exact location uncertain
UTMN 4202700
UTME
416600
DISTRICT Coaldale
QUAD Rhyolite
Ridge NW 7.5' (1987)
DEVELOPMENT A small
pit.
RADIOACTIVITY Background = 0.013 mR/hr; High = 0.045
mR/hr. A 3-foot chip sample ran 0.01% eU3O8.
GEOLOGY Very
slight radioactivity has been reported from highly folded and brecciated
limestone and shale(?) in the Ordovician Palmetto Formation.
HOST ROCK
Sedimentary: Ordovician Palmetto Formation
MAIN COMMODITIES
U
OLD MAP NO. 179
REFERENCES AEC Report
3444; Mason and others, 1996; Garside, 1973.
NOTES MRDS:
M242030; UTMs from MRDS.
NO.
224
NAME Anomaly No.6
OTHER NAME W. Kohlmoos
and others
COUNTY Esmeralda
LOCATION Sec.
14(?), T5N, R38E; (unsurveyed). Projected from the east
UTMN
4238200
UTME 441200
QUAD Outlaw Springs 7.5'
(1980)
RADIOACTIVITY Background = 0.02 mR/hr; High = 3.5
mR/hr(?).
GEOLOGY Abnormal radioactivity (reportedly 2 to 3
times background) occurs along vertical, north trending fractures in a Tertiary
conglomerate. The conglomerate is well cemented with silica, and is
fossiliferous.
HOST ROCK Sedimentary: Tertiary
conglomerate
MAIN COMMODITIES U(?)
OLD MAP NO.
173
REFERENCES AEC Report 3645; Meehan, Sharp, and Mallory,
1956; Garside, 1973.
NOTES Location uncertain; UTMs from near
center of Sec. 14.
NO. 225
NAME
Bernice Anderson property
COUNTY
Esmeralda
LOCATION Sec. 3(?), T2N, R42E; Exact location
unknown
UTMN 4212000
UTME
478300
DISTRICT Tonopah
QUAD Mount Butte 7.5'
(1987); Tonopah 7.5' (1982)
RADIOACTIVITY Background = 0.07
mR/hr; High = 0.27 mR/hr. A n area of about 100 square feet registered 0.15
mR/hr
GEOLOGY Anomalous radioactivity is reported from
tuffaceous lakebeds of the Siebert Tuff. This locality could not be located in
1969 and 1970.
HOST ROCK Sedimentary: tuffaceous lakebeds of
the Siebert Tuff
MAIN COMMODITIES U
OLD MAP NO.
356
REFERENCES AEC Report 3646; Mason and others, 1996;
Garside, 1973.
NOTES MRDS: M233634; Exact location uncertain;
UTMs from near center of Sec. 3.
NO.
226
NAME Bullet Placer No.1 claim
COUNTY
Esmeralda
LOCATION SW¼ SW¼ SW¼ Sec. 28, T2 N,
R36E
UTMN 4205290
UTME
413520
DISTRICT Coaldale
QUAD Rhyolite Ridge
NW 7.5' (1987)
DEVELOPMENT Numerous bulldozer
cuts.
RADIOACTIVITY Background = 0.015 mR/hr; High= 0.16
mR/hr
GEOLOGY Anomalous radioactivity occurs around a spring.
The highest radioactivity was found over the spring itself, and in windblown
sand nearby. However, areas of alluvium within 100 feet of the spring are up to
two to three times background. Outcrops of Tertiary lacustrine mudstones and
calcareous spring deposits are not radioactive. An older Tertiary quartz latite
hypabyssal intrusion crops out in the vicinity, but no anomalous radioactivity
was noted in this unit. Radioactivity may possibly be due to gamma-emitting
decay products of radon in the spring water.
RADIOACTIVE MINERALS
radon dissolved in water
HOST ROCK Sedimentary: alluvium
and spring
MAIN COMMODITIES U(?)
OLD MAP NO.
175
REFERENCES Mason and others, 1996; Smith and Tingley, 1983;
Smith and others, 1983; Garside, 1973.
NOTES MRDS: M242051;
UTMs from spring.
NO. 227
NAME
Can't Miss group (23 claims)
COUNTY
Esmeralda
LOCATION NW¼ Sec. 19, T5N, R38E
(protracted)
UTMN 4236840
UTME
440000
QUAD Outlaw Springs 7.5' (1980)
DEVELOPMENT
Three trenches.
RADIOACTIVITY Background = 0.04 mR/hr;
High = 0.22 mR/hr. A 1.5-foot chip sample contained 0.06% eU3O8.Other samples up
to 324 ppm U3O8.
GEOLOGY Uranium and anomalous radioactivity
are associated with iron-oxide and clay minerals in brecciated areas that are
near a apparent fault between Tertiary ash-flow tuff and lacustrine sedimentary
rocks.
HOST ROCK Volcanic: Tertiary welded tuff
MAIN
COMMODITIES U(?)
OLD MAP NO.
172
REFERENCES AEC Report 3435; Albers and Stewart, 1972;
Garside, 1973; Hurley and Parker, 1982, no. 2.
NOTES Section
projected from Tonopah 1:100,000 sheet.
NO.
228
NAME Checkmate No.1 claim
OTHER NAME
Checkmate prospect
COUNTY Esmeralda
LOCATION
Sec. 24(?), T7S, R41.5E; 37°18'14” North latitude, 117°20'50” west
longitude; at pass in Slate Ridge, 3.5 miles southeast of Gold Point. Probably
at adit symbol on Gold Point 7.5' sheet.
UTMN
4128180
UTME 469920
DISTRICT
Tokop
QUAD Gold Point 7.5' (1968)
DEVELOPMENT
Old 30-foot adit and caved shaft
RADIOACTIVITY Background =
0.05 mR/hr; High = 0.5 mR/hr. Samples contain from 0.013 to 0.136% eU3O8 (0.144
cU3O8).
GEOLOGY An oxidized “iron dike” reportedly cuts
limestone, and is radioactive along the footwall side. The limestone is probably
in the Precambrian Wyman Formation.
RADIOACTIVE MINERALS
Anomalously radioactive iron oxides(?)
HOST ROCK
Intrusive/Sedimentary: ”iron dike”; Precambrian Wyman Formation
MAIN
COMMODITIES Fe, U
OLD MAP NO.
193
REFERENCES Smith and Tingley, 1983; Smith and others, 1983;
Mason and others, 1996; Albers and Stewart, 1972; Garside, 1973.
NOTES
MRDS: M241922; UTMs from point noted in Smith and others (1983) and
Smith and Tingley (1983).
NO.
229
NAME Coaldale prospect, Phillips and Wentland No.1
claims
OTHER NAME Young-Critchlow property(?)
COUNTY
Esmeralda
LOCATION NW¼ SE¼ Sec. 33, T2N,
R37E
UTMN 4204260
UTME
424100
DISTRICT Coaldale
QUAD Rhyolite Ridge
NE 7.5' (1987)
U RESOURCES/ RESERVES 1952: Estimated 50 tons of
indicated and inferred ore averaging 0.25% cU3O8, 350 tons averaging 0.025%, and
perhaps 67,000 tons averaging 0.005% cU3O8. These reserves were calculated to a
depth of 50 feet (Duncan, 1952a).
RADIOACTIVITY Background =
0.05 mR/hr; High = 0.15+ mR/hr; samples collected from weathered outcrops
contained from 0.02 to 2.20% cU3O8.
GEOLOGY Uranium
mineralization occurs in a rhyolitic welded tuff near a fault contact with
younger Tertiary fluviatile and lacustrine rocks. A normal sedimentary contact
is present just east of the prospect. The area of mineralization is 400 feet
long and up to 200 feet wide. Uranium is irregularly disseminated in siliceous
veinlets, in a siliceous breccia pipe, along limonite stained joint surfaces,
and as incrustations and cavity fillings of autunite, meta-autunite, and
phosphuranylite. Veinlets and limonite coatings contain up to 0.31% U3O8. Except
for samples containing visible secondary uranium minerals, chemical assays are
about 10 to 20% lower than radiometric analyses. Nearby lignite beds in the
sedimentary rocks are not uraniferous.
RADIOACTIVE MINERALS
Autunite; meta-autunite; phosphuranylite
HOST ROCK Volcanic:
rhyolitic welded tuff
MAIN COMMODITIES U
NBMG SAMPLE
459
OLD MAP NO. 181
REFERENCES Duncan,
1953c; Sharp, 1956; Duncan 1952a; Moore and Stephens, 1954; McKelvey, 1957; AEC
Report 3453; Davis, 1954, p. 6, 8; Cupp and others, 1977b; Mason and others,
1996; Albers and Stewart, 1972; Smith and Tingley, 1983; Smith and others, 1983;
Garside, 1973; 1979; Waters, 1955; Castor and Ferdock, 2004.
NOTES
MRDS: M242291
NO.
230
NAME Copper Queen group
OTHER NAME
Huntley-Daniel property
COUNTY Esmeralda
LOCATION
Sec. 1, T4N, R39E (protracted)
UTMN
4231920
UTME 452720
DISTRICT Crow
Springs
QUAD Crow Springs 7.5' (1968)
DEVELOPMENT
An inaccessible 65-foot-deep shaft plus several small pits (workings for
copper, lead, and silver).
RADIOACTIVITY 0.05 mR/hr; High =
0.225 mR/hr. A 6-inch channel sample contained 0.024% eU3O8. A quartz vein with
chrysocolla contained 47 ppm U3O8.
GEOLOGY Copper, lead, and
silver mineralization is reported from quartz veins which cut granitic intrusive
rock. The anomalous radioactivity occurs in a pit where a 6-inch quartz vein is
exposed.
HOST ROCK Intrusive: granitic intrusive
rock
MAIN COMMODITIES Ag, Cu, Pb, U
OLD MAP NO.
198
REFERENCES AEC Report 3451; Smith and Tingley, 1983;
Smith and others, 1983; Mason and others, 1996; Garside, 1973; Archbold, 1963;
Hurley and Parker, 1982, no. 3.
NOTES MRDS: M241841
NO. 231
NAME Esmeralda Uranium
prospect
OTHER NAME Esmeralda Uranium No. 28; Esmeralda No. 15;
Uno No.6; Buckeye No.1; Eds No.5; M and R No.6; Minnis No. 50
COUNTY
Esmeralda
LOCATION SW¼ Sec. 25 and NW¼ Sec. 36, T4S,
R38E
UTMN 4156590
UTME
436880
DISTRICT Windypah
QUAD Lida Wash SW
7.5' (1987)
DEVELOPMENT Prospect pits.
RADIOACTIVITY
Background = 0.04 mR/hr; High = 0.40 mR/hr
GEOLOGY
Radioactivity occurs sporadically along seams up to 6 inches thick in a series
of interbedded tuffaceous and sandy lacustrine beds. The most intense
radioactivity occurs along a 6-inch band of buff colored tuff in a
medium-grained, well cemented sandstone. Autunite, meta-autunite, and an
unidentified yellow earthy uranium mineral are scattered throughout the tuff for
an exposed distance of 21 feet. The lakebeds strike N50ºE, dip 55ºSE, and appear
to be interbedded with a series of massive lava flows.
RADIOACTIVE
MINERALS Autunite; meta-autunite; unidentified yellow earthy uranium
mineral
HOST ROCK Sedimentary: Tertiary lacustrine
sediments
MAIN COMMODITIES U
OLD MAP NO.
206
REFERENCES AEC Report 3440; Finch, 1967; Smith and Tingley,
1983; Smith and others, 1983; Mason and others, 1996; Garside, 1973: Castor and
Ferdock, 2004.
NOTES MRDS: M242015
NO. 232
NAME Galena claims (Nos.
1 and 2)
COUNTY Esmeralda
LOCATION Sec. 35(?),
T4S, R40E; Exact location uncertain
UTMN 4255800
UTME
454700
DISTRICT Railroad Springs
QUAD
Lida Wash 7.5' (1987)
DEVELOPMENT Two adits, drifts, and
surface trenches.
RADIOACTIVITY Background = 0.02 mR/hr; High =
0.075 mR/hr
GEOLOGY A prospect on the north slope of the Silver
Peak Range is reportedly slightly radioactive. The workings are on a
galena-bearing quartz vein. The radioactive area occurs in a gouge zone along
the east (hanging wall) side of the vein. Most of Section 35 is underlain by the
Cambrian Campito and Harkless Formations.
HOST ROCK
Sedimentary: Cambrian Campito and Harkless Formations
MAIN COMMODITIES
Pb, U
OLD MAP NO. 207
REFERENCES AEC
Report 3450; Smith and Tingley, 1983; Smith and others, 1983; Mason and others,
1996; Garside, 1973; Albers and Stewart, 1972
NOTES MRDS:
M241997; Exact location uncertain; UTMs from the center of Sec. 35
NO. 233
NAME Gap Spring
occurrence
COUNTY Esmeralda
LOCATION SW¼ SE¼
Sec. 32, T2N, R36E
UTMN 4203780
UTME
412760
DISTRICT Coaldale
QUAD Rhyolite Ridge
NW 7.5' (1987)
DEVELOPMENT A few nearby bulldozer
cuts.
RADIOACTIVITY Background = 0.013 mR/hr; High = 0.07
mR/hr. Water contains 4.5 ug/L U.
GEOLOGY A small spot of
several square feet at the outlet of Gap Spring is slightly radioactive. The
area surrounding the spring is lacustrine tufa deposit. The tufa itself is not
usually radioactive, but an area of running water has the highest radioactivity.
The water may contain radon, but no analysis was made.
RADIOACTIVE
MINERALS Anomalously radioactive tufa
HOST ROCK
Sedimentary(?): tufa; spring water
MAIN COMMODITIES U
OLD
MAP NO. 176
REFERENCES Mason and others, 1996;
Garside and Schilling, 1979; Garside, 1973; Felmlee and Cadigan,
1978.
NOTES MRDS: M242033; UTMs from spring.
NO. 234
NAME Gap Strike group
(21 claims), Sammy group (2 claims), and Wolf group (8 claims)
COUNTY
Esmeralda
LOCATION Secs. 3 and 10(?), T1N,
R36E
UTMN 4201600
UTME
415700
DISTRICT Coaldale
QUAD Rhyolite Ridge
NW 7.5' (1987)
DEVELOPMENT A small
trench.
RADIOACTIVITY Background = 0.025 mR/hr; High = 0.40
mR/hr. A 3-foot chip sample contained 0.02% eU3O8.
GEOLOGY
Autunite, meta-autunite, and minor carnotite are disseminated in lacustrine
tuffs and poorly consolidated ferruginous sandstone.
RADIOACTIVE
MINERALS Autunite; carnotite; meta-autunite
HOST ROCK
Sedimentary: lacustrine tuffs and sandstone
MAIN COMMODITIES
U
OLD MAP NO. 180
REFERENCES AEC Report
3456; Finch, 1967; Mason and others, 1996; Albers and Stewart, 1972; Garside,
1973; Castor and Ferdock, 2004.
NOTES MRDS: M242032; UTMs from
MRDS.
NO. 235
NAME Greens
Camp
OTHER NAME Atlas; Moonstone; Moonstone Annex; and Ajax
No.1 claims; Green's Pride Group
COUNTY
Esmeralda
LOCATION Sec. 12(?), T7S, R41E; (Greens Camp is in
Sec. 13).
UTMN 4131360
UTME
465400
DISTRICT Gold Point
QUAD Gold Point SW
7.5' (1968)
DEVELOPMENT Several pits and trenches and an
inaccessible shaft.
RADIOACTIVITY Background = 0.025 mR/hr;
High = 0.08 mR/hr
GEOLOGY Anomalous radioactivity is reported
in quartz veins which cut a granitic intrusive. Copper, lead, and zinc minerals
are present.
HOST ROCK Intrusive: granitic intrusion
MAIN
COMMODITIES Cu, Pb, U, Zn
OTHER COMMODITIES Ag,
Au
OLD MAP NO. 192
REFERENCES AEC Report 3454;
Smith and Tingley, 1983; Smith and others, 1983; Mason and others, 1996;
Garside, 1973.
NOTES MRDS: M241917
NO. 236
NAME Hombre
claims
OTHER NAME Sierra del Rio Nuclear
COUNTY
Esmeralda
LOCATION Sec. 6, T1N, R37E
UTMN
4202390
UTME 421340
DISTRICT
Coaldale
QUAD Rhyolite Ridge NW 7.5'
(1987)
DEVELOPMENT Over 5 km of drill roads, 7 or more rotary
drill holes.
RADIOACTIVITY Background = 100 cps; High = 500
cps.
GEOLOGY Anomalous radioactivity is associated with
northeast or east-west-trending zones of narrow, chalcedonic veinlets and
silicification in rhyolitic ash-flow tuffs. Most of these anomalous areas were
apparently located and drilled, as they are adjacent to drill pads. The most
prominent mineralized features are two sub-parallel veins with trends N60ºE and
N80ºE, and are near vertical. There is no noticeable radioactivity associated
with these veins, however, it is rumored that they are anomalous in Mo and
possibly other elements. The veins are a combination of chalcedonic vein
material and silicified rhyolite tuff (with narrow veinlets that parallel the
zone). The chalcedony is white to black, or pinkish and locally contains iron-
and manganese-oxide minerals. Near horizontal veins exhibit crustification
textures. Some zones of pebble dikes (hydrothermal breccias with rounded
fragments were observed in the vein zone. A veinlet of alunite(?) and a
mineralized area containing an unidentified zeolite with radiating white
crystals were found.
RADIOACTIVE MINERALS unknown uranium
mineral
HOST ROCK Volcanic: rhyolite ash flow tuff
MAIN
COMMODITIES Mo, U
OTHER COMMODITIES Barite,
zeolite
NBMG SAMPLE 462, 463
REFERENCES Mason
and others, 1996; ; Smith and Tingley, 1983; Smith and others, 1983; Garside,
1982a.
NOTES MRDS: M242292
NO.
237
NAME Independence group (Nos. 1-6)
COUNTY
Esmeralda
LOCATION Sec. 18, T8S, R42E; 37°14'N,
117°19'W; Willow Spring area(?), south side of Gold Mountain. Location
uncertain.
UTMN 4121320
UTME
472240
DISTRICT Tokop
QUAD Gold Mountain 7.5'
(1988)
DEVELOPMENT Old workings for gold and silver. 750 feet
of adit, plus other adits, shafts, and pits.
RADIOACTIVITY
Background = 0.04 mR/hr; High = 0.40 mR/hr
GEOLOGY
Radioactivity is reported from gouge zones along faults in limestone of the
Precambrian Wyman Formation. Iron oxides and copper carbonates are also
present.
HOST ROCK Sedimentary: Precambrian Wyman
Formation
MAIN COMMODITIES Ag, Au
OTHER COMMODITIES
Cu, U(?)
OLD MAP NO. 194
REFERENCES AEC
Report 3457; Smith and Tingley, 1983; Smith and others, 1983; Garside,
1973.
NOTES
NO.
238
NAME Iron King group
COUNTY
Esmeralda
LOCATION SE¼ SE¼ Sec. 7, T3N, R36E
UTMN
4220140
UTME 411680
DISTRICT Columbus
Marsh
QUAD Candelaria 7.5' (1982)
DEVELOPMENT
A 40-foot-deep shaft, a 25-foot adit, and several bulldozer
cuts.
RADIOACTIVITY Background = 0.017 mR/hr; High = 0.11
mR/hr. Select samples contain 0.03 and 0.04% eU3O8.
GEOLOGY A
tabular body of iron oxides (mainly limonite) occurs along the east-trending,
high-angle contact fault contact between chert of the Ordovician Palmetto
Formation and dolomite of the Permian Diablo Formation. The iron oxide body is
up to 100 feet wide and several hundred feet long. A porphyritic quartz
monzonite intrudes the chert within a few hundred feet of the prospect.
Radioactivity occurs at several spots in the iron oxide body. This body is most
likely a gossan produced by the oxidation of pyrite or other
sulfides.
RADIOACTIVE MINERALS Anomalously radioactive
limonite
HOST ROCK Sedimentary: Ordovician Palmetto Formation;
Permian Diablo Formation
MAIN COMMODITIES Fe, U
OLD MAP
NO. 199
REFERENCES AEC Report 3452; Smith and
Tingley, 1983; Smith and others, 1983; Mason and others, 1996; Garside,
1973.
NOTES MRDS: M035518
NO.
239
NAME Itsa group (12 claims)
OTHER NAME
Sierra del Rio Nuclear
COUNTY
Esmeralda
LOCATION SE¼ and NE¼ Sec. 9 and SW¼ and NW¼ Sec. 10,
T1N, R40E
UTMN 4201000
UTME
458000
DISTRICT Lone Mountain
QUAD Paymaster
Canyon 7.5' (1970)
RADIOACTIVITY Anomalous radioactivity
detected by airborne radiometric survey
GEOLOGY Anomalous
radioactivity detected during an airborne radiometric survey. The SW¼ of Sec. 10
is underlain by the Ordovician Palmetto Formation, and most of the rest of the
W½ of Sec. 10 and the E½ of Sec. 9 is underlain by Cambrian Mule Spring
Limestone.
HOST ROCK Sedimentary: Cambrian Mule Spring
Limestone; Ordovician Palmetto Formation
MAIN COMMODITIES
U(?)
REFERENCES Investigation of Lone Mountain, ca. 1980;
Albers and Stewart, 1972.
NOTES Exact location uncertain; UTMs
taken from near center of two sections.
NO.
240
NAME Jet group (Nos. 1-25), Taylor claims, Utron
group (4 claims)
COUNTY Esmeralda
LOCATION
Sec. 23, T1N, R39E (unsurveyed). In a canyon 0.5 miles northeast of electric
pole 5668 (elevation), Silver Peak 15-minute sheet.
UTMN
4197400
UTME 445900
DISTRICT
Weepah
QUAD Weepah 7.5' (1987)
DEVELOPMENT
Bulldozer trenches.
RADIOACTIVITY Background = 0.02-0.04 mR/hr;
High = 0.40-1.30 mR/hr. One 5-foot chip sample contained 0.124
eU3O8.
GEOLOGY Anomalous radioactivity and iron staining
reportedly occur along minor fractures in Tertiary rhyolites and tuffs. Utron
No. 3 was examined in 1970, but no radioactivity was found.
RADIOACTIVE
MINERALS Anomalously radioactive iron oxides(?)
HOST ROCK
Volcanic: Tertiary rhyolites and tuffs
MAIN COMMODITIES
U
OLD MAP NO. 200
REFERENCES AEC Reports 3460,
3442; Albers and Stewart, 1972; Mason and others, 1996; Garside,
1973.
NOTES MRDS: M242265
NO.
241
NAME Locality SU-1
OTHER NAME
United Tonopah No. 1 claim; Lambertucci property; Roma
property.
COUNTY Esmeralda
LOCATION Location:
SE¼ Sec. 29, T3N, R42E
UTMN 4214620
UTME
475530
QUAD Mount Butte 7.5' (1987)
DEVELOPMENT
Numerous bulldozer cuts, pits, and roads. More than 50 holes, each up to
100 feet deep, were drilled on the Silver Queen claims
(SU-3).
RADIOACTIVITY Background 0.03 mR/hr; High 0.25 mR/hr ;
Samples contain up to 1160 ppm U3O8.
GEOLOGY The six
radioactive localities described above all fall on a line which trends N25ºE.
Several occurrences are related to north-trending faults, and isoradioactivity
anomalies are elongated in a north-south direction. Davis and Hetland (1956)
mention that the uranium present is contained in collophanite. Samples
containing up to 27% P205 have been reported. Numerous exploration holes were
drilled in the 1950's and logged by the Atomic Energy Commission. These holes
show anomalous radioactivity to depths of 100 feet, the deepest drilled; fine,
diagenetic(?) pyrite is present at depth. The most anomalous radioactivity is
within 40 feet of the surface. Uranium mineralization may be localized by
certain beds, or may occur in several different beds along minor, iron-stained
fractures. These fractures nearly always trend north or northeast. Two samples
from locality SU-2 contained 374 ppm and 166 ppm of molybdenum, about 20 to 30
times normal vanadium is reportedly present only in amounts normal for rocks of
this type. Most of S/2 of section 29 and most of section 32 are underlain by
Miocene Siebert Tuff.
RADIOACTIVE MINERALS uranium-bearing
collophanite
HOST ROCK Volcanic: Miocene Siebert (Tuff)
Formation.
MAIN COMMODITIES U
OLD MAP NO.
184
REFERENCES AEC Report 3462; Finch, 1967; Davis and Hetland,
1956; Meeham, Sharp, and Mallory, 1956; Powers and Finch, 1955; Hetland, Sharp,
and Warner, 1969; Smith and Tingley, 1983; Smith and others, 1983; Mason and
others, 1996; Roma Property, 1970; Albers and Stewart, 1972; Garside, 1973;
Bonham and Garside, 1979; Hurley and Parker, 1982, no. 6.
NOTES
MRDS: M242286
NO. 242
NAME
Locality SU-2
OTHER NAME Bonanza No. 2 claim;
Lambertucci property; Roma property.
COUNTY
Esmeralda
LOCATION Location: SE¼ Sec. 29, T3N,
R42E
UTMN 4214500
UTME 475330
QUAD
Mount Butte 7.5' (1987)
RADIOACTIVITY Background 0.02
mR/hr; High 0.80 mR/hr
GEOLOGY See description for Locality
SU-1
RADIOACTIVE MINERALS uranium-bearing
collophanite
HOST ROCK Volcanic: Miocene Siebert (Tuff)
Formation.
MAIN COMMODITIES Mo, U, V
OLD MAP NO.
184
REFERENCES AEC Report 3462; Finch, 1967; Davis and
Hetland, 1956; Meeham, Sharp, and Mallory, 1956; Powers and Finch, 1955;
Hetland, Sharp, and Warner, 1969; Smith and Tingley, 1983; Smith and others,
1983; Mason and others, 1996; Roma Property, 1970; Albers and Stewart, 1972;
Garside, 1973; Bonham and Garside, 1979.
NOTES MRDS: M242286
NO. 243
NAME Locality
SU-3
OTHER NAME Silver Queen No. 2 claim; Lambertucci property;
Roma property; Silver Queen
COUNTY Esmeralda
LOCATION
NE¼ Sec. 32, T3N, R42E
UTMN 4214300
UTME
475300
QUAD Mount Butte 7.5'
(1987)
DEVELOPMENT More than 50 holes, each up to 100 feet
deep, were drilled on the Silver Queen claims.
RADIOACTIVITY
Background 0.015 mR/hr; High 0.12 mR/hr
GEOLOGY See description
for Locality SU-1
RADIOACTIVE MINERALS uranium-bearing
collophanite
HOST ROCK Volcanic: Miocene Siebert (Tuff)
Formation.
MAIN COMMODITIES U
OLD MAP NO.
184
REFERENCES AEC Report 3462; Finch, 1967; Davis and Hetland,
1956; Meeham, Sharp, and Mallory, 1956; Powers and Finch, 1955; Hetland, Sharp,
and Warner, 1969; Smith and Tingley, 1983; Smith and others, 1983; Mason and
others, 1996; Roma Property, 1970; Albers and Stewart, 1972; Garside, 1973;
Bonham and Garside, 1979.
NOTES MRDS: M242286
NO. 244
NAME Locality
SU-4
OTHER NAME Silver Queen No. 4 claim; Lambertucci property;
Roma property; Silver Queen
COUNTY Esmeralda
LOCATION
NE¼ Sec. 32, T3N, R42E
UTMN 4213910
UTME
475180
QUAD Mount Butte 7.5'
(1987)
RADIOACTIVITY Background 0.015 mR/hr; High 0.12
mR/hr
GEOLOGY See description for Locality
SU-1
RADIOACTIVE MINERALS uranium-bearing
collophanite
HOST ROCK Volcanic: Miocene Siebert (Tuff)
Formation.
MAIN COMMODITIES U
OLD MAP NO.
184
REFERENCES AEC Report 3462; Finch, 1967; Davis and Hetland,
1956; Meeham, Sharp, and Mallory, 1956; Powers and Finch, 1955; Hetland, Sharp,
and Warner, 1969; Smith and Tingley, 1983; Smith and others, 1983; Mason and
others, 1996; Roma Property, 1970; Albers and Stewart, 1972; Garside, 1973;
Bonham and Garside, 1979.
NOTES MRDS: M242286
NO. 245
NAME Locality
SU-5
OTHER NAME Garibaldi No. 11, 12 claims; Garibaldi
group
COUNTY Esmeralda
LOCATION NW¼ Sec. 32,
T3N, R42E
UTMN 4214000
UTME
474280
QUAD Mount Butte 7.5' (1987)
DEVELOPMENT
Bulldozer cuts.
RADIOACTIVITY Background 0.015 (mR/hr);
High 0.15 (mR/hr)
GEOLOGY Four radioactive occurrences lie
along a line that trends N15ºW. At two localities (SU-5 and U-6), a N10ºW,
55-60ºW fault was present. No faults could be identified at U- 7 and U-8 but
they may be present. At locality U-6, the radioactivity is associated with
certain iron-stained tuffs and tuffaceous shales in the footwall of a N10ºW
fault. A sample from U- 7 contained 117 ppm molybdenum. Most of S½ of Sec. 29
and most of Sec. 32 are underlain by Miocene Siebert (Tuff)
Formation.
RADIOACTIVE MINERALS Anomalously radioactive iron
oxides(?)
HOST ROCK Volcanic: Miocene Siebert (Tuff)
Formation.
MAIN COMMODITIES U
OLD MAP NO.
187
REFERENCES Smith and Tingley, 1983; Smith and others, 1983;
Mason and others, 1996; Roma Property, 1970; Garside, 1973.
NOTES
MRDS: M241834
NO.
246
NAME Locality U-1
OTHER NAME Malcolm No. 2
claim; Lambertucci property; Roma property.
COUNTY
Esmeralda
LOCATION Location: SE¼ Sec. 29, T3N,
R42E
UTMN 4214850
UTME 475560
QUAD
Mount Butte 7.5' (1987)
RADIOACTIVITY Background 0.010
mR/hr; High 0.035 mR/hr
GEOLOGY See description for Locality
SU-1
RADIOACTIVE MINERALS uranium-bearing
collophanite
HOST ROCK Volcanic: Miocene Siebert (Tuff)
Formation.
MAIN COMMODITIES U
OLD MAP NO.
184
REFERENCES AEC Report 3462; Finch, 1967; Davis and Hetland,
1956; Meeham, Sharp, and Mallory, 1956; Powers and Finch, 1955; Hetland, Sharp,
and Warner, 1969; Smith and Tingley, 1983; Smith and others, 1983; Mason and
others, 1996; Roma Property, 1970; Albers and Stewart, 1972; Garside, 1973;
Bonham and Garside, 1979.
NOTES MRDS: M242286
NO. 247
NAME Locality
U-10
COUNTY Esmeralda
LOCATION NW¼ Sec. 30,
T3N, R42E
UTMN 4215580
UTME
472840
QUAD Mount Butte 7.5' (1987)
DEVELOPMENT
Several bulldozer trenches, pits, and one drill hole (less than 100(?)
feet deep).
RADIOACTIVITY Background 0.015 mR/hr; High 0.09
mR/hr
GEOLOGY Abnormal radioactivity at two of the four above
localities (U-11 and U-25) is associated with minor faults that trend N25ºE.
Additionally, possible north-trending fractures were present at U-12 and the
anomaly at U-10 may also be related to unrecognized fractures. The trend of
these four occurrences is also suggestive of a structure having this direction,
but beds of the Siebert Tuff here strike about due north and dip 25ºW, and the
radioactivity may be related to bedding. Iron oxides occur at both radioactive
and non-radioactive localities, in the tuffs and tuffaceous shales.
HOST
ROCK Volcanic: Miocene Siebert (Tuff) Formation.
MAIN
COMMODITIES U
OLD MAP NO. 182
REFERENCES
Smith and Tingley, 1983; Smith and others, 1983; Mason and others, 1996;
Garside, 1973.
NOTES MRDS: M241829
NO. 248
NAME Locality
U-11
COUNTY Esmeralda
LOCATION NW¼ Sec. 30,
T3N, R42E
UTMN 4215800
UTME
472870
QUAD Mount Butte 7.5' (1987)
RADIOACTIVITY
Background 0.015 mR/hr; High 0.045 mR/hr
GEOLOGY See
description for Locality U-10
HOST ROCK Volcanic: Miocene
Siebert (Tuff) Formation.
MAIN COMMODITIES U
OLD MAP
NO. 182
REFERENCES Smith and Tingley, 1983; Smith
and others, 1983; Mason and others, 1996; Garside, 1973.
NOTES
MRDS: M241829
NO. 249
NAME
Locality U-12
COUNTY Esmeralda
LOCATION
SW¼ Sec. 30, T3N, R42E
UTMN 4215200
UTME
472740
QUAD Mount Butte 7.5' (1987)
RADIOACTIVITY
Background 0.012 mR/hr
GEOLOGY See description for
Locality U-10
HOST ROCK Volcanic: Miocene Siebert (Tuff)
Formation.
MAIN COMMODITIES U
OLD MAP NO.
182
REFERENCES Smith and Tingley, 1983; Smith and others, 1983;
Mason and others, 1996; Garside, 1973.
NOTES MRDS: M241829
NO. 250
NAME Locality
U-13
OTHER NAME Table Mountain No. 6 claim; Lambertucci
property; Roma property.
COUNTY Esmeralda
LOCATION
NE¼ Sec. 32, T3N, R42E
UTMN 4213800
UTME
475140
QUAD Mount Butte 7.5'
(1987)
RADIOACTIVITY Background 0.025 mR/hr; High 0.49 mR/hr;
Chip samples (2 to 4 feet) contain from 0.12 to 0.18% cU3O8. Radiometric
analyses are both slightly higher and lower than chemical.
GEOLOGY
See description for Locality SU-1
RADIOACTIVE MINERALS
uranium-bearing collophanite
HOST ROCK Volcanic: Miocene
Siebert (Tuff) Formation.
MAIN COMMODITIES U
OLD MAP
NO. 184
REFERENCES AEC Report 3462; Finch, 1967;
Davis and Hetland, 1956; Meeham, Sharp, and Mallory, 1956; Powers and Finch,
1955; Hetland, Sharp, and Warner, 1969; Smith and Tingley, 1983; Smith and
others, 1983; Mason and others, 1996; Roma Property, 1970; Albers and Stewart,
1972; Garside, 1973; Bonham and Garside, 1979.
NOTES MRDS:
M242286
NO. 251
NAME
Locality U-14a
OTHER NAME Garibaldi No. 6 claim; Garibaldi
group
COUNTY Esmeralda
LOCATION Center SW¼
Sec. 32, T3N, R42E
UTMN 4213320
UTME
474620
QUAD Mount Butte 7.5' (1987)
DEVELOPMENT
Bulldozer cuts.
RADIOACTIVITY Background 0.045 mR/hr;
0.15 mR/hr
GEOLOGY Anomalous radioactivity occurs in tuffaceous
shales, sandstones, and conglomerates. Some areas of higher radioactivity are
associated with iron-stained fault zones. A N10ºW fault is present at locality
U-15. Some areas of conglomerate exposure have a high background over several
thousand square feet. Most of Sec. 32 is underlain by Miocene Siebert (Tuff)
Formation.
RADIOACTIVE MINERALS Anomalously radioactive iron
oxides(?)
HOST ROCK Volcanic: Miocene Siebert (Tuff)
Formation.
MAIN COMMODITIES U
OLD MAP NO.
185
REFERENCES AEC Report 3462; Finch, 1967; Davis and Hetland,
1956; Meeham, Sharp, and Mallory, 1956; Powers and Finch, 1955; Hetland, Sharp,
and Warner, 1969; Smith and Tingley, 1983; Smith and others, 1983; Mason and
others, 1996; Roma Property, 1970; Garside, 1973; Bonham and Garside,
1979.
NOTES MRDS: M241832
NO.
252
NAME Locality U-14b
OTHER NAME
Garibaldi No. 6 claim; Garibaldi group
COUNTY
Esmeralda
LOCATION Center SW¼ Sec. 32, T3N, R42E
UTMN
4213350
UTME 474600
QUAD Mount Butte
7.5' (1987)
RADIOACTIVITY Background 0.04 mR/hr; 0.30
mR/hr
GEOLOGY See description for Locality
U-14a
RADIOACTIVE MINERALS Anomalously radioactive iron
oxides(?)
HOST ROCK Volcanic: Miocene Siebert (Tuff)
Formation.
MAIN COMMODITIES U
OLD MAP NO.
185
REFERENCES AEC Report 3462; Finch, 1967; Davis and Hetland,
1956; Meeham, Sharp, and Mallory, 1956; Powers and Finch, 1955; Hetland, Sharp,
and Warner, 1969; Smith and Tingley, 1983; Smith and others, 1983; Mason and
others, 1996; Roma Property, 1970; Garside, 1973; Bonham and Garside,
1979.
NOTES MRDS: M241832
NO.
253
NAME Locality U-15
OTHER NAME
Garibaldi No. 5 claim; Garibaldi group
COUNTY
Esmeralda
LOCATION Center SW¼ Sec. 32, T3N, R42E
UTMN
4213620
UTME 474580
QUAD Mount Butte
7.5' (1987)
RADIOACTIVITY Background 0.040 mR/hr; 0.20
mR/hr
GEOLOGY See description for Locality
U-14a
RADIOACTIVE MINERALS Anomalously radioactive iron
oxides(?)
HOST ROCK Volcanic: Miocene Siebert (Tuff)
Formation.
MAIN COMMODITIES U
OLD MAP NO.
185
REFERENCES AEC Report 3462; Finch, 1967; Davis and Hetland,
1956; Meeham, Sharp, and Mallory, 1956; Powers and Finch, 1955; Hetland, Sharp,
and Warner, 1969; Smith and Tingley, 1983; Smith and others, 1983; Mason and
others, 1996; Roma Property, 1970; Garside, 1973; Bonham and Garside,
1979.
NOTES MRDS: M241832
NO.
254
NAME Locality U-16
OTHER NAME
Robert Emmett No. 2 claim; Lambertucci property; Roma property.
COUNTY
Esmeralda
LOCATION Center SE¼ Sec. 32, T3N,
R42E
UTMN 4213380
UTME 475280
QUAD
Mount Butte 7.5' (1987)
RADIOACTIVITY Background 0.030
mR/hr; 0.075 mR/hr
GEOLOGY See description for Locality
U-14a
RADIOACTIVE MINERALS Anomalously radioactive iron
oxides(?)
HOST ROCK Volcanic: Miocene Siebert (Tuff)
Formation.
MAIN COMMODITIES U
OLD MAP NO.
185
REFERENCES AEC Report 3462; Finch, 1967; Davis and Hetland,
1956; Meeham, Sharp, and Mallory, 1956; Powers and Finch, 1955; Hetland, Sharp,
and Warner, 1969; Smith and Tingley, 1983; Smith and others, 1983; Mason and
others, 1996; Roma Property, 1970; Garside, 1973; Bonham and Garside,
1979.
NOTES MRDS: M241832
NO.
255
NAME Locality U-19
OTHER NAME
Garibaldi No. 17 claim; Garibaldi group
COUNTY
Esmeralda
LOCATION SW¼ Sec. 32, T3N, R42E
UTMN
4212980
UTME 474550
QUAD Mount Butte 7.5'
(1987)
DEVELOPMENT Bulldozer trenches.
RADIOACTIVITY
Background 0.04 mR/hr; High 0.12 mR/hr
GEOLOGY Anomalous
radioactivity is concentrated in iron-stained tuffaceous shales and
conglomeratic, tuffaceous sandstones. At two localities, the uranium seems to be
associated with a certain bed or sequence of beds, (U-19 and U- 20), and at a
third (U-21) the radioactivity is concentrated in the footwall of a fault that
strikes N45ºE, and dips 60ºNW. Most of Sec.32 and the NE¼ of Sec. 6 are
underlain by Miocene Siebert (Tuff) Formation.
RADIOACTIVE MINERALS
uranium-bearing rock
HOST ROCK Volcanic: Miocene Siebert
(Tuff) Formation.
MAIN COMMODITIES U
OLD MAP NO.
186
REFERENCES Smith and Tingley, 1983; Smith and
others, 1983; Mason and others, 1996; Roma Property, 1970; Garside, 1973; Bonham
and Garside, 1979.
NOTES MRDS: M241831
NO. 256
NAME Locality
U-20
OTHER NAME Garibaldi No. 17 claim; Garibaldi
group
COUNTY Esmeralda
LOCATION SW¼ SW¼ sc.
32, T3N, R42E
UTMN 4212930
UTME
474200
QUAD Mount Butte 7.5' (1987)
RADIOACTIVITY
Background 0.04 mR/hr; High 0.07 mR/hr
GEOLOGY See
description for Locality U-19
RADIOACTIVE MINERALS
uranium-bearing rock
HOST ROCK Volcanic: Miocene Siebert (Tuff)
Formation.
MAIN COMMODITIES U
OLD MAP NO.
186
REFERENCES Smith and Tingley, 1983; Smith and others, 1983;
Mason and others, 1996; Roma Property, 1970; Garside, 1973; Bonham and Garside,
1979.
NOTES MRDS: M241831
NO.
257
NAME Locality U-21
COUNTY
Esmeralda
LOCATION NE¼ Sec. 6, T2N, R42E
UTMN
4212500
UTME 474080
QUAD Mount Butte 7.5'
(1987)
RADIOACTIVITY Background 0.035 mR/hr; High 0.07
mR/hr
GEOLOGY See description for Locality
U-19
RADIOACTIVE MINERALS uranium-bearing rock
HOST
ROCK Volcanic: Miocene Siebert (Tuff) Formation.
MAIN
COMMODITIES U
OLD MAP NO. 186
REFERENCES
Smith and Tingley, 1983; Smith and others, 1983; Mason and others, 1996;
Roma Property, 1970; Garside, 1973.
NOTES MRDS: M241831
NO. 258
NAME Locality
U-23
OTHER NAME Rich and Rare; Rich and Rare claim; Quinseck
prospect (2 of 52 claims).
COUNTY Esmeralda
LOCATION
NE¼ SE¼ Sec. 29, T3N, R42E
UTMN 4215080
UTME
475640
QUAD Mount Butte 7.5'
(1987)
DEVELOPMENT Bulldozer cuts and drill
holes.
RADIOACTIVITY Background = 0.012 mR/hr; High = 0.07
mR/hr. Six- and 3-foot chip samples contain 0.06 and 0.02% eU3O8
respectively.
GEOLOGY An area of 10 to 20 square feet in
iron-stained tuffs is radioactive. A fault that strikes N17ºE, and dips 75ºW was
reportedly radioactive at this locality. The fault could not be located 1969,
but this locality is one of several on a N25ºE trend of occurrences. Most of S½
of Section 29 and most of Section 32 are underlain by Miocene Siebert (Tuff)
Formation.
RADIOACTIVE MINERALS Anomalously radioactive iron
oxide(?)
HOST ROCK Volcanic: Miocene Siebert (Tuff)
Formation.
MAIN COMMODITIES U
OLD MAP NO.
183
REFERENCES AEC Report 3441; Smith and Tingley, 1983; Smith
and others, 1983; Mason and others, 1996; Garside, 1973; Bonham and Garside,
1979.
NOTES MRDS: M241827; UTMs at site of Locality U-23; Smith
and others (1983) and Smith and Tingley (1983) place claims immediately east of
Locality U-7 in Sec. 32.
NO.
259
NAME Locality U-25
COUNTY
Esmeralda
LOCATION SW¼ Sec. 19, T3N, R42E
UTMN
4216320
UTME 472980
QUAD Mount Butte 7.5'
(1987)
RADIOACTIVITY Background 0.05(?) mR/hr; High 0.25
mR/hr
GEOLOGY See description for Locality U-10
HOST
ROCK Volcanic: Miocene Siebert (Tuff) Formation.
MAIN
COMMODITIES U
OLD MAP NO. 182
REFERENCES
Smith and Tingley, 1983; Smith and others, 1983; Mason and others, 1996;
Garside, 1973.
NOTES MRDS: M241829
NO. 260
NAME Locality
U-6
OTHER NAME Venti September No. 1 claim; Garibaldi
group
COUNTY Esmeralda
LOCATION SW¼ SW¼ Sec.
29, T3N, R42E
UTMN 4214580
UTME
474240
QUAD Mount Butte 7.5' (1987)
DEVELOPMENT
200 foot drill hole.
RADIOACTIVITY Background 0.03
(mR/hr); High 0.12 (mR/hr)
GEOLOGY See description for Locality
SU-5
RADIOACTIVE MINERALS Anomalously radioactive iron
oxides(?)
HOST ROCK Volcanic: Miocene Siebert (Tuff)
Formation.
MAIN COMMODITIES U
OLD MAP NO.
187
REFERENCES Smith and Tingley, 1983; Smith and others, 1983;
Mason and others, 1996; Roma Property, 1970; Garside, 1973.
NOTES
MRDS: M241834
NO.
261
NAME Locality U-7
OTHER NAME Garibaldi No.
10 claim; Garibaldi group
COUNTY Esmeralda
LOCATION
NW¼ Sec. 32, T3N, R42E
UTMN 4214360
UTME
474300
QUAD Mount Butte 7.5'
(1987)
RADIOACTIVITY Background 0.03 (mR/hr); High 0.20
(mR/hr)
GEOLOGY See description for Locality
SU-5
RADIOACTIVE MINERALS Anomalously radioactive iron
oxides(?)
HOST ROCK Volcanic: Miocene Siebert (Tuff)
Formation.
MAIN COMMODITIES Mo, U
OLD MAP NO.
187
REFERENCES Smith and Tingley, 1983; Smith and others, 1983;
Mason and others, 1996; Roma Property, 1970; Garside, 1973.
NOTES
MRDS: M241834
NO.
262
NAME Locality U-8
OTHER NAME Garibaldi No.
11 claim; Garibaldi group
COUNTY Esmeralda
LOCATION
NW¼ Sec. 32, T3N, R42E
UTMN 4214160
UTME
474390
QUAD Mount Butte 7.5'
(1987)
RADIOACTIVITY Background 0.015 (mR/hr); High 0.020
(mR/hr)
GEOLOGY See description for Locality
SU-5
RADIOACTIVE MINERALS Anomalously radioactive iron
oxides(?)
HOST ROCK Volcanic: Miocene Siebert (Tuff)
Formation.
MAIN COMMODITIES U
OLD MAP NO.
187
REFERENCES Smith and Tingley, 1983; Smith and others, 1983;
Mason and others, 1996; Roma Property, 1970; Garside, 1973.
NOTES
MRDS: M241834
NO.
263
NAME Mable Mine
OTHER NAME Ouida claims;
Gold Crest Mining Co. property
COUNTY
Esmeralda
LOCATION Sec. 25, T7S, R41.5E
UTMN
4129120
UTME 471960
DISTRICT
Tokop
QUAD Gold Point 7.5' (1968)
DEVELOPMENT
Series of open and caved shafts, trenches, and prospect pits.
GEOLOGY
Workings follow an E-W fault zone which curves N45ºW towards the west.
The fault zone ranges from approximately 8 inches wide in the east to over 3
feet at the west end of the workings. The host rock is the Precambrian Wyman
Formation, thinly bedded mud/siltstone which has been metamorphosed locally into
spotted phyllites. The rocks are highly fractured and heavily iron oxide
stained. No vein was observed in outcrop, however the dumps were composed of
calcite and quartz vein material, both of which were highly brecciated, cemented
with limonite stained silica, and carried oxidized pyrite grains. The fault zone
was argillically altered. An unknown uranium mineral was
reported.
RADIOACTIVE MINERALS unknown uranium
mineral
HOST ROCK Sedimentary: Precambrian Wyman
Formation
MAIN COMMODITIES Au, U, W(?)
NBMG SAMPLE
1364
REFERENCES Smith and Tingley, 1983; Smith and
others, 1983; Mason and others, 1996; Garside, 1973.
NOTES
MRDS: M242289
NO. 264
NAME
Magma group (5 claims)
COUNTY
Esmeralda
LOCATION Center Sec. 33, T2N, R36E
UTMN
4204500
UTME 414400
DISTRICT
Coaldale
QUAD Rhyolite Ridge NW 7.5'
(1987)
DEVELOPMENT Numerous bulldozer
pits.
RADIOACTIVITY Background = 0.03 mR/hr; High = 0.30 mR/hr.
A 6-foot chip sample contained 0.06% eU3O8.
GEOLOGY
Radioactivity is reported from along the contact of a rhyolite and a tuff. Iron
stained quartz stringers are associated. The prospect could not be found in
1970.
RADIOACTIVE MINERALS Anomalously radioactive iron
oxides
HOST ROCK Volcanic: rhyolite and tuff
MAIN
COMMODITIES U
OLD MAP NO. 177
REFERENCES
AEC Report 3455; Mason and others, 1996; Garside, 1973.
NOTES
MRDS: M242031; UTMs from group of prospect symbols near center of
Sec. 33 on topographic map.
NO.
265
NAME Mohawk property
OTHER NAME Mohawk
mine; Argentite mine
COUNTY Esmeralda
LOCATION
“Western Esmeralda County”: Sec. 36, T2S, R37E(?) (R38E?)
UTMN
4175840
UTME 428360
DISTRICT Red
Mountain
QUAD Mohawk Mine 7.5' (1987)
OTHER
PRODUCTION 1920-1950's (1952-58 main production): 2,000,000 lbs, Ag
(20-25 opt); 1980-83
GEOLOGY Radioactive ore with vanadium has
been reported from the Mohawk property in western Esmeralda County. Gold and
lead were also reported. There is a Mohawk mine in the Argentite mining district
(NE¼ Sec. 36, T2S, R38E); it is not known whether this is the property
containing the radioactive ore. This mine is in Pliocene Latite of Sheep
Mountain.
RADIOACTIVE MINERALS radioactive ore
HOST
ROCK Volcanic: Pliocene Latite of Sheep Mountain
MAIN
COMMODITIES Ag
OTHER COMMODITIES Au, Cu, Pb, U, V,
Zn
NBMG SAMPLE 1988, 1989, 1990; 1991, 1992, 1993
OLD MAP
NO. 204
REFERENCES Engineering and Mining Journal,
1951; Albers and Stewart, 1972; Smith and Tingley, 1983; Smith and others, 1983;
Mason and others, 1996; Gallagher, 1952; Garside, 1973; Stewart and others,
1974
NOTES MRDS: M241986; The UTMs and other data are for the
mine in R38E. It is uncertain if this is the right Mohawk property. Another
Mohawk gold-lead mine was in operation in the early 1950s in the Good Hope
District in T4S, R36-37E.
NO.
266
NAME Mustang, Mustang Nos. 1-7 claims
OTHER NAME
Mustang claim group
COUNTY Esmeralda
LOCATION
NE¼ Sec. 31, T1S, R37E (unsurveyed). Projected from the
west
UTMN 4185530
UTME 420020
QUAD
Rhyolite Ridge SW 7.5' (1987)
DEVELOPMENT Several
bulldozer cuts.
RADIOACTIVITY Background = 0.03 mR/hr; High =
0.20 mR/hr. A select sample contained 0.13% eU3O8 (0.198 cU3O8) and a 3-foot
chip sample contained 0.02% U3O8. Other samples contain 0.093 and 0.426%
cU3O8.
GEOLOGY Uranium mineralization (carnotite?) occurs along
a shear zone and along bedding planes in fluviolacustrine sediments of the
Tertiary Esmeralda Formation. The sediments consist of partially silicified,
carbonaceous mudstone units separated by conglomerates. The uranium occurs in
the mudstone units.
RADIOACTIVE MINERALS
carnotite(?)
HOST ROCK Sedimentary: Tertiary lacustrine
sediments
MAIN COMMODITIES U
OLD MAP NO.
202
REFERENCES AEC Report 3445; Cupp and others, 1977b; Mason
and others, 1996; Garside, 1973; Castor and Ferdock, 2004.
NOTES
MRDS: M242270
NO.
267
NAME Occurrence (T1N, R36E)
COUNTY
Esmeralda
LOCATION SW¼ Sec. 4, T1N, R36E (unsurveyed).
Projected from north.
UTMN 4202500
UTME
413800
DISTRICT Coaldale
QUAD Rhyolite Ridge
NW 7.5' (1987)
DEVELOPMENT Bulldozer cuts and several small
pits.
RADIOACTIVITY Background = 0.015 mR/hr; High = 0.06
mR/hr
GEOLOGY A few small spots in a Tertiary bentonitic
conglomerate are slightly radioactive. The conglomerate may be near the base of
a Tertiary clastic section, which here overlies the Ordovician Palmetto
Formation. The Tertiary sedimentary rocks in this vicinity were apparently
deposited on a surface of high relief. No uranium minerals were noted during a
visit in 1970.
HOST ROCK Sedimentary: Tertiary bentonitic
conglomerate
MAIN COMMODITIES U(?)
OLD MAP NO.
178
REFERENCES ; Garside, 1973.
NOTES Location
uncertain; UTMs from near center of quarter section.
NO. 268
NAME Occurrence (T7S,
R40E)
COUNTY Esmeralda
LOCATION SW¼ Sec. 23,
and NW¼ Sec. 26, T7S, R40E
UTMN 4128940
UTME
454280
DISTRICT Tule Canyon
QUAD Tule Canyon
7.5' (1987)
DEVELOPMENT Several open cuts and prospect
pits.
RADIOACTIVITY Background = 0.015 mR/hr; High = 0.15 mR/hr
over an area of 500 by 800 feet. A small area along a fault gave readings up to
0.20 mR/hr. A grab sample ran 0.08% eU3O8.
GEOLOGY Autunite(?)
occurs along a fault exposed in a 15-foot-deep shaft. The wall rock is
reportedly shale (Precambrian Wyman Formation).
RADIOACTIVE MINERALS
Autunite(?)
HOST ROCK Sedimentary: Precambrian Wyman
Formation
MAIN COMMODITIES U
OLD MAP NO.
191
REFERENCES AEC Report 3447; Smith and Tingley, 1983; Smith
and others, 1983; Garside, 1973; Mason and others, 1996.
NOTES
MRDS: M242016
NO. 269
NAME
Old Ingalls mine
OTHER NAME Silver Hills Nevada
property
COUNTY Esmeralda
LOCATION Sec. 22,
T7S, R40E
UTMN 4130150
UTME
452780
DISTRICT Tule Canyon
QUAD Tule Canyon
7.5' (1987)
GEOLOGY The presence of uranium has been reported
at this mine. No other information is available. Section 22 is mostly underlain
by Jurassic Granitic Rocks of Sylvia Mountains Pluton which is locally covered
by Quaternary and/or Tertiary basalt.
RADIOACTIVE MINERALS
uranium-bearing rock
HOST ROCK Intrusive: Jurassic Granitic
Rocks of Sylvia Mountains Pluton
MAIN COMMODITIES Ag, Au,
Pb
OTHER COMMODITIES U
OLD MAP NO.
188
REFERENCES Smith and Tingley, 1983; Smith and others, 1983;
Mason and others, 1996; Roma Property, 1970; Garside, 1973; McKee,
1985.
NOTES MRDS: M242367
NO.
270
NAME Quinseck claim
COUNTY
Esmeralda
LOCATION NE¼ SW¼ Sec. 33, T2N, R37E
UTMN
4204180
UTME 423730
DISTRICT
Coaldale
QUAD Rhyolite Ridge NE 7.5'
(1987)
RADIOACTIVITY Description included with that for
Coaldale prospect.
GEOLOGY Description included with that for
Coaldale prospect.
RADIOACTIVE MINERALS Autunite;
phosphuranylite
HOST ROCK Volcanic: rhyolitic welded
tuff
MAIN COMMODITIES U
NBMG SAMPLE
460
OLD MAP NO. 181
REFERENCES Duncan, 1953c;
Sharp, 1956; Duncan 1952a; Moore and Stephens, 1954; McKelvey, 1957; AEC Report
3453; Davis, 1954, p. 6, 8; Cupp and others, 1977b; Smith and Tingley, 1983;
Smith and others, 1983; Garside, 1973; 1979.
NOTES MRDS:
M242291
NO. 271
NAME
Randolph Mine
OTHER NAME Randolf; Randolph group (8 claims);
Randolph Gold Mining Co.; MS 4003
COUNTY
Esmeralda
LOCATION N½ Sec. 16, T8S, R42E
UTMN
4122390
UTME 476020
DISTRICT
Tokop
QUAD Gold Mountain 7.5' (1988); Gold Point 7.5'
(1968)
DEVELOPMENT A 200-foot shaft and an adit with 300 feet
of workings. This is an old gold mine.
RADIOACTIVITY
(Underground) Background = 0.02 mR/hr; High = 0.5 mR/hr
GEOLOGY
A kaolinized shear zone in an adit is abnormally radioactive over a 0.5 to 1
foot width. This radioactive zone parallels the drift for 20 feet, at a distance
of about 180 feet from the portal. Autunite(?) and meta-autunite were reported.
The wall rock is quartz monzonite, and workings follow northwesterly trending
shear zones.
RADIOACTIVE MINERALS Autunite(?);
meta-autunite
HOST ROCK Intrusive: quartz monzonite
MAIN
COMMODITIES Au
OTHER COMMODITIES U
OLD MAP
NO. 196
REFERENCES AEC Report 3434; Giles, undated;
Garside, 1973; Castor and Ferdock, 2004.
NOTES UTMs from shaft
on topographic map that coincides with location of claim group.
NO. 272
NAME Red Rock claims
(Nos. 1 and 2)
COUNTY Esmeralda
LOCATION Sec.
2, T8S, R42E (unsurveyed).
UTMN 4125520
UTME
478770
DISTRICT Tokop
QUAD Scottys Junction SW
7.5' (1982)
DEVELOPMENT A 40-foot inclined shaft, two adits,
and several prospect pits. Old workings are for gold.
RADIOACTIVITY
Radioactivity: About 10 times background. Select samples contain 0.005%
cU3O8
GEOLOGY Autunite, azurite, malachite, meta-autunite,
siderite, and iron oxides occur along a highly brecciated shear zone in
limestone of the Precambrian Wyman Formation.
RADIOACTIVE MINERALS
Autunite; meta-autunite
HOST ROCK Sedimentary:
Precambrian Wyman Formation
MAIN COMMODITIES U
OLD MAP
NO. 197
REFERENCES AEC Report 3467; Smith and
Tingley, 1983; Smith and others, 1983; Mason and others, 1996; Garside, 1973;
Castor and Ferdock, 2004.
NOTES MRDS: M242058
NO. 273
NAME Rhyolite
Ridge
COUNTY Esmeralda
LOCATION Sec. 36, T1S,
R37E and Secs. 30, 31, T1S, R38E
UTMN 4185000
UTME
428500
DISTRICT Red Mountain
QUAD
Rhyolite Ridge 7.5' (1987)
GEOLOGY Rameauite occurs as yellow
coatings on rhyolite.
RADIOACTIVE MINERALS rameauite
HOST
ROCK Volcanic: rhyolite
MAIN COMMODITIES
U
REFERENCES Castor and Ferdock, 2004
NOTES
Exact location uncertain; UTMs from approximate center of ridge.
NO. 274
NAME Susan group (Nos.
1-6)
COUNTY Esmeralda
LOCATION Sec. 7, T8S,
R42E; Exact location unknown
UTMN 4124220
UTME
473320
DISTRICT Tokop
QUAD Gold Point 7.5'
(1968)
RADIOACTIVITY Background = 0.04 mR/hr; High = 0.10
mR/hr. 1.5 and 2.0 foot chip samples contained 0.02 and 0.09%
eU3O8.
GEOLOGY Abnormal radioactivity occurs in isolated pods
and stringers along the contacts of a quartz-rich pegmatite dike which cuts
Jurassic(?) granitic rocks. The radioactive pods occur in the country rock along
both sides of the dike, but the dike itself is barren. Biotite, lepidolite,
quartz, and orthoclase were identified in the dike.
HOST ROCK
Intrusive: Jurassic(?) granitic rocks and pegmatite dike
MAIN
COMMODITIES U
OLD MAP NO. 195
REFERENCES
AEC Rept 3439; Smith and Tingley, 1983; Smith and others, 1983; Mason and
others, 1996; Garside, 1973.
NOTES MRDS: M242377
NO. 275
NAME Thunderbird group
(Nos. 1-12)
OTHER NAME Thunder Bird; Thunder Bird claims nos.
1-12
COUNTY Esmeralda
LOCATION SE¼ Sec. 4,
T6S, R40E
UTMN 4143950
UTME
452100
DISTRICT Palmetto
QUAD Magruder
Mountain 7.5' (1987)
DEVELOPMENT Three
pits.
RADIOACTIVITY Background = 0.02 mR/hr; High = 0.075
mR/hr
GEOLOGY Very slightly anomalous radioactivity occurs
along bedding planes in a series of well-bedded calcareous, lacustrine tuffs(?).
The beds strike N80°W and dips 45°SW.
HOST ROCK Sedimentary:
well-bedded calcareous, lacustrine tuffs(?)
MAIN COMMODITIES
U
OLD MAP NO. 208
REFERENCES AEC Report 3438;
Mason and others, 1996; Garside, 1973; Bonham and Papke, 1969.
NOTES
MRDS: M242365; UTMs from MRDS
NO.
276
NAME Tule Canyon placers
OTHER NAME
Bat claim; Los Angeles Rock and Gravel Co. claims
COUNTY
Esmeralda
LOCATION Secs. 31, 32, 33, 34, T6S, R40E, and Secs.
2, 3, 4, T7S, R40E
UTMN 4134760
UTME
452940
DISTRICT Tule Canyon
QUAD Tule Canyon
7.5' (1987)
OTHER PRODUCTION 1876-present: intermittent
production of placer Au; 1800s: $1,000,000 reported; 1933-1936: 1,200 oz placer
Au
GEOLOGY Reported “estimates” in 1954 of the values per cubic
yard in the heavy mineral fraction of 15 million cubic yards of gravel were as
follows: gold, 12 cents; tungsten minerals, 6 cents; fluorite, 6 cents;
uranothorite(?), 3 cents; monazite and xenotime, 3 cents; columbite and euxenite
1.5 cents; zircon and rutile, 1.5 cents. (Total = 33 cents). Placer mined along
the upper 4 miles of the canyon. Euxenite reported with uranothorite, xenotime,
and columbite.
RADIOACTIVE MINERALS euxenite; monazite;
uranothorite(?)
HOST ROCK Sedimentary (placer):
alluvium
MAIN COMMODITIES Au
OTHER COMMODITIES
Columbite, F, Monazite, U, W
OLD MAP NO.
189
REFERENCES Unpub. data, Nevada Bureau of Mines; Lovering,
1954, p. 96; Smith and Tingley, 1983; Smith and others, 1983; Mason and others,
1996; Johnson, 1978; Garside, 1973; Castor and Ferdock, 2004.
NOTES
MRDS: M242493; UTMs from point noted in Smith and others (1983) and
Smith and Tingley (1983).
NO.
277
NAME Tule Royal group (Nos. 1-6)
OTHER NAME
Pilot claims
COUNTY Esmeralda
LOCATION
Sec. 3, T8S, R40E; along the east side of Tule Canyon near its
mouth.
UTMN 4125380
UTME
453700
DISTRICT Tule Canyon
QUAD Tule Canyon
7.5' (1987)
DEVELOPMENT A small pit, shaft, and
adits.
RADIOACTIVITY Background = 0.15 mR/hr; High = 0.2 mR/hr.
A grab sample contained 0.02% eU3O8.
GEOLOGY A small area (2
square feet) of anomalous radioactivity is associated with a 2-foot-wide quartz
vein. The radioactivity is associated with limonitic patches in the country rock
(granite?) adjacent to the vein. Cinnabar(?) also was reported. The outcrops in
Section 22 are mostly Jurassic Granitic Rocks of Sylvia Mountains
Pluton
RADIOACTIVE MINERALS Anomalously radioactive
limonite
HOST ROCK Intrusive: Jurassic Granitic Rocks of Sylvia
Mountains Pluton
MAIN COMMODITIES Au, Hg, U
OLD MAP
NO. 190
REFERENCES AEC Report 3446; Smith and
Tingley, 1983; Smith and others, 1983; Mason and others, 1996; Garside, 1973;
McKee, 1985.
NOTES MRDS: M242017
NO. 278
NAME Virginia group (17
claims)
COUNTY Esmeralda
LOCATION SE¼ Sec. 15,
T2S, R39E
UTMN 4179500
UTME
443500
DISTRICT Silver Peak
QUAD Silver Peak
7.5' (1987)
RADIOACTIVITY Background = 0.03 mR/hr; High = 1.0
mR/hr. One sample contained 0.235% eU3O8 but only 0.004% cU3O8. A grab sample
ran 0.03% cU3O8.
GEOLOGY Hot springs along the edge of Clayton
Valley dry lake are reportedly radioactive.
RADIOACTIVE MINERALS
radioactive minerals dissolved in water
HOST ROCK
Sedimentary: hot springs deposits
MAIN COMMODITIES U
OLD
MAP NO. 205
REFERENCES AEC Report 3443; Garside and
Schilling, 1979; Mason and others, 1996; Garside, 1973.
NOTES
MRDS: M242342; Exact location uncertain; UTMs from the center of the quarter
section.
NO. 279
NAME
Weepah Uranium group (14 claims)
COUNTY
Esmeralda
LOCATION Secs. 20, 21, T1N, R40E (unsurveyed). Could
not be located in 1969.
UTMN 4198550
UTME
456220
DISTRICT Lone Mountain
QUAD Paymaster
Canyon 7.5' (1970)
DEVELOPMENT Old workings for gold. Three
pits, 6 to 8 feet deep.
RADIOACTIVITY Background = 0.04 mR/hr
(surface), 0.15 mR/hr (pit); High = 0.50 mR/hr (pit). A 2-foot chip sample
contained 0.08% eU3O8.
GEOLOGY Geology: Anomalous radioactivity
occurs along a northeast-trending fault in metamorphosed sedimentary rocks. At
the prospect the fault strikes N70ºE, and dips 60ºNW. The fault zone is from 6
inches to 2 feet wide.
HOST ROCK Sedimentary: metamorphosed
sedimentary rocks
MAIN COMMODITIES Au, U
OLD MAP NO.
201
REFERENCES AEC Report 3437; Smith and Tingley, 1983;
Smith and others, 1983; Mason and others, 1996; Garside, 1973.
NOTES
MRDS: M242270; UTMs from MRDS
NO.
280
NAME Wildwood group (27 claims)
OTHER NAME
Wild Wind
COUNTY Esmeralda
LOCATION
T5N, R37E or R38E; exact location unknown
UTMN
4236000
UTME 441000
QUAD Outlaw Springs 7.5'
(1980)
DEVELOPMENT A 25-foot-long
trench.
RADIOACTIVITY Background = 0.04 mR/hr; High = 0.18
mR/hr. A 0.5-foot chip sample contained 0.11% eU3O8 and a 1.5-foot chip sample
contained 0.03% eU3O8.
GEOLOGY A yellow, earthy uranium mineral
occurs as coatings along joints and bedding planes in tuffaceous Mio-Pliocene
sedimentary rocks. These are usually described as part of the Esmeralda
Formation. The uranium mineralization is apparently present near the contact of
the sedimentary rocks with an underlying welded tuff and
agglomerate.
RADIOACTIVE MINERALS yellow, earthy uranium
mineral
HOST ROCK Sedimentary: Mio-Pliocene tuffaceous
sedimentary rocks
MAIN COMMODITIES U
OLD MAP NO.
171
REFERENCES AEC Report 3436; Albers and Stewart,
1972; Garside, 1973.
NOTES Location uncertain; Description in
“Geology” fits rocks in SE third of R38E; UTMs from approximate center of these
rocks as mapped in NBMG B78
NO.
281
NAME Copper King mine
OTHER NAME Maggie
Creek prospect
COUNTY Eureka
LOCATION SE¼ SE¼
Sec. 28, T34N, R51E
UTMN 4516680
UTME
564300
DISTRICT Maggie Creek
QUAD Schroeder
Mountain 7.5' (1968)
DEVELOPMENT 125 feet or more of surface
adit, a 200-foot vertical shaft, 850 feet of connecting drifts and crosscuts,
and several pits and trenches. One pit is 85 feet long, 65 feet wide, and 100
feet deep. Workings are for copper.
RADIOACTIVITY Background =
0.015 mR/hr; High = 0.25 mR/hr. A grab sample contained 0.06% U3O8. Berridge and
Wolverson (1982) report 92 ppm U3O8.
GEOLOGY Oxidized copper
minerals, principally chrysocolla, malachite, azurite, and cuprite, occur along
shear zones in chert, shale, and limestone units which are partially equivalent
to the Ordovician Vinini Formation. The ore bearing zone strikes N60ºE and dips
steeply northwest. The radioactivity is reportedly associated with secondary
copper minerals along a N45ºE, 70ºW fracture.
RADIOACTIVE MINERALS
Anomalously radioactive azurite, chrysocolla, cuprite, and
malachite
HOST ROCK Sedimentary: Ordovician chert, shale, and
limestone units
MAIN COMMODITIES Cu, Au
OTHER
COMMODITIES U(?)
OLD MAP NO.
209
REFERENCES AEC Report 3471; Powers, 1954; Roberts,
Montgomery, and Lehner, 1967; Bentz and others, 1983; Bentz and Tingley, 1983;
Garside, 1973; Berridge and Wolverson (1982)
NOTES UTMs for
mine; a radioactive locality ~500 m east of the mine is at 4516715N, 564181E.
NO. 282
NAME Gold
Quarry
OTHER NAME Maggie claims
COUNTY
Eureka
LOCATION Secs. 2, 3, T33N, R51E, and Secs. 34, 35, T34N,
R51E
UTMN 4514950
UTME
566070
DISTRICT Maggie Creek
QUAD Schroeder
Mtn. 7.5' (1968)
OTHER PRODUCTION 1936: 60 tons ore, 0.4 opt
Au, 0.8 opt Ag; 1985: 170,000 oz Au; 1988-94: Reported as combined Newmont Gold
Operations; 1994-96: Gold Quarry, Mac, and Tusc combined: 2,978,000 oz
Au
DEVELOPMENT Large open-pit gold mine
GEOLOGY
In brecciated jasperoid, tyuyamunite occurs as bright-yellow clots with
kingite, thin powdery coatings associated with phosphate minerals, and
relatively abundant pale yellow dustings on kazakhstanite and fervanite.
Metatyuyamunite occurs as a dull, yellow-brown dehydration product after bright
yellow tyuyamunite. Deep-green torbernite over time becomes pale-green
metatorbernite. Uraninite occurs as grain up to 2 microns across in sulfide-rich
barite breccia with galena, grenocktite, arsenopyrite, sphalerite, and pyrite.
The host rock of the Gold Quarry deposit is Ordovician-Devonian chert, shale,
siltstone, and impure carbonates, in part, Vinini Fm.
RADIOACTIVE
MINERALS metatorbnerite; metatyuyamunite; torbnerite; tyuyamunite;
uraninite
HOST ROCK Sedimentary: Ordovician-Devonian chert,
shale, siltstone, and impure carbonates, in part, Vinini Fm.
MAIN
COMMODITIES Ag, Au
OTHER COMMODITIES U
NBMG
SAMPLE 1560
REFERENCES Mason and others, 1996;
Castor and Ferdock, 2004; Bentz and others, 1983; Bentz and Tingley,
1983.
NOTES MRDS: 232287
NO.
283
NAME Goldstrike mine
OTHER NAME
BetzePost mine
COUNTY Eureka
LOCATION Secs.
24, 25, T36N, T49E, and Secs. 19, 30, T36N, 50E
UTMN
4536440
UTME 552600
DISTRICT
Lynn
QUAD Rodeo Creek NE 7.5' (1968); Rodeo Creek NW 7.5'
(1968)
OTHER PRODUCTION 1974, 1980-2003: 20,614,209 oz Au;
1989-92, 1994-03; 1,950,004 oz Ag
DEVELOPMENT Large open-pit
gold mine
GEOLOGY Uraninite occurs as grains up to 2 microns
disseminated in sulfide-rich barite breccia with galena, greenockite,
arsenopyrite, sphalerite, and pyrite. Also present is torbnerite in grass green
tabular crystals in up to 2 mm clusters with fluellite, hewettite,
leucophosphite, variscite and anatase.
RADIOACTIVE MINERALS
torbnerite; uraninite
HOST ROCK Sedimentary:
Ordovician-Devonian chert, shale, siltstone, and impure carbonates, in part
Vinini Fm.
MAIN COMMODITIES Ag, Au
OTHER COMMODITIES
U
REFERENCES Mason and others, 1996; Castor and Ferdock,
2004
NOTES MRDS: M242254
NO.
284
NAME Lucky Boy (Nos. 1-20)
OTHER NAME
Hoosac mine
COUNTY Eureka
LOCATION Sec.
12, T18N, R53E (unsurveyed). Occurrences may be in Secs. 13 and
14.
UTMN 4365680
UTME
589180
DISTRICT Eureka
QUAD Pinto Summit 7.5'
(1990)
OTHER PRODUCTION 1872-1882: 17,292 tons of mostly Ag ore
valued at $158,616
DEVELOPMENT Numerous inaccessible workings
developed during the 1870's, for silver.
RADIOACTIVITY
Background = 0.015 mR/hr; High = 0.15 mR/hr. Ore samples contained 0.06%
eU3O8.
GEOLOGY Orebodies rich in silver, lead, and arsenic
reportedly occurred along a vertical shear zone in the Ordovician Eureka
Quartzite. Anomalous radioactivity is found in altered areas, probably
associated with the shear zone.
HOST ROCK Sedimentary:
Ordovician Eureka Quartzite
MAIN COMMODITIES Ag, Au,
Pb
OTHER COMMODITIES U
OLD MAP NO.
210
REFERENCES AEC Report 3470; Nolan, 1962, p. 71; Mason and
others, 1996; Tingley and Smith, 1983a, b; Garside, 1973; Couch and Carpenter,
1943
NOTES MRDS: M242352
NO.
285
NAME Meikle mine
OTHER NAME Purple
Vein
COUNTY Eureka
LOCATION Sec. 13, T36N,
T49E
UTMN 4538830
UTME
552000
DISTRICT Lynn
QUAD Santa Renia Fields
7.5' (1970)
OTHER PRODUCTION 1996-2003: 5,187,826 oz Au;
1997-2003: 1,410,813 oz Ag
DEVELOPMENT Deep underground gold
mine
GEOLOGY Brannerite occurs as grains 1 to 10 microns across
with pyrite, apatite, and hydrothermal silica. The host rock is the Devonian
Popovich and Roberts Mountains Formations.
RADIOACTIVE MINERALS
brannerite
HOST ROCK Sedimentary: Devonian Popovich and Roberts
Mountains Fms.
MAIN COMMODITIES Ag, Au
OTHER
COMMODITIES Ba, Hg, Sb, U, Zn
REFERENCES Mason and
others, 1996; Castor and Ferdock, 2004
NOTES MRDS: RE00043
NO. 286
NAME Occurrence
(T18N, R52E)
OTHER NAME Mn prospect
COUNTY
Eureka
LOCATION Sec. 1, T18N, R52E
UTMN
4367418
UTME 580589
DISTRICT Fish
Creek
QUAD Spring Valley Summit 7.5'
(1990)
DEVELOPMENT Shallow shaft and prospect pit; for
manganese
RADIOACTIVITY 500 cps, about 10 times expected
background. Grab MnOx sample contained 53 ppm U3O8.
GEOLOGY
Anomalous radioactivity is associated with manganese oxide minerals in the
Silurian Lone Mountain Dolomite. Anomalous zinc was also
reported.
RADIOACTIVE MINERALS radioactive manganese
oxide
HOST ROCK Sedimentary: Silurian Lone Mountain
Dolomite
MAIN COMMODITIES Mn, Zn
OTHER COMMODITIES
U
REFERENCES Mitchell and Quade, 1982, no.
17.
NOTES
NO.
287
NAME Occurrence (T19N, R51E)
OTHER NAME
Unnamed prospect no. 1
COUNTY Eureka
LOCATION
Sec. 2, T19N, R51E
UTMN 4376940
UTME
569360
QUAD Hay Ranch 7.5' (1986)
DEVELOPMENT
Two prospect pits.
GEOLOGY Section 2 is underlain by
“Quaternary older alluvium.” Devonian Devils Gate Limestone outcrops in the
Mahogany Hills over a mile to the east.
HOST ROCK Sedimentary:
Quaternary older alluvium
MAIN COMMODITIES
U
REFERENCES Mason and others, 1996; Roberts and others,
1967
NOTES MRDS: M232275; UTMs from MRDS
NO. 288
NAME “east”
deposit
COUNTY Humboldt
LOCATION NE¼ SE¼ Sec.
25, T45N, R25E
UTMN 4267500
UTME
326020
DISTRICT Virgin Valley
QUAD Virgin
Valley 7.5' (1990)
RADIOACTIVITY Samples contained between
0.002 to 0.049% U. One sample contained 0.12% U. 1 of 2 largest anomalies in
southern Virgin Valley detected by airborne scintillometer.
GEOLOGY
The “east deposit” is exposed for a 40-acre area on the west slopes of
Rock Spring Table and is in a series of discontinuous opal lenses in the Upper
member of the Virgin Valley Fm. The lenses are from 0.1 to 4 feet thick and
appear to be as mush as 300 feet long. All of the uranium appears to have been
trapped in the opal.
RADIOACTIVE MINERALS Anomalously
radioactive opalized zones
HOST ROCK Sedimentary: Miocene Upper
member of the Virgin Valley Formation.
MAIN COMMODITIES
U
REFERENCES Cupp and others, 1977b; Staatz and Bauer,
1951b
NOTES UTMs sample site in Cupp and others (1977b). Likely
includes part of the Jack Crane claims.
NO.
289
NAME “west” deposit
COUNTY
Humboldt
LOCATION Secs. 24 and 25, T45N, R25E
UTMN
4628800
UTME 325400
DISTRICT Virgin
Valley
QUAD Virgin Valley 7.5' (1990)
RADIOACTIVITY
Samples contained between 0.002 to 0.047% U. 1 of 2 largest anomalies in
southern Virgin Valley detected by airborne scintillometer.
GEOLOGY
The “west deposit” is exposed for a distance of about 1 mile on the edge
of a gravel-covered pediment and is in the Upper member of the Virgin Valley Fm.
In a 20-foot-thick stratigraphic section, uranium was found in several 0.1 to
3.9-foot-thick opal beds interbedded with tuffs. Minor amounts of carnotite were
found, but much of the uranium appears to have been trapped in the
opal.
RADIOACTIVE MINERALS Anomalously radioactive opalized
zones; carnotite
HOST ROCK Sedimentary: Miocene Upper member of
the Virgin Valley Formation.
MAIN COMMODITIES
U
REFERENCES Cupp and others, 1977b; Staatz and Bauer,
1951b
NOTES UTMs in approximate geographic center of sample
sites in Cupp and others (1977b). Likely includes parts of the Angie group,
April Fool group, Jack Crane claims, Gus Kreiger claims, and sample sites VV-2,
5, 6, 7, 9, 11, and C95-112, 113, 124
NO.
290
NAME Albesu prospect
COUNTY
Humboldt
LOCATION SE¼ Sec. 21, T47N, R34E
UTMN
4643094
UTME 403486
DISTRICT
Disaster
QUAD Disaster Peak 7.5' (1991)
DEVELOPMENT
Bulldozer cuts for mercury
RADIOACTIVITY Radioactivity
to 1.5 times background; cU3O8 to 88 ppm.
GEOLOGY Anomalous
uranium values and slightly anomalous radioactivity is found in the vicinity of
mercury prospects in welded ash-flow tuff. The uranium values are associated
with iron-oxide minerals. This is apparently the prospect shown by Rytuba (1976,
fig. 2) about 2 mi. southeast of Disaster Peak.
HOST ROCK
Volcanic: ash-flow tuff
MAIN COMMODITIES Hg
OTHER
COMMODITIES U
OLD MAP NO. 217D
REFERENCES
Castor and others, 1982, no. 1.
NOTES Geographic
coordinates from Castor and others, 1982. Mislocated in Garside (1979), no.
217D.
NO. 291
NAME Allied
group (Nos. 1-22)
COUNTY Humboldt
LOCATION
Secs. 6(?) and 7(?), T41N, R30E; reported location probably incorrect. Possibly
in T41N, R28E
UTMN 4589500
UTME
360500
DISTRICT Leonard Creek
QUAD Leonard
Creek Slough North 7.5' (1980)
DEVELOPMENT Location
pits(?).
RADIOACTIVITY Background = 0.02 to 0.03 mR/hr; High =
0.06 to 0.09 mR/hr
GEOLOGY Slight radioactivity reportedly
occurs in tuffs and rhyolites. Iron oxides and opal are also present.
HOST
ROCK Volcanic: tuffs and rhyolites
MAIN COMMODITIES
U
OLD MAP NO. 224
REFERENCES AEC Report 3486;
Mason and others, 1996; Garside, 1973.
NOTES MRDS: M029076;
Exact location uncertain; UTMs from near the approximate center of sections 6
and 7.
NO. 292
NAME Angie
group (3 claims)
OTHER NAME Angie Nos. 1-3
claims.
COUNTY Humboldt
LOCATION Sec. 24,
T45N, R25E
UTMN 4629280
UTME
325820
DISTRICT Virgin Valley
QUAD Virgin
Valley 7.5' (1990)
DEVELOPMENT Prospect pits.
GEOLOGY
Anomalous radioactivity occurs in an opalized tuff bed in the Virgin
Valley Formation. See descriptions for Jack Crane claims and Lode Star Uranium
claims.
RADIOACTIVE MINERALS Anomalously radioactive opalized
zones
HOST ROCK Sedimentary: Miocene Virgin Valley
Formation.
MAIN COMMODITIES U
REFERENCES
Tuchek and others, 1984; Garside, 1973.
NOTES
NO. 293
NAME April Fool group (3
claims)
OTHER NAME April Fool Nos. 1-3 claims.
COUNTY
Humboldt
LOCATION Sec. 25, T45N, R25E
UTMN
4628160
UTME 326000
DISTRICT Virgin
Valley
QUAD Virgin Valley 7.5' (1990)
DEVELOPMENT
Prospect pits.
GEOLOGY Anomalous radioactivity occurs in
an opalized tuff bed in the Virgin Valley Formation. See descriptions for Jack
Crane claims and Lode Star Uranium claims.
RADIOACTIVE MINERALS
Anomalously radioactive opalized zones
HOST ROCK Sedimentary:
Miocene Virgin Valley Formation.
MAIN COMMODITIES Opalite,
U
REFERENCES Tuchek and others, 1984; Garside,
1973.
NOTES
NO.
294
NAME Barbara and Hal group (11 claims)
OTHER NAME
CC Mines claim; Barbara claim; Barbara Nos. 1-4 claims; Hal claim; Hal
Nos. 1-7 claims; Virgin Valley uranium claims.
COUNTY
Humboldt
LOCATION Sec. 18, T45N, R26E
UTMN
4630590
UTME 326600
DISTRICT Virgin
Valley
QUAD Virgin Valley 7.5' (1990)
DEVELOPMENT
Prospect pits.
RADIOACTIVITY Background = 0.007 mR/hr;
High = 0.03 mR/hr. A select sample contained 0.01% eU3O8.
GEOLOGY
Anomalous radioactivity occurs in an opalized tuff bed in the Virgin
Valley Formation. See descriptions for Jack Crane claims and Lode Star Uranium
claims.
RADIOACTIVE MINERALS Anomalously radioactive opalized
zones
HOST ROCK Sedimentary: Miocene Virgin Valley
Formation.
MAIN COMMODITIES U
OLD MAP NO.
212
REFERENCES AEC Report 3480; Cathrall and others, 1977;
Tuchek and others, 1984; Garside, 1973.
NOTES
NO. 295
NAME Big Bend
Spring
COUNTY Humboldt
LOCATION Sec. 23, T45N,
R34E
UTMN 4624420
UTME
407750
DISTRICT Disaster
QUAD Jordan Meadow
Mountain 7.5' (1991)
DEVELOPMENT Bulldozer
cuts
RADIOACTIVITY 5 times background
GEOLOGY
A uranium prospect was shown by (Rytuba, 1976, fig. 2) in this area. Castor and
others (1982) reported uranium mineralization associated with iron oxides,
silicification, and carbonate minerals in rhyolitic ash-flow tuff. A trace of
rutile and sulfides was observed.
HOST ROCK Volcanic: Tertiary
ash-flow tuff
MAIN COMMODITIES U
OLD MAP NO.
217C
REFERENCES Rytuba, 1976; Garside, 1979; Willden, 1964;
Castor and others, 1982, no. 7.
NOTES Location from Castor and
others as plotted on topographic map.
NO.
296
NAME Blackbird group (Nos. 1-6)
COUNTY
Humboldt
LOCATION Sec. 14(?), T39N, R25E
UTMN
4570000
UTME 324500
DISTRICT Black
Rock
QUAD Big Mountain 7.5' (1972)
RADIOACTIVITY
Background = 0.03 mR/hr; High = 1.0 mR/hr. A sample of charcoal(?) from
volcanic rocks contained 0.06% eU3O8.
GEOLOGY Anomalous
radioactivity is reported from a thick sequence of flows, tuffs, and
agglomerates. The radioactivity may in part be associated with charcoal material
between flows or ash-flow tuffs. Iron and manganese oxides are also
reported.
RADIOACTIVE MINERALS Anomalously radioactive
carbonaceous material(?)
HOST ROCK Volcanic: thick sequence of
flows, tuffs, and agglomerates
MAIN COMMODITIES Fe, Mn,
U
OLD MAP NO. 215
REFERENCES AEC Report 3482;
Mason and others, 1996; Garside, 1973.
NOTES MRDS: M029067;
Exact location uncertain; UTMs from near the center of Sec. 14.
NO. 297
NAME Blue Jack
property
OTHER NAME Blue Jack group
COUNTY
Humboldt
LOCATION SW¼ Sec. 14, T41N, R27E
UTMN
4592410
UTME 344340
DISTRICT
Varyville
QUAD Battle Creek Ranch 7.5'
(1982)
DEVELOPMENT Two adits.
RADIOACTIVITY As
high as 0.3 mR/hr. Assays of 0.14 and 0.185% cU3O8 reported.
GEOLOGY
Anomalous radioactivity (up to 0.3mR/hr) reportedly varies directly with
secondary copper minerals. Chrysocolla, azurite, chalcocite, malachite,
limonite, quartz, and torbernite(?) are present along 3- to 10-foot-wide shear
zone between silicified limestone(?) and a diorite.
RADIOACTIVE
MINERALS Anomalously radioactive chrysocolla, azurite, chalcocite,
limonite, and malachite; torbernite(?)
HOST ROCK
Sedimentary/Intrusive: silicified limestone(?); diorite
MAIN
COMMODITIES Cu, Fe, U
NBMG SAMPLE 2957
OLD MAP
NO. 223
REFERENCES AEC Report 3488; Willden, 1964,
p. 89; Bonham and others, 1985; Mason and others, 1996; Garside, 1973; Castor
and others, 1982, no. 15.
NOTES MRDS: M029075
NO. 298
NAME Buff
Peak
OTHER NAME Buff Peak uranium-main
occurrence
COUNTY Humboldt
LOCATION Sec. 2,
T40N, R32E
UTMN 4580460
UTME
386620
DISTRICT Bottle Creek
QUAD Bottle Creek
Ranch 7.5' (1990)
DEVELOPMENT Several large bulldozer
cuts.
RADIOACTIVITY Background = 240-450 cps; High =
2,100-4,000 cps. Select samples contained up 0.17% U3O8. Rhyolite contains up to
22 ppm U3O8 and 49 ppm Th.
GEOLOGY Silica veins cut buff to
light purple, thin-bedded sandstone of probable Permian age and the basal
vitrophyre of a rhyolitic ash-flow tuff sequence. Minerals include
meta-autunite, brannerite, and weeksite. Thorite occurs as a uranium-bearing
trace accessory in topaz rhyolite.
RADIOACTIVE MINERALS
brannerite; meta-autunite; thorite; weeksite.
HOST ROCK
Sedimentary/Volcanic: Permian sandstone; Tertiary rhyolite ash-flow
MAIN
COMMODITIES U
REFERENCES Castor and Ferdock, 2004;
Castor and others, 1982, 1996
NOTES MRDS: M029077
NO. 299
NAME Cactus group (Nos.
1-12)
COUNTY Humboldt
LOCATION Sec. 26, T46N,
R25E
UTMN 4638923
UTME
327236
DISTRICT Virgin Valley
QUAD Thousand
Creek Springs 7.5' (1990)
DEVELOPMENT Shallow bulldozer
cuts.
RADIOACTIVITY Background: 0.006 mR/hr; High = 0.015
mR/hr. Two samples contained 0.05 and 0.09% eU3O8. Castor and others (1982)
samples contained up to 250 ppm U3O8 from an area having 5 times background
radioactivity.
GEOLOGY Slight radioactivity is reported from
volcaniclastic sedimentary rocks just above rhyolitic volcanic rocks.
HOST
ROCK Sedimentary: Tertiary sedimentary rocks
MAIN
COMMODITIES U
OLD MAP NO. 219
REFERENCES
AEC Report 3481; Mason and others, 1996; Garside, 1973; Castor and
others, 1982, no. 12
NOTES MRDS: M029071; Location from Castor
and others (1982), Section projected on Vya 30'x60'. Prospects shown to north on
Thousand Creek Spring Quad.
NO.
300
NAME Chevron Resources deposit
OTHER NAME
Horse Creek occurrences; Wide-Awake-Betty Brown group; Kings Valley Project;
Western Uranium Corp.
COUNTY Humboldt
LOCATION
Secs. 21, 27, 28, 33, T46N, R34E
UTMN 4632321
UTME
404055
DISTRICT Disaster
QUAD Calavera
Canyon 7.5' (1991)
U RESOURCES/ RESERVES 1978: 11,400,000 lbs.
U in 5,750,000 tons at 0.1% U3O8 in two pods.
DEVELOPMENT
Bulldozer roads and several thousand feet of drill
holes.
RADIOACTIVITY Up to 0.1% U reported.
GEOLOGY
In 1976 uranium mineralization was encountered in drill holes along Horse
Creek several miles north of the Moonlight Mine, in King's River Valley. The
mineralization is associated with an extensive area of potassium feldspar
alteration, and occurs in fractures and breccia zones in porphyritic,
peralkaline rhyolite domes and hypabyssal intrusive rocks. These domes were
emplaced along a probable ring-fracture in the western part of the McDermitt
caldera complex in the period from 14.0 to 13.7 Ma. A small volume ash-flow tuff
associated with these domes is altered to potassium feldspar and quartz,
reportedly contains up to 0.1% uranium. The main uranium mineralization at the
Horse Creek occurrences is reported to be pyrite-uraninite; a number of other
elements are anomalous, including Mo, F, Hg, As, Sb, Ba, Ag, Zr. Fluid
inclusions in quartz from ore at the Moonlight Mine, related occurrences to the
south indicate a deposition temperature of 330ºC, and stratigraphic evidence
indicates that the Moonlight deposit formed at a shallow depth of about 2600
feet. Tonnage and grade figures have not been announced, although possible mill
sites have been investigated by Chevron. Mo-porphyry mineralization was
reportedly encountered in deep drill holes in the vicinity of the Moonlight Mine
to the south. The McDermitt caldera complex is a Miocene collapse structure 27
miles in diameter. Large-volume rhyolitic and peralkaline ash-flow tuffs were
erupted from 17.9-15.8 Ma, leading to the formation of overlapping and nested
calderas. The rhyolitic ring domes are the last phase of the volcanic activity,
and emplaced mainly along the west margin of the complex about 14-14 Ma. The
complex is the site of large Hg deposits, an ore deposit and several occurrences
of uranium and, and widespread occurrences of lithium. Uranium exploration
activity has been concentrated in the vicinity of the Moonlight Mine and Horse
Creek occurrences, and to the north in the vicinity of the Bretz and Opalite Hg
mines, near Cottonwood Creek in Oregon about 3 miles north of the Nevada state
line.
RADIOACTIVE MINERALS pyrite-uraninite
HOST ROCK
Volcanic/Intrusive: peralkaline rhyolite domes; hypabyssal intrusive
rocks
MAIN COMMODITIES Au, Ba, U
NBMG SAMPLE
2415
OLD MAP NO. 217B
REFERENCES Bonham and
others, 1985; Mason and others, 1996; Garside, 1979; Castor and others, 1982,
no. 3.; Western Uranium Corp, 2006a, 2006c.
NOTES MRDS:
M242565; UTMs from Castor and others, 1982.
NO.
301
NAME Crowley Creek area
COUNTY
Humboldt
LOCATION T44 and 45N, R36E; near Crowley
Creek
UTMN 4629000
UTME 419000
QUAD
Jordan Meadow 7.5' (1991)
GEOLOGY Hydrothermal
alteration (clinoptilolite and, locally, potassium feldspar) is associated with
anomalous concentrations of As, Sb, U, Be, and Hg in upper Tertiary sedimentary
rocks. A 1979 examination of the area did not find any anomalous radioactivity
(L.J. Garside, unpubl. data).
RADIOACTIVE MINERALS
uranium-bearing clinoptilolite and potassium feldspar
HOST ROCK
Sedimentary: Tertiary sedimentary rocks
MAIN COMMODITIES
U
OLD MAP NO. 221D
REFERENCES Rytuba and
others, 1979; Garside, 1979.
NOTES Exact location uncertain;
UTMs from near the point Crowley Creek is near the line of the two townships. A
possible location is SW¼ Sec. 35, T46N, R35E where radioactivity is 1.5 times
background (J. McGlasson, oral commun.)
NO.
302
NAME Etchart claims
COUNTY
Humboldt
LOCATION Sec. 6, T35N, R41E
UTMN
4531626
UTME 465578
DISTRICT
Golconda
QUAD Golconda 7.5' (1981)
DEVELOPMENT
Prospect
RADIOACTIVITY Select sample contained 19 ppm
U
GEOLOGY Slightly anomalous uranium was found at a turquoise
prospect.
HOST ROCK Sedimentary
MAIN COMMODITIES
Cu, U
REFERENCES Berridge and Wolverson, 1982; Erickson
and Marsh, 1974.
NOTES
NO.
303
NAME Foster property
OTHER NAME
Snow Creek
COUNTY Humboldt
LOCATION Border of
Secs. 35, 36, T43N, R28E
UTMN 4607460
UTME
356160
DISTRICT Leonard Creek
QUAD Bishop Peak
7.5' (1990)
DEVELOPMENT Drill holes
RADIOACTIVITY
High radioactivity is reported, with assays of up to 0.18% reported. A
sample reportedly from this locality contained 5.48% eU3O8 (2.81% cU3O8). Five
samples of silicified breccia ranged from 52 ppm-0.11% U3O8
GEOLOGY
A radioactive locality is reported from a small roof pendant of Happy
Creek Volcanic Series in Duffer Peak Granodiorite, as well as in the main mass
of the Happy Creek Volcanic Series just to the south of the
granodiorite-volcanic series contact (fault? contact). A nearby spring is also
reportedly radioactive. A variety of secondary uranium minerals, including
uranyl phosphates, arsenates, and silicates are reported; coffinite was
tentatively identified. A breccia of black shale clasts with pyrite contained
0.11% U3O8.
RADIOACTIVE MINERALS uranyl phosphates, arsenates,
and silicates; coffinite(?)
HOST ROCK Volcanic: Happy Creek
Volcanic Series slates
MAIN COMMODITIES U
OLD MAP NO.
222
REFERENCES AEC Report 3485; Chiaki Fufikawa, oral
commun., 1977; Smith, 1973; Mason and others, 1996; Castor and others, 1982, no.
14; Garside, 1973; 1979.
NOTES MRDS: M029074; Exxon staked
claims to the north in the late 1970s.
NO.
304
NAME Four Leaf Clover group (Nos. 1-60)
COUNTY
Humboldt
LOCATION Sec. 7, T40N, R25E
UTMN
4584545
UTME 318534
DISTRICT Black
Rock
QUAD Soldier Meadow 7.5' (1972)
DEVELOPMENT
Extensive bulldozer cuts reported.
RADIOACTIVITY
Background = 0.015 mR/hr; High = 0.5 mR/hr. Up to 37 ppm
cU3O8.
GEOLOGY Anomalous radioactivity occurs in clay-altered
air-fall tuff and overlying ash-flow tuff (Soldier Meadows
Tuff).
RADIOACTIVE MINERALS Anomalously radioactive opalized
zones
HOST ROCK Sedimentary: Miocene Virgin Valley
Formation.
MAIN COMMODITIES U
OLD MAP NO.
213
REFERENCES AEC Report 3483; Mason and others, 1996;
Garside, 1973; Castor and others, 1982.
NOTES MRDS: M029065;
Location from Castor and others (1982). The location has also been reported as
Secs. 2, 3, 10, 11, T41N, R25E
NO.
305
NAME Getchell mine
OTHER NAME South
pit
COUNTY Humboldt
LOCATION SE¼ SW¼ Sec. 33,
T39N, R42E
UTMN 4561710
UTME
478820
DISTRICT Potosi
QUAD Adam Peak 7.5'
(1988)
OTHER PRODUCTION 1938-50, 1962-67: 788,875 oz Au;
1987-2002: 1,660,219 oz Au; 1989, 1992-95, 1998, 2000-03: 419,334 oz
Ag
DEVELOPMENT Open pit for gold.
RADIOACTIVITY
Anomalies reported range from 75 cps to 400 cps. Assays of 0.021, 0.049,
and 0.080% eU3O8 were reported. A select hand sample was about 10 times
background radioactivity.
GEOLOGY Four small anomalies having
slight radioactivity were reported at the south end of the main fault, which
trends north-south and dips 40°-60°E. This radioactivity appears to be
associated with pyrite or marcasite mineralization in the Cambrian Preble
Formation. Sheet-like gold orebodies with abundant arsenic sulfide are localized
along the main fault. A sample of phyllite from the east wall of the south pit
contained ilsemmanite and autunite(?), and meta-autunite also occurs there with
ilsemmanite and pascoite.
RADIOACTIVE MINERALS Anomalously
radioactive pyrite or marcasite mineralization; autunite(?);
meta-autunite
HOST ROCK Sedimentary: Cambrian Preble
Formation
MAIN COMMODITIES Ag, Au
OTHER COMMODITIES
U
OLD MAP NO. 228
REFERENCES AEC Report
3497, 3497a; Willden, 1964; Erickson and others, 1964; Bonham and others, 1985;
Mason and others, 1996; Garside, 1973; 1979, 1982; Castor and Ferdock,
2004.
NOTES MRDS: M055410
NO.
306
NAME Golconda Hot Spring
OTHER NAME
Harris property
COUNTY Humboldt
LOCATION SE¼
NE¼ Sec. 32, T36N, R40E; just northwest of town of Golconda.
UTMN
4533600
UTME 458800
DISTRICT
Golconda
QUAD Golconda 7.5' (1981)
RADIOACTIVITY
Background = 40 cps; High = 450 cps. Water contains 0.09 ug/L
U
GEOLOGY This spring and its deposits are reported to be
moderately radioactive. The water reportedly contains a few parts per million of
thorium (oral commun., D. I. Segerstrom).
RADIOACTIVE MINERALS
thorium dissolved in water
HOST ROCK Sedimentary: hot springs
deposits (SPRING)
MAIN COMMODITIES Th, U
OLD MAP NO.
227
REFERENCES Davis, 1954; AEC Report N-SL-17; Bonham
and others, 1985; Mason and others, 1996; Garside, 1973; Felmlee and Cardigan,
1978; Berridge and Wolverson, 1982.
NOTES MRDS: M232583
NO. 307
NAME Granite Point
claims
COUNTY Humboldt
LOCATION Secs. 4, 5(?),
T45N, R34E
UTMN 4629160
UTME
403320
DISTRICT Disaster
QUAD Calavera Canyon
7.5' (1991)
DEVELOPMENT Several thousand feet of bulldozer
trenches, and six diamond-drill holes averaging 200 feet in depth and inclined
to the east, at the base of the rhyolite cliffs.
RADIOACTIVITY
A small area measured as high as 0.30 mR/hr, and this contained 0.024%
U3O8.
GEOLOGY A rhyolitic unit, which reportedly contains
individual flows up to 150 feet thick, has a background that is 3 to 4 times the
radioactivity commonly found in basin-and-range rhyolites. Surrounding rocks
give readings of 0.035 mR/hr while the rhyolite averages 0.1 mR/hr. The
rhyolitic unit may be peralkaline ash-flow tuff. Anomalous trace elements are
similar to those at the Moonlight Mine.
RADIOACTIVE MINERALS
boltwoodite or weeksite(?)
HOST ROCK Volcanic: rhyolitic
unit
MAIN COMMODITIES U
OLD MAP NO.
217A
REFERENCES Willden, 1964, p. 132 and 135; Taylor and
Powers, 1955; Bonham and others, 1985; Mason and others, 1996; Garside, 1973;
1979.
NOTES MRDS: M029069
NO.
308
NAME Gus Kreiger claims (132 claims)
OTHER
NAME Charlawne; Charlotte Nos. 1-22; Donkey; East Rim Nos. 1-11,
13-23, 25-35, 37-47, 49-59; Jackass; Jane Nos. 1-13; Mars; Mule; Neptune;
Saturn; South Rim Nos. 1-20; Venus; Pluto; Virgin Valley uranium
claims.
COUNTY Humboldt
LOCATION Secs. 25, 36,
T45N, R25E, and Secs. 29, 30, 31, T45N, R26E
UTMN
4626500
UTME 326500
DISTRICT Virgin
Valley
QUAD Virgin Valley 7.5' (1990)
DEVELOPMENT
Prospect pits.
GEOLOGY Anomalous radioactivity occurs in
an opalized tuff bed in the Virgin Valley Formation. See descriptions for Jack
Crane claims and Lode Star Uranium claims.
RADIOACTIVE MINERALS
Anomalously radioactive opalized zones
HOST ROCK Sedimentary:
Miocene Virgin Valley Formation.
MAIN COMMODITIES
U
REFERENCES Tuchek and others, 1984; Garside,
1973.
NOTES UTMs from approximate center of sections containing
claims. In part overlap Jack Crane claims.
NO.
309
NAME Iron King mine
OTHER NAME IC
claims
COUNTY Humboldt
LOCATION SW¼ SW¼ Sec.
9, T46N, R34E
UTMN 4636400
UTME
402400
DISTRICT Disaster
QUAD Disaster Peak
7.5' (1991)
DEVELOPMENT Three sets of old adits and shafts,
drill roads and numerous drill holes.
GEOLOGY Mixture of
rhyolite and possibly andesite(?), with white quartz veins in fault structures.
Pyrite on wall rock.
HOST ROCK Volcanic: rhyolite and possibly
andesite(?).
MAIN COMMODITIES Au(?), U
NBMG SAMPLE
2416
REFERENCES Bonham and others, 1985; Mason and
others, 1996
NOTES MRDS: M242566
NO. 310
NAME Iron
Point
COUNTY Humboldt
LOCATION Sec. 12, T35N,
R41E
UTMN 4530083
UTME
473196
DISTRICT Iron Point
QUAD Iron
Point
DEVELOPMENT Large bulldozer cuts
RADIOACTIVITY
Up to 10 times background. U308 analyses to 2130 ppm.
GEOLOGY
Carnotite is found as fracture coatings in dark, carbonaceous shale of
the Ordovician Vinini Formation. Quartz stringers are present, but the carnotite
was interpreted to have been leached from overlying tuffs.
RADIOACTIVE
MINERALS carnotite
HOST ROCK Sedimentary: Ordovician
Vinini Formation
MAIN COMMODITIES U
REFERENCES
Berridge and Wolverson, 1982.
NOTES
NO. 311
NAME Jack Crane claims
(52 claims)
OTHER NAME Crane claims; Monday; Tuesday;
Wednesday; Thursday; Friday Saturday; Wee Wee Marie; September; October; March;
4th of July Nos. 1 and 2 February; April Fool Nos. 1 and 2; January; November;
August; December; Tony Jack Group; Virgin Valley uranium
claims.
COUNTY Humboldt
LOCATION Secs. 24, 25,
36, T45N, R25E (unsurveyed).
UTMN 4627500
UTME
325700
DISTRICT Virgin Valley
QUAD Virgin
Valley 7.5' (1990)
DEVELOPMENT Numerous bulldozer
trenches.
RADIOACTIVITY Background = 0.015-0.05 mR/hr; High =
0.90 mR/hr. Samples as high as 0.14% U3O8 are reported, but many analyses are in
the 0.02-0.03% range. A sample with uranium minerals contained 1%
U3O8.
GEOLOGY Anomalous radioactivity and secondary uranium
minerals (carnotite and schroeckingertie?) are reportedly associated with
opalized units in a sequence of fine-grained lacustrine tuffs in the middle
Miocene (Merriam, 1911, p. 208) Virgin Valley beds. Carnotite commonly occurs as
fracture coatings or as thin layers in the opal. The uraniferous opal is in
discontinuous layers, as much as 6 feet thick and half a mile long, that are
parallel to the bedding of the ash and tuff (Staatz and Bauer, 1954b). More than
a third of the opalized beds examined were radioactive. The opal may be gray,
brown, tan, black, white, and pale green, and may be banded or variegated. The
pale green variety apparently contains the most uranium. Opalized fossil wood
was noted in some areas.
RADIOACTIVE MINERALS Anomalously
radioactive opalized zones; carnotite; schroeckingertie(?); meta-autunite;
weeksite(?); saleeite(?); coffinite(?)
HOST ROCK Sedimentary:
Miocene Virgin Valley Formation.
MAIN COMMODITIES U
OLD
MAP NO. 211
REFERENCES AEC Reports 3498, 3498a,
3499, 3499a, 3487; Staatz and Bauer, 1951b, 1954b; Davis, 1954; Davis and
Hetland, 1956, p. 358; Finch, 1967; Wyant, Beroni, and Granger, 1952, p. 29;
McKelvey, 1957; Cathrall and others, 1977; Cupp and others, 1977b; Henry, 1978;
Tuchek and others, 1984; Mason and others, 1996; Garside, 1973; Castor and
Ferdock, 2004; Castor and others, 1982.
NOTES MRDS: M029063;
UTMs from approximate center of sections containing claims. In part overlap Gus
Kreiger claims.
NO. 312
NAME
Kim claims (Nos. 1-9)
COUNTY Humboldt
LOCATION
Sec. 23, T45N, R24E
UTMN 4630300
UTME
314000
QUAD Gooch Lake 7.5' (1990)
DEVELOPMENT
Five shallow bulldozer cuts
RADIOACTIVITY Background = 0.02 to
0.04 mR/hr; 5 samples contained a trace of Au and Ag and less than 0.005%
U3O8.
GEOLOGY Basalt cap over rhyolite tuff and
breccia.
HOST ROCK Volcanic: basalt; rhyolite tuff and
breccia.
MAIN COMMODITIES Ag, Au, U
REFERENCES
Tuchek and others, 1884
NOTES MRDS: M232608; Exact location
uncertain; UTMs from near the center of Sec. 23.
NO. 313
NAME Margale
prospect
COUNTY Humboldt
LOCATION Sec. 36,
T35N, R31E; Exact location uncertain This prospect is also reported in Sec. 6,
T34N, R31E
UTMN 4524500
UTME
377500
DISTRICT Sawtooth
QUAD Long Canyon 7.5'
(1971)
DEVELOPMENT An inclined shaft, and an adit about 100
feet long.
RADIOACTIVITY Background = 0.009 mR/hr; High = 0.02
mR/hr. A grab sample contained only a trace of eU3O8.
GEOLOGY
Slight radioactivity is present in a highly brecciated shale. Gypsum, quartz,
and iron oxides are also present.
HOST ROCK Sedimentary: highly
brecciated shale
MAIN COMMODITIES U
OLD MAP NO.
226
REFERENCES AEC Report 3730; Mason and others, 1996;
Garside, 1973.
NOTES MRDS: M232712; Exact location uncertain;
UTMs from near the center of Sec. 36.
NO.
314
NAME McDermitt Mine
OTHER NAME Cordero
Mine
COUNTY Humboldt
LOCATION Secs. 28, 33,
T47N, R37E
UTMN 4641150
UTME
432600
DISTRICT Opalite
QUAD Cordero Mine 7.5'
(1991)
OTHER PRODUCTION 1975-1990: Over 300,000 flasks
Hg
DEVELOPMENT Large open-pit mercury
mine
RADIOACTIVITY Up to 192 ppm U
GEOLOGY The
McDermitt Mine contains cinnabar and corderoite in argillically altered Tertiary
sedimentary rocks which are caldera-fill sediments within the McDermitt caldera
complex. Native mercury and mercury oxychlorites occur, but are uncommon.
Strongly silicified rocks (opalite) are adjacent to the mercury ore. Fluid
inclusion studies indicate a deposition temperature of 200ºC, at a depth of at
least 500 feet. Uranium values up to 192 ppm are reported in the McDermitt zone
of alteration (Garside, 1982b); apparently these values are for mineralization
in the vicinity of Thacker Pass (Yellow Star prospect?) ~22 km to the southwest
(J. Rytuba, oral commun., 1979). A minute amount of an unidentified uranium
mineral was reported from the intrusive footwall rhyolite, which is exposed near
the underground workings of the Cordero Mine (Fisk, 1968) adjacent to the
open-pit McDermitt Mine. The uranium and mercury mineralization are believed to
be related, and similar relationships are reported from the Bretz, Cottonwood
Creek, and Opalite areas in Oregon, approximately 15 miles northwest of the
McDermitt Mine.
RADIOACTIVE MINERALS related uranium and
mercury mineralization; unidentified uranium mineral
HOST ROCK
Sedimentary: Tertiary caldera-fill sediments
MAIN COMMODITIES
Hg
OTHER COMMODITIES Li, U
OLD MAP NO.
221B
REFERENCES Rytuba and others, 1979; Rytuba, 1976; Bonham
and others, 1985; Mason and others, 1996; Garside, 1979, 1982b; Lowe and others,
1984; Nevada Bureau of Mines and Geology, 1991; Fisk, 1968; Lindsey,
1974
NOTES MRDS: M054731
NO.
315
NAME Montana Mountains
COUNTY
Humboldt
LOCATION Sec. 4, T45N, R34E
UTMN
4628954
UTME 404356
DISTRICT
Disaster
QUAD Calavera Canyon 7.5'
(1991)
RADIOACTIVITY 3-4 times background; select samples
contain up to 0.02% U3O8.
GEOLOGY Uranium mineralization is
found in rhyolitic ash-flow tuff associated with silicification, barite,
apatite, and ilmenite. As, Sb, F, Hg, and Mo are anomalous.
RADIOACTIVE
MINERALS uraniferous zirconium mineral
HOST ROCK
Volcanic: Tertiary ash-flow tuff
MAIN COMMODITIES
U
REFERENCES Castor and others, 1982
NOTES At
top of cliff overlooking Granite Point occurrence.
NO. 316
NAME Moonlight
mine
OTHER NAME Moonlight group; Kings River area; Platora
mine; Forget-Me-Not claims; Kings Valley Project; Western Uranium
Corp.
COUNTY Humboldt
LOCATION S½ Sec. 9,
T45N, R34E
UTMN 4626620
UTME
403740
DISTRICT Disaster
QUAD Calavera Canyon
7.5' (1991)
U PRODUCTION 1954-1955: About 500 tons of uranium
ore. Several cars of ore were shipped by Platora Uranium Corp., but treatment
and shipping charges exceeded the value of the ore.
U RESOURCES/
RESERVES 1979: Area resource: 5,700,000 lbs. U in 2,860,000 tons at
0.1% U3O8
DEVELOPMENT One small adit and several inclined
shafts.
RADIOACTIVITY Background = 30 cps; High = 2600 cps.
Assays ranged from 0.07 to 0.22% U3O8. Radiometric assays are often 10 to 50%
above chemical, but a few radiometric measurements are slightly less than
chemical results.
GEOLOGY Uranium mineralization occurs in a
silicified breccia zone in the hanging wall of a north-trending fault which
displaces Tertiary rhyolitic ash-flow tuffs. The rhyolitic rocks overlie a
Jurassic(?) quartz monzonite or granodiorite, which is present at depth in some
of the workings. The mineralized fault dips from 45º to 54ºE near the surface,
but the dip steepens to 60ºE in the inclined shaft. Anomalous radioactivity was
noted in the hanging wall for 225 feet along the fault (surface measurement).
Displacement along this fault is more than 2,000 feet since the late Miocene
(Yates, 1942). The fault is considered to be part of the ring-fracture system of
the McDermitt Caldera. Autunite, meta-autunite, coffinite, torbernite, and
gummite are present with pyrite, iron oxides, clays, quartz, and dark purple
fluorite. Autunite is reportedly more common near the surface. It has been
proposed that uraninite may be present at depth. Uranium-rich zircon occurs as a
microgranular, hydrothermal mineral in haloes around clasts and as crustiform
layers in radioactive breccia with quartz adularia, arsenopyrite, calcite and
others minerals, including galena, sphalerite, barite, and mercury sulfide. The
ore is anomalous in Sb, As, Mo, Ag, and most samples have anomalous Ba, Cu, F,
Hg, P, Sn, W, and Zr. Two samples contain high Au.
RADIOACTIVE
MINERALS Autunite; coffinite; gummite; meta-autunite; torbernite;
uraniferous zircon; uraninite(?)
HOST ROCK Volcanic: Tertiary
rhyolitic ash-flow tuffs
MAIN COMMODITIES U
OTHER
COMMODITIES Ag, Ba, Cu, Mn, Mo
NBMG SAMPLE
2414
OLD MAP NO. 216
REFERENCES Sharp, 1955;
Davis, 1954; Sharp, 1956, p. 80-82; AEC Report 3496; Powers, 1954; Willden,
1964, p. 135; Taylor and Powers, 1955; Yates, 1942; McKelvey, 1957;U.S Bureau of
Mines Minerals Yearbooks, 1953, 1954, 1955; Bonham and others, 1985; Mason and
others, 1996; Garside, 1973; Gallagher, 1954, 1955; Castor and others, 1982, no.
6; Castor and others, 2004; Schrader, 1977; Western Uranium Corp., 2006a,
2006c.
NOTES MRDS: M029068
NO.
317
NAME Nevada group (Nos. 1-43)
OTHER NAME
Buff Peak uranium-west occurrence
COUNTY
Humboldt
LOCATION Secs. 3(?), 10(?), T40N, R32E; west flank of
Buff Peak.
UTMN 4580000
UTME
384500
DISTRICT Bottle Creek
QUAD Parrot Peak
7.5' (1990)
DEVELOPMENT Several large bulldozer
cuts.
RADIOACTIVITY Background = 0.02 mR/hr; High = 0.40 mR/hr.
A 2-foot chip sample contained 0.02% eU3O8.
GEOLOGY Anomalous
radioactivity occurs along opalized lenses of Tertiary rhyolitic flows.
Uranophane is reported.
RADIOACTIVE MINERALS
uranophane
HOST ROCK Volcanic: Tertiary rhyolitic
flows
MAIN COMMODITIES U
OLD MAP NO.
225
REFERENCES AEC Report 3484; Bonham and others, 1985; Mason
and others, 1996; Garside, 1973.
NOTES MRDS: M029077; Exact
location uncertain; UTMs from near the center of sections 3 and 10.
NO. 318
NAME Occurrence (T41N,
R25E)
OTHER NAME Unnamed prospect
COUNTY
Humboldt
LOCATION Sec. 35, T41N, R25E
UTMN
4587000
UTME 324500
DISTRICT Black
Rock
QUAD Red Mountain 7.5' (1972)
GEOLOGY An
undescribed prospect is shown on the Vya sheet, 1: 250,000 scale topographic
map. This locality is in an area of volcanic rocks.
HOST ROCK
Volcanic: volcanic rocks.
MAIN COMMODITIES U(?)
OLD MAP
NO. 214
REFERENCES U.S. 1 :250,000 scale topographic
map, Vya sheet; Willden, 1964; Mason and others, 1996; Garside,
1973.
NOTES MRDS: M029066; Exact location uncertain; UTMs from
the center of Sec. 35.
NO.
319
NAME Occurrence (T41N, R29E)
OTHER NAME
Unnamed uranium prospect
COUNTY Humboldt
LOCATION
Sec. 5, T41N, R29E
UTMN 4596000
UTME
360300
DISTRICT Leonard Creek
QUAD Bishop Peak
7.5' (1990)
DEVELOPMENT Three large bulldozer pits about 50
feet long.
GEOLOGY Organic debris within the Tertiary lake
sediments reduced uranium from groundwater or evaporating lake solutions.
Bulldozer cuts in the lake sediments have exposed minor uranium
concentrations.
HOST ROCK Sedimentary: Tertiary lake
sediments
MAIN COMMODITIES U
REFERENCES Quade,
1984; Bonham and others, 1985
NOTES UTMs from Quade, 1984,
which are near some prospect symbols on topographic map.
NO. 320
NAME Occurrence (T47N,
R37E)
OTHER NAME Unnamed prospect
COUNTY
Humboldt
LOCATION NW¼ Sec. 28, T47N, R37E
UTMN
4641880
UTME 431760
DISTRICT
Opalite
QUAD Cordero Mine 7.5' (1991)
DEVELOPMENT
Several prospect pits, bulldozer cuts, and drill holes
(1979).
RADIOACTIVITY Very low in samples examined. Assays of
0.035% cU3O8 are reported.
GEOLOGY Small flakes of autunite(?)
were noted on fractures in specimens of a Tertiary tuffaceous shale, but the
amount present was too low to produce any anomalous radioactivity in hand
samples. No anomalous radioactivity was found in the white tuffaceous
sedimentary rocks during a 1979 visit (L. Garside, unpubl. data), and no
autunite was observed. Drill cuttings on ground were not anomalously
radioactive.
RADIOACTIVE MINERALS Autunite(?)
HOST
ROCK Sedimentary: Tertiary tuffaceous shale
MAIN
COMMODITIES U
OLD MAP NO. 221A
REFERENCES
Bonham and others, 1985; Mason and others, 1996; Garside, 1973; 1979,
1982b.
NOTES MRDS: M029073
NO.
321
NAME Old Man Spring
COUNTY
Humboldt
LOCATION Sec. 34, T47N, R34E
UTMN
4639595
UTME 404476
DISTRICT
Disaster
QUAD Disaster Peak 7.5' (1991)
DEVELOPMENT
Bulldozer cuts.
RADIOACTIVITY Up to 339 ppm
U3O8.
GEOLOGY Anomalous amounts of uranium were found in
sedimentary rocks that are part of the caldera moat fill of the McDermitt
Caldera. Clay altered(?) rocks, calcareous sediments, and sandstones contain
galena, barite, and several uranium- and thorium-bearing minerals (including
hydrothermal zircon, and monazite). Pyrite was observed in drill
cuttings.
RADIOACTIVE MINERALS zircon, monazite, thorium
silico-phosphate
HOST ROCK Sedimentary: caldera moat
fill
MAIN COMMODITIES U
REFERENCES Castor and
others, 1982, no. 2.
NOTES UTMs from Castor and others (1982).
NO. 322
NAME Pole
Creek
COUNTY Humboldt
LOCATION Sec. 2, T44N,
R35E
UTMN 4619993
UTME
415443
DISTRICT Disaster
QUAD Thacker Pass
7.5' (1991)
DEVELOPMENT Drill holes
RADIOACTIVITY
Background = 300 cps; High = 2800 cps. Analyses of up to 98 ppm
cU3O8.
GEOLOGY Anomalous radioactivity is found along
northeast-trending shears that dip steeply east in aphyric rhyolitic ash-flow
tuff. A uranium-bearing amorphous zirconium silicate mineral plus framboidal
pyrite, barite and limonite were reported.
RADIOACTIVE MINERALS
uranium-bearing zirconium silicate
HOST ROCK Volcanic:
peralkaline ash-flow tuff
MAIN COMMODITIES
U
REFERENCES Castor and others, 1982, no. 9
NOTES
UTMs from Castor and others (1982).
NO. 323
NAME Rock Creek uranium
occurrence
COUNTY Humboldt
LOCATION Sec. 25,
T45N, R35E; one of several occurrences.
UTMN
4624049
UTME 416761
DISTRICT
Disaster
QUAD Jordan Meadow Mountain 7.5'
(1991)
DEVELOPMENT Drill holes
RADIOACTIVITY
Background = 200-400 cps; outcrop from Rock Creek to point 1500 m SW = 400-4000
cps; outcrops for about 300 m along Rock Creek = 500-2000 cps; samples up to
0.019% U3O8 and 0.23% eU
GEOLOGY Amorphous zirconium silicate
carrying uranium. Peralkaline ash-flow tuff which is mostly aphyric with
flow-banded microgranular to granophyric texture, which overlies non-radioactive
tuffaceous shale and sandstone to the south. Silicification and argillization
are reported, as are pyrite, galena, chaclopyrite, and
limonite.
RADIOACTIVE MINERALS uranium-bearing zirconium
silicate
HOST ROCK Volcanic: peralkaline ash-flow
tuff
MAIN COMMODITIES U
OLD MAP NO.
221C
REFERENCES Mason and others, 1996; Garside, 1979; Castor
and others, 1982, no. 8.
NOTES MRDS M242676; UTMs from Castor
and others, 1982; Same as “Rock Creek area” occurrence of Garside (1979).
NO. 324
NAME Sample site
C95-112
OTHER NAME Uranium Lode Star claims(?)
COUNTY
Humboldt
LOCATION Sec. 24, T45N, R25E
UTMN
4628930
UTME 324900
DISTRICT Virgin
Valley
QUAD Virgin Valley 7.5' (1990)
RADIOACTIVITY
Sample assayed 189 ppm U; Th/U ratio is 0.06.
GEOLOGY
Carnotite, uranium silicate (soddyite(?)), and pyrite(?) in bedded tuff in
fluvial deposits in the Miocene Virgin Valley Formation.
RADIOACTIVE
MINERALS carnotite; uranium silicate (soddyite(?))
HOST
ROCK Sedimentary: Miocene Virgin Valley Formation
MAIN
COMMODITIES Th, U
REFERENCES Castor and others,
1996
NOTES
NO.
325
NAME Sample site C95-113
OTHER NAME Sample
site C95-114; Uranium Lode Star claims(?
COUNTY
Humboldt
LOCATION Sec. 24, T45N, R25E
UTMN
4629280
UTME 325430
DISTRICT Virgin
Valley
QUAD Virgin Valley 7.5' (1990)
RADIOACTIVITY
Sample C95-113 assayed 2,250 ppm U; sample C95-114 assayed 426 ppm U and
had Th/U ratio of 0.06.
GEOLOGY Sample C95-113 was of carnotite
and metaankoleite in framboid molds(?) in lignite. Sample C95-114 was of
carnotite, opal, and clinoptilolite in air-fall tuff. The samples were taken in
fluvial deposits in the Miocene Virgin Valley Formation.
RADIOACTIVE
MINERALS carnotite; uranium silicate (soddyite(?))
HOST
ROCK Sedimentary: Miocene Virgin Valley Formation
MAIN
COMMODITIES Th, U
REFERENCES Castor and others,
1996
NOTES
NO.
326
NAME Sample site C95-124
OTHER NAME
Uranium Lode Star claims(?)
COUNTY Humboldt
LOCATION
Sec. 24, T45N, R25E
UTMN 4629170
UTME
325360
DISTRICT Virgin Valley
QUAD Virgin
Valley 7.5' (1990)
RADIOACTIVITY Sample assayed 755 ppm
U
GEOLOGY Opalized wood with abundant pyrite framboids but no
obvious uranium minerals in fluvial deposits in the Miocene Virgin Valley
Formation.
RADIOACTIVE MINERALS Anomalously radioactive
opalized zones
HOST ROCK Sedimentary: Miocene Virgin Valley
Formation
MAIN COMMODITIES U
REFERENCES Castor
and others, 1996
NOTES
NO.
327
NAME Sample site VV-11
OTHER NAME
Uranium Lode Star claims(?)
COUNTY Humboldt
LOCATION
Sec. 25, T45N, R25E
UTMN 4627660
UTME
325780
DISTRICT Virgin Valley
QUAD Virgin
Valley 7.5' (1990)
RADIOACTIVITY Sample assayed 1,190 ppm
U
GEOLOGY Radioactive opal with manganese oxide containing
uranium in the Miocene Virgin Valley Formation.
RADIOACTIVE MINERALS
uraniferous opal
HOST ROCK Sedimentary: Miocene Virgin
Valley Formation
MAIN COMMODITIES U
REFERENCES
Castor and others, 1996
NOTES
NO. 328
NAME Sample site
VV-2
OTHER NAME Uranium Lode Star claims(?)
COUNTY
Humboldt
LOCATION Sec. 24, T45N, R25E
UTMN
4629030
UTME 325350
DISTRICT Virgin
Valley
QUAD Virgin Valley 7.5' (1990)
RADIOACTIVITY
Sample assayed 1,380 ppm U
GEOLOGY Radioactive brown
opal from fluvial deposits in the Miocene Virgin Valley
Formation.
RADIOACTIVE MINERALS uraniferous opal
HOST
ROCK Sedimentary: Miocene Virgin Valley Formation
MAIN
COMMODITIES U
REFERENCES Castor and others,
1996
NOTES
NO.
329
NAME Sample site VV-5
OTHER NAME Uranium
Lode Star claims(?)
COUNTY Humboldt
LOCATION
Sec. 24, T45N, R25E
UTMN 4629210
UTME
325380
DISTRICT Virgin Valley
QUAD Virgin
Valley 7.5' (1990)
RADIOACTIVITY Sample assayed 645 ppm
U
GEOLOGY Uranium arsenic sulfate from fluvial deposits in the
Miocene Virgin Valley Formation.
RADIOACTIVE MINERALS
unidentified uranium-arsenic phosphate
HOST ROCK Sedimentary:
Miocene Virgin Valley Formation
MAIN COMMODITIES
U
REFERENCES Castor and others, 1996
NOTES
NO. 330
NAME Sample site
VV-6
OTHER NAME Uranium Lode Star claims(?)
COUNTY
Humboldt
LOCATION Sec. 24, T45N, R25E
UTMN
4629360
UTME 325220
DISTRICT Virgin
Valley
QUAD Virgin Valley 7.5' (1990)
RADIOACTIVITY
Sample assayed 96 ppm U with a Th/U ration of 0.16.
GEOLOGY
Zeolitized tuff containing no obvious uranium minerals from fluvial
deposits in the Miocene Virgin Valley Formation.
RADIOACTIVE MINERALS
uranium-bearing rock
HOST ROCK Volcanic: Miocene Virgin
Valley Formation
MAIN COMMODITIES Th, U
REFERENCES
Castor and others, 1996
NOTES
NO. 331
NAME Sample site
VV-7
OTHER NAME Sample site C95-110; Uranium Lode Star
claims(?
COUNTY Humboldt
LOCATION Sec. 24,
T45N, R25E
UTMN 4629420
UTME
325140
DISTRICT Virgin Valley
QUAD Virgin
Valley 7.5' (1990)
RADIOACTIVITY Sample VV-7 assayed 9,740 ppm
U; sample C95-110 assayed 2,690 ppm U
GEOLOGY Samples of
radioactive breccia from Miocene Canyon Rhyolite containing an unidentified
yellow uranium mineral (C95-110) and carnotite, weeksite, an unidentified
uranium silicate, and an unidentified uranium-arsenic
phosphate.
RADIOACTIVE MINERALS carnotite; unidentified
uranium-arsenic phosphate; unidentified uranium silicate; unidentified yellow
uranium mineral; weeksite
HOST ROCK Volcanic: Miocene Canyon
Rhyolite
MAIN COMMODITIES U
REFERENCES Castor
and others, 1996
NOTES
NO.
332
NAME Sample site VV-9
OTHER NAME
Sample site C95-115; April Fool group(?)
COUNTY
Humboldt
LOCATION Sec. 25, T45N, R25E
UTMN
4627670
UTME 325720
DISTRICT Virgin
Valley
QUAD Virgin Valley 7.5' (1990)
RADIOACTIVITY
Sample VV-9 assayed 657 ppm U; Sample C95-115 has analyses with Th/U
ratios of 0.87 and 0.43
GEOLOGY Sample VV-9 is green
fluorescent opal replacing diatomite containing uranium in the Miocene Virgin
Valley Formation. Sample C95-115 is opalized air-fall tuff containing less than
40 ppm uranium.
RADIOACTIVE MINERALS uraniferous
opal
HOST ROCK Sedimentary: Miocene Virgin Valley
Formation
MAIN COMMODITIES Th, U
REFERENCES
Castor and others, 1996
NOTES
NO. 333
NAME Steamboat
group
COUNTY Humboldt
LOCATION Secs. 3, 10,
T44N, R25E
UTMN 4624920
UTME
323600
DISTRICT Virgin Valley
QUAD Virgin
Valley 7.5' (1990)
RADIOACTIVITY Background = 0.025-0.03 mR/hr;
High = 0.11-0.12 mR/hr. Two select samples contained 0.032 and 0.037%
U3O8.
GEOLOGY A prominent point consists mostly of
coarse-grained, light-gray, bedded tuff capped with a resistant ignimbrite. The
tuff and ignimbrite strike northeast and dip 15ºSE. At the west end of the
point, the tuff is about 60 feet thick; however 800 feet to the east, it is
completely covered by talus (Tuchek and others, 1984).
HOST ROCK
Volcanic: tuff
MAIN COMMODITIES U
REFERENCES
Tuchek and others, 1984; Garside, 1973.
NOTES
NO. 334
NAME Thacker
Pass
COUNTY Humboldt
LOCATION Sec. 7, T35N,
R44E
UTMN 4618340
UTME
409368
DISTRICT Disaster
QUAD Thacker Pass
7.5' (1991)
DEVELOPMENT Bulldozer trenches, drill
holes
RADIOACTIVITY Select samples contain 40 ppm U3O8 and 348
ppm eTh
GEOLOGY Uranium and thorium mineralization, including a
uranium-bearing zirconium silicate, is found in association with iron-oxide
staining in volcaniclastic sedimentary rocks which overlie ash-flow
tuff.
RADIOACTIVE MINERALS uranium-bearing zirconium
silicate
HOST ROCK Volcanic: ash-flow tuff and
volcaniclastic
MAIN COMMODITIES U
REFERENCES
Castor and others, 1982, no. 10.
NOTES UTMs from Castor and
others (1982).
NO. 335
NAME
Uranium Lode Star claims
OTHER NAME Alamo; Alpha; Beta;
Big Virgin; Bongo; Delta; Epsilon; Eta; Faun P.; Gamma; Gladys M.; Hepto;
Hillbilly; Iota; Jackal; Jeep; Jo Jo; Kappa; Kismet; Little Big Horn; Lucky Dog;
Moon Glow; Mu; Omega; Pacific; Paiute; Sprite; Sunny Jim; Sunrise; Sunset;
Tadpole; Tatie; Theta; Todos Amigos; Vad-ore; Zeta; Virgin Valley uranium
claims.
COUNTY Humboldt
LOCATION Secs. 12, 13,
T45N, R25E
UTMN 4631800
UTME
325500
DISTRICT Virgin Valley
QUAD Virgin
Valley 7.5' (1990)
U RESOURCES/ RESERVES 1984: submarginal
resource: 12,000,000 lbs. U in more than 20 million tons at 0.03%
U3O8
DEVELOPMENT Prospect pits.
RADIOACTIVITY
14 samples ranged from 8 ppm to 1.0% U3O8. 5 of the samples were above 190
ppm.
GEOLOGY A sequence of gently dipping tuff and ash beds at
least 300 feet thick are capped by basalt and terrace gravel. The tuff layers
are mostly greenish-gray, friable, and porous; traces of fibrous gypsum, and
iron and manganese oxides coat fracture surfaces. The ash beds are generally
thinner, lighter colored, and finer grained than tuff. The beds strike northwest
and dip 5º to 10ºNE. Forty-five discontinuous layers of opalite were observed.
Some had anomalous amounts of uranium. The layers of opalite occur parallel to
the bedding of the ash and tuff and range in thickness from 0.1 to 3.9 feet. The
length of the exposed opalite layers is from 8 feet to more than 1200 feet. Many
stages of silicification were observed. Less silicified beds resemble shale,
whereas thoroughly silicified beds are massive and translucent. The opalite has
a distinctive conchoidal fracture and is gray, brown. tan, black, white, and
pale green. Irregular and lenselike layers of diatomite, some 7 feet thick, are
exposed for more than 2000 feet on the April Fool 1, 2, and 3 claims. An area
north of Virgin Valley Ranch, which is about 1 by 0.25 miles and 50 feet deep
may contain 15 to 20 million tons of low grade uranium-bearing material,
constituting a submarginal resource (Tuchek and others, 1984).
RADIOACTIVE
MINERALS uranium-bearing rock
HOST ROCK Volcanic:
tuff and ash beds
MAIN COMMODITIES U
REFERENCES
Tuchek and others, 1984; Castor and others, 1982; Garside, 1973; Western
Uranium Corp., 2006b; Cuffney and others, 1988
NOTES UTMs from
approximate center of two sections containing claims.
NO. 336
NAME Wedding Ring group
(Nos. 1-6), Morning Star No.1, and Copper King No.1 claims.
OTHER NAME
Old Wedding Ring property.
COUNTY
Humboldt
LOCATION SE¼ NE¼ Sec. 28, T47N, R31E
UTMN
4642160
UTME 375300
QUAD Wilder Creek
Ranch 7.5' (1990)
DEVELOPMENT Shaft and prospect
pits.
RADIOACTIVITY One sample reportedly contained 0.28% U3O8.
A high of 0.3 mR/hr; was recorded. Castor and others (1982) collected a sample
with 137 ppm U3O8.
GEOLOGY Chalcopyrite-bearing quartz veins
cut gneissic granodiorite and associated pegmatite dikes. The anomalous
radioactivity is reportedly associated with secondary copper minerals which
occur as fracture coatings in the quartz veins.
RADIOACTIVE MINERALS
Anomalously radioactive copper minerals
HOST ROCK
Intrusive: gneissic granodiorite and associated pegmatite dikes
MAIN
COMMODITIES Cu
OTHER COMMODITIES Ag, Au,
U
NBMG SAMPLE 2441
OLD MAP NO.
220
REFERENCES AEC Report 3479; Willden, 1964, p. 112; Bonham
and others, 1985; Mason and others, 1996; Willden, 1964; Garside, 1973; Castor
and others, 1982, no. 11.
NOTES MRDS: M029072
NO. 337
NAME Yellow Star
prospect
COUNTY Humboldt
LOCATION Secs. 12 and
13, T44N, R34E
UTMN 4616960
UTME
408420
DISTRICT Disaster
QUAD Thacker Pass
7.5' (1991)
DEVELOPMENT Prospect pits.
GEOLOGY
Two uranium prospects are shown on the Vya sheet, U.S. 1:250,000 scale
topographic map. A prospect in this area called the Yellow Star is shown on an
unpublished Atomic Energy Commission map of Nevada uranium occurrences.
Schilling (1963) also reports a locality here. No other information is
available. Sections 12 and 13 are underlain by Tertiary rhyolite and
dacite.
HOST ROCK Volcanic: Tertiary rhyolite and
dacite
MAIN COMMODITIES U
OLD MAP NO.
218
REFERENCES U.S. Atomic Energy Comm. Unpublished map;
Schilling, 1963; U.S. 1 :250,000 scale topographic map, Vya sheet; Bonham and
others, 1985; Mason and others, 1996; Garside, 1973; Willden, 1964.
NOTES
MRDS: M029070
NO.
338
NAME “U” Claims
OTHER NAME AW claims;
Summit Nuclear Corp. claims
COUNTY Lander
LOCATION
Sec. 25, T18N, R44E
UTMN 4359840
UTME
501640
DISTRICT Birch Creek
QUAD Simpson Park
Canyon 7.5' (1989)
DEVELOPMENT Three short adits, several small
shafts, drill holes and bulldozer cuts.
GEOLOGY Rock mostly
quartz-sericite altered granitic rock. Bottom of one shaft is in silty,
calcareous, medium gray rock.
HOST ROCK Intrusive/Sedimentary:
quartz-sericite altered granitic rock; silty, calcareous, medium gray
rock
MAIN COMMODITIES U(?)
NBMG SAMPLE
751
REFERENCES Tingley and Smith, 1983a, b; Garside,
1973.
NOTES
NO.
339
NAME Adit No. 1 (Apex mine)
OTHER NAME
Early Day claims; Rundberg claims; Apex Mineral Co.
COUNTY
Lander
LOCATION Sec. 1, T. 18N, R43E; just north of the mouth
of Veatch Canyon.
UTMN 4367560
UTME
491460
DISTRICT Reese River
QUAD Austin 7.5'
(1988)
U PRODUCTION 1954-1960, 1963-1966: Apex Mine total:
21,000 tons ore with average grade of 0.25% U3O8 containing 106,000 lbs.
U3O8.
U RESOURCES/ RESERVES 1956: Adit No. 1, hanging wall:
8,860 tons positive ore, 4,900 tons probable ore, 44,100 tons possible ore; Adit
No. 1, foot wall: 6,900 tons positive ore, 4,600 tons probable ore, 41,400 tons
possible ore.
DEVELOPMENT Numerous bulldozer cuts, one open
pit, and six adits totaling 8,100 feet of underground
workings.
RADIOACTIVITY Select samples contain up to 6% U308.
Orebodies range in grade from 0.15 to 0.5% U308.
GEOLOGY
Uranium mineralization occurs in and near the contact of the Jurassic (145-168
Ma) porphyritic quartz monzonite Austin stock with metamorphosed shales and
quartzites of the Cambrian Gold Hill Formation. The intrusive contact is nearly
parallel to the bedding in the metasedimentary rocks. Pendants and xenoliths are
common. The mineralizing solutions were apparently introduced along silicified
fracture zones which occur at the intrusive contact. Uraninite and coffinite are
localized by bedding-plane faults, small folds, transverse fractures, and
crushed shaly beds along the sides of east-trending, altered, apatite-bearing
aplitic dikes or intrusive contact areas. The aplite dikes are. extremely
silicified and sericitized. Pyritic and graphitic argillites are the common
hosts for the primary orebodies. Pyrite and sparsely distributed blebs of
bornite and chalcopyrite are associated with the primary uranium minerals.
Silicification of brecciated areas near the intrusive contact was probably
accomplished at a late magmatic stage. Aplitic dikes intruded these zones and
acted as dams to the mineralizing solutions. Primary orebodies, irregular to
tabular in shape, were produced in the favorable metasedimentary zones near the
intrusive contact The majority of the ore is secondary, occurring mainly along
faults in the quartzites and shales, but also in aplite dikes and the intrusive
itself. Autunite, meta-autunite, torbemite, and metatorbernite are present,
commonly as individual tabular crystals. Some of these crystals reportedly have
centers of uraninite and coffinite. Iron oxides are often present with the
secondary ore, bodies of which appear to have been formed by redistribution of
uranium by circulating groundwater. Numerous fracture zones in the quartz
monzonite are reported to be radioactive in the vicinity of the mine. Two major
faults displace the ore but have no evident genetic relationship to the uranium
deposition. Most of the mining and development was done at or above the present
water table. This locality was visited by the author in 1968 and 1970.
Uranophane was noted at the Diamond. Autunite, meta-autunite, rutherfordine,
uranoptile, and zippeite are also reported.
RADIOACTIVE MINERALS
Autunite; coffinite; meta-autunite; rutherfordine; uraninite; uranophane;
uranoptile; zippeite
HOST ROCK Sedimentary/Intrusive: Cambrian
Gold Hill Formation; Jurassic Austin porphyritic quartz monzonite
stock
MAIN COMMODITIES Ag, U
NBMG SAMPLE
616
OLD MAP NO. 229
REFERENCES Sharp and
Hetland, 1954; Nye, 1958; AEC Report 3518 3520; Thurlow, 1956; Stewart and
McKee, 1967; Taylor, 1953b; Butler, 1958; Sharp, undated; McKelvey, 1957;U.S
Bureau of Mines Minerals Yearbooks, 1955-1960, 1963, 1964, 1965, 1966; Stewart
and others, 1977; Tingley and Smith, 1983a, b; Mason and others, 1996; Garside,
1973; Gallagher, 1955, 1956, 1957, 1958, 1959, 1960, 1964; Hughes, 1958(?);
Plut, 1979; Nye, 1958; Castor and Ferdock, 2004; Mitchell and Quade, 1982, no.
11.
NOTES MRDS: M232928
NO.
340
NAME Arizona property
COUNTY
Lander
LOCATION Sec. 7, T19N, R44E; e+E340xact location
unknown
UTMN 4374500
UTME
494000
DISTRICT Reese River
QUAD Yankee Blade
7.5' (1969)
GEOLOGY The bedrock of Sections 6 and 7 is
predominantly quartz monzonite of the Jurassic Austin pluton.
HOST
ROCK Intrusive: Jurassic Austin pluton
MAIN COMMODITIES
U(?)
OLD MAP NO. 237
REFERENCES U.S.
Atomic Energy Comm., unpublished map; Kay Critchlow, oral commun., 1977;
Garside, 1973; 1979; Stewart and others, 1977.
NOTES Exact
location uncertain; UTMs from near center of Sec. 7. K. Critchlow written
commun., 1975 reported it to be in Sec. 7.
NO.
341
NAME Birch Creek area
COUNTY
Lander
LOCATION S½ T18N, R44E
UTMN
4358160
UTME 499460
DISTRICT Birch
Creek
QUAD Austin 7.5' (1988); North Toiyabe Peak 7.5'
(1988)
GEOLOGY Geology: A monazite-bearing placer is reported
in the Birch Creek district.
RADIOACTIVE MINERALS
monazite
HOST ROCK Sedimentary (placer): alluvium
MAIN
COMMODITIES Monazite, U(?)
OLD MAP NO.
248
REFERENCES Lovering, 1954; Johnson, 1978; Garside,
1973.
NOTES The only recorded attempts were made at placer
mining in Birch Creek were in sections 34 and 35. UTMs from point where Birch
Creek crosses those two sections.
NO.
342
NAME Black Devel Mine
COUNTY
Lander
LOCATION Sec. 33, T23N, R40E (projected from
south)
UTMN 4408080
UTME 459064
QUAD
Gilbert Creek SW 7.5' (1980)
DEVELOPMENT Open pit, adit,
trenches (for Mn)
RADIOACTIVITY Radioactivity about 2.5 times
background. 78 ppm U3O8 reported.
GEOLOGY Slightly anomalous
radioactivity is associated with manganese mineralization in lakebeds that are
reported to be between ash-flow tuffs of the Bates Mountain Tuff. Manganese ore
(47.7% Mn) was reportedly shipped from this mine.
RADIOACTIVE MINERALS
radioactive manganese oxide
HOST ROCK Sedimentary:
Tertiary lake(?) beds
MAIN COMMODITIES Mn
OTHER
COMMODITIES U
REFERENCES Mitchell and Quade, 1982,
no. 4.
NOTES
NO.
343
NAME Boon Uranium claims
OTHER NAME Boone
prospect.
COUNTY Lander
LOCATION Sec. 20,
T22N, R44E; at the mouth of Boone Creek.
UTMN
4400850
UTME 495884
QUAD Joe Eason Mountain
7.5' (1969)
DEVELOPMENT Bulldozer cuts.
RADIOACTIVITY
Background = 0.03 mR/hr; High = 0.10 mR/hr. Select samples contain 0.01
to 0.045% cU3O8.
GEOLOGY Autunite occurs along fracture planes
in a thin chert bed. The chert occurs in a sequence of well bedded, horizontal,
waterlaid Tertiary tuffs. A minor radioactive anomaly was detected during a
helicopter scintillometer survey.
RADIOACTIVE MINERALS
Autunite
HOST ROCK Sedimentary: chert in a sequence of well
bedded, horizontal, waterlaid Tertiary tuffs
MAIN COMMODITIES
U
OLD MAP NO. 244
REFERENCES AEC Report 3510;
Finch, 1967; Cupp and others, 1977b; Garside, 1973; 1979; Mitchell and Quade,
1982, no. 5.
NOTES UTMs from Mitchell and Quade (1982)
NO. 344
NAME Buck
claims
COUNTY Lander
LOCATION SW¼ SE¼ Sec. 11,
T18N, R43E; south side of small canyon just south of Johnson
Canyon.
UTMN 4364600
UTME
490500
DISTRICT Reese River
QUAD Austin 7.5'
(1988)
DEVELOPMENT Four bulldozer cuts.
RADIOACTIVITY
Background = 0.01 mR/hr; High = 0.035 mR/hr. A two-foot chip sample at
the most radioactive locality contained 0.02% eU3O8. Later analyses are up to
158 ppm U3O8.
GEOLOGY Slightly anomalous radioactivity occurs
in a graphitic, calcareous argillite of the Cambrian Crane Canyon sequence.
Highest radioactivity seems to be associated with graphite-rich areas. The
radioactive area is near the intrusive contact with Jurassic granitic
rocks.
RADIOACTIVE MINERALS Anomalously radioactive
carbonaceous material(?)
HOST ROCK Sedimentary: Cambrian Crane
Canyon
MAIN COMMODITIES U
OLD MAP NO.
231
REFERENCES AEC Report 3502; Stewart and McKee,1967;
Garside, 1973; Mitchell and Quade, 1982, no. 14.
NOTES
NO. 345
NAME Buffalo Valley Hot
Springs
COUNTY Lander
LOCATION Sec. 23, T29N,
R41E
UTMN 4468470
UTME 472280
QUAD
Wild Range Canyon 7.5' (1990)
RADIOACTIVITY Spring = 30
to 38 uR/hr; water contains 0.04 ug/L U.
GEOLOGY Eleven springs
over three acres with temperatures up to 174ºF. The springs are in Quaternary
alluvial fan and lacustrine deposits, and the origin of the radioactivity is not
noted. However, Tertiary quartz latite ash-flow Caetano Tuff and rhyolitic
ash-flow Fish Creek Mountains Tuff outcrop about 5 miles to the east and
southeast.
RADIOACTIVE MINERALS radioactive minerals dissolved
in water
HOST ROCK Sedimentary(?): hot spring water
MAIN
COMMODITIES U
REFERENCES Garside and Schilling,
1979; Felmlee and Cardigan, 1978; Stewart and others, 1977
NOTES
NO. 346
NAME
Bulldog mine
OTHER NAME Bull Dog mine
COUNTY
Lander
LOCATION Sec. 14, T19N, R44E
UTMN
4372970
UTME 499780
DISTRICT Reese
River
QUAD Yankee Blade 7.5' (1982)
GEOLOGY
Meta-autunite reported from Bulldog mine. Location is in Quaternary alluvial fan
material apparently overlying Tertiary rhyolite intrusive rocks of uncertain
age.
RADIOACTIVE MINERALS meta-autunite
HOST ROCK
Intrusive: Tertiary rhyolite intrusive rocks
MAIN COMMODITIES
U
REFERENCES Stewart and others, 1977; Castor and
Ferdock, 2004
NOTES Uncertain if this is the correct Bulldog
Mine. UTMs from location in GNIS.
NO.
347
NAME Cahil Mine
COUNTY
Lander
LOCATION SW¼ SW¼ Sec. 25, T18N, R44E
UTMN
4359350
UTME 501150
DISTRICT Birch
Creek
QUAD Simpson Park Canyon 7.5'
(1989)
DEVELOPMENT Two adits and 2000 feet of workings (for
gold)
RADIOACTIVITY Three times background; a sample contained
80 ppm U3O8.
GEOLOGY Anomalous radioactivity is found at a
prospect pit in the vicinity of the Cahil Mine. It is associated with a vein
with iron- and manganese-oxide minerals; the vein cuts Ordovician Antelope
Valley Limestone. Production from the Cahil Mine was mainly gold with some
silver. The quartz veins are reported to contain fluorite.
HOST ROCK
Sedimentary: Ordovician Antelope Valley Limestone
MAIN
COMMODITIES Au, Ag
OTHER COMMODITIES
U
REFERENCES Mitchell and Quade, 1982, no. 18; Stewart and
others, 1977.
NOTES
NO.
348
NAME Campbell Creek Spring
COUNTY
Lander
LOCATION Sec. 10, T16N, R38E
UTMN
4346291
UTME 441049
DISTRICT Gold
Basin
QUAD Carroll Summit 7.5' (1969)
RADIOACTIVITY
No anomalous radioactivity
GEOLOGY Organic-rich spring
muck contains 120 ppm U3O8.
HOST ROCK Sedimentary: spring
muck.
OTHER COMMODITIES U
REFERENCES Mitchell
and Quade, 1982, no. 19.
NOTES
NO. 349
NAME Cortez
Canyon
COUNTY Lander
LOCATION Sec. 20, T27N,
R47E
UTMN 4448500
UTME
531500
DISTRICT Cortez
QUAD Cortez Canyon 7.5'
(1986)
GEOLOGY Autunite(?) was reportedly found near the
surface in a bulldozer road during the development of the Cortez gold deposit.
The rocks present are mainly Silurian and Devonian limestones.
RADIOACTIVE
MINERALS Autunite(?)
HOST ROCK Sedimentary: Silurian
and Devonian limestones
MAIN COMMODITIES U
OLD MAP
NO. 247
REFERENCES Mason and others, 1996; Garside,
1973.
NOTES MRDS: M232241; Exact location uncertain. MRDS
places it in Sec. 20 and then gives UTMs for Sec. 10, which are both in the
valley. The old Cortez pits are in section 24. For want of a better location,
the UTMs are taken from the gravel road along the base of the mountain just west
of the old Cortez Mine.
NO.
350
NAME Dacie Creek claims (about 300)
OTHER NAME
Dacies Creek claims; Daisy Creek.
COUNTY
Lander
LOCATION Center Sec. 34, T28N, R41E
UTMN
4456000
UTME 470000
QUAD Wild Range
Canyon 7.5' (1990)
RADIOACTIVITY Background = 0.02-0.04 mR/hr;
High = 0.15 mR/hr. Two grab samples contained 0.047 and 0.053% eU3O8. Other
samples contained up to 899 ppm U3O8.
GEOLOGY A thin-bedded,
water-laid tuff overlain by rhyolite contains areas of anomalous radioactivity.
Thin lenses of opal conform with the bedding of the tuff. Both the rhyolite and
tuff have reported anomalies, but the highest radioactivity is along minor
iron-stained fractures in the nearly horizontal tuffs. No uranium minerals were
recognized.
RADIOACTIVE MINERALS Anomalously radioactive iron
oxide
HOST ROCK Sedimentary/Volcanic: water-laid tuff;
rhyolite
MAIN COMMODITIES U
OLD MAP NO.
238
REFERENCES AEC Report 3514; Davis and Hetland, 1956, p.
358; Files, 1978; Mason and others, 1996; Garside, 1973; 1979; Berridge and
Wolverson, 1982.
NOTES MRDS: M232451; Exact location uncertain;
UTMs from near center of Sec. 34. Highest radioactivity is reported from gravel
pits.
NO. 351
NAME Daisy
Creek
OTHER NAME Union Oil property
COUNTY
Lander
LOCATION Sec. 16, T27N, R41E
UTMN
4451650
UTME 468950
QUAD Fish Creek Basin 7.5'
(1990)
DEVELOPMENT Open pits, bulldozer cuts, trenching, roads,
drillsites, 6,000 feet of downhole drilling.
RADIOACTIVITY High
uranium values associated with intermoat sediments of the Fish Lake
Caldera.
GEOLOGY High uranium values associated with intermoat
sediments of the Fish Lake Caldera. Rock includes arkosic sandstone and
lacustrine sediments. Uranium was probably precipitated from uranium-rich water
by P2O5 and organic debris.
RADIOACTIVE MINERALS
uranium-bearing rock
HOST ROCK Sedimentary: intermoat sediments
of the Fish Lake Caldera
MAIN COMMODITIES U
NBMG
SAMPLE 395
REFERENCES Tingley and Smith, 1983a,b;
Quade and Bentz, 1982
NOTES UTMs from Tingley and Smith
(1983a,b).
NO. 352
NAME
Diamond (Apex mine)
OTHER NAME Early Day claims; Rundberg
claims; Apex Mineral Co.
COUNTY Lander
LOCATION
Sec. 1, T. 18N, R43E; just north of the mouth of Veatch
Canyon.
UTMN 4367180
UTME
492020
DISTRICT Reese River
QUAD Austin 7.5'
(1988)
U PRODUCTION See description for Adit No. 1
U
RESOURCES/ RESERVES 1956: 53,500 tons positive ore, 53,500 tons
probable ore, 200,000 tons possible ore.
DEVELOPMENT See
description for Adit No. 1
RADIOACTIVITY See description for
Adit No. 1
GEOLOGY See description for Adit No.
1
RADIOACTIVE MINERALS Autunite; coffinite; meta-autunite;
rutherfordine; uraninite; uranophane; uranoptile; zippeite
HOST ROCK
Sedimentary/Intrusive: Cambrian Gold Hill Formation; Jurassic Austin
porphyritic quartz monzonite stock
MAIN COMMODITIES Ag,
U
REFERENCES See description for Adit No. 1
NOTES
MRDS: M232928
NO.
353
NAME Edna prospect
COUNTY
Lander
LOCATION SW¼ Sec. 17, T19N, R45E
UTMN
4372612
UTME 504681
QUAD Barton Spring 7.5'
(1986)
DEVELOPMENT Bulldozer pits.
RADIOACTIVITY
Background = 0.03 mR/hr; High = 0.1 mR/hr
GEOLOGY
Slightly anomalous radioactivity is reportedly associated with iron staining and
quartz stringers in Jurassic granitic rocks. Mitchell and Quade (1982) reported
that rocks in the pits are not anomalously radioactive.
RADIOACTIVE
MINERALS DELETE
HOST ROCK Intrusive: Jurassic
granitic rocks
MAIN COMMODITIES ?
OLD MAP NO.
236
REFERENCES AEC Report 3506; Garside, 1973; Mitchell and
Quade, 1982, no. LF-1.
NOTES UTMs from coordinates of Mitchell
and Quade (1982).
NO. 354
NAME
Eldorado claim
OTHER NAME El Dorado; Unnamed prospect
no. 3
COUNTY Lander
LOCATION Center NE¼ Sec.
6, T18N, R44E; prospect symbol shown on Austin 15-minute topographic
map.
UTMN 4366990
UTME
494160
DISTRICT Reese River
QUAD Austin 7.5'
(1988)
DEVELOPMENT Several prospect pits and bulldozer
cuts.
RADIOACTIVITY Greater than 4 times background. Select
samples average 0.18% cU3O8 and a 3-foot chip sample contained 0.054% cU3O8.
Chemical analyses average 30 to 60% greater than radiometric
analyses.
GEOLOGY Autunite and anomalous radioactivity occur
along a fracture zone in the quartz monzonite. The quartz monzonite is altered
to clay minerals, and fractured areas contain limonite veinlets 0.1 to .0.5
inches in width. Silver mineralization is apparently associated with the
fracture zone.
RADIOACTIVE MINERALS Autunite
HOST
ROCK Intrusive: quartz monzonite
MAIN COMMODITIES
Ag, U
NBMG SAMPLE 615A, 615B
OLD MAP NO.
230
REFERENCES AEC Report 3519; Sharp and Hetland, 1954; U.S.
Atomic Energy Commission, 1959; Tingley and Smith, 1983a, b; Mason and others,
1996; Garside, 1973; Mitchell and Quade, 1982, no. 12.
NOTES
MRDS: M234027
NO. 355
NAME
F. Escobar claims
OTHER NAME Escobar
COUNTY
Lander
LOCATION Sec. 28, T19N, R45E
(protracted).
UTMN 4369090
UTME
508300
QUAD Simpson Park Canyon 7.5'
(1989)
DEVELOPMENT A 35-foot adit and about 20 drill
holes.
RADIOACTIVITY Surface: Background = 0.012 mR/hr, maximum
= 0.07 mR/hr; Underground: Background = 0.02 mR/hr, maximum = 0.04 mR/hr. Up to
8 times background underground. Samples contain up to 229 ppm
U3O8.
GEOLOGY Radioactivity is associated with an
iron-oxide-stained fault-breccia zone in contorted argillites and quartzites of
the Ordovician Vinini Formation near the intrusive contact with Jurassic
granitic rocks. The fault zone and nearby smaller faults are vertical, and trend
north-south. The intrusive contact here has been displaced 15 to 20 feet
relatively upward on the east side of the fault. Autunite and metatorbernite(?)
have been reported.
RADIOACTIVE MINERALS Autunite,
metatorbernite(?)
HOST ROCK Sedimentary: Ordovician Vinini
Formation
MAIN COMMODITIES U
OLD MAP NO.
235
REFERENCES AEC Report 3513; McKee, 1968; Garside, 1973;
Mitchell and Quade, 1982, no. 13.
NOTES UTMs for adit symbol on
topographic map.
NO. 356
NAME
Graduation, Venus and Jupiter claims
OTHER NAME Tesoro
group
COUNTY Lander
LOCATION NW¼ SW¼ Sec. 11,
T17N, R43E on steep slope, north side of valley.
UTMN
4355500
UTME 490900
DISTRICT Big
Creek
QUAD North Toiyabe Peak 7.5' (1988)
DEVELOPMENT
One small pit and several bulldozer trails.
RADIOACTIVITY
Background = 0.008-0.010 mR/hr, maximum 0.05 mR/hr. A select sample
assayed 0.015 cU3O8. Later samples contain only 9 ppm U3O8.
GEOLOGY
Anomalous radioactivity occurs in a black, carbonaceous unit of contorted
argillites in the Ordovician Valmy(?) Formation. The highest radioactivity is
localized in a spot about 1 foot in diameter. Quartz stringers are present
locally. The carbonaceous unit was not anomalously radioactive elsewhere in the
vicinity.
RADIOACTIVE MINERALS Anomalously radioactive
carbonaceous material
HOST ROCK Sedimentary: Ordovician
Valmy(?) Formation
MAIN COMMODITIES U(?)
OLD MAP NO.
233
REFERENCES AEC Rept 3512; Stewart and McKee, 1967;
Garside, 1973; Mitchell and Quade, 1982, no. LF-4.
NOTES Exact
location uncertain; UTMs from near center of quarter-quarter section.
NO. 357
NAME Hart group (Nos.
1-27), Pinto group (Nos. 1-50)
COUNTY Lander
LOCATION
SW¼ Sec. 4, T23N, R43E (projected)
UTMN
4415930
UTME 487660
QUAD Manhattan Mountain NW
7.5' (1969)
DEVELOPMENT Numerous bulldozer cuts, and several
drill holes possibly as deep as 150 feet.
RADIOACTIVITY
Background = 0.015 mR/hr; High = 0.04 to 0.22 mR/hr. One- to 2.5-foot chip
samples reportedly contain 0.037 to 0.08% eU3O8.
GEOLOGY
Radioactivity at the Hart No. 3 claim occurs in irregular areas up to 25 feet in
diameter in greenish to cream colored, tuffaceous, slightly calcareous
siltstones. The beds strike N50ºW and dip approximately 20ºSW. The radioactive
area is approximately in the middle of the section of Tertiary sediments. Most
of the rocks are siltstones. A few sandstone beds were noted in the vicinity.
Nearby claims had no radioactive anomalies. The Pinto group claims were not
found during a 1970 examination.
HOST ROCK Sedimentary:
Tertiary tuffaceous, slightly calcareous siltstones
MAIN COMMODITIES
U
NBMG SAMPLE 651
OLD MAP NO.
240
REFERENCES AEC Report 3508; Finch, 1967; Cupp and others,
1977b; Tingley and Smith, 1983a, b; Garside, 1973; 1979; Basinski,
1978.
NOTES
NO.
358
NAME Jess H. Vorhees No. 1 Fee well
OTHER NAME
J. H. Vorhees No. 1
COUNTY Lander
LOCATION
SE¼ SE¼ SW¼ Sec. 27, T32N, R45E; within 100 feet of U. S Highway
40.
UTMN 4495523
UTME 509118
QUAD
Blossom Mountain 7.5' (1985)
DEVELOPMENT 8-inch diameter
oil well drilled to 912 feet
RADIOACTIVITY Geiger counter
showed “black sands” to be radioactive.
GEOLOGY Well hit
108-foot-thick “blue shale” at 58. “Black sands” sands above and below this
shale were radioactive. Sediments encountered are largely fluviatile and
sometimes lacustrine.
HOST ROCK Sedimentary: ”Black
sands”
MAIN COMMODITIES U(?)
OLD MAP NO.
246
REFERENCES J. H. Vorhees in Feb. 17, 1953, letter to J.
Lintz, Jr.; Lintz, 1957; Garside, 1973.
NOTES Drilled 1946
NO. 359
NAME Jess H.
Vorhees No. 2 Fee well
OTHER NAME J. H. Vorhees No.
2
COUNTY Lander
LOCATION C, S½ SW¼ Sec. 27,
T32N, R45E; within 100 feet of U. S Highway 40.
UTMN
4495543
UTME 508812
QUAD Blossom Mountain 7.5'
(1985)
DEVELOPMENT 12-inch diameter oil well drilled to 540
feet
RADIOACTIVITY Geiger counter showed “black sands” to be
radioactive.
GEOLOGY Well hit 108-foot-thick “blue shale” at
89. “Black sands” sands above and below this shale were radioactive. Sediments
encountered are largely fluviatile and sometimes lacustrine.
HOST ROCK
Sedimentary: ”Black sands”
MAIN COMMODITIES
U(?)
OLD MAP NO. 246
REFERENCES J. H. Vorhees
in Feb. 17, 1953, letter to J. Lintz, Jr.; Lintz, 1957; Garside,
1973.
NOTES Drilled 1947
NO.
360
NAME Johnson Canyon claims
COUNTY
Lander
LOCATION Center S½ Sec. 12, T18N, R43E; at end of
road.
UTMN 4364860
UTME
491900
DISTRICT Reese River
QUAD Austin 7.5'
(1988)
DEVELOPMENT Bulldozer cut.
RADIOACTIVITY
Background = 0.011, maximum = 0.045. Select samples average 0.03%
cU3O8.
GEOLOGY Slightly anomalous radioactivity occurs along a
5- to 10-foot-wide zone which roughly parallels a 2-foot-wide fault zone in
silicified limestones and hornfels of the Cambrian Crane Canyon sequence near
the intrusive contact with Jurassic granitic rocks.
HOST ROCK
Sedimentary: Cambrian Crane Canyon
MAIN COMMODITIES U
OLD
MAP NO. 232
REFERENCES AEC Report 3501; Stewart and
McKee, 1967; Garside, 1973; Mitchell and Quade, 1982, no. 15.
NOTES
Mitchell and Quade (1982) reported location as ~Center N½ Sec. 13,
T18N, R43E.
NO. 361
NAME
Lee Rene claims (Nos. 1-8)
COUNTY Lander
LOCATION
W½ Sec. 17, T23N, R43E (projected). On the south and west sides of a
hill.
UTMN 4412280
UTME 485900
QUAD
Manhattan Mountain 7.5' (1980)
DEVELOPMENT Five
bulldozer cuts and a 200(?)-foot drill hole.
RADIOACTIVITY
Background = 0.015 mR/hr; High = 0.42 mR/hr. Over 0.1% eU3O8 in thickness of 2.3
feet on prospects in this area; mineralization occurs at the oxidized-unoxidized
contact near the water table.
GEOLOGY Three areas within a
quarter of a mile of each other are anomalously radioactive. The highest
radioactivity is localized in small spots, but areas of several thousand square
feet are 2 to 4 times background. At Lee Rene No. 5 the high radioactivity is
associated with a north-trending fault which cuts yellowish-gray tuffaceous
siltstones. Gouge and organic(?) matter in the fault zone apparently
concentrated the uranium. At Lee Rene No. 8 radioactivity occurs along certain
tuffaceous beds. No uranium minerals were detected. This locality is probably
the same as the Rex Jean claims.
RADIOACTIVE MINERALS
uranium-bearing rock
HOST ROCK Sedimentary: tuffaceous
siltstones
MAIN COMMODITIES U
OLD MAP NO.
243
REFERENCES Cupp and others, 1977b; Basinski and Larson,
1979; Garside, 1973; 1979; Basinski, 1978; Mitchell and Quade, 1982, no.
3.
NOTES UTMs from prospect symbol on topographic map near the
center of W½ of Sec. 17.
NO.
362
NAME Lowboy mine
OTHER NAME Anomaly No. 5;
Low Boy claims; AW claims; Valley View.
COUNTY
Lander
LOCATION SW¼ SE¼ Sec. 13, T18N, R44E
UTMN
4362840
UTME 501970
DISTRICT Birch
Creek
QUAD Simpson Park Canyon 7.5' (1989)
U
PRODUCTION 1959: Four cars of ore (0.26% U308) brought $8,957. Three
of these were from the northern adits, and the fourth was from the shaft area.
Additional ore may have been produced from the southern trench and
adit
DEVELOPMENT Three hundred feet of trench, a partially
caved inclined shaft, three adits totaling 150 feet, and overhead stopes and
raises in one adit.
RADIOACTIVITY Background = 0.02 mR/hr; High
= 2.0 mR/hr. Chip samples (1, 2, and 3 feet) contained 0.188, 0.292, and 0.421%
cU3O8 respectively (0.19, 0.26 and 0.25% eU3O8). A sample shipment from the
shaft contained 0.55% U308, and a longhole drilled near the northern adits
reportedly ran 0.34% eU3O8 for 36 feet.
GEOLOGY The Lowboy mine
workings are at or near the contact of Jurassic granodiorite and Ordovician
Vinini Formation. The intrusive contact nearly parallels bedding in the
metasedimentary rocks trending northwest and dipping steeply northeasterly. The
metamorphic rocks are hornfels, phyllites, and minor fine-grained quartzites. A
5- to 50-foot-wide alaskite dike appears to have been intruded along or near the
granodiorite- Vinini contact. This dike has been hydrothermally altered in all
areas seen. The alteration does not appear to have extended appreciably into the
granodiorite. The feldspar has been altered to kaolinite in the alaskite, and
iron oxides are concentrated along its margins. Iron-staining and minor
silicification are present in the Vinini Formation as well, mainly along
fractures. The abundant iron oxides may have been produced by acid leaching of
pyrite. Most of the ore was produced from overhead stopes which explore certain
beds in the Vinini Formation near the granodiorite contact. Mineralization is
also present to a lesser extent in the altered alaskite. Secondary yellow and
green uranium minerals (including autunite and meta-autunite) occur as thin
fracture coatings. Limonite is commonly associated, and hyaline opal occurs
rarely. Primary uranium minerals may be present in unoxidized ore at depth, as
reported from the Apex mine 7 miles to the northwest.
RADIOACTIVE
MINERALS Autunite; meta-autunite; yellow and green uranium
minerals
HOST ROCK Sedimentary: Ordovician Vinini
Formation
MAIN COMMODITIES U
NBMG SAMPLE
755
OLD MAP NO. 234
REFERENCES AEC Report
3504; Sharp, undated map; Meeham, Sharp, and Mallory, 1956; McKee, 1968; U.S.
Bureau of Mines Minerals Yearbooks 1955, 1959; Stewart and others, 1977; Tingley
and Smith, 1983a, b; Mason and others, 1996; Garside, 1973; Mitchell and Quade,
1982, no. 16.
NOTES MRDS: M23286(?)
NO. 363
NAME Nevada Bureau of
Mines and Geology sample site 757
OTHER NAME Unnamed prospect
no. 1
COUNTY Lander
LOCATION SE¼ NE¼ Sec. 34,
T18N, R44E
UTMN 4358620
UTME
499300
DISTRICT Birch Creek
QUAD Austin 7.5'
(1988)
DEVELOPMENT Caved adit that may have been 50-100 feet
long
GEOLOGY Geology: Quartz monzonite(?). Adit appears to have
been driven on hanging wall side of a silicified, iron-stained rib of intrusive
rock which outcrops prominently as a spine running uphill.
HOST ROCK
Intrusive: quartz monzonite
MAIN COMMODITIES
U(?)
NBMG SAMPLE 757
REFERENCES Tingley and
Smith, 1983a, b; Garside, 1973.
NOTES
NO. 364
NAME Occurrence (T19N,
R44E)
COUNTY Lander
LOCATION Sec. 4, T19N,
R44E
UTMN 4375478
UTME
497159
DISTRICT Reese River
QUAD Yankee Blade
7.5' (1969)
DEVELOPMENT .
RADIOACTIVITY
800-1,000 cps, which is 4.6-6.3 times background.
GEOLOGY
Anomalous radioactivity is found in tuffaceous sedimentary rocks which underlie
Tertiary ash-flow tuffs and overlie Mesozoic granitic rocks. Some siltstone is
opalized.
HOST ROCK Sedimentary: tuffaceous sedimentary
rocks
MAIN COMMODITIES U
REFERENCES Mitchell
and Quade, 1982, no. 8.
NOTES UTMs from Mitchell and Quade
(1982) coordinates.
NO. 365
NAME
Old Jaw Bone property
OTHER NAME Old
Jawbone
COUNTY Lander
LOCATION Sec. 13(?),
T26N, R40E; Exact location unknown
UTMN 4441460
UTME
462700
QUAD Home Station Gap 7.5' (1990); Mt. Moses 7.5'
(1990); Mt. Moses
GEOLOGY Occurrence is within the ring
fracture zone at the southwest margin of the Fish Creek Mountain caldera and is
in the welded, rhyolitic, crystal rich Miocene Fish Creek Tuff.
HOST
ROCK Volcanic: Miocene Fish Creek Tuff
MAIN COMMODITIES
U
OLD MAP NO. 239
REFERENCES U.S.
Atomic Energy Comm., unpublished map; Tingley and Smith, 1983a, b; Mason and
others, 1996; Garside, 1973.
NOTES MRDS: M232452
NO. 366
NAME Rex Jean claims
(Nos. 1-11)
COUNTY Lander
LOCATION SE¼ Sec.
18, T23N, R43E This group of claims could not be located in 1970.
UTMN
4412150
UTME 485360
QUAD Manhattan
Mountain 7.5' (1980)
DEVELOPMENT Two bulldozer
cuts.
RADIOACTIVITY Background = 0.2 mR/hr; High = 0.5 mR/hr.
Two- and four-foot channel samples contained 0.016 and 0.087% eU3O8
respectively.
GEOLOGY Anomalous radioactivity is reportedly
associated with iron-stained fractures in a rhyolitic, waterlaid
tuff.
RADIOACTIVE MINERALS Anomalously radioactive iron
oxide(?)
HOST ROCK Sedimentary: rhyolitic, waterlaid
tuff
MAIN COMMODITIES U
OLD MAP NO.
242
REFERENCES AEC Report 3511; Cupp and others, 1977b;
Garside, 1973; 1979.
NOTES UTMs from prospect symbol on
topographic map nearest the center of Sec. 17.
NO. 367
NAME Rundberg (Apex
mine)
OTHER NAME Early Day claims; Rundberg claims; Apex
Mineral Co.
COUNTY Lander
LOCATION Sec. 1, T.
18N, R43E; just north of the mouth of Veatch Canyon.
UTMN
4367460
UTME 491560
DISTRICT Reese
River
QUAD Austin 7.5' (1988)
U PRODUCTION See
description for Adit No. 1
U RESOURCES/ RESERVES 1956: 37,000
tons positive ore, 25,000 tons probable ore, 225,000 tons possible
ore
DEVELOPMENT See description for Adit No.
1
RADIOACTIVITY See description for Adit No.
1
GEOLOGY See description for Adit No. 1
RADIOACTIVE
MINERALS Autunite; coffinite; meta-autunite; rutherfordine;
uraninite; uranophane; uranoptile; zippeite
HOST ROCK
Sedimentary/Intrusive: Cambrian Gold Hill Formation; Jurassic Austin porphyritic
quartz monzonite stock
MAIN COMMODITIES Ag,
U
REFERENCES See description for Adit No. 1
NOTES
MRDS: M232928
NO.
368
NAME Ruth No. 1, Fannie No. 1
COUNTY
Lander
LOCATION SW¼ Sec. 11, T21N, R46E
UTMN
4393900
UTME 519240
QUAD Grass Valley Ranch
7.5' (1986)
DEVELOPMENT Two prospect pits and an inclined
shaft.
RADIOACTIVITY Background = 140 cps; High = 800 cps; Up
to 149 ppm U3O8 reported.
GEOLOGY Anomalous radioactivity is
found in a garnet-diopside skarn zone which has scheelite, powellite,
chalcopyrite, and molybdenite. The skarn is developed at the contact of granite
and silty limestone of the Roberts Mountains Formation.
HOST ROCK
Sedimentary: silty Paleozoic limestone
MAIN COMMODITIES
W
OTHER COMMODITIES U
REFERENCES Mitchell and
Quade, 1982, no. 6; Stager and Tingley, 1985.
NOTES
NO. 369
NAME Two-Bit group (Nos.
1-6)
COUNTY Lander
LOCATION Secs. 26, 35,
T24N, R43E
UTMN 4418000
UTME
491000
QUAD Manhattan Mountain NE 7.5'
(1969)
DEVELOPMENT Shallow bulldozer trenches, pits, and drill
holes.
RADIOACTIVITY Background = 0.03 mR/hr; High = 0.15
mR/hr. Analyses up to 215 ppm U3O8.
GEOLOGY Anomalous
radioactivity is reported from zeolitized tuff and tuffaceous mudstone which are
interbedded with conglomerates and sandstones. A modest radioactive anomaly was
detected during a helicopter scintillometer survey of the area, but the anomaly
could not be located on the ground. Basinski and Larson (1979) suggested that
zeolites or calcium montmorillonite present in the rocks may have acted to
concentrate the uranium.
RADIOACTIVE MINERALS Uranium-bearing
zeolites or calcium montmorillonite
HOST ROCK Sedimentary:
Tertiary tuffaceous, slightly calcareous siltstones
MAIN COMMODITIES
U; zeolite
OLD MAP NO. 241
REFERENCES
AEC Report 3507; Cupp and others, 1977b, p. 17; Basinski and Larson, 1979;
Papke, 1972, p. 23; Garside, 1973; 1979; Mitchell and Quade, 1982, no.
2.
NOTES UTMs from near center of two sections. Prospects are
in both sections.
NO. 370
NAME
Willys group (Nos. 1-24)
COUNTY
Lander
LOCATION Sec. 24, T19N, R42E
UTMN
4372537
UTME 482853
QUAD Vigus Butte 7.5'
(1982)
DEVELOPMENT Location pits and one small
cut.
RADIOACTIVITY Background = 0.03 mR/hr; High = 0.18 mR/hr.
A 6-inch chip sample contained 0.06% eU3O8. Later samples contained up to 253
ppm U3O8.
GEOLOGY Anomalous radioactivity occurs in a 6- to
18-inch-thick bed of silicified tuff or sandstone. Poorly indurated beds above
and below are not radioactive. The radioactivity continues in the bed for over
0.33 mi.
HOST ROCK Sedimentary: Tertiary sedimentary
rocks
MAIN COMMODITIES U
OLD MAP NO.
245
REFERENCES AEC Report 3505; Garside, 1973; Mitchell and
Quade, 1982, no. 10
NOTES UTMs from Mitchell and Quade (1982).
NO. 371
NAME “A” Zone,
Judy claims
OTHER NAME Judy claims (19 claims); Judy Nos. 6, 8;
AMCA Industries property; AMCA Industries, Ltd
COUNTY
Lincoln
LOCATION Sec. 20(?), T2N, R61E; 29,000 feet S40°W of SE
corner of Sec. 31, T3N, R62E
UTMN 4208640
UTME
664430
DISTRICT Seaman Range
QUAD Timber
Mountain Pass West 7.5' (1971)
DEVELOPMENT 19 drill holes
totaling 1974 feet
RADIOACTIVITY All holes showed radioactive
anomaly. P-8 (80 feet TD) ranged 50-800 cps with 800 cps at 14-20 feet, assay:
0.011%-0.016% U3O8; P-9 (130 feet TD) ranged 50-900 cps with 900 cps at 93-97
feet; P-18 (40 feet TD) ranged 350-900 cps with 900 cps at 9-12
feet.
GEOLOGY Uranium anomaly. Visible yellow carnotite in
locally silicified limestone close to its contact with Cretaceous(?)
granite.
RADIOACTIVE MINERALS carnotite
HOST ROCK
Sedimentary: locally silicified limestone
MAIN COMMODITIES
U
REFERENCES Bergmann, 1977, 1978
NOTES
UTMs estimated from Bergmann, 1977
NO.
372
NAME “B” and “E” Zones, Judy claims
OTHER NAME
Judy claims (19 claims); Judy Nos. 21, 22, 23; AMCA Industries property;
AMCA Industries, Ltd
COUNTY Lincoln
LOCATION
Sec. 20(?), T2N, R61E; 29,000 feet S40oW of SE corner of Sec. 31, T3N, R62E
UTMN 4207920
UTME 664190
DISTRICT
Seaman Range
QUAD Timber Mountain Pass West 7.5'
(1971)
DEVELOPMENT Eleven drill holes totaling 1478
feet
RADIOACTIVITY All holes showed radioactive anomaly. B-14
(150 feet TD) ranged 125-300 cps with 300 cps at 113-118 feet
GEOLOGY
Uranium anomaly. Visible yellow carnotite in locally silicified limestone
close to its contact with Cretaceous(?) granite.
RADIOACTIVE MINERALS
carnotite
HOST ROCK Sedimentary: locally silicified
limestone
MAIN COMMODITIES U
REFERENCES
Bergmann, 1977, 1978
NOTES UTMs estimated from Bergmann, 1977
NO. 373
NAME
Anomaly
COUNTY Lincoln
LOCATION C, Sec. 4,
T2S, R68E
UTMN 4187020
UTME
730840
DISTRICT Panaca
QUAD Panaca 7.5'
(1970)
DEVELOPMENT Quarry
RADIOACTIVITY
Airborne anomaly
GEOLOGY Anomalous radioactivity detected from
the air, but no specific areas of radioactivity were found on the ground. The
area was mined for diatomite, and the anomaly may be due to removal of alluvium
and smearing of weak mineralization over a broad area during diatomite mining.
The diatomite occurs in the Panaca Formation.
HOST ROCK
Volcanic: Pliocene Panaca Formation
MAIN COMMODITIES
diatomite
OTHER COMMODITIES U(?)
REFERENCES
Cupp and others, 1977b
NOTES
NO.
374
NAME Atlanta mine
OTHER NAME
Atlanta Home; Atlanta Nos. 1-3; Atlanta Strip; Atlanta Strip No.1; Hillside;
Sparrow Hawk; Pactolion Fraction; and Belle.
COUNTY
Lincoln
LOCATION E½ Sec. 15, W½ Sec. 16, T7N, R68E
(protracted).
UTMN 4260720
UTME
733650
DISTRICT Atlanta
QUAD Atlanta 7.5'
(1973)
U PRODUCTION 1953-1955: More than 16,000 tons of
low-grade siliceous gold ore was shipped to Kennecott's McGill smelter for use
as flux. The ore contained 6 to 12 dollars gold per ton, and about 0.05%
U3O8.
OTHER PRODUCTION 1953-1955: More than 16,000 tons of
low-grade siliceous gold ore; 1975-1985: 147,000 oz at 0.08 opt Au, 3,000,000 oz
at 1.6 opt Ag
DEVELOPMENT Two shafts, a raise, a winze,
crosscuts, and drifts. Underground development extended to the 400-foot level,
and includes at least 2,500 feet of underground workings. An open pit is also
present south of the main shaft. Workings are for gold.
RADIOACTIVITY
Samples from the 100- and 200-foot levels contain only very minor amounts
of uranium (0.01-0.02% cU3O8).
GEOLOGY Low-grade gold ore
(free-milling) and minor silver and uranium occur in a silicified breccia zone
which crops out for 3,000 feet along a fault that strikes N30ºW and dips 40ºSW.
The breccia is mainly limestone, but contains fragments of quartzite and
rhyolite tuff. The breccia is exposed in the 1970s open-pit gold mine. It
apparently represents the caldera margin of the Oligocene Indian Hills caldera
and tuff dikes are associated with the zone. Silicification and gold
mineralization are thought to be related to caldera formation (ca. 29.5
Ma).
RADIOACTIVE MINERALS carnotite; uranium-bearing gold and
silver ore
HOST ROCK Sedimentary: silicified breccia of mainly
limestone and some quartzite and rhyolite tuff.
MAIN COMMODITIES
Ag, Au
OTHER COMMODITIES U
NBMG SAMPLE
4389, 4390
OLD MAP NO. 250
REFERENCES AEC
Reports, 3554, 3554a, 3554b, 3558, 3558a, 3558b, 3560; Butler, Finch, and
Twenhofel, 1962; Schilling, 1963; Staatz and Johnson, 1954; Sharp and Myerson,
1956; Sharp, 1956; Walker, Osterwald, and Adams, 1963; Hill, 1916, p. 117-119;
Carper, 1946; McKelvey, 1957; Nevada State Bur. Mines, 1932, p. 51; Smith, 1958;
Tingley and Castor, 1991; Mason and others, 1996; Tschanz and Pampeyan, 1970;
Garside, 1973; Castor and Ferdock, 2004.
NOTES MRDS: W031572
NO. 375
NAME Cave Valley
mine
OTHER NAME Great Western claims; Cave group (5 claims);
Subterranean group (6 claims)
COUNTY Lincoln
LOCATION
Sec. 16, T9N, R64E
UTMN 4279320
UTME
691860
DISTRICT Cave Valley
QUAD Parker
Station 7.5' (1969)
DEVELOPMENT 120-foot-deep shaft, and drifts
and stopes (for silver).
GEOLOGY Five north-trending fissures
are present in the mine area. A 1- to 5-foot vein and small bedded replacements
in or near the lower limestone in the Pioche shale contain lead, silver, and
copper minerals. Uranium minerals were reported in 1930 in this mine. However,
Schrader (1931) found no uranium. Psittacinite (a yellow lead-zinc vanadate) has
been reported, and may have been mistaken for carnotite.
RADIOACTIVE
MINERALS carnotite(?); uranium minerals
HOST ROCK
Sedimentary: lower limestone in the Pioche shale
MAIN COMMODITIES
Ag, Cu, Pb
OTHER COMMODITIES Au, U(?), V, Zn
NBMG
SAMPLE 815, 816, 817, 818A, 818B
OLD MAP NO.
256
REFERENCES Mining Journal, 1930; Tschanz and Pampeyan,
1970; Schrader, 1931; Mason and others, 1996; Tingley and Bentz, 1983a, b;
Garside, 1973.
NOTES MRDS: M233813
NO. 376
NAME Dorothy
claim
COUNTY Lincoln
LOCATION SW¼ Sec. 4, T2S,
R68E; on a small butte half a mile from the center of Panaca.
UTMN
4186500
UTME 730240
DISTRICT
Panaca
QUAD Panaca 7.5' (1970)
RADIOACTIVITY
Background = 0.03 mR/hr, High = 0.20 mR/hr. A grab smap1e contains 0.013%
cU3O8.
GEOLOGY Anomalous radioactivity occurs in a gray,
massive tuff of the Panaca Formation. Carnotite occurs as impregnations in
carbonaceous material and as coatings on joint surfaces and mud
cracks.
RADIOACTIVE MINERALS carnotite
HOST ROCK
Volcanic: Pliocene Panaca Formation
MAIN COMMODITIES
U
OLD MAP NO. 255
REFERENCES AEC Report 3543;
Finch, 1967; Cupp and others, 1977b; Garside, 1973; 1979; Castor and Ferdock,
2004.
NOTES
NO.
377
NAME Hulse mine
OTHER NAME Blue Bird mine;
Ella; Minnie; and Lucky Dog claims
COUNTY
Lincoln
LOCATION NW¼ Sec. 22, T7N, R68E
(protracted).
UTMN 4259500
UTME
732720
DISTRICT Atlanta
QUAD Atlanta 7.5'
(1973)
U PRODUCTION 1954-1956: Two carloads of ore containing
more than 0.30% U3O8, about 1 ounce of silver, and 0.03 ounces gold per ton,
were shipped; 1959: One shipment made
DEVELOPMENT 275 feet of
underground workings and 3 diamond drill holes totaling 660
feet.
RADIOACTIVITY Select samples contain 0.1 to 1.28%
cU3O8.
GEOLOGY Pods of pyrite-uraninite ore occur in tabular
jasperoid zones along gently dipping faults which contain 1- to 4-foot-thick
silicified gouge zones. Marcasite has also been identified, and uraninite
(pitchblende) is found as spheroids, possibly the result of colloidal deposition
with silica. Mineralization appears to have been controlled by an intrusive
breccia zone or pipe which was later cut by many minor faults that strike
N35-55º W. Yellow secondary uranium minerals (uranophane?) have been reported
from near the surface. Pyrite reportedly alters to carphosiderite and
pitchblende to gummite. The Ordovician Ely Springs Dolomite is the mineralized
unit in the mine. Mineralization is apparently associated with the Oligocene
Indian Hills caldera, similar to the Atlanta Mine.
RADIOACTIVE
MINERALS pyrite-uraninite; uranophane(?), gummite
HOST ROCK
Sedimentary: Ordovician Ely Springs Dolomite
MAIN COMMODITIES
U
OTHER COMMODITIES Ag, Au, Cu, Pb
NBMG SAMPLE
4098
OLD MAP NO. 249
REFERENCES AEC
Report 3545, 3545A; Butler, Finch and Twenhofel, 1962; Schilling, 1963; Sharp
and Myerson, 1950; Walker, Osterwald, and Adams, 1963; Tschanz and Pampeyan,
1970; Powers and Finch, 1955;U.S Bureau of Mines Minerals Yearbooks 1955, 1959;
Tingley and Castor, 1991; Mason and others, 1996; Garside, 1973; Castor and
Ferdock, 2004.
NOTES MRDS: D001270
NO. 378
NAME Lucky Strike claims
(Nos. 1-9)
COUNTY Lincoln
LOCATION T2N, R61E;
Exact location unknown
UTMN 4211000
UTME
665000
DISTRICT Seaman Range
QUAD Timber
Mountain Pass East 7.5' (1971); Timber Mountain Pass West 7.5'
(1971)
DEVELOPMENT 11 drill holes reported, totaling 647
feet.
RADIOACTIVITY Background = 0.02 mR/hr; High = 0.16 mR/hr
Select samples contained 0.016 to 0.055% eU3O8. Samples assaying up to 10 times
these values were reportedly submitted to the U.S. Bureau of Mines by an owner
of the property.
GEOLOGY Radioactivity is reportedly present in
an iron-stained silicified breccia. The wall rock type is not known. No uranium
or thorium minerals were recognized. Tschanz and Pampeyan (1970) show the
township is largely underlain by Devonian-Mississippian carbonate rock partly
overlain in the southern part of the township by Oligocene-Pliocene ignimbrite
series of the Tertiary younger volcanic rocks.
RADIOACTIVE MINERALS
Anomalously radioactive iron oxide(?)
HOST ROCK
Sedimentary: Devonian-Mississippian carbonate
MAIN COMMODITIES
U
OLD MAP NO. 258
REFERENCES AEC Report 3536;
Garside, 1973; Tschanz and Pampeyan, 1970; Du Bray and others, 1987.
NOTES
Exact location uncertain; UTMs from near center of township.
NO. 379
NAME Nevada Rath claims
(Nos. 1-13)
COUNTY Lincoln
LOCATION NE¼ Sec.
26(?), T7N, R68E (unsurveyed). Half a mile west of Bradshaw Spring; Exact
location uncertain
UTMN 4258200
UTME
734400
DISTRICT Atlanta
QUAD Atlanta 7.5'
(1973)
DEVELOPMENT Several location pits in
overburden.
RADIOACTIVITY Background = 0.10 mR/hr; High = 3.0
mR/hr. Grab samples of silicified limestone breccia (float) contain 0.69% eU3O8
(0.613% cU3O8).
GEOLOGY Uranophane(?) and uraninite(?) were
reported from a considerable amount of radioactive float on the property,
especially in silicified, brecciated limestone.
RADIOACTIVE MINERALS
uraninite(?); uranophane(?)
HOST ROCK Sedimentary:
silicified, brecciated limestone.
MAIN COMMODITIES U
OLD
MAP NO. 252
REFERENCES AEC Report 3537; Rosencrans
Knolls 7.5-minute sheet; Tingley and Castor, 1991; Mason and others, 1996;
Garside, 1973; 1979; Castor and Ferdock, 2004.
NOTES MRDS:
M242420; UTMs from site in Tingley and Castor (1991); Garside (1973) has R69E
but Tingley and Castor (1991) and BLM claims fiche have R68E; BLM claims
microfiche have location in Secs. 23 and 24
NO.
380
NAME Old Democrat mine
COUNTY
Lincoln
LOCATION NW¼ NE¼ Sec. 18, T3S, R67E
UTMN
4174260
UTME 718420
DISTRICT
Chief
QUAD Chief Mountain 7.5' (1970)
DEVELOPMENT
Several hundred feet of inaccessible workings for gold and
silver.
RADIOACTIVITY Background = 0.01 mR/hr; High = 0.03
mR/hr
GEOLOGY Slightly anomalous radioactivity occurs along an
oxidized copper-gold vein in the Cambrian Prospect Mountain Quartzite. Lead and
silver were also produced from the property. The slight radioactivity may be
related to a lens of porphyritic diorite which reportedly parallels the
vein.
RADIOACTIVE MINERALS Anomalously radioactive copper and
gold minerals(?)
HOST ROCK Sedimentary: Cambrian Prospect
Mountain Quartzite
MAIN COMMODITIES Ag, Pb, Zn
OTHER
COMMODITIES Cu, U
OLD MAP NO.
263
REFERENCES AEC Report 3653; Callaghan, 1936; Tschanz and
Pampeyan, 1970; Mason and others, 1996; Tingley, 1984a; Garside,
1973.
NOTES MRDS: M032039
NO.
381
NAME Pay Zone claim
COUNTY
Lincoln
LOCATION SE¼ Sec. 9 and SW¼ Sec. 10, T2S,
R68E
UTMN 4185000
UTME
732500
DISTRICT Panaca
QUAD Condor Canyon 7.5'
(1970)
RADIOACTIVITY Background = 0.03 mR/hr, High = 0.20
mR/hr. A grab smap1e contains 0.013% cU3O8.
GEOLOGY Anomalous
radioactivity occurs in a gray, massive tuff of the Panaca Formation.
Radioactivity on the ground id discontinuous and restricted to butte-like knobs
along the bluff and to a single 4- to 5-foot-thick bed. The largest of these in
SE¼, Sec. 9, is less than 0.05 acres in area.
HOST ROCK
Volcanic: Pliocene Panaca Formation
MAIN COMMODITIES
U
OLD MAP NO. 254
REFERENCES AEC Report 3543;
Finch, 1967; Cupp and others, 1977b; Garside, 1973; 1979.
NOTES
Exact location uncertain; UTMs from near center of two quarter sections.
NO. 382
NAME Peak claims (Nos.
1-12)
COUNTY Lincoln
LOCATION Secs. 8, T1N,
R71E; near the summit of the high peak at the head of Deer Lodge
Canyon.
UTMN 4205840
UTME
758280
DISTRICT Eagle Valley
QUAD Deer Lodge
Canyon 7.5' (1972)
DEVELOPMENT Bulldozer
cuts.
RADIOACTIVITY Background = 0.02 mR/hr; High = 0.20 mR/hr.
One sample contained 0.58% cU3O8 (but only 0.12% eU3O8).
GEOLOGY
Autunite and torbernite occur in 1- to 2-inch siliceous stringers in a
white to gray rhyolite flow. Some iron-oxide staining is present. Meta-autunite
is present with metatorbernite.
RADIOACTIVE MINERALS Autunite;
meta-autunite; metatorbernite; torbernite
HOST ROCK Volcanic:
white to gray rhyolite flow
MAIN COMMODITIES U
OLD MAP
NO. 260
REFERENCES AEC Report 3535; Tschanz and
Pampeyan, 1970; Mason and others, 1996; Tingley, 1984a; Garside, 1973; Castor
and Ferdock, 2004.
NOTES MRDS: M241680; UTMs from site noted in
Tingley (1984a).
NO. 383
NAME
Silver Park mine
OTHER NAME Jesse Knight
property.
COUNTY Lincoln
LOCATION NW¼ Sec. 21,
T7N, R68E (protracted).
UTMN 4260080
UTME
730720
DISTRICT Atlanta
QUAD Atlanta 7.5'
(1973)
OTHER PRODUCTION 1876: 373 tons ore valued $23,153;
1980: small Ag and Au production
DEVELOPMENT 300-foot-deep
shaft, caved to within 50 feet of the surface. Workings are for
silver.
RADIOACTIVITY Slightly above
background.
GEOLOGY Dumps and areas near old workings are
slightly more radioactive than surrounding unaltered rocks. Calcite, lead and
copper carbonates, and cerargyrite are present in siliceous, north- and
northeast-trending replacement veins in dolomite. The dolomite outcrop is
completely surrounded by ash-flow tuff, and may be a slide block from the wall
of the Indian Hills caldera.
HOST ROCK Sedimentary:
limestone
MAIN COMMODITIES Ag, Au
OTHER COMMODITIES
Cu, Pb, U(?), Zn
NBMG SAMPLE 4099
OLD MAP NO.
251
REFERENCES Sharp and Myerson, 1956; AEC Report
3564;USGS Atlanta 7.5-minute quad; Tingley and Castor, 1991; Mason and others,
1996; Garside, 1973; 1979; Couch and Carpenter, 1943
NOTES
MRDS: M032071
NO. 384
NAME
Tem Piute mine
OTHER NAME North Tem Piute mine;
Schofield mine; Tempiute mine
COUNTY Lincoln
LOCATION
Sec. 36, T3S, R56E
UTMN 4165700
UTME
621200
DISTRICT Tem Piute
QUAD Tempiute
Mountain North 7.5' (1987)
OTHER PRODUCTION 1941-1943,
1951-1955, 1980: 1,856 units WO3
DEVELOPMENT Several thousand
feet of underground workings and an open pit. The workings were developed for
tungsten.
RADIOACTIVITY A chip sample was anomalously
radioactive.
GEOLOGY Autunite was recognized along a fault in
diopside-garnet tactite. The autunite occurred as small flakes coating rock
surfaces over a short distance along the fault. The intrusive contact with
quartz monzonite is nearby. The occurrence is on the 600-foot level in the Moody
ore zone, where scheelite occurs in the tactite zone with calcite, fluorite,
chlorite, diopside, garnet, quartz, pyrite, pyrrhotite, and minor chalcopyrite
and molybdenite. Meta-autunite is also present.
RADIOACTIVE MINERALS
Autunite; meta-autunite
HOST ROCK Metamorphic:
skarn
MAIN COMMODITIES W
OTHER COMMODITIES
U
NBMG SAMPLE 1455
OLD MAP NO.
264
REFERENCES Tschanz and Pampeyan, 1970; Mason and others,
1996; Tingley, 1984a; Garside, 1973; Stager and Tingley, 1985; Castor and
Ferdock, 2004.
NOTES MRDS: ISM0526
NO. 385
NAME Valley View
property
COUNTY Lincoln
LOCATION Center T2N,
R56E; Exact location unknown
UTMN 4209000
UTME
616000
DISTRICT Quinn Canyon
QUAD Badger Gulch
7.5' (1985)
GEOLOGY Tschanz and Pampeyan (1970) show the
township is largely underlain by Tertiary younger volcanic rocks, which is an
intermittently erupted Oligocene-Pliocene ignimbrite series consisting of welded
vitric and crystal tuffs, pumice or lapilli tuffs, sillars, lahars or tuff
breccias, flows, domes, and perlitic rock.
HOST ROCK Volcanic:
Teriary younger volcanic rocks
MAIN COMMODITIES U(?)
OLD
MAP NO. 257
REFERENCES U.S. Atomic Energy Comm.,
unpublished map; Garside, 1973; Tschanz and Pampeyan, 1970.
NOTES
Exact location uncertain; UTMs from near center of township.
NO. 386
NAME Walker Unit
claims
COUNTY Lincoln
LOCATION Sec. 4(?), T2N,
R67E; Exact location unknown
UTMN 4215500
UTME
722000
QUAD Mount Wilson SW 7.5' (1970)
DEVELOPMENT
One shallow pit.
RADIOACTIVITY Background = 0.01 mR/hr;
High = 0.07 mR/hr. Two samples contained 0.01% eU3O8.
GEOLOGY A
bed of opalized tuff 2 to 10 feet thick is radioactive (0.05 mR/hr) over the
entire top of a low hill, some 40 acres. A soft, white, pumaceous tuff underlies
the opalized bed. Both units belong to the Pliocene-age Panaca
Formation.
RADIOACTIVE MINERALS Anomalously radioactive
opalized zones
HOST ROCK Volcanic: Pliocene Panaca
Formation
MAIN COMMODITIES U
OLD MAP NO.
259
REFERENCES AEC Report 3540; Garside, 1973.
NOTES
Exact location uncertain; UTMs from near center of Sec. 4.
NO. 387
NAME White Cloud
prospect
OTHER NAME Keg Mining Co. claim
COUNTY
Lincoln
LOCATION Center Sec. 3, T2S, R68E
UTMN
4187000
UTME 732000
DISTRICT
Panaca
QUAD Condor Canyon 7.5' (1970)
U PRODUCTION
A trial shipment of approximately 1,000 lbs. may have been
made.
DEVELOPMENT Three bulldozer cuts on a hillside, and 430
feet of churn drill holes.
RADIOACTIVITY (Surface): Background
= 0.07 mR/hr, Ave. = 0.05 mR/hr, High = 0.21 mR/hr (Drill holes, at 30 feet):
Background = 0.03 mR/hr; High = 0.6 mR/hr. Chip samples contain 0.01 to 0.16%
cU3O8; a selected sample ran 0.29% cU3O8.
GEOLOGY Carnotite is
present in carbonaceous plant remains, as coatings along joint surfaces and mud
cracks, and as irregular disseminations, in lenses 2 inches thick and 1 to 2
feet long, in a 1.6-foot zone in a 6-foot-thick bed of buff, water-laid tuff of
the flat-lying, Pliocene age Panaca Formation. Nearby these beds are
unconformable with the Middle Cambrian Highland Peak Limestone. Anomalous
radioactivity is present for at least several hundred feet along the outcrop.
The 1.6-foot zone contains about 0.05% U3O8 for over 400 feet of exposure. The
area of uranium mineralization is believed to represent a paludal facies of the
tuff.
RADIOACTIVE MINERALS carnotite
HOST ROCK
Sedimentary: Pliocene Panaca Formation
MAIN COMMODITIES
U
OLD MAP NO. 253
REFERENCES AEC Report 3544;
Westgate and Knopf, 1932; Davis and Hetland, 1956; Myerson, 1956; Finch, 1967;
Hetland, Sharp, and Warner, 1969; Cupp and others, 1977b; Garside, 1973; 1979;
Waters, 1955; Castor and Ferdock, 2004.
NOTES Exact location
uncertain; UTMs from near center of Sec. 3.
NO.
388
NAME White Light claim
COUNTY
Lincoln
LOCATION Sec. 33, T1N, R68E
UTMN
4198099
UTME 731774
DISTRICT
Pioche
QUAD Rose Valley 7.5' (1970)
DEVELOPMENT
A 12-foot-deep shaft.
RADIOACTIVITY Background = 0.004
mR/hr; High = 0.03 mR/hr
GEOLOGY Anomalous radioactivity occurs
along an east-west fissure in the Cambrian Highland Peak limestone. Hematite
staining is prominent, and minor amounts of manganese oxides are present. The
outcrop of Highland Peak is an inlier, surrounded by Tertiary volcanic
rocks.
RADIOACTIVE MINERALS Anomalously radioactive iron
oxide(?)
HOST ROCK Sedimentary: Cambrian Highland Peak
limestone
MAIN COMMODITIES Fe
OTHER COMMODITIES
Mn, U
OLD MAP NO. 262
REFERENCES AEC
Report 3542; Tschanz and Pampeyan, 1970; U.S. Geological Survey, 1995; Garside,
1973.
NOTES MASMILS: 320170006; UTMs from MASMILS
NO. 389
NAME White Light No. 9
claim
COUNTY Lincoln
LOCATION Sec. 32, T1N,
R68E
UTMN 4198054
UTME
730186
DISTRICT Pioche
QUAD Pioche 7.5'
(1980)
DEVELOPMENT A 5-foot-deep pit.
RADIOACTIVITY
Background = 0.016 mR/hr; High = 0.05 mR/hr
GEOLOGY
Anomalous radioactivity (probably due to uraniferous opal) is present in a
coarse, opalized gray tuff. Minor northeast fracturing is reported. The tuff
dips 25ºE.
RADIOACTIVE MINERALS uraniferous opal
HOST
ROCK Volcanic: opalized gray tuff
MAIN COMMODITIES
U
OLD MAP NO. 261
REFERENCES AEC Report 3541;
U.S. Bureau of Mines, 1995.
NOTES MASMILS: 320170233; UTMs from
MASMILS
NO. 390
NAME
Boerlin Ranch property
COUNTY Lyon
LOCATION
Sec. 13, T7N, R26E or Sec. 18, T7N, R27E; one-quarter mile west of the East
Walker River on a ridge top.
UTMN 4259000
UTME
324200
DISTRICT Washington
QUAD The Elbow 7.5'
(1989)
RADIOACTIVITY A sample contained 0.009%
cU3O8
GEOLOGY Slightly anomalous radioactivity is associated
with an altered, iron-stained fault zone in granodiorite. The zone is at least
80 feet long, up to 25 feet wide, and trends N65ºE.
RADIOACTIVE
MINERALS Anomalously radioactive iron oxide(?)
HOST ROCK
Intrusive: granodiorite
MAIN COMMODITIES U
OLD MAP
NO. 274
REFERENCES Staatz and Bauer, 1953, 1954c;
Mason and others, 1996; Garside, 1973.
NOTES MRDS: M035950,
M232530; Exact location uncertain; UTMs from near point about 0.25 miles west of
river.
NO. 391
NAME
Cambridge mine
COUNTY Lyon
LOCATION NE¼ Sec.
31, T10N, R27E
UTMN 4284010
UTME
325460
DISTRICT Wilson
QUAD Pine Grove Spring
7.5' (1988)
DEVELOPMENT At least three shafts and a number of
adits and pits.
GEOLOGY Trace uranium in
granodiorite.
RADIOACTIVE MINERALS uranium
HOST ROCK
Intrusive: granodiorite
MAIN COMMODITIES Ag,
Au
OTHER COMMODITIES U
REFERENCES Tingley,
1990; Quade and others, 1990a,b; Mason and others, 1996; Moore and Archbold,
1969; Garside, 1973.
NOTES MRDS: M035823, M232536; Same as
prospect with name unknown for Cambridge District(?)
NO. 392
NAME Clyde Garrett
property
COUNTY Lyon
LOCATION Sec. 24(?),
T16N, R20E, or Sec. 19(?), T16N, R21E; in the Mound House District in the
foothills of the Virginia Range near the Lyon County/Carson City
line.
UTMN 4346500
UTME
269000
DISTRICT Mound House
QUAD New Empire
7.5' (1994)
GEOLOGY Autunite occurrence. Area is underlain
mostly by Triassic mafic volcanic rocks and some Guild Mine Member of the Mickey
Pass Tuff.
RADIOACTIVE MINERALS Autunite
HOST ROCK
Volcanic: Triassic mafic volcanic rocks; Tertiary Guild Mine Member of
the Mickey Pass Tuff
MAIN COMMODITIES U
REFERENCES
Castor and Ferdock, 2004.
NOTES Exact location
uncertain; UTMs from near center of two sections. Same as Glacier King claim(?)
NO. 393
NAME
Curtiss-Wright property
COUNTY Lyon
LOCATION
SE¼ Sec. 10, T18N, R23E
UTMN 4367800
UTME
295120
DISTRICT Ramsey
QUAD Martin Canyon 7.5'
(1985)
GEOLOGY A few stains a yellowish uranium mineral,
uranophane(?), were noted at a prospect in rhyolite of the Kate Peak Formation
on the Curtiss-Wright property.
RADIOACTIVE MINERALS
uranophane(?)
HOST ROCK Volcanic: Kate Peak
Formation
MAIN COMMODITIES U
REFERENCES Rose,
1959, 1969
NOTES
NO.
394
NAME Eagle Feather group
COUNTY
Lyon
LOCATION Secs. 3, 4, 9, 10, T10N, R25E
UTMN
4291000
UTME 320000
DISTRICT
Wilson
QUAD Mount Etna 7.5' (1988); Wilson Canyon 7.5'
(1986)
RADIOACTIVITY Background = 0.05 mR/hr; High = 2.0 mR/hr.
A fossil bone assayed 0.158% U3O8.
GEOLOGY Fossil bones which
occur in Tertiary sandstone and conglomerate are moderately
radioactive.
RADIOACTIVE MINERALS Anomalously radioactive
carbonaceous material(?)
HOST ROCK Sedimentary: Fossil bones in
Tertiary sandstone and conglomerate
MAIN COMMODITIES
U(?)
OLD MAP NO. 284
REFERENCES AEC Report
3572; Mason and others, 1996; Garside, 1973.
NOTES Exact
location uncertain; UTMs from near center of four sections.
NO. 395
NAME Far West Willys
group
OTHER NAME Bonanza
COUNTY
Lyon
LOCATION Secs. 5, 6, T7N, R27E
UTMN
4262300
UTME 325800
DISTRICT
Washington
QUAD Ninemile Ranch 7.5' (1989); The Elbow 7.5'
(1989)
DEVELOPMENT Bulldozer cuts, two 40-foot shafts, and two
adits totaling 200 feet.
RADIOACTIVITY Samples from a selected
ore pile contained up to 0.165% U3O8.
GEOLOGY Nine quartz
veins, 2 inches to 1 foot in width, which strike east, dip steeply, and are
surrounded by envelopes of silicified and argillized quartz monzonite, crop out
on the claims. Only four of these have yielded samples that contain more than
0.01% uranium. These veins contain thin lenses and aggregates of epidote,
chrysocolla, tenorite, chalcocite, chalcopyrite, galena, and argentite. No
uranium minerals were recognized.
RADIOACTIVE MINERALS
uranium-bearing rock
HOST ROCK Intrusive: quartz
monzonite
MAIN COMMODITIES Ag, Au, U
OLD MAP NO.
270
REFERENCES AEC Reports 3593, 3594, 3574; Staatz and
Bauer, 1953, 1954c; Mason and others, 1996; Garside, 1973.
NOTES
MRDS: M035806; Exact location uncertain; UTMs from near center of two
sections.
NO. 396
NAME
Flyboy claims (Nos. 1-11)
OTHER NAME Fly Boy; McCoy prospect;
Strosnider's Ranch.
COUNTY Lyon
LOCATION NE¼
Sec. 16, T11N, R26E
UTMN 4298870
UTME
320180
QUAD Yerington SE 7.5' (1986)
U PRODUCTION
1961: Fifty tons of uranium ore were reportedly shipped but unknown if
commercial grade.
DEVELOPMENT 170 feet of adit, 15 feet of
drift. Workings were made in search of copper.
RADIOACTIVITY
Background = 0.02 mR/hr; High = 0.19 mR/hr. An 8-foot chip sample contained 0.06
eU3O8, and samples containing up to 0.26% U3O8 and 2.8% copper have been
reported.
GEOLOGY Geology: Uranium, copper, and molybdenum
mineralization is present in granite. Chalcopyrite and molybdenite are sparsely
disseminated in the granite, and secondary copper and uranium minerals occur
along several fractures and sheared areas, especially near aplite dikes.
Torbernite occurs as small rosettes in cavities, while autunite is present as
encrustations and colloform masses. Phosphuranylite and possibly uranophane also
reportedly occurs in the ore. Meta-autunite is also present.
RADIOACTIVE
MINERALS Autunite; meta-autunite; phosphuranylite; torbernite;
uranophane(?)
HOST ROCK Intrusive: granite
MAIN
COMMODITIES Cu, Mo, U
NBMG SAMPLE 4266
OLD MAP
NO. 283
REFERENCES AEC Report 3576; Schilling,
Butler, 1958, p. 127; U.S Bureau of Mines Minerals Yearbook, 1961; Tingley,
1990; Quade and others, 1990a,b; Mason and others, 1996; Garside, 1973; Castor
and Ferdock, 2004.
NOTES MRDS: M035828
NO. 397
NAME Flying “M”
prospect
COUNTY Lyon
LOCATION NW¼ Sec. 9, T7N,
R27E
UTMN 4261100
UTME
327900
DISTRICT Washington
QUAD Ninemile Ranch
7.5' (1989)
DEVELOPMENT Three short adits, several surface
trenches, and two drill holes
RADIOACTIVITY Assays of
0.004-0.19% U3O8 reported.
GEOLOGY Yellow, six-valent uranium
minerals occur as thick coatings on northeast-trending fracture surfaces in
Tertiary sedimentary rocks. The fracture zones are 8 to 12 feet wide and also
contain some iron-oxide minerals. The Tertiary rocks consist of interbedded
tuffaceous sandstones and diatomite. Many stream-sediment samples from the East
Walker River in this part of Lyon County contain over 10 ppm uranium and a few
contain over 20 ppm.
RADIOACTIVE MINERALS yellow, six-valent
uranium minerals
HOST ROCK Sedimentary: Tertiary sedimentary
rocks
MAIN COMMODITIES U
OLD MAP NO.
275B
REFERENCES Cupp and others, 1977b; Lawrence Livermore
Laboratory, 1976a; Garside, 1979.
NOTES Exact location
uncertain; UTMs from near center of quarter section.
NO. 398
NAME Glacier King No. 1
claim
COUNTY Lyon
LOCATION Center E½ Sec. 24,
T16N, R20E
UTMN 4345971
UTME
267837
DISTRICT Mound House
QUAD New Empire
7.5' (1994)
U PRODUCTION 1957: Some ore reportedly was shipped.
Reportedly 81 tons of ore with a grade of 0.34% U3O8 were shipped as of July
1960, producing 547 lbs U3O8.
DEVELOPMENT Several 3-m-deep
bulldozer cuts, dumps, a 60-m adit, and five drill
holes.
RADIOACTIVITY Background = 0.03 mR/hr; High = 1.2 mR/hr.
Radioactivity to 3000 cps. Samples contain as much as 0.34% eU3O8. A sample from
a trench contained 1418 ppm U3O8.
GEOLOGY Autunite(?),
meta-autunite, and iron oxides occur along a minor fault near the base of the
Tertiary Guild Mine Member of the Mickey Pass Tuff. The fault strikes
approximately east-west; carbonized wood is present locally.
RADIOACTIVE
MINERALS Autunite(?); meta-autunite
HOST ROCK
Volcanic: Tertiary Guild Mine Member of the Mickey Pass Tuff
MAIN
COMMODITIES U
OLD MAP NO. 278
REFERENCES
AEC Report 3578; U.S. Bureau of Mines Minerals Yearbook, 1957; E. C.
Bingler, oral commun., 1977; U.S. Geological Survey, 1995; Garside, 1973; 1979;
Castor and Ferdock, 2004; Hurley and others, 1982, no. 32.
NOTES
MASMILS: 0320190131; UTMs from MASMILS
NO. 399
NAME Grant View Hot
Spring
COUNTY Lyon
LOCATION SW¼ Sec. 4, T7N,
R27E; 300 feet east of the East Walker River.
UTMN
4261800
UTME 327900
DISTRICT
Washington
QUAD Ninemile Ranch 7.5'
(1989)
RADIOACTIVITY Moderate
GEOLOGY
Anomalous radioactivity is associated with a hot spring which has a water
temperature of about 110ºF. Samples of water analyzed some time after collection
contained only 0.002% uranium. The radioactivity of the spring is believed due
to radon in the water.
RADIOACTIVE MINERALS uranium
HOST
ROCK Sedimentary: hot springs deposits
MAIN COMMODITIES
Ra, U
OLD MAP NO. 273
REFERENCES AEC
Report 3589; Staatz and Bauer, 1953, 1954c; Davis, 1954; Garside and Schilling,
1979; Garside, 1973.
NOTES
NO.
400
NAME Halloween mine
COUNTY
Lyon
LOCATION NE¼ NE¼ NE¼ Sec. 8, T7N, R27E
UTMN
4261539
UTME 327343
DISTRICT
Washington
QUAD Mitchell Spring 7.5' (1989); Ninemile Ranch
7.5' (1989)
DEVELOPMENT One prospect
pit.
RADIOACTIVITY Background = 0.04 mR/hr; High = 0.40 mR/hr.
A select sample contained 0.15% eU3O8 and a 5.5-foot chip sample contained 0.07%
eU3O8.
GEOLOGY Uranium minerals are reported from a highly
weathered fault zone in granitic rock. Clay and iron oxides are present along
the zone, which trends N65ºE and dips 80ºNW. Autunite, meta-autunite,
uranophane, and carnotite(?) are reported.
RADIOACTIVE MINERALS
Autunite; carnotite(?); meta-autunite; uranophane
HOST ROCK
Intrusive: granitic rock
MAIN COMMODITIES U
OLD MAP
NO. 269
REFERENCES AEC Report 3570; Mason and
others, 1996; Garside, 1973; Castor and Ferdock, 2004; Nowak, 1979.
NOTES
MRDS: M035955; Location from Nowak, 1979.
NO. 401
NAME Kateydid
claim
COUNTY Lyon
LOCATION Sec. 4(?), T7N,
R27E; may be in section 3.
UTMN 4262200
UTME
329000
DISTRICT Washington
QUAD Ninemile Ranch
7.5' (1989)
DEVELOPMENT Bulldozer trench, 6-foot-deep pit, and
diamond drilling(?).
RADIOACTIVITY Background = 0.02 to 0.03
mR/hr, High = 1.5 mR/hr. A sample contained 0.17% eU3O8.
GEOLOGY
Uranophane(?) and zeunerite occur in a shear zone that strikes N80ºW in
granodiorite. Higher radioactivity is present at the intersection of this shear
zone with a south-trending fault.
RADIOACTIVE MINERALS
uranophane(?); zeunerite
HOST ROCK Intrusive:
granodiorite
MAIN COMMODITIES U
OLD MAP NO.
271
REFERENCES AEC Report 3568; Mason and others, 1996;
Garside, 1973; Castor and Ferdock, 2004
NOTES MRDS: M035805;
Exact location uncertain; UTMs from near center of two sections.
NO. 402
NAME Lava Cap group (7
claims)
COUNTY Lyon
LOCATION Center Sec. 23,
T17N, R22E
UTMN 4355220
UTME
286320
DISTRICT Red Mountain
QUAD Misfits Flat
7.5' (1985)
DEVELOPMENT Three bulldozer
cuts.
RADIOACTIVITY Background = 0.15 mR/hr; High = 0.30 mR/hr.
A 2-foot vertical chip sample contained 0.40% U3O8. Hurley and others (1982)
report radioactivity over 12 times background and up to 546 ppm
U3O8.
GEOLOGY Anomalous radioactivity occurs along a
north-south trending fault in Cretaceous(?) granitic rocks just below a
disconformable contact with the overlying Tertiary ash-flow tuffs. The highest
radioactivity is in the gouge zone of the fault, where a very minor amount of
autunite(?) was noted. Slightly anomalous radioactivity is present over an area
of a few hundred square feet. Meta-autunite also present.
RADIOACTIVE
MINERALS Autunite(?); meta-autunite
HOST ROCK
Intrusive: Cretaceous(?) granitic rocks
MAIN COMMODITIES
U
OLD MAP NO. 277
REFERENCES AEC Report 3571;
Garside, 1973; Castor and Ferdock, 2004; Hurley and others, 1982, no.
30.
NOTES
NO.
403
NAME Little Red Head group
OTHER NAME
Little Red Head No. 1
COUNTY Lyon
LOCATION
Sec. 12(?), T14N, R26E; Exact location unknown
UTMN
4328800
UTME 325000
DISTRICT
Yerington
QUAD Hinkson Slough 7.5'
(1987)
RADIOACTIVITY Background = 0.05 mR/hr; High = 3.0
mR/hr
GEOLOGY Yellow, crystalline uranium minerals occur along
a silicified fault(?) zone in Tertiary rhyolite and tuff. This prospect could
not be located in 1970.
RADIOACTIVE MINERALS yellow,
crystalline uranium minerals
HOST ROCK Volcanic: Tertiary
rhyolite and tuff
MAIN COMMODITIES U
OLD MAP NO.
279
REFERENCES AEC Report 3579; Finch, 1967; Garside,
1973.
NOTES Exact location uncertain; UTMs from near center
Sec. 12.
NO. 404
NAME
Locality 127782
COUNTY Lyon
LOCATION NW¼ NW¼
Sec. 8, T7N, R27E
UTMN 4261550
UTME
326063
DISTRICT Washington
QUAD Ninemile Ranch
7.5' (1989)
GEOLOGY Uranophane is reported from an aplite dike
which cuts Cretaceous quartz monzonite.
RADIOACTIVE MINERALS
uranophane
HOST ROCK Intrusive: aplite
MAIN
COMMODITIES U
REFERENCES Nowak, 1979
NOTES
NO. 405
NAME
Noonday claims (Nos. 1-4)
OTHER NAME Noon Day
COUNTY
Lyon
LOCATION SE¼ Sec. 15, T13N, R24E
UTMN
4317540
UTME 302680
DISTRICT
Yerington
QUAD Artesia Lake 7.5' (1986)
DEVELOPMENT
Trenches and pits.
RADIOACTIVITY Background = 0.03 to
O.04mR/hr; High = 0.5 mR/hr; 1-foot chip samples contained 0.016 and 0.003%
eU3O8.
GEOLOGY Anomalous radioactivity occurs near the base of
Oligocene ash-flow tuff.
HOST ROCK Volcanic: Oligocene ash-flow
tuff
MAIN COMMODITIES U
OLD MAP NO.
281
REFERENCES AEC Report 3577; Tingley, 1990; Quade and
others, 1990a,b; Mason and others, 1996; Garside, 1973.
NOTES
MRDS: M035889
NO. 406
NAME
Northwest Willys group (2 claims)
COUNTY
Lyon
LOCATION Sec. 29, T8N, R27E
UTMN
4265700
UTME 326600
DISTRICT
Washington
QUAD Mitchell Spring 7.5'
(1989)
DEVELOPMENT Two bulldozer cuts and two prospect
pits.
RADIOACTIVITY A sulfide-bearing pod contains 0.03%
U3O8.
GEOLOGY Two steeply dipping quartz veins trend
east-northeast and cut granite. A pod of pyrite, chalcopyrite, galena, limonite
and secondary copper minerals has the highest radioactivity.
RADIOACTIVE
MINERALS Anomalously radioactive chalcopyrite, galena, limonite,
marcasite, pyrite, and secondary copper minerals
HOST ROCK
Intrusive: granite
MAIN COMMODITIES Cu, Pb, U
OLD MAP
NO. 266
REFERENCES AEC Report 3588, 3591; Staatz and
Bauer, 1953, 1954c; Mason and others, 1996; Garside, 1973.
NOTES
MRDS: M035808, M232532; Exact location uncertain; UTMs from near
center of Sec. 29.
NO. 407
NAME
Occurrence (T10N, R27E)
OTHER NAME Cambridge district;
Pine Grove district
COUNTY Lyon
LOCATION Sec.
31(?), T10N, R27E
UTMN 4283500
UTME
325300
DISTRICT Wilson
QUAD Pine Grove Spring
7.5' (1988)
GEOLOGY Gold ore from a claim south of the
Cambridge mine is reportedly radioactive. The wall rock is
granite.
RADIOACTIVE MINERALS Anomalously radioactive gold
ore
HOST ROCK Intrusive: granite
MAIN COMMODITIES
U(?)
OLD MAP NO. 286
REFERENCES Mining
Journal, 1942; Garside, 1973.
NOTES Exact location uncertain;
UTMs from near center of Sec. 31.
NO.
408
NAME Pitch claims
COUNTY
Lyon
LOCATION N½ Sec. 9, T8N, R25E
UTMN
4271500
UTME 309200
QUAD Nye Canyon 7.5'
(1988)
DEVELOPMENT One 32-foot inclined shaft (caved), a 6-foot
adit, and a bulldozer bench.
RADIOACTIVITY Background =.0.02
mR/hr; High = 0.04 mR/hr. A chip sample from the shear zone contained 0.01%
eU3O8.
GEOLOGY Very slightly anomalous radioactivity is present
along an iron-stained, westerly trending fracture in a light gray to buff
fragmental tuff. The fracture dips 80ºN.
HOST ROCK Volcanic:
light gray to buff fragmental tuff
MAIN COMMODITIES U
OLD
MAP NO. 287
REFERENCES AEC Report 3567; Mason and
others, 1996; Garside, 1973.
NOTES MRDS: M035968; Exact
location uncertain; UTMs from near center of half section.
NO. 409
NAME Quartz mine group
(7 claims)
COUNTY Lyon
LOCATION Secs. 28(?),
33(?), T8N, R27E; Exact location unknown This prospect may be in the vicinity of
the Washington district.
UTMN 4265000
UTME
328000
DISTRICT Washington
QUAD Mitchell
Spring 7.5' (1989)
DEVELOPMENT Several bulldozer
cuts.
RADIOACTIVITY Background = 0.03 mR/hr; High = 0.52 mR/hr.
A 1.5-foot chip sample contained 0.07% eU3O8.
GEOLOGY Autunite
and meta-autunite is sparsely disseminated in decomposed granitic rock. A
copper-bearing quartz vein is reportedly present in the vicinity of the
prospect.
RADIOACTIVE MINERALS Autunite;
meta-autunite
HOST ROCK Intrusive: decomposed granitic
rock
MAIN COMMODITIES Cu, U
OLD MAP NO.
268
REFERENCES AEC Report 3569; Mason and others, 1996;
Garside, 1973; Castor and Ferdock, 2004.
NOTES MRDS: M035970;
Exact location uncertain; 15 miles due SW of Walker Lake is approximately in
sections 28 and 33; UTMs from near center of two sections.
NO. 410
NAME Ramsey
prospects
COUNTY Lyon
LOCATION Sec. 10(?) or
14(?), T18N, R23E
UTMN 4367500
UTME
295400
DISTRICT Ramsey
QUAD Martin Canyon 7.5'
(1985); Stockton Well 7.5' (1985
GEOLOGY Radioactive prospects
are reported in Oligocene ash-flow tuff from the area south of Ramsey. None of
these localities could be found in 1969.
HOST ROCK Volcanic:
Oligocene ash-flow tuff
MAIN COMMODITIES U(?)
OLD MAP
NO. 276
REFERENCES Schilling; 1963; Rose, 1969, p.
27; Garside, 1973.
NOTES Exact location uncertain; UTMs from
near center of two sections.
NO.
411
NAME River Road mine
OTHER NAME River Road
prospect
COUNTY Lyon
LOCATION SW¼ Sec. 3, T7N,
R27E
UTMN 4261875
UTME
329369
DISTRICT Washington
QUAD Ninemile Ranch
7.5' (1989)
U PRODUCTION 1956-1957: A test shipment of 45 tons
of uranium ore was shipped in 1956. Some production was reported in
1957.
DEVELOPMENT Bulldozer cuts and a
shaft.
RADIOACTIVITY Background = 0.02 mR/hr; High = 0.40
mR/hr. A 2.5-foot chip sample contained 0.02% eU3O8, and another 1.7-foot chip
sample contained 0.03% eU3O8. Conglomerate samples contain up to 1974
ppm.
GEOLOGY Tertiary sedimentary rocks (tuffs, sandstones,
shales, etc.) overlie a coarsely crystalline quartz monzonite. Radioactivity is
localized in the sedimentary rocks. Durham and Felmlee (1982) reported the
radioactivity to be 40 times background at a property they called the Halloween
Mine at the geographic coordinates of the River Road Mine. They reported up to
6000 ppm U3O8 in sheared Tertiary siltstone near a fault separating granitic
rocks from the sedimentary rocks.
HOST ROCK Sedimentary:
Tertiary sedimentary rocks
MAIN COMMODITIES U
OLD MAP
NO. 275A
REFERENCES Cupp and others, 1977b; AEC
Report 3573;U.S Bureau of Mines Minerals Yearbook 1957; Mason and others, 1996;
Garside, 1973; 1979; Nowak, 1979; Durham and Felmlee, no. 4.
NOTES
MRDS: W016488; Location from Nowak, 1979. Halloween Mine of Durham
and Felmlee (1982).
NO. 412
NAME
Silver Pick property
OTHER NAME Osborn and Bassman
property; White Hot claims(?); Meridian Resources(?)
COUNTY
Lyon
LOCATION NW¼ NW¼ NW¼ Sec. 2, T7N, R27E
UTMN
4263160
UTME 330680
DISTRICT
Washington
QUAD Mitchell Spring 7.5' (1989)
U
PRODUCTION Mid 1950s: Mine on White Hot claims: two carloads of
material averaging 14 lbs U3O8
DEVELOPMENT Several pits and
bulldozer cuts, a 30-foot-deep shaft, a 37-foot incline, a 16-foot adit, and
nearly 40 feet of drift (1953).
RADIOACTIVITY Assays of seven
samples ranged 0.004 to 0.2% U
GEOLOGY Autunite(?),
meta-autunite, and torbernite occur locally along a shear zone in quartz
monzonite. The zone strikes N30°E and dips 50°NW. Scattered small nodules of
quartz containing galena, chalcocite, and silver minerals are found in gouge
along the altered zone.
RADIOACTIVE MINERALS Autunite(?);
meta-autunite; torbernite
HOST ROCK Intrusive: quartz
monzonite
MAIN COMMODITIES Ag, Au, U
OLD MAP NO.
272
REFERENCES AEC Reports 3586, 3590; Staatz and Bauer,
1953, 1954c; Mason and others, 1996; Garside, 1973; 1979; Walker and Irwin,
1952; Nowak, 1979; Castor and Ferdock, 2004; Crompton, ca. 1975.
NOTES
MRDS: M035101; Uncertain if these were the White claims of the 1960s
or the same mine that had mid-1950s production. Map shows Sec. 2 as part of this
property but not SW¼, Sec. 3 which contains the River Road mine that did have
1950s production.
NO. 413
NAME
Snowball No.1 prospect
COUNTY Lyon
LOCATION
SE¼ Sec. 17, T7N, R27E
UTMN 4258778
UTME
326887
DISTRICT Washington
QUAD
Ninemile Ranch 7.5' (1989)
DEVELOPMENT Prospect
pit.
RADIOACTIVITY Background = 0.02 mR/hr; High = 0.6 mR/hr. A
2-foot chip sample contained 0.04% eU3O8.
GEOLOGY An
unidentified yellow radioactive mineral is reported from a highly altered,
varicolored, rhyolitic volcanic rock. Zeunerite was identified from a sample
reportedly from this claim. Nowak (1979) reported the host rock to be
amphibole-rich metasedimentary rock.
RADIOACTIVE MINERALS
unidentified yellow radioactive mineral; zeunerite
HOST ROCK
Volcanic: highly altered, varicolored, rhyolitic volcanic rock or possibly
metasedimentary rock.
MAIN COMMODITIES U
OLD MAP NO.
288
REFERENCES AEC Report 3575; Mason and others, 1996;
Garside, 1973; Nowak, 1979.
NOTES Location from Nowak, 1979
NO. 414
NAME Teddy claims
(Nos. 1-24)
COUNTY Lyon
LOCATION Sec. 5(?),
T8N, R27E
UTMN 4272000
UTME
327000
DISTRICT Washington
QUAD Mitchell
Spring 7.5' (1989)
DEVELOPMENT Three bulldozer
cuts.
RADIOACTIVITY Background = 0.02 mR/hr; High = 0.16 mR/hr.
Samples reportedly range from 0.108 to 0.58% cU3O8.
GEOLOGY
Uraninite, uranophane, chrysocolla, malachite, and limonite are reported from a
milky quartz vein 2 to 4 feet wide. The vein cuts a coarsely crystalline quartz
monzonite, and strikes N70ºW and dips 70ºS.
RADIOACTIVE MINERALS
uraninite; uranophane
HOST ROCK Intrusive: coarsely
crystalline quartz monzonite
MAIN COMMODITIES Cu, U
OLD
MAP NO. 265
REFERENCES AEC Report 3583(1); Mason and
others, 1996; Garside, 1973; Castor and Ferdock, 2004.
NOTES
MRDS: M035969; Exact location uncertain; UTMs from near center of Sec. 5.
NO. 415
NAME Well 13/23-25
cbl
COUNTY Lyon
LOCATION NW¼ SW¼ Sec. 25,
T13N, R23E
UTMN 4314800
UTME
295200
DISTRICT Buckskin
QUAD Artesia Lake
7.5' (1986)
GEOLOGY A water sample from this well contained
amounts of radium (2.5 micromicrocuries per liter) which are slightly anomalous
for this region. This 540-foot-deep well may penetrate Tertiary sediments and
volcanics below the alluvium, and possibly reflects the radioelement content of
the volcanic rocks.
RADIOACTIVE MINERALS radon dissolved in
water
HOST ROCK Volcanic: volcanics below the alluvium; well
water
MAIN COMMODITIES U(?)
OLD MAP NO.
282
REFERENCES AEC Report 3577; Garside, 1973;
1979.
NOTES Exact location uncertain; UTMs from near center of
quarter-quarter section.
NO.
416
NAME West Willys group (7 claims)
OTHER NAME
Old Washington claim; Washington mine
COUNTY
Lyon
LOCATION SW¼ NE¼ Sec. 33, T8N, R27E
UTMN
4264150
UTME 328350
DISTRICT
Washington
QUAD Mitchell Spring 7.5'
(1989)
DEVELOPMENT Seven adits ranging from 31 to 367 feet in
length (Old Washington claim), and several shallow shafts, pits, and other
workings (for silver).
RADIOACTIVITY Background = 0.02 mR/hr;
High (copper oxides on dumps) = 0.08 mR/hr. Samples from veins contain from
0.002 to 0.165% U3O8.
GEOLOGY Radioactivity is associated with
thin layers of sulfide minerals in quartz veins which cut a porphyritic quartz
monzonite. Four zones of these veins are present on this group of claims.
Minerals reported include epidote, barite, galena, chalcopyrite, pitchblende,
argentite(?), chrysocolla, chalcocite, torbernite, uranophane, and kasolite.
Individual quartz veins range from 1 inch to 1.5 feet thick. Anomalous
radioactivity may be in part associated with copper oxides.
RADIOACTIVE
MINERALS kasolite, pitchblende, torbernite, uranophane
HOST
ROCK Intrusive: porphyritic quartz monzonite
MAIN
COMMODITIES Ag
OTHER COMMODITIES Cu, U
OLD MAP
NO. 267
REFERENCES AEC Report 3592; Staatz and
Bauer, 1953, 1954c; Walker, Osterwald, and Adams, 1963; Mason and others, 1996;
Garside, 1973; Castor and Ferdock, 2004; Nowak, 1979.
NOTES
MRDS: M035807, M232531; Nowak (1979) reported the Washington Mine in SW¼ NE¼
Sec. 33, and the Peabody Mine near the boundary of Sec. 32 and 33.
NO. 417
NAME White Rose and
White Rose No.1 claims
COUNTY Lyon
LOCATION
NW¼ Sec. 16, T10N, R26E
UTMN 4289000
UTME
318500
DISTRICT Wilson
QUAD Pine Grove Spring
7.5' (1988)
DEVELOPMENT Prospect pit. Plans to drill
reported.
RADIOACTIVITY Background = 0.05 mR/hr; High = 0.70
mR/hr. Five-foot and 3.5-foot channel samples contain 0.02 and 0.015% eU3O8
respectively. Select samples are considerably higher. Chemical assays are
usually higher than radiometric.
GEOLOGY Carnotite, gypsum, and
sulfur(?) are reported as coatings along fractures and joints in diatomaceous
beds of Miocene or Pliocene age. The mineralized outcrop was not visible in the
prospect pit in 1979.
RADIOACTIVE MINERALS carnotite
HOST
ROCK Miocene or Pliocene diatomaceous beds
MAIN COMMODITIES
U
OLD MAP NO. 285
REFERENCES AEC Report
3580; Finch, 1967; Powers and Finch, 1955; Cupp and others, 1977b; Mason and
others, 1996; Garside, 1973; 1979; Castor and Ferdock, 2004.
NOTES
MRDS: M035834; Exact location uncertain; UTMs from near center of
quarter section.
NO. 418
NAME
Yellow Twin prospect
COUNTY Lyon
LOCATION
Sec.19, T14N, R27E
UTMN 4325247
UTME
325872
DISTRICT Yerington
QUAD Hinkson Slough
7.5' (1987)
DEVELOPMENT One bulldozer cut in
hillside.
RADIOACTIVITY 2 time background over several meters.
Up to 102 ppm U3O8.
GEOLOGY Anomalous radioactivity is
associated with silicification, iron staining, and argillization(?) in Tertiary
rhyolitic ash-flow tuff. The uranium is apparently concentrated along an
iron-stained fracture that cuts a silicified tree limb.
HOST ROCK
Volcanic: Tertiary ash-flow tuff
MAIN COMMODITIES
U
REFERENCES Hurley and others, 1982, no. 35.
NOTES
Location from Hurley and others (1982).
NO. 419
NAME Yerington
property
OTHER NAME Yerington open pit mine
COUNTY
Lyon
LOCATION Secs. 16, 17, 20, 21, T13N,
R25E
UTMN 4317000
UTME
310000
DISTRICT Yerington
QUAD Yerington 7.5'
(1986)
DEVELOPMENT Open-pit copper
mine.
RADIOACTIVITY Up to 4 times background. Select samples
contained 0.05% cU3O8 (about 10 times the average for felsic igneous rocks). A
chrysocolla vein contained 247 ppm U3O8.
GEOLOGY Slightly
anomalous amounts of uranium were found in select dump samples from Anaconda
Copper Co.'s property. The highest radioactivity was associated with heavy
coatings of azurite on slightly mineralized porphyry. Uranium apparently became
concentrated in the copper leach solutions during ore processing, and there are
reports that an attempt was made by Anaconda to recover uranium. Anomalous
uranium is found in groundwater in the vicinity of the open-pit mine (Reno
Gazette Journal, 3/25/2004).
RADIOACTIVE MINERALS
uranium
HOST ROCK Intrusive: porphyry
MAIN
COMMODITIES Cu
OTHER COMMODITIES Ag, Fe, Mo,
U
NBMG SAMPLE 4361, 4362
OLD MAP NO.
280
REFERENCES King and Roberts, 1954b; Moore and Archbold,
1969; Tingley, 1990; Quade and others, 1990a,b; Mason and others, 1996; Garside,
1973; Associated Press, 2004; Hurley and others, 1982, no. 39.
NOTES
MRDS: M035859
NO.
420
NAME 4 D claims (Nos. 1 and 2)
OTHER NAME
Cinderella claim; 4-0
COUNTY Mineral
LOCATION
Sec. 11, T4N, R32E (protracted)
UTMN 4230130
UTME
378100
DISTRICT Marietta
QUAD Little
Huntoon Valley 7.5' (1967)
DEVELOPMENT Older caved incline
shaft (gold-silver prospect). More recent workings include several open cuts; a
gentle, 100-foot-long incline shaft, and a 50-foot-deep vertical
shaft.
RADIOACTIVITY Reports vary from 20 to 25 times
background. Samples contain between 0.12 and 0.56% eU3O8 (0.115 and 0.540%
cU3O8.
GEOLOGY Colored uranium oxide minerals (kasolite?,
gummite?, and uranophane?) occur with galena, copper stain, and gold and, silver
values in several small quartz veins. The quartz veins occur in granitic rocks,
and strike N30 to 40ºW. Uranophane-beta is present as yellow-orange groups with
individual crystals up to 1.5 mm in quartz veins in granitic
rock.
RADIOACTIVE MINERALS gummite(?); kasolite(?);
uranophane(?); uranophane-beta
HOST ROCK Intrusive: granitic
rocks
MAIN COMMODITIES Ag, Au
OTHER COMMODITIES
U
NBMG SAMPLE 3577
OLD MAP NO.
313
REFERENCES AEC Reports 3611, 3626, 3625; Ross, 1961, pl. 1
and table 6.7; Tingley, 1990; Quade and others, 1990a,b; Mason and others, 1996;
Garside, 1973; Castor and Ferdock, 2004; Durham and Felmlee, 1982, no
6.
NOTES MRDS: M035432
NO.
421
NAME Black Hawk claims
OTHER NAME B
and P claim; Last Chance prospect; New Strike claims
COUNTY
Mineral
LOCATION NW¼ Sec. 15, T9N, R32E
(unsurveyed).
UTMN 4278950
UTME
379020
DISTRICT Fitting
QUAD Kinkaid NW 7.5'
(1979)
DEVELOPMENT One bulldozer cut.
RADIOACTIVITY
Background = 0.03 mR/hr; High = 1.5 mR/hr. Select samples range from 0.08
to 0.41% eU3O8 (0.052 to 0.383% cU3O8). A 3-foot chip sample contained 0.06%
eU3O8.
GEOLOGY An iron deposit, mainly magnetite, occurs in a
long, narrow roof pendant of Triassic Luning Formation in a granitic intrusive.
The roof pendant is nearly a mile long and from a few feet to several hundred
feet wide. Small veinlets and lenses of magnetite have replaced limestone. The
anomalous radioactivity occurs as patches and lenses in the magnetite. The
largest magnetite body occurs on the Black Hawk claim, near the northeast end of
the pendant. Zinc and copper minerals are also reported.
RADIOACTIVE
MINERALS Anomalously radioactive magnetite
HOST ROCK
Sedimentary: Triassic Luning Formation
MAIN COMMODITIES
Fe
OTHER COMMODITIES Cu, U, Zn
OLD MAP NO.
292
REFERENCES AEC Report 3604, 3620; Reeves, Shaw, and Kral,
1958, p. 76; Tingley, 1990; Quade and others, 1990a,b; Mason and others, 1996;
Garside, 1973.
NOTES MRDS: M035666; Exact location uncertain;
UTMs from near center of quarter section.
NO.
422
NAME Blue Bottle, Blue Bottle Nos. 2 and 3
claims
COUNTY Mineral
LOCATION W½ Sec. 16,
T9N, R31E
UTMN 4277740
UTME
366320
DISTRICT Fitting
QUAD Ryan Canyon 7.5'
(1987)
DEVELOPMENT Several prospect pits and shallow shafts.
Workings are an old copper prospect.
RADIOACTIVITY Background =
0.02 mR/hr; High = 0.25 mR/hr
GEOLOGY Radioactivity occurs with
iron and copper oxides in a fissure vein in granite.
RADIOACTIVE
MINERALS Anomalously radioactive copper and iron oxide
HOST
ROCK Intrusive: granite
MAIN COMMODITIES Cu,
U
NBMG SAMPLE 3675, 3676
OLD MAP NO.
291
REFERENCES AEC Report 3616; Tingley, 1990; Quade and
others, 1990a,b; Mason and others, 1996; Garside, 1973.
NOTES
MRDS: M035963
NO. 423
NAME
Blue Boy and Marietta claims
COUNTY
Mineral
LOCATION Sec. 10, T4N, R32E; Exact location
unknown
UTMN 4230800
UTME
376800
DISTRICT Marietta
QUAD Little Huntoon
Valley 7.5' (1967)
U PRODUCTION One test shipment was
reportedly made (average = 0.09% cU3O8) from the Blue Boy.
DEVELOPMENT
Several open cuts.
RADIOACTIVITY Background = 0.03
mR/hr; High = 0.3 to 0.4 mR/hr
GEOLOGY Autunite, meta-autunite,
and uranophane reportedly occur in shear zones, probably in granitic rock. One
northerly-trending shear zone on the Marietta claims displays anomalous
radioactivity over its entire length, and can be traced to the Yellow Sky claims
to the north.
RADIOACTIVE MINERALS Autunite; meta-autunite;
uranophane
HOST ROCK Intrusive: granitic rocks
MAIN
COMMODITIES U
OLD MAP NO. 312
REFERENCES
AEC Report 3635; Mason and others, 1996; Garside, 1973; Castor and
Ferdock, 2004.
NOTES MRDS: M035983; Exact location uncertain;
UTMs from near center of Sec. 10.
NO.
424
NAME Blue Ox prospect
COUNTY
Mineral
LOCATION Sec. 9, T9N, R33E
UTMN
4279200
UTME 386300
DISTRICT
Fitting
QUAD Win Wan Flat 7.5' (1979)
DEVELOPMENT
Unknown.
RADIOACTIVITY Hand samples are anomalously
radioactive. The sample reportedly contains 0.5% ThO2.
GEOLOGY
Metamict thorite is reported from scapolite. This prospect may be similar or the
same prospect as the Elna claims. Section 9 is mostly underlain by the Jurassic
Dunlap Formation with Jurassic granodiorite along the western
edge.
RADIOACTIVE MINERALS thorite
HOST ROCK
Sedimentary/Intrusive: Jurassic Dunlap Formation; Jurassic
granodiorite
MAIN COMMODITIES Th, U
OLD MAP NO.
305
REFERENCES Garside, 1973; Ekren and Byers, 1985;
Castor and Ferdock, 2004.
NOTES Exact location uncertain; UTMs
from near center of Sec. 9.
NO.
425
NAME Broken Bow and Broken Bow King groups
OTHER
NAME Blue Star claim
COUNTY
Mineral
LOCATION Sec. 31, T9N, R34E
UTMN
4272120
UTME 393260
DISTRICT
Fitting
QUAD Luning 7.5' (1980)
U PRODUCTION
1957: A few tons of “acceptable grade” ore shipped.
DEVELOPMENT
Three small pits.
RADIOACTIVITY Background = 0.04 mR/hr; High =
1.5 mR/hr. Two-foot chip samples range from 0.05 to 0.20%
eU3O8.
GEOLOGY Uranium minerals occur as surface coatings and
disseminations throughout a well indurated sandstone at or very near the contact
with a granitic intrusive. Torbernite(?), saleeite, and novacekite are present
with iron staining and clays.
RADIOACTIVE MINERALS novacekite;
saleeite; torbernite(?)
HOST ROCK Sedimentary: well indurated
sandstone
MAIN COMMODITIES U
OLD MAP NO.
297A
REFERENCES AEC Report 3596; Finch, 1967; Tingley, 1990;
Quade and others, 1990a,b; Mason and others, 1996; Garside, 1973; U.S. Bureau of
Mines Yearbook, 1957; Castor and Ferdock, 2004; Durham and Felmlee, 1982, no.
9.
NOTES MRDS: M035967; UTMs from site in Tingley (1990) and
Quade and others (1990a,b).
NO.
426
NAME Bubbles claims
COUNTY
Mineral
LOCATION Secs. 27, 28, 29, T14N, R30E
UTMN
4323280
UTME 359640
DISTRICT Red
Ridge
QUAD Terrill Mountains 7.5' (1987); Red Ridge 7.5'
(1987)
DEVELOPMENT Several small pits.
RADIOACTIVITY
Background = 0.05 mR/hr; High = 1.5 mR/hr. A fossil log was 4 times
background and contained 338 ppm U3O8.
GEOLOGY Carnotite is
present in abundant opalized wood and along altered zones in a rhyolitic tuff.
Anomalous radioactivity was noted for about 500 feet along the base of a small
hill. This radioactivity may be related to an old lake
shoreline.
RADIOACTIVE MINERALS carnotite
HOST ROCK
Volcanic: opalized wood in a rhyolitic tuff
MAIN COMMODITIES
U
OLD MAP NO. 290
REFERENCES AEC Report
3628; Satkowski and others, 1985; Garside, 1973; Castor and Ferdock, 2004;
Hurley and others, 1982, no. 37.
NOTES UTMs from location noted
on map in Satkowski and others, 1985
NO.
427
NAME Buff property
COUNTY
Mineral
LOCATION Sec. 34(?), T7N, R34E Exact location
unknown
UTMN 4253000
UTME
397000
QUAD Mina NW 7.5' (1982)
GEOLOGY Most
of the N½ of Section 34 is underlain by Triassic carbonate, and the S½ and
central western edge is underlain by Cretaceous quartz monzonite.
HOST
ROCK Sedimentary/Intrusive: Triassic carbonate; Cretaceous quartz
monzonite
MAIN COMMODITIES U(?)
OLD MAP NO.
300
REFERENCES AEC Report N-SL-113 (not available); Garside,
1973; Oldow and Speed, 1985.
NOTES Exact location uncertain;
UTMs from near center of Sec. 34.
NO.
428
NAME Carol R mine
OTHER NAME Hawthorne
prospect; Wespac group; Amalgamated Uranium Co.; Ule Ann-Little Nickie-Black
Hill-Popcorn-Gary Uranium property; M and M Porcupine property; Big M Uranium
Co.
COUNTY Mineral
LOCATION Sec. 36, T8N,
R31E, and Sec. 31, T8N, R32E
UTMN 4263620
UTME
371620
DISTRICT Pamlico
QUAD Kinkead 7.5'
(1979)
U PRODUCTION 1954: 7 railroad cars of uranium-bearing
rock shipped; all below 0.2% and half below 0.1% U3O8
DEVELOPMENT
One small open pit and several bulldozer cuts. Recent drilling reported
(1972).
RADIOACTIVITY Background = 0.02 mR/hr; High = 3.0
mR/hr. A select sample contained 0.94% cU3O8. Drill Hole No. 1 interval 80-126
feet contained 0.258% U3O8; Drill Hole No. 2 interval 80- 126 feet contained
0.175% U3O8
GEOLOGY Carnotite occurs between grains and
disseminated along bedding and fractures in Tertiary basaltic, water-laid tuffs
and tuffaceous sandstones. The sediments overlie granite, and lie beneath a
basalt flow, and are intruded by a small, perlitic rhyolite neck. They are only
a few tens of feet thick. The tuffaceous sandstones consist of alternating thin
beds of coarse- and fine-grained material, with a 10-foot-thick bentonitic clay
unit at the base, above granodiorite. The uranium mineralization occurs along
the margin of the perlitic intrusion in the sedimentary rocks. Some
radioactivity was also noted in the basalt. The rhyolite neck appears to be
younger than the basalts. Conglomerates and boulder beds are interbedded with
the basalts higher in the section, but only very minor uranium mineralization
was noted in these.
RADIOACTIVE MINERALS carnotite
HOST
ROCK Sedimentary: Tertiary basaltic, water-laid tuffs and tuffaceous
sandstones
MAIN COMMODITIES U
OLD MAP NO.
322
REFERENCES AEC Report 3621; Davis and Hetland, 1956; Finch,
1967; Ross, 1961, p. 76 and pl. 1; Powers and Finch, 1955;U.S Bureau of Mines
Minerals Yearbooks 1955, 1956; Cupp and others, 1977b; Tingley, 1990; Quade and
others, 1990a,b; Mason and others, 1996; Garside, 1973; 1979; Londry, 1977;
Waters, 1955; Mallory and Halstead, 1956; Castor and Ferdock, 2004; Durham and
Felmlee, 1982, no. 7.
NOTES MRDS: M233210
NO. 429
NAME Contact group (7
claims)
COUNTY Mineral
LOCATION Sec. 27(?),
T13N, R33E
UTMN 4314540
UTME
392800
DISTRICT Rawhide
QUAD Mount Annie 7.5'
(1980)
DEVELOPMENT Bulldozer cuts, trenches, and a shallow
shaft.
RADIOACTIVITY Background: 0.04 mR/hr; High = 0.60 mR/hr;
a 2.foot chip sample contained 0.06% eU3O8.
GEOLOGY Anomalous
radioactivity occurs along the brecciated portion of a contact between granitic
rocks and a silicified limestone. Opalized portions of this zone seem to be the
most radioactive. The limestone is probably part of the Triassic(?) Excelsior
Formation.
RADIOACTIVE MINERALS Anomalously radioactive
opalized zones
HOST ROCK Sedimentary/Intrusive: Triassic(?)
Excelsior Formation; granitic rocks
MAIN COMMODITIES
U
OLD MAP NO. 320
REFERENCES AEC Report 3637;
Mason and others, 1996; Garside, 1973.
NOTES MRDS: M035961;
UTMs from MRDS.
NO. 430
NAME
Denny D claims (Nos. 1-9)
OTHER NAME Old Red Hot claims
(18 claims); Red Hot claims; Beach Gold Mines; Ltd.
COUNTY
Mineral
LOCATION S½ Sec. 32, T7N, R29E
UTMN
4253500
UTME 345800
DISTRICT
Borealis
QUAD Corey Peak 7.5' (1989)
DEVELOPMENT
Cuts and shallow pit.
RADIOACTIVITY Background =
0.03-0.04 mR/hr; High = 1.0 mR/hr. Two- and 3-foot chip samples contained 0.10
and 0.022% eU3O8 respectively. 3-14 times background, up to 410 ppm
U3O8.
GEOLOGY Brecciated portions of a large quartz dike are
anomalously radioactive. Iron staining and black (smoky) quartz are reported.
The quartz dike cuts a granitic intrusive.
RADIOACTIVE MINERALS
Anomalously radioactive iron oxide(?)
HOST ROCK Intrusive:
quartz dike cutting granitic intrusion
MAIN COMMODITIES
U
OLD MAP NO. 324
REFERENCES AEC Report 3617;
Garside, 1973; Crompton, ca. 1975; Mason and others, 1996; Durham and Felmlee,
1982, no. 5
NOTES MRDS: M035956; Exact location uncertain; UTMs
from near center of half section.
NO.
431
NAME Dixie group (Nos. 1-26)
OTHER NAME
Silver Queen mine
COUNTY Mineral
LOCATION Sec.
16(?), T9N, R33E; Exact location uncertain
UTMN
4276880
UTME 387740
DISTRICT
Fitting
QUAD Win Wan Flat 7.5' (1979)
DEVELOPMENT
A 400-foot adit and an inclined shaft (Silver Queen
mine).
RADIOACTIVITY Background = 0.11 mR/hr; High = 0.22
mR/hr. A select sample contained 0.01% eU3O8.
GEOLOGY
Radioactivity is reported along a major southeast-trending fault and
occasionally along joint planes in a black porphyritic andesite(?). Autunite and
meta-autunite are present, as well as copper sulfate, limonite, hematite, and
argentiferous galena.
RADIOACTIVE MINERALS Autunite;
meta-autunite
HOST ROCK Volcanic: black porphyritic
andesite(?)
MAIN COMMODITIES Ag, Pb, Sb
OTHER
COMMODITIES Cu, Fe, U
NBMG SAMPLE 3646
OLD MAP
NO. 294
REFERENCES AEC Report 3602; Tingley, 1990;
Quade and others, 1990a,b; Mason and others, 1996; Garside, 1973; Castor and
Ferdock, 2004.
NOTES MRDS: M035683
NO. 432
NAME Elna
claims
COUNTY Mineral
LOCATION Sec. 2(?), T8N,
R33E
UTMN 4271000
UTME
389300
DISTRICT Fitting
QUAD Indian Head Peak
7.5' (1979)
DEVELOPMENT Several pits.
RADIOACTIVITY
Background = 0.015 mR/hr; High = 1.0 mR/hr. A sample from a stockpile
contains 0.12% eU3O8, but only 0.038% cU3O8.
GEOLOGY
Uranothorite and wernerite (scapolite) reportedly occur in a fault breccia zone.
Sec. 2 is mostly underlain by Quaternary alluvium with Pliocene fanglomerate
underlying part of the NE¼.
RADIOACTIVE MINERALS
uranothorite
HOST ROCK Sedimentary: Quaternary alluvium;
Pliocene fanglomerate
MAIN COMMODITIES U
OLD MAP NO.
303
REFERENCES AEC Report 3608; Garside, 1973; Ekren and
Byers, 1985; Castor and Ferdock, 2004.
NOTES MRDS: M035966;
Exact location uncertain; UTMs from near center of Sec. 2.
NO. 433
NAME Eureka claims (Nos.
1-3)
COUNTY Mineral
LOCATION Sec. 9(?), T7N,
R36E (unsurveyed).
UTMN 4259200
UTME
414800
DISTRICT Santa Fe
QUAD Bettles Well
7.5' (1980)
DEVELOPMENT Several small prospect
pits.
RADIOACTIVITY Background = 0.04 mR/hr: High = 0.20 mR/hr.
Two samples contained 0.083 and 0.012% eU3O8.
GEOLOGY Anomalous
radioactivity occurs in fossilized wood in a siltstone lens interbedded with a
series of volcanic flows.
RADIOACTIVE MINERALS Anomalously
radioactive carbonaceous material
HOST ROCK Sedimentary:
fossilized wood in a siltstone lens
MAIN COMMODITIES
U
OLD MAP NO. 321
REFERENCES AEC Report 3636;
Garside, 1973.
NOTES Exact location uncertain; UTMs from near
center of Sec. 9.
NO. 434
NAME
Glen Brook and others claims
OTHER NAME Erin Rose vein;
Valley View vein
COUNTY Mineral
LOCATION NW¼
NW¼(?), Sec. 14, T4N, R32E
UTMN 4229800
UTME
377600
DISTRICT Marietta
QUAD Little Huntoon
Valley 7.5' (1967)
U PRODUCTION About 1957: 50 tons ore shipped
(assay 0.027% eU3O8) from Erin Rose vein.
DEVELOPMENT Bulldozer
cuts and prospect pits
RADIOACTIVITY Background = 0.03 mR/hr;
High = 0.5 mR/hr. Samples contain between 0.01 and 0.03% e
U3O8.
GEOLOGY Radioactive material occurs in local pods and
stringers of vein quartz in a fracture system in quartz monzonite. Iron and
manganese stains are locally abundant in vein quartz.
RADIOACTIVE
MINERALS Anomalously radioactive iron oxide(?)
HOST ROCK
Intrusive: granitic rocks
MAIN COMMODITIES
U
REFERENCES Campbell, 1957
NOTES Exact
location uncertain and is likely in the far NW¼ section; UTMs from near center
of quarter-quarter section.
NO.
435
NAME Guranium group (10 claims)
COUNTY
Mineral
LOCATION SW¼ Sec. 24, T14N, R29E
UTMN
4324670
UTME 353400
DISTRICT Holy
Cross
QUAD Terrill Mountains 7.5' (1987)
DEVELOPMENT
A 150-foot-deep shaft and 300 feet of drifts. Workings for
silver.
RADIOACTIVITY Background, 200 cps; High, 1,000 cps. Up
to 49 ppm U3O8.
GEOLOGY Radioactivity occurs along a N42ºW
vertical fault zone in Tertiary ash-flow tuff (Mickey Pass Tuff?). The fault
zone averages 1 m in width and can be traced for ~150 m. The highest uranium
contents are associated with iron oxide minerals and botryoidal copper arsenate.
Copper and silver mineralization are the reason for the workings.
HOST
ROCK Volcanic: Tertiary ash-flow tuff
MAIN COMMODITIES
Ag, Cu, U(?)
OLD MAP NO. 318
REFERENCES
AEC Report 3606; Tingley, 1990; Quade and others, 1990a,b; Garside, 1973; Hurley
and others, 1982, no. 36.
NOTES
NO. 436
NAME Happy Return
mine
OTHER NAME Rechel; Happy Return claims (9
claims)
COUNTY Mineral
LOCATION Sec. 27, T14N,
R32E (protracted)
UTMN 4322470
UTME
382100
DISTRICT Rawhide
QUAD Big Kasock
Mountain 7.5' (1980)
DEVELOPMENT 54 feet of inclined shafts, 40
feet of vertical shaft, 95 feet of drifts, and several other short adits. Work
was done for antimony.
RADIOACTIVITY Background = 0.04 mR/hr;
High = 0.10 mR/hr (surface), 0.40 mR/hr (underground). Approximately 12 times
background (Hurley and others, 1982). Up to 518 ppm in a quartz
vein.
GEOLOGY Radioactivity, generally associated with antimony
oxides, occurs along minor faults in a granodiorite. The main antimony ore vein
strikes N80ºE, and dips 65ºN. Stibnite, galena, antimony oxides, and limonite
are reported.
RADIOACTIVE MINERALS Anomalously radioactive
antimony oxides
HOST ROCK Intrusive: granodiorite
MAIN
COMMODITIES Ag, Sb, Pb
OTHER COMMODITIES
U(?)
OLD MAP NO. 319
REFERENCES AEC Report
3603; Lawrence, 1963, p. 126, 127; Ross, 1961; Tingley, 1990; Quade and others,
1990a,b; Garside, 1973; Hurley and others, 1982, no. 38.
NOTES
NO. 437
NAME Holiday
mine
OTHER NAME Holiday and Falcon claims; Holly Daze and
Jiminy Cricket mine.
COUNTY Mineral
LOCATION
NW¼ Sec. 10, T8N, R33E
UTMN 4269820
UTME
386900
QUAD Indian Head Peak 7.5' (1979)
U PRODUCTION
1955: Possibly a small amount of production
DEVELOPMENT
Development: About 170 feet of underground workings.
RADIOACTIVITY
Background: (quartz monzonite) = 0.02 mR/hr, (near mine) = 0.04 mR/hr;
High = 5 mR/hr. Selected samples assay as high as 0.22% U3O8 and 0.85% ThO2.
Durham and Felmlee (1982) reported 1.7%U3O8 in felsite from a dump
sample.
GEOLOGY Anomalous radioactivity, and yellow, brown, and
black uranium and thorium minerals, occur in elongate bodies up to several feet
in length. The radioactive minerals have been identified as thorite, huttonite,
and uranothorite (Ross, 1961). Very smoky (nearly black) concentrations of
radioactive quartz are often present in or near the radioactive bodies.
Plagioclase is somewhat altered in the mineralized areas. The radioactive areas
occur in an irregular-shaped dike of sodic plagioclase (albitite) in the hanging
wall of a fault which separates the dike from the quartz monzonite which it
intrudes. Quartz segregations occur in the albitite, but quartz is not present
as individual grains in the dike material. The dike rock resembles rocks that
have been called Helsinkites in Finland. It consists of sodic plagioclase, with
minor epidote and accessory biotite, muscovite, and apatite. Uranium- and
thorium-rich areas and radioactive quartz bodies occur as local segregations,
both underground and at the surface. The dike is nearly vertical, trends
approximately N50ºW, and has been displaced by faults in several places. It can
be found 66 feet from the portal of the adit but occurs in only the floor and a
15-foot-deep winze. The author visited this deposit in 1969. Thorogummite also
present.
RADIOACTIVE MINERALS huttonite; uranothorite; thorite;
thorogummite
HOST ROCK Intrusive: quartz monzonite
MAIN
COMMODITIES Th, U
OLD MAP NO.
302
REFERENCES AEC Report 3598; Ross, 1961, p. 76, pl. 1, and
table 6.2; Olson and Adams, 1962;U.S Bureau of Mines Minerals Yearbook, 1955;
Tingley, 1990; Quade and others, 1990a,b; Mason and others, 1996; Garside, 1973;
Castor and Ferdock, 2004; Crompton, ca. 1975; Durham and Felmlee, 1982, no.
8.
NOTES MRDS: M035640
NO.
438
NAME Houndog claims (18 claims)
OTHER NAME
Buena Vista mine; Mount Montgomery mine; Queens mine; Vol
claims(?)
COUNTY Mineral
LOCATION Secs 1, 2,
T1N, R32E
UTMN 4203600
UTME
380400
DISTRICT Buena Vista
QUAD Mount
Montgomery 7.5' (1987); Truman Meadows 7.5' (1994)
OTHER PRODUCTION
Before 1920: Small gold and silver production from Queens
mine
DEVELOPMENT Adit and prospect pits
GEOLOGY
Thin beds of quartzite, slaty rock, hornfels and minor marble intruded by
diorite and granite prophyry dikes. Skarn occurs locally and consists of garnet,
epidote, calcite, quartz, idocrase, fluorite, molybdenite, pyrite, and a little
scheelite. Hand samples largely rhyolite breccia with veins with minor quartz,
fine-grained pyrite, sulfides, and some iron-stained gouge.
HOST ROCK
Volcanic/Sedimentary: rhyolite; quartzite, slaty rock, hornfels and minor
marble
MAIN COMMODITIES Ag, Au
OTHER COMMODITIES
Mo, U, W
NBMG SAMPLE 3740, 3741, 3742, 3743,
3744
REFERENCES Crompton, ca. 1975; Mason and others, 1996;
Stager and Tingley, 1985
NOTES MRDS: D011059; Crompton (ca.
1975) is the only reference to U. UTMs from adit in Sec. 1; Queens Mine in Sec.
2 but apparently part of part of Houndog group.
NO. 439
NAME Ideal
mine
COUNTY Mineral
LOCATION Sec. 31, T8N,
R35E
UTMN 4262710
UTME
402440
DISTRICT Santa Fe
QUAD Sunrise Flat
7.5' (1980)
OTHER PRODUCTION Before 1922: Several cars of hand
sorted copper ore running 2 to 4% copper.
DEVELOPMENT Inclined
shaft and at least two levels.
RADIOACTIVITY Radioactivity
associated with vein material.
GEOLOGY Chalcopyrite present.
Silicate zones with garnet, epidote, and gossan along limestone-igneous
contact.
RADIOACTIVE MINERALS Anomalously radioactive
chalcopyrite(?)
HOST ROCK Sedimentary: limestone
MAIN
COMMODITIES Cu
OTHER COMMODITIES
U
REFERENCES Tingley, 1990; Quade and others, 1990a,b; Mason
and others, 1996; Clark, 1922
NOTES MRDS: M035567
NO. 440
NAME Iron Gate
group
COUNTY Mineral
LOCATION Sec. 35(?), T7N,
R34E; Exact location unknown
UTMN 4253170
UTME
398700
QUAD Mina NW 7.5' (1982)
GEOLOGY
Butler, Finch, and Twenhofel (1962) report a uranium occurrence at the location
given above. It is reportedly of a type which includes veins, breccia zones,
stockworks, and related deposits. An iron mine of the same name (Iron Gate mine)
is located in Sec. 33, T8N, R35E. It is not known whether this is the same
occurrence. Section 35 is mostly by Triassic carbonate, sandstone, and
conglomerate with some Cretaceous quartz monzonite in the far SW part of the
section.
RADIOACTIVE MINERALS uranium-bearing rock
HOST
ROCK Sedimentary: Triassic carbonate, sandstone, and
conglomerate
MAIN COMMODITIES U
OLD MAP NO.
301
REFERENCES Butler, Finch, and Twenhofel, 1962; Mason and
others, 1996; Garside, 1973; Oldow and Speed, 1985.
NOTES MRDS:
M035163; Exact location uncertain; UTMs from near center of Sec. 35.
NO. 441
NAME Jeep
prospect
COUNTY Mineral
LOCATION Sec. 6(?),
T7N, R28E; Exact location unknown
UTMN 4262200
UTME
334700
DISTRICT Washington
QUAD
Ninemile Ranch 7.5' (1989)
DEVELOPMENT One shallow
pit.
RADIOACTIVITY Background = 0.025 mR/hr; High = 0.05
mR/hr
GEOLOGY Very slight radioactivity occurs in a
diatomaceous bed capped by rhyolite.
RADIOACTIVE MINERALS
Anomalously radioactive diatomite
HOST ROCK Sedimentary:
diatomaceous bed
MAIN COMMODITIES U
OLD MAP NO.
323
REFERENCES AEC Report 3623; Tingley, 1990; Quade and
others, 1990a,b; Garside, 1973.
NOTES MRDS: M035972; Exact
location uncertain; UTMs from near center of Sec. 6.
NO. 442
NAME King David
group
OTHER NAME King David prospect
COUNTY
Mineral
LOCATION Sec. 28, T8N, R32E
UTMN
4265190
UTME 375800
DISTRICT
Pamlico
QUAD Kinkaid 7.5' (1979)
DEVELOPMENT
Old cuts, adits, and shafts developed in search of
copper.
RADIOACTIVITY Background = 0.05 mR/hr; High = 0.30
mR/hr. A select sample contained 0.019% eU3O8.
GEOLOGY
Radioactivity is associated with magnetite, hematite, and copper minerals which
occur sporadically in limestone of the Triassic(?) Excelsior Formation. Jaspery
gossan, associated with copper ores, has been prospected for
iron.
RADIOACTIVE MINERALS Anomalously radioactive copper
minerals, hematite, and magnetite
HOST ROCK Sedimentary:
Triassic(?) Excelsior Formation
MAIN COMMODITIES Cu,
Fe
OTHER COMMODITIES U
OLD MAP NO.
299
REFERENCES AEC Report 3619; Ross, 1961, table 6.3; Reeves,
Shaw, and Kral, 1958, p. 75, 76; Tingley, 1990; Quade and others, 1990a,b; Mason
and others, 1996; Garside, 1973.
NOTES MRDS: M035653
NO. 443
NAME Lady group (Nos.
1-6)
OTHER NAME Yellow Sky and Horseshoe claims; Pink Lady
claims; Corosey(?)
COUNTY Mineral
LOCATION
S½(?) T5N, R32E; Exact location unknown
UTMN
4235500
UTME 376000
DISTRICT
Marietta
QUAD Rattlesnake Flat 7.5'
(1980)
DEVELOPMENT Prospect and discovery
pits.
RADIOACTIVITY Background = 0.01 mR/hr; High = 0.35 mR/hr.
A select sample reportedly contained 1.3% eU3O8.
GEOLOGY
Radioactivity is associated with minor faults in granitic rock, where torbernite
occurs as fracture coatings. On the Pink Lady claims, radioactive pegmatites are
reported, and possibly contain samarskite(?).
RADIOACTIVE MINERALS
samarskite(?); torbernite
HOST ROCK Intrusive: granitic
rocks
MAIN COMMODITIES U
OLD MAP NO.
308
REFERENCES AEC Report 3622; Garside, 1973; Castor and
Ferdock, 2004.
NOTES Exact location uncertain; UTMs from near
center of the south half of township.
NO.
444
NAME Lost Sheep claims
COUNTY
Mineral
LOCATION Sec. 13(?), T10N, R33E; near the head of
Wildhorse Canyon.
UTMN 4284800
UTME
383800
QUAD Win Wan Flat 7.5' (1979)
DEVELOPMENT
One small pit.
RADIOACTIVITY Background = 0.04 mR/hr;
High = 0.09 mR/hr. A 3-foot vertical chip sample contained only a trace of
uranium.
GEOLOGY A dark rhyolite was very slightly radioactive
at one spot. Pyrite was also reported.
HOST ROCK Volcanic: dark
rhyolite
MAIN COMMODITIES U
OLD MAP NO.
296A
REFERENCES AEC Report 3600; Mason and others, 1996;
Garside, 1973.
NOTES MRDS: M035962; Exact location uncertain;
UTMs from near the head of Wildhorse Canyon.
NO.
445
NAME Lucky Ann, Nos. 1 and 2
COUNTY
Mineral
LOCATION SE¼(?) T9N, R33E; Exact location
unknown
UTMN 4274800
UTME
390740
DISTRICT Fitting
QUAD Indian Head Peak
7.5' (1979)
DEVELOPMENT Two prospect pits and a 20-foot
inclined shaft.
RADIOACTIVITY Background = 0.04 mR/hr (surface)
to 0.10 mR/hr (underground); High = 0.10 mR/hr (surface) to 0.20 mR/hr
(underground). A 6-foot chip sample contained 0.02% eU3O8.
GEOLOGY
Radioactivity was detected in veins of calcite, opal(?) and silica
(sinter) which cut a dolomite. Mineralization is also present in an underlying
black basaltic andesite(?). Copper silicates, calcite, siderite, and
uranophane(?) are reported.
RADIOACTIVE MINERALS
uranophane(?)
HOST ROCK Sedimentary/Volcanic: dolomite; black
porphyritic andesite(?)
MAIN COMMODITIES Cu, U
OLD MAP
NO. 295
REFERENCES AEC Report 3601; Mason and
others, 1996; Garside, 1973.
NOTES MRDS: M035965; UTMs from
MRDS.
NO. 446
NAME Lucky
Horseshoe claim
COUNTY Mineral
LOCATION Sec.
27(?) oR21(?), T5N, R32E; also possibly in Sec. 16.
UTMN
4237300
UTME 375200
DISTRICT
Marietta
QUAD Rattlesnake Flat 7.5'
(1980)
DEVELOPMENT Several open cuts and
trenches.
RADIOACTIVITY Background = 0.04 mR/hr; High = 0.2
mR/hr. A 1.5-foot chip sample contained 0.061% U3O8.
GEOLOGY An
altered shear zone up to 100 feet wide strikes N80ºW in granitic rock. Autunite,
meta-autunite, kasolite(?), torbernite(?) and iron oxides are present in
subsidiary fractures within this zone.
RADIOACTIVE MINERALS
Autunite; kasolite(?); meta-autunite; torbernite(?
HOST ROCK
Intrusive: granitic rocks
MAIN COMMODITIES U
OLD MAP
NO. 309
REFERENCES AEC Report 3615; Garside, 1973;
Castor and Ferdock, 2004.
NOTES Exact location uncertain; UTMs
from near center of Sec. 21.
NO.
447
NAME Lucky Susan No.1 claim
OTHER NAME
Lucky Susan prospect
COUNTY Mineral
LOCATION
Sec. 35(?), T1N, R32E
UTMN 4195500
UTME
379000
DISTRICT Buena Vista
QUAD Mount
Montgomery 7.5' (1987); Truman Meadows 7.5' (1994)
DEVELOPMENT
Small pits and trenches.
RADIOACTIVITY Radioactivity:
Background = 0.02 mR/hr; High = 1.2 mR/hr
GEOLOGY Samarskite
and euxinite are present in pegmatite dikes which cut granitic rocks and older
hornblende schist and gneiss.
RADIOACTIVE MINERALS euxinite;
samarskite
HOST ROCK Intrusive: pegmatite dikes
MAIN
COMMODITIES U
OLD MAP NO. 329
REFERENCES
AEC Report 3605; Ross, 1961, p. 76 and pl. 1; Olson and Adams, 1962;
Staatz, 1964; Mason and others, 1996; Garside, 1973; Castor and Ferdock,
2004.
NOTES MRDS: M233013; Exact location uncertain; UTMs from
near center of Sec. 35.
NO.
448
NAME Lunning Mining Co. claims
OTHER NAME
Luning Mining Co. claims
COUNTY Mineral
LOCATION
Sec. 36(?), T9N, R34E (unsurveyed). Eight miles north of Luning, 100
yards to the north of the highway.
UTMN 4272510
UTME
401080
DISTRICT Santa Fe
QUAD Luning
7.5' (1980)
DEVELOPMENT Old workings for silver and
copper.
RADIOACTIVITY Background = 40 cps; High = 170 cps. A
select sample contained 0.01% U3O8.
GEOLOGY Slightly anomalous
radioactivity has been reported from the Luning (Sante Fe) district. The
radioactivity is probably associated with iron-stained fractures in Tertiary
volcanic rocks. The area of radioactivity could not be located in
1970.
RADIOACTIVE MINERALS Anomalously radioactive iron
oxide(?)
HOST ROCK Volcanic: Tertiary volcanic rocks
MAIN
COMMODITIES Ag
OTHER COMMODITIES Cu, U
OLD MAP
NO. 298
REFERENCES AEC Report 3631; Davis, 1954, p.
21; Tingley, 1990; Quade and others, 1990a,b; Mason and others, 1996; Garside,
1973.
NOTES MRDS: M035630
NO.
449
NAME Mineral Jackpot prospect
COUNTY
Mineral
LOCATION Sec. 16, T4N, R32E (unsurveyed).
Projected from west
UTMN 4228610
UTME
374830
DISTRICT Marietta
QUAD Little Huntoon
Valley 7.5' (1967)
DEVELOPMENT Two prospect
pits.
RADIOACTIVITY Background = 0.04 mR/hr; High = 0.4 mR/hr.
A chip sample across one vein contained 0.09% eU3O8.
GEOLOGY
Anomalous radioactivity occurs sporadically along several 6-inch quartz veins
that cut a quartz monzonite. The vein system trends N80ºW, and continues for 100
feet. Tourmaline, magnetite, pyrite, molybdenite, limonite, and lepidolite are
reportedly present. Gold and silver values have also been noted.
HOST
ROCK Intrusive: quartz monzonite
MAIN COMMODITIES
Ag, Au
OTHER COMMODITIES Fe, Mo, U
OLD MAP NO.
317
REFERENCES AEC Report 3599; Tingley, 1990; Quade and
others, 1990a,b; Mason and others, 1996; Garside, 1973.
NOTES
MRDS: M035442
NO. 450
NAME
Nevada Uranium No.1 claim
COUNTY
Mineral
LOCATION Sec. 1(?), T6N, R29E; Exact location
unknown
UTMN 4252300
UTME
352150
DISTRICT Borealis
QUAD Lucky Boy 7.5'
(1989)
RADIOACTIVITY Radioactivity: Background = 0.05 mR/hr;
High = 0.15 mR/hr
GEOLOGY A silicified rhyolite is slightly
radioactive at this locality.
HOST ROCK Volcanic: silicified
rhyolite
MAIN COMMODITIES U
OLD MAP NO.
326
REFERENCES AEC Report 3610; Mason and others, 1996;
Garside, 1973.
NOTES MRDS: M035977; Exact location uncertain;
UTMs and section location from MRDS.
NO.
451
NAME Northern Belle mine
OTHER NAME
Argentum mine
COUNTY Mineral
LOCATION Center
Sec. 33, T4N, R35E Projected from the east
UTMN
4223430
UTME 404870
DISTRICT
Candelaria
QUAD Candelaria 7.5' (1982)
OTHER
PRODUCTION 1871-1878: 122,251 tons of mostly Ag ore valued at
$6,728,909
DEVELOPMENT A 1,365-foot-deep shaft and several
miles of workings developed in mining of silver.
RADIOACTIVITY
(Underground): Background = 0.025 mR/hr; High = 0.15 mR/hr
GEOLOGY
Anomalous radioactivity was noted along an iron-stained seam on the
700-foot level. Highly oxidized manganiferous silver veins occur in shales of
the Triassic Candelaria Formation throughout the workings.
RADIOACTIVE
MINERALS Anomalously radioactive iron oxide(?)
HOST ROCK
Sedimentary: Triassic Candelaria Formation
MAIN COMMODITIES
Ag
OTHER COMMODITIES Au, Mn, Sb, Pb, U
OLD MAP
NO. 328
REFERENCES AEC Rept 3612; Ross, 1961, p. 81,
table 6.2; Tingley, 1990; Quade and others, 1990a,b; Mason and others, 1996;
Garside, 1973; Couch and Carpenter, 1943
NOTES MRDS: M035481
NO. 452
NAME Occurrence
(T10N, R35E)
COUNTY Mineral
LOCATION Secs. 16,
17, 20, 21, T10N, R35E
UTMN 4286000
UTME
403000
QUAD Gabbs Mountain 7.5' (1979)
DEVELOPMENT
Bulldozer cuts(?) in white Tertiary sedimentary rocks.
GEOLOGY
Colored uranium minerals are reported from white Tertiary sedimentary
rocks.
RADIOACTIVE MINERALS colored uranium minerals
HOST
ROCK Sedimentary: Tertiary sedimentary rocks
MAIN
COMMODITIES U
OLD MAP NO. 296B
REFERENCES
Frank Kleinhampl, oral commun., 1977; Garside, 1979.
NOTES
Exact location uncertain; UTMs from near center of four sections.
NO. 453
NAME Occurrence
(T14N, R30E)
COUNTY Mineral
LOCATION Sec.
14(?), T14N, R30E
UTMN 4325500
UTME
362000
DISTRICT Red Ridge
QUAD Red Ridge 7.5'
(1987)
GEOLOGY Occurrence similar to that at Bubbles claims;
carnotite is present in abundant opalized wood and along altered zones in a
rhyolitic tuff.
RADIOACTIVE MINERALS carnotite
HOST
ROCK Volcanic: opalized wood in a rhyolitic tuff
MAIN
COMMODITIES U
REFERENCES Satkowski and others, 1985;
Garside, 1973.
NOTES UTMs from near point “2 miles northeast”
of Bubbles claim as noted in Satkowski and others, 1985; same as Robinson
claims(?)
NO. 454
NAME
Occurrence (T8N, R33E)
COUNTY Mineral
LOCATION
Corner of Secs. 3, 4, 9, and 10, T8N, R33E (unsurveyed).
UTMN
4270200
UTME 386900
QUAD Indian Head Peak 7.5'
(1979)
DEVELOPMENT A 100-foot adit and a small
pit.
GEOLOGY A radioactive anomaly is reported in altered
granitic rocks.
HOST ROCK Intrusive: granitic rocks
MAIN
COMMODITIES U(?)
OLD MAP NO.
304
REFERENCES Ross, 1961, p. 76 and pl. 1; Garside,
1973.
NOTES Exact location uncertain; UTMs from near center of
four sections.
NO. 455
NAME
Old Virginia City mines
COUNTY
Mineral
LOCATION Secs. 7, 8(?), T5N, R30E
UTMN
4241000
UTME 354000
QUAD Powell Mountain 7.5'
(1989)
DEVELOPMENT Several pits, adits, and shafts as a result
of copper-silver exploration.
RADIOACTIVITY Background = 0.04
mR/hr; High = 0.2 mR/hr. A channel sample contained 0.015%
eU3O8.
GEOLOGY Mineralized fractures in a granitic intrusion
contain chrysocolla, silver(?), and other copper oxides. These fractures are
radioactive. The wall rock is granite.
RADIOACTIVE MINERALS
Anomalously radioactive chrysocolla, other copper minerals, and silver
oxides(?)
HOST ROCK Intrusive: granite
MAIN
COMMODITIES Ag
OTHER COMMODITIES Cu, U
OLD MAP
NO. 307
REFERENCES AEC Report 3618; Mason and
others, 1996; Garside, 1973.
NOTES MRDS: M035981; Exact
location uncertain; UTMs from near center of Sec. 9.
NO. 456
NAME Ramshead
claims
COUNTY Mineral
LOCATION Sec. 27(?),
T9N, R34E
UTMN 4273800
UTME
397200
DISTRICT Fitting
QUAD Luning 7.5'
(1980)
DEVELOPMENT Owned by Ralph Fullington of
Mina
GEOLOGY Radioactive occurrences reported along fault and
in granite (also possibly in Tertiary sedimentary rocks). The granite may be
slightly anomalously radioactive.
HOST ROCK Intrusive:
granite
MAIN COMMODITIES U(?)
OLD MAP NO.
297B
REFERENCES Garside, 1979.
NOTES Exact
location uncertain; UTMs from near center of Sec. 27.
NO. 457
NAME Red Stone group
(Nos. 1-6?)
OTHER NAME Neva-Cal Mining
Enterprise
COUNTY Mineral
LOCATION NE¼ Sec.
31, T5N, R32E
UTMN 4234700
UTME
372500
DISTRICT Marietta
QUAD Rattlesnake Flat
7.5' (1980)
DEVELOPMENT Open cuts
GEOLOGY
Metatorbernite(?) occurs in north(?)-trending stringers in granitic
rock.
RADIOACTIVE MINERALS metatorbernite(?)
HOST
ROCK Intrusive: granitic rocks
MAIN COMMODITIES
U
OLD MAP NO. 310
REFERENCES Ross, 1961, pl. 1
and table 6.7; Mason and others, 1996; Garside, 1973; Castor and Ferdock,
2004.
NOTES MRDS: M035984; Exact location uncertain; UTMs from
near center of quarter section.
NO.
458
NAME Relich prospect
COUNTY
Mineral
LOCATION Sec. 26, T5N, R27E; along Bodie-Aurora road
where it crosses the Nevada-California boundary.
UTMN
4237220
UTME 329470
DISTRICT
Aurora
QUAD Aurora 7.5' (1989)
RADIOACTIVITY
Background = 0.03 mR/hr; High = 0.11 mR/hr
GEOLOGY
Radioactivity is apparently uniformly distributed in certain areas of rhyolite
and rhyolitic tuff. No structures were reported.
HOST ROCK
Volcanic: rhyolite and rhyolitic tuff
MAIN COMMODITIES
U
OLD MAP NO. 327
REFERENCES Walker, Lovering,
and Stephens, 1956, p. 34; Garside, 1973.
NOTES MRDS: M035980
NO. 459
NAME Robinson
claims
OTHER NAME Ribonson
COUNTY
Mineral
LOCATION Secs. 21, 23, T14N, R30E
UTMN
4324700
UTME 361800
DISTRICT Red
Ridge
QUAD Terrill Mountains 7.5' (1987); Red Ridge 7.5'
(1987)
DEVELOPMENT Several prospect
pits.
RADIOACTIVITY About four times background. A select
sample contained 0.45% cU3O8, and a channel sample 0.02%
cU3O8.
GEOLOGY A uranium vanadate, probably carnotite, occurs
in opalized plant material (including an opalized log) in a 1- to 3-foot
tuffaceous bed. This bed lies at the base of a quartz latite welded tuff(?).
Radioactivity is present over a distance of 1,000 feet along this bed. Another
nearby tuff bed is also radioactive.
RADIOACTIVE MINERALS
carnotite(?); uranium vanadate
HOST ROCK Volcanic(?): opalized
plant material in a tuffaceous bed
MAIN COMMODITIES U,
V
OLD MAP NO. 289
REFERENCES AEC Report 3634;
Finch, 1967; Garside, 1973; Castor and Ferdock, 2004.
NOTES
Exact location uncertain; UTMs from near center of Sec. 23.
NO. 460
NAME Sample locality
22A
COUNTY Mineral
LOCATION NE¼ NE¼ Sec. 31,
T5N, R32E
UTMN 4234520
UTME
372820
DISTRICT Marietta
QUAD Rattlesnake Flat
7.5' (1980)
RADIOACTIVITY Sample assayed 50 ppm eU3O8 and 42
ppm U3O8.
GEOLOGY Argillized Cretaceous quartz
monzonite.
RADIOACTIVE MINERALS uranium-bearing rock
HOST
ROCK Intrusive: Cretaceous quartz monzonite
MAIN
COMMODITIES U
REFERENCES Borbas, 1977
NOTES
NO. 461
NAME
Sample locality 23C
COUNTY Mineral
LOCATION
NE¼ NE¼ Sec. 31, T5N, R32E
UTMN 4234670
UTME
372720
DISTRICT Marietta
QUAD Rattlesnake Flat
7.5' (1980)
RADIOACTIVITY Sample assayed 50 ppm eU3O8 and 36
ppm U3O8.
GEOLOGY Argillized Cretaceous quartz
monzonite.
RADIOACTIVE MINERALS uranium-bearing rock
HOST
ROCK Intrusive: Cretaceous quartz monzonite
MAIN
COMMODITIES U
OLD MAP NO. 311B
REFERENCES
Borbas, 1977, pl. 1 and 2; Garside, 1979.
NOTES
NO. 462
NAME Sample locality
29
COUNTY Mineral
LOCATION N½ Sec. 32, T5N,
R32E
UTMN 4234580
UTME
373710
DISTRICT Marietta
QUAD Rattlesnake Flat
7.5' (1980)
RADIOACTIVITY Sample assayed 280 ppm eU3O8 and 2
ppm U3O8.
GEOLOGY Argillized Cretaceous quartz
monzonite.
RADIOACTIVE MINERALS uranium-bearing rock
HOST
ROCK Intrusive: Cretaceous quartz monzonite
MAIN
COMMODITIES U
REFERENCES Borbas, 1977
NOTES
NO. 463
NAME
Sequoui
COUNTY Mineral
LOCATION Sec. 14(?),
T8N, R34E; 3 miles north of Luning railhead, ½ mile (east?) from paved
road
UTMN 4268000
UTME
398500
DISTRICT Santa Fe
QUAD Luning 7.5'
(1980)
DEVELOPMENT Small bulldozer cut.
RADIOACTIVITY
3-foot sample cut across zone of strongest mineralization assayed 0.02
U3O8 (chem).
GEOLOGY Uranium mineralization is in coarse white
rhyolitic tuff which nas been mottled with pink hematite stain. The tuff seems
to have considerable areal extent and overlies intrusive rocks. It is cut by an
andesite dike 30 feet south of the mineralization. 300 feet south of the outcrop
a lead-silver showing crops out in underlying instructive rock. This may be
related to the uranium.
RADIOACTIVE MINERALS uranium
mineralization
HOST ROCK Volcanic: rhyolitic tuff
MAIN
COMMODITIES U
REFERENCES Lowell, 1957; Ekren and
Byers, 1985
NOTES Exact location uncertain; UTMs from near area
noted by road description. Location may be questionable since: it is Quaternary
alluvium; the nearest bed a mile to the NE is Triassic limestone intruded by
Cretaceous quartz monzonite; the nearest Tertiary volcanic rocks are about 3
miles to the north.
NO. 464
NAME
Silver Bell group (57 claims)
COUNTY
Mineral
LOCATION Secs. 15, 16, 21, T4N, R32E (unsurveyed).
Projected from the west
UTMN 4228380
UTME
375540
DISTRICT Marietta
QUAD Little Huntoon
Valley 7.5' (1967)
DEVELOPMENT Several pits and
tunnels.
RADIOACTIVITY Underground: Background = 0.05 mR/hr;
High = 7.0 mR/hr. Select samples range from 0.16 to 1.23% cU3O8 (up to 1.41%
eU3O8).
GEOLOGY Uranophane(?) and possibly other radioactive
minerals occur in small pockets or stringers and veinlets in brecciated quartz
veins which also contain lead, copper, gold, and silver. The veins cut a
granodiorite intrusion of probable Jurassic age. The radioactive pockets are 1.5
to 2 feet in length, and are found mainly along the footwall of the
quartz
RADIOACTIVE MINERALS uranophane(?)
HOST ROCK
Intrusive: Jurassic(?) granodiorite
MAIN COMMODITIES Ag,
Au
OTHER COMMODITIES Cu, U, Pb
OLD MAP NO.
315
REFERENCES AEC Report 3624; Tingley, 1990; Quade and
others, 1990a,b; Mason and others, 1996; Wood, 1954, 1955; Garside, 1973; Castor
and Ferdock, 2004
NOTES MRDS: M035443
NO. 465
NAME Silver Moon
prospect (36 claims)
OTHER NAME Silver Moon
mine
COUNTY Mineral
LOCATION Sec. 16, T4N,
R32E (unsurveyed). Projected from west
UTMN
4228800
UTME 375720
DISTRICT
Marietta
QUAD Little Huntoon Valley 7.5'
(1967)
DEVELOPMENT Several small cuts and one
adit.
RADIOACTIVITY Background = 0.03 mR/hr; High = 0.7
mR/hr
GEOLOGY Radioactive material occurs in thin,
limonite-stained quartz veins in granitic rock. The veins are less than 1 inch
thick, and several inches to 2 feet long.
RADIOACTIVE MINERALS
Anomalously radioactive limonite(?)
HOST ROCK Intrusive:
granitic rocks
MAIN COMMODITIES U
OLD MAP NO.
314
REFERENCES Ross, 1961, pl. 1 and table 6.7; Tingley, 1990;
Quade and others, 1990a,b; Mason and others, 1996; Garside, 1973.
NOTES
MRDS: M035430
NO.
466
NAME Silver Star mine
OTHER NAME Patrick
claims(?)
COUNTY Mineral
LOCATION NE¼ Sec.
30(?), T6N, R30E
UTMN 4246460
UTME
353800
QUAD Powell Mountain 7.5' (1989)
DEVELOPMENT
One 97-foot-long drift (for gold).
RADIOACTIVITY
Background = 0.009 mR/hr; High = 0.70 mR/hr. A n analysis of 0.08 cU3O8 was
reported from one sample.
GEOLOGY Anomalous radioactivity is
associated with silver, gold, and copper mineralization along a 4- to
12-inch-thick vein in granite. Galena, malachite, chalcanthite, chrysocolla, and
azurite are reported.
RADIOACTIVE MINERALS Anomalously
radioactive azurite, chalcanthite, chrysocolla, galena, and malachite
HOST
ROCK Intrusive: granite
MAIN COMMODITIES Ag,
Au
OTHER COMMODITIES Cu, U, Pb
OLD MAP NO.
306
REFERENCES AEC Report 3607; Tingley, 1990; Quade and
others, 1990a,b; Mason and others, 1996; Garside, 1973.
NOTES
MRDS: M035976; UTMs at adit on topographic map, which is noted as Patrick claims
in Tingley (1990) and Quade and others (1990a,b).
NO. 467
NAME Silver State
claim
OTHER NAME Wild Horse
COUNTY
Mineral
LOCATION 15(?),T4N, R32E (unsurveyed). Projected from
west
UTMN 4229770
UTME
375410
DISTRICT Marietta
QUAD Little Huntoon
Valley 7.5' (1967)
DEVELOPMENT One bulldozer
cut.
RADIOACTIVITY Background = 0.03 mR/hr; High = 1.20 mR/hr.
One grab sample contained 0.12% eU3O8 and a 2-foot horizontal chip sample
contained 0.073% eU3O8.
GEOLOGY Altered shear zones in a
granitic intrusion contain iron-stained quartz and radioactive minerals.
Kasolite(?) has been reported.
RADIOACTIVE MINERALS
kasolite(?)
HOST ROCK Intrusive: granitic intrusion
MAIN
COMMODITIES Au
OTHER COMMODITIES Ag, U
OLD MAP
NO. 316
REFERENCES AEC Report 3614; Tingley, 1990;
Quade and others, 1990a,b; Mason and others, 1996; Garside, 1973.
NOTES
MRDS: M035440
NO.
468
NAME Sunday Mining Co. group
OTHER NAME
Sunday prospect; Yellow Cat claim; Sunday No. 12 claim; sample locality
21
COUNTY Mineral
LOCATION NW¼ NW¼ Sec. 33,
T5N, R32E (unsurveyed). Projected from west
UTMN
4234570
UTME 374520
DISTRICT
Marietta
QUAD Rattlesnake Flat 7.5'
(1980)
DEVELOPMENT Several small pits.
RADIOACTIVITY
Background = 0.04 mR/hr; High = 1.20 mR/hr. Several 3-foot horizontal
chip samples range from 0.01 to 0.11% eU3O8. Sample from prospect pit assayed
250 ppm eU3O8 and 240 ppm U3O8.
GEOLOGY Numerous iron-stained
seams in a Tertiary andesite breccia locally contain torbernite or
metatorbernite. The andesite disconformably overlies Jurassic(?) quartz
monzonite. Zeunerite(?) and cuprosklodowskite have also been reported. The
uranium occurrence is adjacent to a major east-west fault; the uranium minerals
appear to be concentrated with iron-oxide minerals. Some of the nearby quartz
monzonite are anomalous in uranium (7-10 ppm); groundwater may have leached
uranium from the rocks and deposited it (along with iron-oxide minerals) in
fault and fracture zones.
RADIOACTIVE MINERALS
cuprosklodowskite; metatorbernite; torbernite; zeunerite(?)
HOST ROCK
Volcanic/Intrusive: Tertiary andesite breccia; Jurassic(?) quartz
monzonite
MAIN COMMODITIES U
OLD MAP NO.
311A
REFERENCES AEC Report 3597; Ross, 1961, pl. 1, table 6.7,
and p. 76; Borbas, 1977; Garside, 1973; 1979; Smith and Carlson, 1957; Castor
and Ferdock, 2004.
NOTES Exact location uncertain; UTMs from
near center of quarter-quarter section.
NO.
469
NAME Sunrise claims
COUNTY
Mineral
LOCATION Sec. 2(?), T6N, R29E; Exact location
unknown
UTMN 4252200
UTME
350400
DISTRICT Borealis
QUAD Lucky Boy 7.5'
(1989)
DEVELOPMENT Several small pits, a 10-foot shaft, and a
10-foot drift.
RADIOACTIVITY Background = 0.015 mR/hr; High =
1.7 mR/hr. Samples contain as much as 0.80% eU3O8.
GEOLOGY
Autunite and an unidentified yellow-green uranium mineral are associated with
small horses of carbonaceous shale which occur along a highly brecciated and
altered zone between coarsely crystalline granite and rhyolitic
volcanics.
RADIOACTIVE MINERALS Autunite; unidentified
yellow-green uranium mineral
HOST ROCK Sedimentary: small
horses of carbonaceous shale
MAIN COMMODITIES U
OLD MAP
NO. 325
REFERENCES AEC Report 3610; Mason and
others, 1996; Garside, 1973.
NOTES MRDS: M035978; Exact
location uncertain; UTMs from near center of Sec. 2.
NO. 470
NAME Walker
Lake
COUNTY Mineral
LOCATION T25N,
R21E
UTMN 4284720
UTME
351250
RADIOACTIVITY 130 ppb U in water.
GEOLOGY
Walker Lake has a high concentration of uranium, 130 ppb. The source of
the uranium is uncertain.
HOST ROCK Sedimentary(?): lake
water
MAIN COMMODITIES U
REFERENCES Benson and
Leach, 1979
NOTES Location taken as center of lake.
NO. 471
NAME William Johnson
claims (Nos. 1-11)
OTHER NAME Black Horse
prospect
COUNTY Mineral
LOCATION Sec. 18, T9N,
R33E
UTMN 4277550
UTME
382540
DISTRICT Fitting
QUAD Win Wan Flat 7.5'
(1979)
DEVELOPMENT Considerable bulldozer
scraping.
RADIOACTIVITY Background = 0.01 mR/hr; Hi = 0.18
mR/hr. A sample contained 0.87% eU3O8 and 1.08% cU3O8.
GEOLOGY
Anomalous radioactivity, and small amounts of autunite, meta-autunite, and
uranophane, are reported from a ferruginous zone near the contact of the
Triassic Luning Formation with granitic intrusive rocks. Uranium mineralization
is found along fractures. A small amount of marginal grade (about 40% Fe) iron
ore is present, plus the usual suite of skarn minerals.
RADIOACTIVE
MINERALS Autunite; meta-autunite; uranophane
HOST ROCK
Sedimentary: Triassic Luning Formation
MAIN COMMODITIES
Fe
OTHER COMMODITIES U
OLD MAP NO.
293
REFERENCES AEC Report 3609; Reeves, Shaw, and Kral, 1958,
p. 63 and 64; Tingley, 1990; Quade and others, 1990a,b; Mason and others, 1996;
Garside, 1973; Castor and Ferdock, 2004.
NOTES MRDS: M233159,
M035681
NO. 472
NAME
Zapot pegmatite
OTHER NAME Zapot claims (2 claims); Sun 5
claim
COUNTY Mineral
LOCATION W½ SW¼ Sec. 13,
T9N, R31E
UTMN 4277520
UTME
371100
DISTRICT Fitting
QUAD Kinkaid NW 7.5'
(1979)
OTHER PRODUCTION 1980s-1990s:
gemstones
DEVELOPMENT Several pits.
GEOLOGY
Nine-zone pegmatite intruding Cretaceous monzonite and quartz monzonite. Thorite
occurs as a rare accessory associated with ilmenite, magnetite, and zircon in
the contact between the Amazonite-topaz zone and the perthite zone. An unknown
yellow U-Bi-Nb-Ca-Ti silicate mineral forming an alteration product from
plumbopyrochlore-plumbobetafite masses and uranium- and thorium-bearing zircons
are also reported.
RADIOACTIVE MINERALS plumbobetafite;
plumbopyrochlore; thorite; unknown yellow U-Bi-Nb-Ca-Ti silicate; uranium- and
thorium-bearing zircon
HOST ROCK Intrusive: Cretacerous
monzonite and quartz monzonite
MAIN COMMODITIES Amazonite,
topaz, smoky quartz
OTHER COMMODITIES Th,
U
REFERENCES Castor and Ferdock, 2004; Foord and others,
1999
NOTES
NO.
473
NAME 29 Pines mine
OTHER NAME
29-Mine
COUNTY Nye
LOCATION Sec. 8, T6N,
R46E
UTMN 4248230
UTME
512640
DISTRICT Longstreet
QUAD Big Ten Peak
East 7.5' (1971)
DEVELOPMENT Series of long bulldozer
cuts
GEOLOGY The mountain top consists of densely welded
rhyolite flows often cut by small veins and veinlets that lead to local areas of
brecciation. The matrix of the breccia is filled with a gray to black
fine-grained silica and unidentified sulfides that are reported to carry
gold-silver values. There are no visible minerals. Alteration within and along
the most broken areas was bleached white argillization.
HOST ROCK
Volcanic: rhyolite flows
MAIN COMMODITIES Ag,
Au
OTHER COMMODITIES U(?)
REFERENCES
Kleinhampl and Ziony, 1985; Mason and others, 1996; Tingley and Quade, 1986;
Quade, 1986.
NOTES MRDS: M231674
NO. 474
NAME 66
claim
OTHER NAME 66 claims
COUNTY
Nye
LOCATION Sec. 13(?), T13N, R36E (unsurveyed). Projected
from the east
UTMN 4316120
UTME
423730
DISTRICT Lodi
QUAD Downeyville 7.5'
(1988)
DEVELOPMENT A 50-foot adit and a 15-foot
winze.
RADIOACTIVITY Background = 0.15 mR/hr; High = 0.5
mR/hr
GEOLOGY Pitchblende(?) and an unidentified yellow uranium
mineral occur in an argillized and sericitized shear zone in granodiorite.
Pyrite and galena are also reported. The zone strikes N20ºE, dips 63ºE, and is
0.5 to 1 foot wide.
RADIOACTIVE MINERALS pitchblende(?);
unidentified yellow uranium mineral
HOST ROCK Intrusive:
granodiorite
MAIN COMMODITIES Pb, U
OLD MAP NO.
336
REFERENCES AEC Report 3702; Taylor, 1953b, p. 219;
Tingley and Quade, 1986; Mason and others, 1996; Garside, 1973: Castor and
Ferdock, 2004.
NOTES MRDS: M231653
NO. 475
NAME Ace
adit
OTHER NAME 4 Aces claims.
COUNTY
Nye
LOCATION NW¼ Sec. 27, T10N, R44E
UTMN
4282420
UTME 427440
DISTRICT Round
Mountain
QUAD Round Mountain 7.5' (1971)
DEVELOPMENT
Approximately 300 feet of horizontal workings for
tungsten.
RADIOACTIVITY A select sample contained 0.08% eU3O8.
16 samples assayed between 35 ppm and 220 ppm U.
GEOLOGY
Autunite occurs along fracture planes and disseminated in quartz monzonite.
Radioactivity has also been noted in nearby rhyolite dikes and in shear zones in
Tertiary volcanic rocks.
RADIOACTIVE MINERALS
Autunite
HOST ROCK Intrusive: quartz monzonite
MAIN
COMMODITIES U, W
OLD MAP NO.
344A
REFERENCES AEC Reports 3660, 3685; King and Roberts,
1954a; Gibbs, 1976; Tingley and Quade, 1986; Mason and others, 1996; Garside,
1973; 1979; Hurley and Parker, 1982, no. 14.
NOTES MRDS:
M231744; Joker and Ace mines combined in literature.
NO. 476
NAME Air Anomaly No.
4
OTHER NAME Hard Scrabble; Hardscrabble.
COUNTY
Nye
LOCATION Secs. 26, T12N, R45E
(protracted)
UTMN 4300856
UTME
510500
QUAD Mount Jefferson 7.5' (1971)
DEVELOPMENT
Blasting of mineralized vertical exposure; bulldozer
cuts.
RADIOACTIVITY Background unknown; High = 3.0 mR/hr.
Samples range from 0.04 to 0.13% eU3O8 (0.05 to 0.18% cU3O8). Hurley and Parker
(1982) reported an analysis of 5,130 ppm U3O8.
GEOLOGY Autunite
and radioactive fluorescent opal occur along a vertical breccia zone in Tertiary
ash-flow tuff (intracaldera tuff of the Moores Creek caldera). The breccia zone
trends northeast, and may be along or near the northeast margin of the
caldera.
RADIOACTIVE MINERALS Anomalously radioactive opal;
autunite
HOST ROCK Volcanic: Tertiary ash-flow tuffs
MAIN
COMMODITIES U
OLD MAP NO. 339
REFERENCES
AEC Report 3654; Meeham, Sharp, and Mallory, 1956; Garside, 1973; Hurley
and Parker, 1982, no. 18.
NOTES Location from Hurley and others
(1982).
NO. 477
NAME
Barcelona prospect
OTHER NAME Drill Hole 4; Kerr McGee
Industries
COUNTY Nye
LOCATION NE¼ Sec. 6,
T9N, R45E
UTMN 4278060
UTME
510918
DISTRICT Barcelona
QUAD Jefferson 7.5'
(1971)
DEVELOPMENT 4 drill holes
RADIOACTIVITY
Drill Hole B-4 (TD = 420') assayed 0.005% U3O8 at intervals 160'-170' and
190'-200'
GEOLOGY Banded, recrystallized, carbonaceous black
limestone with 1 to 5% pyrite and pyrrhotite occurring as disseminated grains
and thin streaks along the bedding. Strong IP response was present.
HOST
ROCK Sedimentary: black limestone
MAIN COMMODITIES
Ag, Au, Mo, U
REFERENCES Kerr McGee Industries,
1966a,b
NOTES
NO.
478
NAME Barrel Spring occurrence
COUNTY
Nye
LOCATION Center Sec. 36, T8N, R43E
UTMN
4262109
UTME 490990
DISTRICT
Manhattan
QUAD Manhattan 7.5' (1971)
DEVELOPMENT
Prospect pits and shaft (for copper?)
RADIOACTIVITY
Radioactivity up to 100 times background; one sample contained 13,000 ppm
U3O8.
GEOLOGY Anomalous radioactivity is associated with a
pegmatite sill that cuts quartzite of the Cambrian Gold Hill Formation. Oxide
copper minerals are associated with quartz veins in the vicinity.
HOST
ROCK Sedimentary: Paleozoic quartzite
MAIN COMMODITIES
U
OTHER COMMODITIES Cu
REFERENCES
Hurley and Parker, 1982, no. 7.
NOTES
NO. 479
NAME Bey group (27
claims)
COUNTY Nye
LOCATION Sec. 21, T10N,
R44E; 1.5 miles east of Round Mountain, 0.1 mile north of the
road.
UTMN 4284358
UTME
496546
DISTRICT Round Mountain
QUAD Round
Mountain 7.5' (1971)
DEVELOPMENT Bulldozer cuts and an
8-foot-deep pit.
RADIOACTIVITY Background = 0.025 mR/hr; High =
0.20 mR/hr. A select sample contained 0.03% eU3O8; another contained 122 ppm
U3O8.
GEOLOGY Autunite occurs along fracture planes in a
granitic intrusive.
RADIOACTIVE MINERALS Autunite
HOST
ROCK Intrusive: granitic intrusion
MAIN COMMODITIES
U
OLD MAP NO. 342
REFERENCES AEC Report 3663;
Tingley and Quade, 1986; Mason and others, 1996; Garside, 1973.
NOTES
MRDS: M231732; location from Hurley and Parker (1982).
NO. 480
NAME Black Bart
Extension claim
OTHER NAME Black Bonanza claims (nos.
1-27)
COUNTY Nye
LOCATION Sec. 26, T11S,
R46E
UTMN 4089230
UTME
518580
DISTRICT Bullfrog
QUAD Beatty 7.5'
(1987)
U PRODUCTION 1956: An experimental shipment of 50 tons
of ore was reported from the Black Bonanza claims.
DEVELOPMENT
One prospect pit, and an 85-foot adit.
RADIOACTIVITY Background
= 0.025 mR/hr; High = 1.0 mR/hr. A grab sample contained 0.024% cU3O8. Similar
radioactivity and uranium analyses reported by Berridge
(1982).
GEOLOGY Radioactivity is associated with silicified
fault breccias along north-trending faults in a Tertiary rhyolite(?). Uranophane
and autunite have been reported.
RADIOACTIVE MINERALS Autunite;
uranophane
HOST ROCK Volcanic: Tertiary rhyolite(?)
MAIN
COMMODITIES U
OLD MAP NO. 358
REFERENCES
AEC Reports 3650, 3667, 3676; Smith and Tingley, 1983; Smith and others,
1983; Mason and others, 1996; Garside, 1973; Tarne, 1958; Castor and Ferdock,
2004
NOTES MRDS: M231911
NO.
481
NAME Bobby-Jack, Jeep, and Lincoln
groups
OTHER NAME Roan group; La Salle claims; Uranium claims;
Localities U-26, 27, 28, 31, 36.
COUNTY Nye
LOCATION
N½ Sec. 6, R3N, R42E, and W½ Sec. 31, T4N, R42E
UTMN
4222500
UTME 473200
QUAD Crescent Dunes 7.5'
(1987)
DEVELOPMENT Numerous trenches and bulldozer
cuts.
RADIOACTIVITY Background = 0.010 to 0.012 mR/hr; Maximum
= 0.13 mR/hr. One sample contains 0.13% cU3O8.
GEOLOGY At least
five anomalous radioactive areas a few tens to a few hundreds of square feet in
area are present in Mio-Pliocene tuffaceous lakebeds of the Siebert Tuff(?).
These areas are aligned along a 1-mile north-south trend which is probably a
fault. Anomalies are usually to the east of this fault or within it (in the
footwall side). However, at individual prospects, radioactivity is apparently
associated with irregular areas in certain tuffaceous sandstones and shales.
Iron-oxide staining was noted in some areas. Samples of calcareous tuff
reportedly from one locality contained minor amounts of autunite occurring as
small, disseminated flakes. No uranium minerals were observed in
1969.
RADIOACTIVE MINERALS Autunite
HOST ROCK
Sedimentary: Mio-Pliocene tuffaceous lakebeds
MAIN COMMODITIES
U
OLD MAP NO. 352
REFERENCES AEC Reports 3666,
3668; Finch, 1967; Davis and Hetland, 1956, p. 352; Mason and others, 1996;
Garside, 1973; Hurley and Parker, 1982, no. 5.
NOTES MRDS:
M231762; UTMs from MRDS.
NO.
482
NAME Brunton Pass
COUNTY
Nye
LOCATION Sec. 20, T12N, R38E
UTMN
4304100
UTME 436100
QUAD Ione NW 7.5'
(1988)
DEVELOPMENT Adits and open cuts for mercury; no workings
at radioactive locality.
RADIOACTIVITY Radioactivity up to 10
times background; a sample contained 9 ppm U3O8.
GEOLOGY
Anomalous radioactivity is found in sheared argillite of the Triassic Luning
Formation.
HOST ROCK Sedimentary: argillite
MAIN
COMMODITIES Hg
REFERENCES Hurley and Parker, 1982,
no. 1.
NOTES UTMs near MER284 sample site.
NO. 483
NAME Bunker-Stone No. 1
claim
COUNTY Nye
LOCATION SE¼ Sec. 13, T17S,
R53E
UTMN 4036500
UTME
593000
DISTRICT Johnnie
QUAD Mount Stirling
7.5' (1984)
DEVELOPMENT Old prospect pits on copper
shows.
RADIOACTIVITY Radioactivity: Background = 0.02 mR/hr;
High = 2.0 mR/hr
GEOLOGY Abnormal radioactivity occurs at one
location, in a 1 square foot area near intersecting fractures in the Cambrian
Sterling Quartzite. Copper and iron oxides are present, as well as visible
yellow uranium minerals.
RADIOACTIVE MINERALS yellow uranium
minerals
HOST ROCK Sedimentary: Cambrian Sterling
Quartzite
MAIN COMMODITIES Cu, U
OLD MAP NO.
373
REFERENCES AEC Report 3651; Mason and others, 1996;
Garside, 1973.
NOTES MRDS: M242119; Exact location uncertain;
UTMs from near center of quarter section.
NO.
484
NAME Butler prospect
OTHER NAME
Blue Bird prospect(?) (fluorite claim)
COUNTY
Nye
LOCATION Center N½ Sec. 22, T12S, R47E
UTMN
4081600
UTME 526200
DISTRICT
Fluorine
QUAD Beatty Mountain 7.5' (1987)
DEVELOPMENT
A 200 inclined shaft about 100 feet long (for
fluorite).
RADIOACTIVITY Background = 0.06 mR/hr; High = 0.25
mR/hr
GEOLOGY Anomalous radioactivity occurs with fluorite in a
Cambrian limestone. The limestone has been cut by fractures which trend N70°W
and dip 80°SW. Silicification and iron staining are also
present.
RADIOACTIVE MINERALS Anomalously radioactive
fluorite
HOST ROCK Sedimentary: Cambrian limestone
MAIN
COMMODITIES F, U
OLD MAP NO.
362
REFERENCES AEC Report 3711; Mason and others, 1996;
Garside, 1973.
NOTES MRDS: M231935; Exact location uncertain;
UTMs from near center of half section.
NO.
485
NAME Daisy fluorspar mine
OTHER NAME
Beatty fluorspar mine; Crowell mine
COUNTY
Nye
LOCATION Sec. 23, T12S, R47E
UTMN
4081730
UTME 527360
DISTRICT
Fluorine
QUAD Beatty Mountain 7.5' (1987)
OTHER
PRODUCTION 1919-1922, 1928-1939, 1940-1976: 204,508 tons pf
fluorspar
DEVELOPMENT Extensive underground developments by
shafts, crosscuts and drifts to a depth of over 400 feet (for
fluorite).
RADIOACTIVITY (Underground): Background = 0.015
mR/hr; High = 0.07 mR/hr. Purple fluorite samples contain up to 0.02%
eU3O8.
GEOLOGY Slightly anomalous radioactivity occurs with
purple earthy fluorite in a series of, pipes, irregular bodies, and veins with I
pipe-like shoots, in a zone of chaotic structure associated with a large thrust
fault. The pipes are localized in crackled zones in dolomite of the Cambrian
Nopah Formation. Some tabular bodies are as much as 350 feet long and 250 feet
high. Fine crystals of cinnabar in calcite vugs are locally abundant. Ore
solutions are believed to have been derived from a nearby chamber of Tertiary
rhyolite magma that also erupted a considerable volume of flows, ash flows, and
tuffs.
RADIOACTIVE MINERALS Anomalously radioactive
fluorite
HOST ROCK Sedimentary: Cambrian Nopah
Formation
MAIN COMMODITIES F
OTHER COMMODITIES
Hg, U
NBMG SAMPLE 1028, 1029
OLD MAP NO.
361
REFERENCES AEC Reports 3671, 3681, 3703, 3704; Chesterman
and Main, 1954; Taylor, 1953b, p. 220; Thurston, 1949; Horton, 1961; Cornwall,
1972; Smith and Tingley, 1983; Smith and others, 1983; Mason and others, 1996;
Papke, 1979; Garside, 1973.
NOTES MRDS: M241867
NO. 486
NAME Dottie Lee
claim
OTHER NAME Dotty Lee mines; Dotty Lee property; Bonita
Canyon prospect.
COUNTY Nye
LOCATION Sec. 24,
T14N, R39E (protracted). At the prospect symbols at the end of the Bonita Canyon
road.
UTMN 4323700
UTME
452930
DISTRICT Jackson
QUAD South Shoshone
Peak 7.5' (1988)
DEVELOPMENT A 45-foot trench, several
bulldozer cuts, and a 55-foot adit.
RADIOACTIVITY Background =
0.017 mR/hr; High = 0.25 mR/hr. Select samples reportedly contain up to 0.08%
cU3O8. Later analyses are up to 420 ppm U3O8.
GEOLOGY Anomalous
radioactivity is associated with purple fluorite in a crystal-poor, lithic,
iron-stained ash-flow tuff of the Bonita Canyon Formation. The fluorite occurs
in stringers, veins, and pods up to 3 inches wide in the hanging wall of a fault
that strikes N75ºW and dips 85ºS. Fluorite comprises up to 3% of the rock near
the fault. Cinnabar is present with the fluorite in some specimens, but is rare
in the wall rock. One sample contained 0.035% mercury. A nearby mercury
(cinnabar) prospect occurs in the same ash-flow tuff, but no fluorite was noted.
The purple coloration in the fluorite is apparently due to radiation damage, and
disappears upon heating to 350ºC.
RADIOACTIVE MINERALS
Anomalously radioactive fluorite
HOST ROCK Volcanic: Bonita
Canyon Formation
MAIN COMMODITIES F, Hg, U
NBMG
SAMPLE 411
OLD MAP NO. 331
REFERENCES
AEC Report 3678; Bonham, 1970; Kleinhampl and Ziony, 1984; Tingley and
Smith, 1983a, b; Mason and others, 1996; Garside, 1973; Castor and others, 2004;
Mitchell and Quade, 1982, no. 21.
NOTES MRDS: M231606
NO. 487
NAME First Strike
prospect
COUNTY Nye
LOCATION Sec. 33, T6N, R,
57E (unsurveyed). Projected from the west, old workings 2,000 feet south of Troy
site.
UTMN 4244470
UTME
624500
DISTRICT Troy
QUAD Troy Canyon 7.5'
(1990)
DEVELOPMENT Numerous caved workings for silver and
gold.
RADIOACTIVITY Background = 0.035 mR/hr; High = 2.5 mR/hr
(underground). One-foot and 2-foot chip samples contained 0.062 and 0.288%
eU3O8, Gold and silver values were also reported.
GEOLOGY
Anomalous radioactivity is reported from an inclined shaft which explores a
fault zone separating quartzite from altered quartz monzonite. Iron and
manganese oxides, quartz, and gypsum are present.
HOST ROCK
Sedimentary/Intrusive: quartzite; quartz monzonite
MAIN COMMODITIES
U
NBMG SAMPLE 3013
OLD MAP NO.
351
REFERENCES AEC Report 3649; Tingley and Quade, 1986; Mason
and others, 1996; Garside, 1973.
NOTES MRDS: M231785
NO. 488
NAME Foster
group
OTHER NAME Localities U-24, U-29, U-30; Atlas
group.
COUNTY Nye
LOCATION W½ Sec. 36, T4N,
R41E
UTMN 4223650
UTME 471250
QUAD
Crescent Dunes 7.5' (1987)
DEVELOPMENT Several shallow
pits, extensive bulldozer scraping, and several shallow drill
holes.
RADIOACTIVITY Background = 0.015 to 0.025 mR/hr; High =
0.17 to 0.21 mR/hr. Surface samples reportedly contain 0.021 and 0.028% eU3O8.
Other analyses up to 1820 ppm U3O8.
GEOLOGY Three radioactive
anomalies (U-24, 29, and 30) lie in or just to the west of a near vertical fault
that strikes N15°E in Mio-Pliocene lacustrine sedimentary rocks (Siebert Tuff?).
This fault separates sandstones on the east from shales on the west. On the
Atlas group (U-24) the radioactivity is localized in the foot wall of the fault,
for a distance of 300 to 400 feet. Radioactivity at the other two anomalies is
localized by minor east-west or northwest faults. Most radioactive areas are in
fine-grained paper shales and siltstones, but at U-29 a few occur in sandstone
units.
HOST ROCK Sedimentary: Mio-Pliocene lacustrine
sedimentary rocks
MAIN COMMODITIES U
OLD MAP NO.
353
REFERENCES AEC Report 3669; Mason and others, 1996;
Garside, 1973; Hurley and Parker, 1982, no. 4.
NOTES MRDS:
M231765; UTMs from MRDS.
NO.
489
NAME Good Enough inclined shaft
COUNTY
Nye
LOCATION NE¼ NE¼ Sec. 27, T10N, R44E
UTMN
4283710
UTME 498200
DISTRICT Round
Mountain
QUAD Round Mountain 7.5' (1971)
DEVELOPMENT
A 35-foot inclined shaft.
RADIOACTIVITY Inside adit,
readings between 300 cps and 7,000 cps near bottom, and 4 select samples assayed
between 110 ppm and 6,100 ppm U.
GEOLOGY Autunite and anomalous
radioactivity occur in a shallow inclined shaft in quartz monzonite. Iron- and
copper-oxide minerals, pyrite, chalcopyrite, and narrow (1-2 inch) quartz
veinlets are also reported.
RADIOACTIVE MINERALS
Autunite
HOST ROCK Intrusive: quartz monzonite
MAIN
COMMODITIES Cu, U
OLD MAP NO.
344B
REFERENCES Gibbs, 1976; Garside, 1979.
NOTES
NO. 490
NAME
Green Top claim
COUNTY Nye
LOCATION NW¼ sec 6,
T9N, R44E; About 1 mile southwest of the Henebergh Tunnel.
UTMN
4280060
UTME 492220
DISTRICT Round
Mountain
QUAD Round Mountain 7.5' (1971)
DEVELOPMENT
One shallow shaft.
RADIOACTIVITY A grab sample contained
0.014% U3O8, 87 ounces per ton silver, and 0.66 copper.
GEOLOGY
Anomalous radioactivity is associated with a 1- to 2-foot-wide quartz which
strikes N50ºE and dips 50ºSE. Copper oxides and silver mineralization are
present. The wall rock is granite.
RADIOACTIVE MINERALS
Anomalously radioactive copper and silver minerals(?)
HOST ROCK
Intrusive: granite
MAIN COMMODITIES Ag, Cu, U
NBMG
SAMPLE 2054
OLD MAP NO. 348
REFERENCES
King and Roberts, 1954a; Tingley and Quade, 1986; Mason and others, 1996;
Garside, 1973.
NOTES MRDS: M030122
NO. 491
NAME Hall
property
OTHER NAME Hall mine
COUNTY
Nye
LOCATION Secs. 5, 6, T5N, R42E
UTMN
4242400
UTME 474200
DISTRICT San Antone
(Liberty)
QUAD Liberty Springs 7.5' (1987)
OTHER
PRODUCTION 1981-1985: open pit production
DEVELOPMENT
open pit; workings now total over 4,400 feet
GEOLOGY
Torbnerite occurs as green, tabular, single crystals and groups in gouge.
Metatorbnerite occurs as pale green, translucent crystals with torbnerite. 1973:
5-10,000,000 tons of material grading 0.25 to 0.35% MoS2. Molybdenum occurs as
molybdenite and ferrimolybdite. A low grade copper sulfide (chalcocite) zone is
also present. The ore minerals are generally disseminated in a massively
developed irregular zone of quartz veins in the marginal zone of quartz
monzonite stock intruding quartz mica schist, sericitic quartzite, and limestone
probably of the Pablo Formation. Mineralization is probably related to the last
stages of emplacement of the stock.
RADIOACTIVE MINERALS
metatorbnerite; torbnerite
HOST ROCK Intrusive/Sedimentary:
quartz monzonite stock; Pablo Formation
MAIN COMMODITIES Ag,
Au, Cu, Mn, Mo, Pb
OTHER COMMODITIES U
REFERENCES
Castor and Ferdock, 2004; Mason and others, 1996; Kleinhampl and Ziony,
1984
NOTES M232649
NO.
492
NAME Hazel E prospect
OTHER NAME
Hazele
COUNTY Nye
LOCATION Center Sec. 3,
T13N, R39E (unsurveyed). Located at approximately 8,100 feet elevation on a
ridge northeast of the north fork of ldlewild Creek.
UTMN
4319000
UTME 449600
QUAD South Shoshone Peak
7.5' (1988)
DEVELOPMENT Two small bulldozer cuts and more than
half a mile of bulldozer road.
RADIOACTIVITY Background = 0.025
mR/hr; High = 0.1 mR/hr
GEOLOGY Radioactivity occurs across a
10-foot zone in a bleached rhyolitic welded tuff (The Bonita Canyon Formation)
along a gouge and breccia zone associated with a fault that strikes N55ºW, and
dips 60ºSW. A slight amount of iron-oxide staining is present. Bleaching and
slight radioactivity (1.5 times background) extend along the fault for 100
feet.
HOST ROCK Volcanic: Bonita Canyon Formation
MAIN
COMMODITIES U
NBMG SAMPLE 405
OLD MAP NO.
332
REFERENCES AEC Report 3652; Bonham, 1970; Kleinhampl
and Ziony, 1984; Tingley and Smith, 1983a, b; Mason and others, 1996; Garside,
1973.
NOTES MRDS: M231609
NO.
493
NAME Hazel No. 6 claim
OTHER NAME
Hazel; Hazle group; Jane group; Valley View group
COUNTY
Nye
LOCATION SE¼ SE¼ sec 22, T13N, R45E
(protracted)
UTMN 4310718
UTME
510086
DISTRICT Northumberland
QUAD Jet Spring
7.5' 1980
DEVELOPMENT Discovery and location
pits.
RADIOACTIVITY Background = 150 cps; High = 2,200 cps. A
chip sample contained 0.09% eU3O8 and a select(?) sample reportedly contained
0.12% eU3O8. Another sample contained 424 ppm U3O8.
GEOLOGY
Minor amounts of torbernite and autunite occur along a fracture zone in steeply
dipping, metamorphosed gray shales (Silurian?).
RADIOACTIVE MINERALS
Autunite; torbernite
HOST ROCK Sedimentary: Silurian(?)
shale
MAIN COMMODITIES U
NBMG SAMPLE
609
OLD MAP NO. 338
REFERENCES U.S. Atomic
Prelim. Reconn. Report 3641; Tingley and Quade, 1986; Mason and others, 1996;
Garside, 1973; Castor and Ferdock, 2004; Hurley and Parker, 1982, no.
20.
NOTES MRDS: M231717; Location is for the Jane prospect of
Hurley and Parker (1982).
NO.
494
NAME Henebergh Tunnel
OTHER NAME Heneberg
Tunnel; Rainbow No. 1 claim; Rainbow claims (nos. 1-7); Round Mountain area;
Heneberg Tunnel; Hendenberg Tunnel
COUNTY
Nye
LOCATION Center NW¼ Sec. 28, T10N, R44E
(protracted)
UTMN 4283311
UTME
495555
DISTRICT Round Mountain
QUAD Round
Mountain 7.5' (1971)
DEVELOPMENT Six open cuts, a 320-foot
adit, a 40-foot raise, and a 200-foot winze.
RADIOACTIVITY
Underground: Background = 0.02 mR/hr; High = 1.5 mR/hr. Select samples here
reportedly assayed up to 0.16% U308, but chip and grab samples do not contain
more than 0.05% U3O8.
GEOLOGY Autunite occurs in an altered
aplite dike that can be traced for approximately 2,000 feet along a N55ºE fault
zone in Cretaceous granite (73 to 107 million years). The dike is 5 to 6 feet
wide and dips vertically or steeply southeast. The aplite is almost completely
altered to clay minerals, and contains iron oxides and autunite crystals up to 2
mm long and earthy coatings along fracture surfaces.
RADIOACTIVE
MINERALS Autunite
HOST ROCK Intrusive: aplite
dike
MAIN COMMODITIES U
OLD MAP NO.
347A
REFERENCES AEC Reports 3655, 3710; Davis, 1954; King and
Roberts, 1954a; Mining Journal, 1946; Kral, 1951, p. 154; Mining and Industry
News, 1948a; Engineering and Mining Journal, 1946, 1950c; Gibbs, 1976; Tingley
and Quade, 1986; Mason and others, 1996; Garside, 1973; 1979; King and others,
1951; Castor and Ferdock, 2004; Gibbs, 1976; Hurley and Parker, 1982, no.
11.
NOTES MRDS: W016431
NO.
495
NAME Hoodoo Canyon prospect 1
COUNTY
Nye
LOCATION Sec. 34, T14N, R45E (protracted); along
Hoodoo Canyon
UTMN 4319700
UTME
508100
DISTRICT Northumberland
QUAD Wildcat
Canyon 7.5' (1989)
DEVELOPMENT Diamond drill holes by Noranda
(1980)
GEOLOGY Anomalous radioactivity is reported from
accidental rock fragments contained in a 3-m-thick, poorly welded, felsic
ash-flow tuff. This tuff is within a predominantly sedimentary sequence of
moat-fill rocks of the Northumberland caldera (McKee, 1974). The source of the
mineralized fragments is not known; however, they appear to be strongly
silicified volcaniclastic or tuffaceous sedimentary rocks. The rock fragments
are dark colored and contain disseminated pyrite; any uranium minerals present
have not been identified.
HOST ROCK Volcanic: felsic ash-flow
tuff
MAIN COMMODITIES U
REFERENCES H.F.
Bonham, oral commun., 1980; McKee, 1974
NOTES UTMs at center of
protracted section.
NO. 496
NAME
Hoodoo Canyon prospect 2
COUNTY Nye
LOCATION
Center of boundary between Secs. 28 and 29, T14N, R45E
(protracted)
UTMN 4321300
UTME
505700
DISTRICT Northumberland
QUAD Wildcat
Canyon 7.5' (1989)
DEVELOPMENT Diamond drill holes by Noranda
(1980)
GEOLOGY Autunite(?) is found as light-yellow to
yellow-green coatings and as small, yellow-green platy crystals in cavities and
along fractures in the Oligocene tuff of Hoodoo Canyon. The autunite(?) is
fluorescent in both short- and long-wavelength ultraviolet light. The cavities
which contain the autunite(?) are commonly the sites of former pumice lapilli,
which were destroyed during vapor-phase crystallization of the tuff. These
cavities are commonly coated with smectite(?) clay. The vitrophyre portion of
the tuff of Hoodoo Canyon (McKee, 1974, p. 36-38) is reported to be anomalous in
uranium (H.F. Bonham, oral commun., 1980).
RADIOACTIVE MINERALS
Autunite(?)
HOST ROCK Volcanic: ash-flow tuff
MAIN
COMMODITIES U
REFERENCES H.F. Bonham, oral commun.,
1980; McKee, 1974
NOTES
NO.
497
NAME Hot No. 1 mine
OTHER NAME Red
Hill; Blue Bird No.1; Granite; and Nighthawk claims
COUNTY
Nye
LOCATION Secs. 19, 20, 29, 30, T9N, R45E
UTMN
4272290
UTME 504660
DISTRICT
Belmont
QUAD Belmont West 7.5' (1971)
DEVELOPMENT
Several pits, a 155-foot-adit, and a shaft.
RADIOACTIVITY
Background = 0.015 mR/hr; High = 1.2 mR/hr. A 3.2-foot channel sample
contained 0.05% eU3O8 (0.058% cU3O8). Select samples contain up to 0.3%
eU3O8.
GEOLOGY Anomalous radioactivity, autunite, and
torbernite occur along north- and north-east-trending altered fracture zones in
a quartz monzonite intrusive. The radioactive minerals are found along fracture
planes and disseminated in the altered wallrock.
RADIOACTIVE MINERALS
Autunite; torbernite
HOST ROCK Intrusive: quartz
monzonite
MAIN COMMODITIES U
OTHER COMMODITIES
Be, Mo, Pb, Zn
OLD MAP NO. 349
REFERENCES AEC
Reports 3661, 3638, 3639; Kleinhampl and Ziony, 1984; Tingley and Quade, 1986;
Mason and others, 1996; Garside, 1973; Hurley and Parker, 1982, no.
9.
NOTES MRDS: M030042
NO.
498
NAME Huebernite Mill prospect
COUNTY
Nye
LOCATION SW¼ Sec. 27, T10N, R44E
UTMN
4282355
UTME 497463
DISTRICT Round
Mountain
QUAD Round Mountain 7.5' (1971)
DEVELOPMENT
Adit at site of huebnerite processing site.
RADIOACTIVITY
Maximum, 700-1200 cps; a sample contained 226 ppm U3O8.
GEOLOGY
Very minor autunite is found along clay-altered fractures in granite. The
radioactivity does not appear to be associated with tungsten
mineralization.
RADIOACTIVE MINERALS Autunite
HOST
ROCK Intrusive: granite
MAIN COMMODITIES
W
OTHER COMMODITIES U
REFERENCES Hurley and
Parker, 1982, no. 15.
NOTES
NO.
499
NAME Idle Wild claims
OTHER NAME
Idlewild
COUNTY Nye
LOCATION Center Sec. 3,
T13N, R39E (protracted)
UTMN 4319041
UTME
449694
QUAD South Shoshone Peak 7.5'
(1988)
DEVELOPMENT Location pit.
RADIOACTIVITY
Background = 0.04 mR/hr; High = 0.11 mR/hr. A 6-foot horizontal chip sample
contained 0.01% eU3O8, and a select sample contained 32 ppm
cU3O8.
GEOLOGY Abnormal radioactivity occurs at the base of an
ash-flow tuff in the Bonita Canyon Formation, a Tertiary, crystal-poor,
rhyolitic welded tuff. A 2-foot clay bed(?) was reported.
HOST ROCK
Volcanic: Bonita Canyon Formation
MAIN COMMODITIES
U
NBMG SAMPLE 404
OLD MAP NO.
330
REFERENCES AEC Report 3647; Kleinhampl and Ziony, 1984;
Tingley and Smith, 1983a, b; Mason and others, 1996; Garside, 1973; Mitchell and
Quade, 1982, no. 22.
NOTES MRDS: M231610; UTMs from Mitchell
and Quade (1982).
NO. 500
NAME
Illinois mine
OTHER NAME Marble Camp; Sand Mound shaft;
Silver Link shaft
COUNTY Nye
LOCATION Sec.
13(?), T13N, R36E (unsurveyed). Projected from the east
UTMN
4316420
UTME 423700
DISTRICT
Lodi
QUAD Downeyville 7.5' (1988)
OTHER PRODUCTION
1876-1890: 2,678 tons of mostly Ag and Pb ore valued at $253,863;
1921-1922: Au, Ag, Pb shipments
DEVELOPMENT A 1,000-foot shaft
and numerous drifts.
RADIOACTIVITY About four times background.
Samples contain 0.01% eU3O8.
GEOLOGY Very slightly anomalous
radioactivity is reported from this property. The mine is on a northwesterly
bearing vein system in limestone and shale of the Triassic Excelsior(?)
Formation near and east of a granodiorite contact. Lead and silver minerals
occur in the veins. Lamprophyre dikes of andesitic composition are often
associated with the ore zones.
HOST ROCK Sedimentary: Triassic
Excelsior(?) Formation
MAIN COMMODITIES Au, Ag, Pb
OTHER
COMMODITIES Cu, Mn, U, Zn
NBMG SAMPLE 2400
OLD
MAP NO. 334
REFERENCES AEC Report 3686; Taylor,
1953b, p. 219; Kral, 1951, p. 95, 96; Kleinhampl and Ziony, 1984; Tingley and
Quade, 1986; Mason and others, 1996; Garside, 1973; Couch and Carpenter, 1943;
Assay Report, 1922
NOTES MRDS: M231649
NO. 501
NAME Joker
shaft
OTHER NAME Joker claims.
COUNTY
Nye
LOCATION NW¼ Sec. 27, T10N, R44E
UTMN
4283270
UTME 496890
DISTRICT Round
Mountain
QUAD Round Mountain 7.5' (1971)
DEVELOPMENT
A 17-foot shaft
RADIOACTIVITY Fractures give readings
between 550 cps to 1500 cps. 5 grab samples assayed between 60 ppm to 160 ppm U.
Some 3- to 4-foot chip samples assay 0.03-0.04% eU3O8. One sample contained 653
ppm.
GEOLOGY Autunite occurs along fracture planes and
disseminated in quartz monzonite. Radioactivity has also been noted in nearby
rhyolite dikes and in shear zones in Tertiary volcanic rocks.
RADIOACTIVE
MINERALS Autunite
HOST ROCK Intrusive: quartz
monzonite
MAIN COMMODITIES U
OLD MAP NO.
344A
REFERENCES AEC Reports 3660, 3685; King and Roberts,
1954a; Gibbs, 1976; Tingley and Quade, 1986; Mason and others, 1996; Garside,
1973; 1979; Hurley and Parker, 1982, no. 13.
NOTES MRDS:
M231744; Joker and Ace mines combined in literature.
NO. 502
NAME Lee Hiatt
prospect
COUNTY Nye
LOCATION SW¼ Sec. 32, T8N,
R44E
UTMN 4261674
UTME
494090
DISTRICT Manhattan
QUAD Manhattan 7.5'
(1971)
DEVELOPMENT Bulldozer cuts and drill holes (for
copper).
RADIOACTIVITY Background = 90-100 cps; High = 250 cps.
A sample contained 167 ppm U3O8.
GEOLOGY Anomalous
radioactivity is associated with gossan in a breccia zone in Paleozoic
argillite.
HOST ROCK Sedimentary: Paleozoic
argillite
MAIN COMMODITIES U
OTHER COMMODITIES
Cu
REFERENCES Hurley and Parker, 1982, no. 8.
NOTES
NO. 503
NAME
Life Preserver group
OTHER NAME Life Preserver mine; Life
Preserver claims; Landmark-Life Preserver group
COUNTY
Nye
LOCATION Sec. 36, T7S, R46E
UTMN
4127180
UTME 519470
DISTRICT
Tolicha
QUAD Tolicha Peak 7.5' (1986)
OTHER
PRODUCTION About 1920: Two cars of $15 ore
shipped.
DEVELOPMENT Several shallow shafts, adits, and
connecting workings totaling about 1,000 feet
RADIOACTIVITY
NBMG sample 5460 assayed 4800 ppm, sample 5404 assayed 4700 ppm Th, and sample
5423 assayed 210 ppm Th. Other NBMG samples ranged from 31 to 78 ppm
Th.
GEOLOGY The area is underlain by mostly lower Miocene
flows, tuffs, and breccias. The gold-rich zone of the Life Preserver Mine is
enriched in Th.
RADIOACTIVE MINERALS thorium-bearing gold
ore
HOST ROCK Volcanic: Miocene rhyolite flows and
tuffs
MAIN COMMODITIES Ag, Au
OTHER COMMODITIES
Th
NBMG SAMPLE 1914, 1915. 1916, 5404, 5405, 5407, 5411,
5421, 5422, 5423, 5424, 5425, 5426, 5460
REFERENCES Kral, 1951;
Mason and others, 1996; Tingley and others, 1998
NOTES MRDS:
M242094
NO. 504
NAME Lime
Ridge group (Nos. 1-50)
COUNTY Nye
LOCATION
NW¼ Sec. 25, T10N, R51E; about, 0.8 mile north of Moore's
Station.
UTMN 4284000
UTME
570500
QUAD Moores Station 7.5' (1982)
DEVELOPMENT
A 30-foot shaft.
RADIOACTIVITY Background = 0.02 mR/hr;
High = 0.20 mR/hr. Samples contain up to 0.02% U3O8. Assays up to 0.13% eU3O8
(0.144% cU3O8) are reported.
GEOLOGY Autunite and iron oxides
are reported from Tertiary ash-flow tuffs and sediments, probably the Shingle
Pass Tuff.
RADIOACTIVE MINERALS Autunite
HOST ROCK
Volcanic: Tertiary Tertiary ash-flow tuffs and sediments
MAIN
COMMODITIES U
OLD MAP NO. 366
REFERENCES
AEC Report 3642; Mason and others, 1996; Garside, 1973.
NOTES
MRDS: M231706; Exact location uncertain; UTMs from near center of
quarter section.
NO. 505
NAME
Locality U-24
COUNTY Nye
LOCATION W½
Sec. 36, T4N, R41E
UTMN 4223640
UTME
471150
QUAD Crescent Dunes 7.5' (1987)
RADIOACTIVITY
See description for Foster group.
GEOLOGY See
description for Foster group.
HOST ROCK Sedimentary:
Mio-Pliocene lacustrine sedimentary rocks
MAIN COMMODITIES
U
OLD MAP NO. 353
REFERENCES AEC Report 3669;
Mason and others, 1996; Garside, 1973.
NOTES MRDS: M231765
NO. 506
NAME Locality
U-26
COUNTY Nye
LOCATION Sec. 6, R3N,
R42E
UTMN 4221770
UTME 473170
QUAD
Crescent Dunes 7.5' (1987)
RADIOACTIVITY See description
for Bobby Jack group.
GEOLOGY See description for Bobby Jack
group.
RADIOACTIVE MINERALS Autunite
HOST ROCK
Sedimentary: Mio-Pliocene tuffaceous lakebeds
MAIN COMMODITIES
U
OLD MAP NO. 352
REFERENCES AEC Reports 3666,
3668; Finch, 1967; Davis and Hetland, 1956, p. 352; Mason and others, 1996;
Garside, 1973.
NOTES MRDS: M231762
NO. 507
NAME Locality
U-27
COUNTY Nye
LOCATION Sec. 6, R3N,
R42E
UTMN 4222200
UTME 473100
QUAD
Crescent Dunes 7.5' (1987)
RADIOACTIVITY See description
for Bobby Jack group.
GEOLOGY See description for Bobby Jack
group.
RADIOACTIVE MINERALS Autunite
HOST ROCK
Sedimentary: Mio-Pliocene tuffaceous lakebeds
MAIN COMMODITIES
U
OLD MAP NO. 352
REFERENCES AEC Reports 3666,
3668; Finch, 1967; Davis and Hetland, 1956, p. 352; Mason and others, 1996;
Garside, 1973.
NOTES MRDS: M231762
NO. 508
NAME Locality
U-28
COUNTY Nye
LOCATION Sec. 6, R3N,
R42E
UTMN 4222440
UTME 473040
QUAD
Crescent Dunes 7.5' (1987)
RADIOACTIVITY See description
for Bobby Jack group.
GEOLOGY See description for Bobby Jack
group.
RADIOACTIVE MINERALS Autunite
HOST ROCK
Sedimentary: Mio-Pliocene tuffaceous lakebeds
MAIN COMMODITIES
U
OLD MAP NO. 352
REFERENCES AEC Reports 3666,
3668; Finch, 1967; Davis and Hetland, 1956, p. 352; Mason and others, 1996;
Garside, 1973.
NOTES MRDS: M231762
NO. 509
NAME Locality
U-29
COUNTY Nye
LOCATION W½ Sec. 36, T4N,
R41E
UTMN 4223570
UTME 471100
QUAD
Crescent Dunes 7.5' (1987)
RADIOACTIVITY See description
for Foster group.
GEOLOGY See description for Foster
group.
HOST ROCK Sedimentary: Mio-Pliocene lacustrine
sedimentary rocks
MAIN COMMODITIES U
OLD MAP NO.
353
REFERENCES AEC Report 3669; Mason and others, 1996;
Garside, 1973.
NOTES MRDS: M231765
NO. 510
NAME Locality
U-30
COUNTY Nye
LOCATION W½ Sec. 36, T4N,
R41E
UTMN 4222980
UTME 471040
QUAD
Crescent Dunes 7.5' (1987)
RADIOACTIVITY See description
for Foster group.
GEOLOGY See description for Foster
group.
HOST ROCK Sedimentary: Mio-Pliocene lacustrine
sedimentary rocks
MAIN COMMODITIES U
OLD MAP NO.
353
REFERENCES AEC Report 3669; Mason and others, 1996;
Garside, 1973.
NOTES MRDS: M231765
NO. 511
NAME Locality
U-31
COUNTY Nye
LOCATION Sec. 31, R4N,
R42E
UTMN 4222980
UTME 472990
QUAD
Crescent Dunes 7.5' (1987)
RADIOACTIVITY See description
for Bobby Jack group.
GEOLOGY See description for Bobby Jack
group.
RADIOACTIVE MINERALS Autunite
HOST ROCK
Sedimentary: Mio-Pliocene tuffaceous lakebeds
MAIN COMMODITIES
U
OLD MAP NO. 352
REFERENCES AEC Reports 3666,
3668; Finch, 1967; Davis and Hetland, 1956, p. 352; Mason and others, 1996;
Garside, 1973.
NOTES MRDS: M231762
NO. 512
NAME Locality
U-32
OTHER NAME Localities U-32, 33, 34, 35
COUNTY
Nye
LOCATION SE¼ Sec. 25, T4N, R41E
UTMN
4224170
UTME 472040
QUAD Crescent Dunes
7.5' (1987)
DEVELOPMENT Several bulldozer
trenches.
RADIOACTIVITY Background = 0.02 mR/hr; High 0.09 to
0.17 mR/hr
GEOLOGY Four radioactive localities occur in a
north-south line about half a mile long. No single structure was noted
connecting these prospects. Two occurrences (U-32, U-33) are in light colored
shales and siltstones. Sandstone beds present are not radioactive. The other two
localities are in buff sandstone, and in one case the radioactivity is
associated with calcareously cemented concretions. All four prospects may be in
the same stratigraphic interval in lacustrine and fluviatile Mio-Pliocene
sedimentary rocks (Siebert Tuff?).
HOST ROCK Sedimentary: light
colored shales and siltstones
MAIN COMMODITIES U
OLD MAP
NO. 354
REFERENCES Mason and others, 1996; Garside,
1973.
NOTES MRDS: M233635
NO.
513
NAME Locality U-33
COUNTY
Nye
LOCATION SE¼ Sec. 25, T4N, R41E
UTMN
4224460
UTME 472010
QUAD Crescent Dunes 7.5'
(1987)
RADIOACTIVITY See description for Locality
U-32
GEOLOGY See description for Locality U-32
HOST
ROCK Sedimentary: light colored shales and siltstones
MAIN
COMMODITIES U
OLD MAP NO. 354
REFERENCES
Mason and others, 1996; Garside, 1973.
NOTES MRDS:
M233635
NO. 514
NAME
Locality U-34
COUNTY Nye
LOCATION SE¼ Sec. 25,
T4N, R41E
UTMN 4224620
UTME
471990
QUAD Crescent Dunes 7.5' (1987)
RADIOACTIVITY
See description for Locality U-32
GEOLOGY See
description for Locality U-32
HOST ROCK Sedimentary: light
colored shales and siltstones
MAIN COMMODITIES U
OLD MAP
NO. 354
REFERENCES Mason and others, 1996; Garside,
1973.
NOTES MRDS: M233635
NO.
515
NAME Locality U-36
COUNTY
Nye
LOCATION Sec. 31, R4N, R42E
UTMN
4223630
UTME 473050
QUAD Crescent Dunes 7.5'
(1987)
RADIOACTIVITY See description for Bobby Jack
group.
GEOLOGY See description for Bobby Jack
group.
RADIOACTIVE MINERALS Autunite
HOST ROCK
Sedimentary: Mio-Pliocene tuffaceous lakebeds
MAIN COMMODITIES
U
OLD MAP NO. 352
REFERENCES AEC Reports 3666,
3668; Finch, 1967; Davis and Hetland, 1956, p. 352; Mason and others, 1996;
Garside, 1973.
NOTES MRDS: M231762
NO. 516
NAME Locality
U-37
COUNTY Nye
LOCATION NE¼ SE¼ Sec. 16, T3N,
R42E
UTMN 4228000
UTME
477200
DISTRICT Tonopah
QUAD Crescent Dunes
7.5' (1987)
DEVELOPMENT A bulldozer
cut.
RADIOACTIVITY Background = 0.035 mR/hr; High = 0.11
mR/hr
GEOLOGY A very small area of radioactivity was noted in a
tuffaceous shale bed.
HOST ROCK Sedimentary: tuffaceous
shale
MAIN COMMODITIES U
OLD MAP NO.
355
REFERENCES Mason and others, 1996; Garside,
1973.
NOTES MRDS: M233636; Exact location uncertain; UTMs from
near center of quarter-quarter section.
NO.
517
NAME Manhattan mining district
OTHER NAME
Manhattan Gulch placers(?)
COUNTY Nye
LOCATION
Center T8N, R43E
UTMN 4265500
UTME
489000
DISTRICT Manhattan
QUAD Manhattan 7.5'
(1971); Seyler Peak 7.5' (1971)
OTHER PRODUCTION 1907-1967:
208,898 oz valued at least $6,342,796 placer Au
GEOLOGY A
monazite-bearing placer reported in the district.
RADIOACTIVE MINERALS
monazite
HOST ROCK Sedimentary (placer):
alluvium
MAIN COMMODITIES Ag, Au, Monazite, U(?)
OLD MAP
NO. 368
REFERENCES Lovering, 1954; Johnson, 1978;
Kleinhampl and Ziony, 1984; Mason and others, 1996; Garside, 1973.
NOTES
MRDS: M233583; Exact location uncertain; UTMs from near center of
Manhattan Gulch placers: Secs. 19, 20, T8N, R44E and Secs. 21, 22, 23, 24, T8N,
R43E
NO. 518
NAME N and H
group (19 claims)
OTHER NAME N and H Uranium Mining
Co.
COUNTY Nye
LOCATION Center E½ E½ Sec. 27,
T10N, R44E (unsurveyed).
UTMN 4283300
UTME
499020
DISTRICT Round Mountain
QUAD Round
Mountain 7.5' (1971)
DEVELOPMENT North adit, 703 feet of
workings; east adit, 105 feet of workings. Previously worked for
tungsten.
RADIOACTIVITY Background = 0.03 mR/hr; High = 0.15
mR/hr. Numerous assays reportedly run 0.004 to 0.09% eU3O8. One sample with
purple fluorite contained 467 ppm U3O8.
GEOLOGY Autunite occurs
as coatings on fracture planes in Jurassic(?) granitic rock. Wolframite and
huebnerite are present in quartz veinlets.
RADIOACTIVE MINERALS
Autunite
HOST ROCK Intrusive: Jurassic(?) granitic
rock
MAIN COMMODITIES U, W
OLD MAP NO.
343
REFERENCES AEC Report 3662; Gibbs, 1976; Tingley and Quade,
1986; Mason and others, 1996; Stager and Tingley, 1985; Garside, 1973; 1979;
Ott, ca. 1960
NOTES MRDS: M231735; Ott (ca. 1960) refers to
8,000,000 tons of autunite ore with a select sample up to 2.63% U, however, this
is most likely promotional hype.
NO.
519
NAME National Bank group
COUNTY
Nye
LOCATION NW¼ NW¼ Sec. 15, T12S, R46E; 500 feet south of the
National Bank gold mine
UTMN 4083390
UTME
515800
DISTRICT Bullfrog
QUAD Beatty 7.5'
(1987)
DEVELOPMENT One bulldozer
trench.
RADIOACTIVITY Background = 0.01 mR/hr; High = 0.25
mR/hr. A select sample contained 0.021% cU3O8.
GEOLOGY
Anomalous radioactivity occurs along a fault cutting a Tertiary rhyolitic
ash-flow tuff.
HOST ROCK Volcanic: Tertiary rhyolitic ash-flow
tuff.
MAIN COMMODITIES U
NBMG SAMPLE
1215
OLD MAP NO. 359
REFERENCES AEC Report
3648; Cornwall, 1972; Smith and Tingley, 1983; Smith and others, 1983; Mason and
others, 1996; Garside, 1973.
NOTES MRDS: M241789
NO. 520
NAME Nyemin claims (Nos.
1 and 2)
OTHER NAME Lucky Day
COUNTY
Nye
LOCATION Sec. 8, T12N, R34E
UTMN
4308500
UTME 398300
DISTRICT
Poinsetta
QUAD Mount Annie 7.5' (1980)
DEVELOPMENT
One trench and two small pits.
RADIOACTIVITY Background:
0.04 mR/hr; High = 1.00 mR/hr. A chip sample assayed 0.33%
eU3O8
GEOLOGY Autunite and an unidentified canary yellow,
earthy uranium mineral occur along a silicified fracture zone in a rhyolitic
tuff. The structure strikes N80ºE and dips 60ºS. The uranium minerals are
present in veinlets and along fracture planes.
RADIOACTIVE MINERALS
Autunite; unidentified canary yellow, earthy uranium mineral
HOST
ROCK Volcanic: rhyolitic tuff
MAIN COMMODITIES
U
OLD MAP NO. 364
REFERENCES AEC Report 3643;
Garside, 1973; Durham and Felmlee, 1982, no. 10.
NOTES Exact
location uncertain; UTMs from near center of Sec. 8. Durham and Felmlee (1982)
geographic coordinates place it in NE¼ Sec. 18.
NO. 521
NAME Occurrence (T15N,
R50E)
COUNTY Nye
LOCATION Sec. 25, T15N,
R50E
UTMN 4332500
UTME
562300
DISTRICT Segura Ranch
QUAD Ninemile
Peak 7.5' (1990)
GEOLOGY Kleinhampl and Ziony (1984) show a
uranium prospect west of Ninemile Peak. They report
uranium(?)-vanadium-manganese deposits in carbonaceous and siliceous
shale-argillite; these are an extension of deposits in the Gibellini district to
the north. No evidence is presented (p. 23) that uranium is actually present at
the locality. Prospect appears at or near a N-S trending fault with Ordovician
Pogonip Group on the east side and Tertiary latitic lavas and tuff on the west
(down-thrown) side.
HOST ROCK Sedimentary: carbonaceous and
siliceous shale-argillite
MAIN COMMODITIES
U(?)
REFERENCES Kleinhampl and Ziony, 1984, 1985
NOTES
NO. 522
NAME
Occurrence (T8N, R42E)
OTHER NAME Unnamed
occurrence
COUNTY Nye
LOCATION NW¼ T8N,
R42E
UTMN 4268500
UTME 485000
QUAD
Seyler Peak 7.5' (1971)
GEOLOGY An air anomaly is
reported from this area. Much of this area is underlain by rhyolitic ash-flow
tuffs and some air-fall tuffs and intercalated sedimentary rocks of the Tertiary
tuffs of Peavine Canyon which is locally overlain and intruded by later
rhyolitic flows, plugs, and dikes.
HOST ROCK Volcanic: Tertiary
tuffs of Peavine Canyon
MAIN COMMODITIES U(?)
OLD MAP
NO. 369
REFERENCES Kleinhampl and Ziony, 1985;
Garside, 1973.
NOTES Exact location uncertain; UTMs from near
center of NW quarter of township.
NO.
523
NAME Page Mine
COUNTY
Nye
LOCATION NE¼ NE¼ Sec. 21, T8N, R49E
UTMN
4266300
UTME 547700
DISTRICT
Tybo
QUAD Little Fish Lake 7.5' (1968)
OTHER
PRODUCTION 1916: 28 tons ore averaging 50% Sb
shipped
RADIOACTIVITY Uranium values
GEOLOGY
Anomalous radioactivity is found in rhyolitic tuffaceous rocks that are
extensively silicified and argillized in the Coral Canyon area. Exploration
activity was in the vicinity of the Page Mine. Uranium values and yellow uranium
minerals reported (W. Ivosevic, oral commun.). The Page Mine is an antimony
prospect.
RADIOACTIVE MINERALS yellow uranium
minerals
HOST ROCK Sedimentary: tuffaceous sedimentary
rocks
MAIN COMMODITIES Sb
OTHER COMMODITIES
Ag, Se, U
REFERENCES Kleinhampl and Ziony, 1984, 1985;
Lawrence, 1963; Mason and others, 1996
NOTES MRDS: M231829;
Workings at the Page Mine may not be for uranium.
NO. 524
NAME Pilot group, U-O
Dome claims (Nos. 1-10)
COUNTY Nye
LOCATION
Sec. 12(?), T4N, R44E; Exact location unknown
UTMN
4229500
UTME 500800
DISTRICT
Hannapah
QUAD Hannapah 7.5' (1986)
DEVELOPMENT
Several pits and trenches.
RADIOACTIVITY Background = 0.015
mR/hr; High = 0.06 mR/hr
GEOLOGY Fractured rhyolitic flows
reportedly contain anomalous radioactivity. The locality could not be located in
1969.
HOST ROCK Volcanic: rhyolitic flows
MAIN
COMMODITIES U
OLD MAP NO. 371
REFERENCES
AEC Report 3664; Mason and others, 1996; Garside, 1973.
NOTES
MRDS: M231605; Exact location uncertain; UTMs from near center of
Sec. 12.
NO. 525
NAME
Pine group (5 claims)
COUNTY Nye
LOCATION SE¼
SE¼ Sec. 22, T10N, R44E (protracted)
UTMN
4283711
UTME 498213
DISTRICT Round
Mountain
QUAD Round Mountain 7.5' (1971)
DEVELOPMENT
A 30-foot-deep shaft.
RADIOACTIVITY Background = 0.05
mR/hr; High = 0.5 mR/hr; up to 12,000 cps. One sample contained 1470 ppm U3O8,
and Gibbs (1976) reported up to 0.61% U3O8.
GEOLOGY Torbernite
coats fractures in an altered rhyolite porphyry at the bottom of the shaft. The
porphyry is a dike in Mesozoic quartz monzonite.
RADIOACTIVE MINERALS
torbernite
HOST ROCK Igneous: rhyolite porphyry
dike
MAIN COMMODITIES U
OLD MAP NO.
341
REFERENCES AEC Report 3677; Tingley and Quade, 1986; Mason
and others, 1996; Garside, 1973; Hurley and Parker, 1982, no. 17.
NOTES
MRDS: M231737
NO.
526
NAME Rainbow claims (Nos. 1-20)
OTHER NAME
Air Anomaly No. 3; Rainbow No. 1 claim; Kohlmoos properties; Rainbow and Cord
claims
COUNTY Nye
LOCATION NW¼ NW¼ Sec. 35,
T13N, R45E (protracted)
UTMN 4308838
UTME
510184
DISTRICT Northumberland
QUAD Jet Spring
7.5' 1980
DEVELOPMENT At least 3 shafts, adit, drill holes,
bulldozer cuts.
RADIOACTIVITY Background = 150 cps; High =
4,000-12,000 cps. Samples range from 0.047 to 0.388% cU3O8. Chemical assays are
consistently from 10 to 30% higher than radiometric. Several spots of 5 times
background radioactivity were found. Another sample contained 4,200 ppm
U3O8.
GEOLOGY Autunite is concentrated along fractures and
bedding-plane slips in a black, highly fractured, silicified Ordovician shale.
Radioactivity persists to a depth of 17 feet, where it abruptly terminates at a
low-angle, southward-dipping fault. The mineralized zone, which varies in
thickness from 2 to 5 feet, dips about 45ºS. and strikes eastward. The Rainbow
claims, which are in the area of Air Anomaly No. 3, are reportedly 600 feet from
the Valley View shaft. Torbernite and uranophane(?) were also
reported.
RADIOACTIVE MINERALS Autunite, torbernite,
uranophane(?)
HOST ROCK Sedimentary: Ordovician
shale
MAIN COMMODITIES U
NBMG SAMPLE
608
OLD MAP NO. 337
REFERENCES AEC Report
3653; Meeham, Sharp, and Mallory, 1956; Tingley and Quade, 1986; Garside, 1973;
DMEA, 1958; Castor and Ferdock, 2004; Hurley and Parker, 1982, no. 19; Campbell
and Jones, 1958; DMEA, 1958.
NOTES DMEA studied western end of
Rainbow No. 1 claim.
NO.
527
NAME Red Dog No. 3 prospect
COUNTY
Nye
LOCATION Sec. 26, T11S, R46E; 1,000 feet north of the Black
Bonanza claims.
UTMN 4089100
UTME
518470
DISTRICT Bullfrog
QUAD Beatty 7.5'
(1987)
DEVELOPMENT Old prospect pits.
RADIOACTIVITY
Background = 0.013 mR/hr; High = 0.3 mR/hr
GEOLOGY
Anomalous radioactivity and iron oxide occur along a fracture in tuff and
rhyolite. The fracture trends N10ºW and dips 60ºW.
RADIOACTIVE
MINERALS Anomalously radioactive iron oxide(?)
HOST ROCK
Volcanic: tuff and rhyolite
MAIN COMMODITIES
U
NBMG SAMPLE 1221
OLD MAP NO.
357
REFERENCES AEC Report 3659; Smith and Tingley, 1983; Smith
and others, 1983; Mason and others, 1996; Garside, 1973.
NOTES
MRDS: M231922
NO. 528
NAME
Rex No. 33 claim
COUNTY Nye
LOCATION S½
Sec. 1, T3S, R43E
UTMN 4172600
UTME
490700
DISTRICT Goldfield
QUAD East of
Goldfield 7.5' (1987)
RADIOACTIVITY Background = 0.015 mR/hr;
High = 0.075 mR/hr
GEOLOGY Anomalous radioactivity occurs in a
crush zone in a dacite(?).
HOST ROCK Volcanic:
dacite(?)
MAIN COMMODITIES U
OLD MAP NO.
372
REFERENCES U.S. Atomic. Energy Comm. Prelim. Reconn. Report
3656; Mason and others, 1996; Garside, 1973.
NOTES MRDS:
M231956; Exact location uncertain; UTMs from near center of half section.
NO. 529
NAME Round Meadow Canyon
area
OTHER NAME Western Uranium Corp.
COUNTY
Nye
LOCATION Sec. 15(?), T10N, R45E
UTMN
4281500
UTME 509400
DISTRICT
Barcelona
QUAD Jefferson 7.5' (1971)
GEOLOGY
Anomalous radioactivity has been reported in ash flow tuffs from this
area.
HOST ROCK Volcanic: ash-flow tuffs
MAIN
COMMODITIES U
OLD MAP NO. 340
REFERENCES
Unpublished report by Harry H. Hughes; Tingley and Quade, 1986; Mason and
others, 1996; Garside, 1973.
NOTES MRDS: M231510
NO. 530
NAME Round Mountain
area
OTHER NAME Red Top claim; monazite placer
COUNTY
Nye
LOCATION Sec. 29, T10N, R44E; location
uncertain
UTMN 4282320
UTME
494580
DISTRICT Round Mountain
QUAD Round
Mountain 7.5' (1971)
OTHER PRODUCTION 1906-1968: 145,000 oz
placer Au
GEOLOGY Placer gravels in a wash reportedly contain
rhyolite fragments and granite wash with a little huebnerite and monazite,
together with rare specks of native copper.
HOST ROCK
Sedimentary (placer): alluvium
MAIN COMMODITIES Au, Cu,
Monazite, U, W
OLD MAP NO. 345
REFERENCES
Lovering, 1954; Kral, 1951; Tingley and Quade, 1986; Mason and others, 1996;
Stager and Tingley, 1985; Garside, 1973.
NOTES MRDS: D011089
NO. 531
NAME Sample
locality 15
COUNTY Nye
LOCATION SW¼ SE¼
Sec.21, T10N, R44E
UTMN 4283900
UTME
496700
DISTRICT Round Mountain
QUAD Round
Mountain 7.5' (1971)
RADIOACTIVITY Background = 80 cps; High =
750 cps. An assayed of 0.06% U308 is reported from the most radioactive
area.
GEOLOGY Autunite and anomalous radioactivity are reported
from fracture surfaces in Cretaceous quartz monzonite. The most intense anomaly
occurs at the intersection of two vertical fractures which trend N48ºE and
N70ºW. This prospect apparently lies along the continuation of a N55ºE fault
zone recognized at the Henebergh Tunnel, 0.5 miles to the
southwest.
RADIOACTIVE MINERALS Autunite
HOST ROCK
Intrusive: Cretaceous quartz monzonite
MAIN COMMODITIES
U
OLD MAP NO. 347B
REFERENCES Gibbs, 1976;
Garside, 1979.
NOTES Exact location uncertain; UTMs from near
center of quarter-quarter section.
NO.
532
NAME Shale Pit
COUNTY
Nye
LOCATION Sec. 31, T10N, R44E
UTMN
4280939
UTME 492993
DISTRICT Round
Mountain
QUAD Round Mountain 7.5' (1971)
DEVELOPMENT
Open pit for gold.
RADIOACTIVITY Background = 160-225
cps; High = 300-500 cps. One sample contained 184 ppm U3O8.
GEOLOGY
Anomalous radioactivity is concentrated at the unconformity between
Tertiary ash-flow tuff and Paleozoic shale. The unconformity is marked by a
debris flow(?) unit. Anomalous radioactivity was also observed in the ash-flow
units.
HOST ROCK Volcanic: ash-flow tuff
MAIN
COMMODITIES Au
OTHER COMMODITIES
U
REFERENCES Hurley and Parker, 1982, no. 10.
NOTES
NO. 533
NAME
Shoe-Shoe mine
OTHER NAME Shoe
COUNTY
Nye
LOCATION Sec. 33, T6N, R57E, (unsurveyed). Projected from
the west
UTMN 4244190
UTME
624140
DISTRICT Troy
QUAD Troy Canyon 7.5'
(1990)
DEVELOPMENT Extensive underground workings for gold and
silver in the late 1800's.
RADIOACTIVITY Background = 0.02
mR/hr; High = 3.5 mR/hr. A chip sample contained 0.19% cU3O8.
GEOLOGY
Anomalous radioactivity is associated with heavy iron-oxide coatings
along a vein in a fault zone in quartzite near the contact with a quartz
monzonite intrusive. Minor amounts of lead, zinc, silver, and gold are
reported.
RADIOACTIVE MINERALS Anomalously radioactive iron
oxide
HOST ROCK Sedimentary: quartzite
MAIN
COMMODITIES Ag, Au
OTHER COMMODITIES Pb, U,
Zn
OLD MAP NO. 350
REFERENCES AEC Report 3644;
Tingley and Quade, 1986; Mason and others, 1996; Garside, 1973.
NOTES
MRDS: M231792
NO.
534
NAME Six-Mile claims (Nos. 1-11)
OTHER NAME
Jack Group; 6-Mile claims; Pete prospect
COUNTY
Nye
LOCATION NE¼ Sec. 19, T10N, R51E
UTMN
4285690
UTME 563430
DISTRICT
Morey
QUAD Morey Peak 7.5' (1967)
DEVELOPMENT
Bulldozer trenches.
RADIOACTIVITY Background = 0.02 mR/hr; High
= 0.20 mR/hr. Samples contained 0.02% U3O8 Higher assays are
reported.
GEOLOGY Torbernite and autunite are reported from
Paleozoic shales. The prospect is a few kilometers north of the margin of the
Morey calderon.
RADIOACTIVE MINERALS Autunite;
torbernite
HOST ROCK Sedimentary: Paleozoic shales
MAIN
COMMODITIES U, V
OLD MAP NO.
367
REFERENCES AEC Report 3642; Mason and others, 1996;
Garside, 1973; Hurley and Parker, 1982, no, 22.
NOTES MRDS:
M231705; Described with the Titus-Black prospect to the south by Hurley and
Parker (1982); that description may apply to this property as well.
NO. 535
NAME Smuggler
mine
COUNTY Nye
LOCATION Sec. 13(?), T13N,
R36E; 500 feet west of the Illinois mine
UTMN
4316280
UTME 422730
DISTRICT
Lodi
QUAD Downeyville 7.5' (1988)
OTHER PRODUCTION
1956: 28 units WO3
DEVELOPMENT About 2,000 feet of adits
and shafts.
RADIOACTIVITY Background = 0.015 mR/hr; High = 0.08
mR/hr
GEOLOGY Anomalous radioactivity is confined to dump
material reportedly from a 90-foot shaft. The workings are along the contact
between limestone and a granodiorite intrusive. Scattered lead, silver, and gold
mineralization occurs along the contact. A trace of scheelite is also
reported.
HOST ROCK Sedimentary/Intrusive: limestone;
granodiorite
MAIN COMMODITIES Ag, Au
OTHER
COMMODITIES Pb, U, W
NBMG SAMPLE 2208
OLD MAP
NO. 333
REFERENCES AEC Reports 3679, 3699; Taylor,
1953b, p. 219; Kral, 1951, p. 95, 96; Tingley and Quade, 1986; Mason and others,
1996; Stager and Tingley, 1985; Garside, 1973.
NOTES MRDS:
M231651
NO. 536
NAME
Stone Cabin Valley claims
COUNTY Nye
LOCATION
Sec. 6, T3N, R48E
UTMN 4221320
UTME
530380
QUAD Stone Cabin Ranch 7.5' (1986)
DEVELOPMENT
Bulldozer cuts.
RADIOACTIVITY Background, 180 cps; High,
2-3 times background. Analyses up to 107 ppm U3O8.
GEOLOGY
Anomalous radioactivity is found in silicified (opalized?) lithic sandstone and
volcanic-clast conglomerate below the Tertiary Shingle Pass Tuff.
HOST
ROCK Sedimentary: volcanic sandstone and conglomerate
MAIN
COMMODITIES U
REFERENCES Hurley and Parker, 1982,
no. 21.
NOTES
NO.
537
NAME Thompson Mine
OTHER NAME Locality
1037
COUNTY Nye
LOCATION Sec. 29, T11S,
R48E
UTMN 4089600
UTME
532300
DISTRICT Bare Mountain
QUAD Beatty
Mountain 7.5' (1987)
OTHER PRODUCTION After 1929: Very small
mercury production.
DEVELOPMENT Adits, shafts, and bulldozer
cuts (for quicksilver).
GEOLOGY Carnotite(?) is associated with
finely disseminated cinnabar in opalized and brecciated Miocene ash-flow
tuffs.
RADIOACTIVE MINERALS carnotite(?)
HOST ROCK
Volcanic: Miocene rhyolitic ash-flow tuffs
MAIN COMMODITIES
Hg
OTHER COMMODITIES U(?)
NBMG SAMPLE
1037
REFERENCES Smith and Tingley, 1983; Smith and others,
1983; Tingley, 1984b; Quade and Smith, 1982; Bailey and Phoenix,
1944
NOTES UTM location from Smith and Tingley, 1983; somewhat
different location in Tingley, 1984b.
NO.
538
NAME Thor claims (Nos. 1-3)
OTHER NAME
Roberts group; Currant area claims; Thor uranium prospect
COUNTY
Nye
LOCATION Sec. 12(?), T10N, R57E
UTMN
4288950
UTME 634240
DISTRICT
Currant
QUAD Currant 7.5' (1990)
DEVELOPMENT
One pit and a 75-foot inclined shaft.
RADIOACTIVITY Background
= 0.01 mR/hr; High = 0.1 mR/hr. A 3-foot channel sample contained 0.11%
cU3O8.
GEOLOGY Anomalous radioactivity is present along a
N19ºE, 65ºW fault zone in a Tertiary rhyolite tuff and latite. The highest
radioactivity is found near the surface, and is associated with limonite
coatings on fracture surfaces. Autunite was reported from one locality.
Conglomerate and sandstone are reportedly mineralized.
RADIOACTIVE
MINERALS Anomalously radioactive limonite; autunite
HOST
ROCK Volcanic: Tertiary rhyolite tuff and latite
MAIN
COMMODITIES U
NBMG SAMPLE 909
OLD MAP NO.
365
REFERENCES AEC Reports 3683, 3689, 3690, 3709;
Davis, 1954; Kral, 1951, p. 47; Mason and others, 1996; Tingley and Bentz,
1983a,b; Kleinhampl and Ziony, 1984; Garside, 1973; 1979.
NOTES
MRDS: M231553
NO. 539
NAME
Titus-Black prospect
COUNTY Nye
LOCATION
Sec. 25, T10N, R50E (protracted)
UTMN
4284350
UTME 559210
DISTRICT
Morey
QUAD Morey Peak 7.5' (1967)
DEVELOPMENT
Shallow bulldozer cuts and drill holes.
RADIOACTIVITY
Background = 150-200 cps; High 300-1,700 cps. Up to 0.27%
U3O8.
GEOLOGY Carnotite and anomalous radioactivity are
associated with iron-oxide minerals in highly fractured and weathered,
interbedded Paleozoic shale, chert, and siltstone. A discontinuous zone 30-100
cm contains up to 0.27 U3O8. V and U are not directly associated. A diorite dike
cuts the rocks. The prospect is a few kilometers north of the margins of the
Morey and Hot Creek calderas
RADIOACTIVE MINERALS
carnotite
HOST ROCK Sedimentary: Paleozoic shales
MAIN
COMMODITIES U, V
REFERENCES Hurley and Parker, 1982,
no, 22.
NOTES Described with the Six-Mile (Pete) claims to the
north by Hurley and Parker (1982).
NO.
540
NAME Ultra Mining Co. group (Nos. 1-16)
COUNTY
Nye
LOCATION SW¼ Sec. 10, T15N, R48E
(protracted)
UTMN 4333080
UTME
539240
QUAD White Sage Canyon 7.5' (1989)
DEVELOPMENT
Small pit and shallow bulldozer cuts.
RADIOACTIVITY
Background = 0.03 mR/hr; High = 0.08 mR/hr. Mitchell and Quade (1982) report 3-5
times background, but only 15 ppm U3O8.
GEOLOGY Very slightly
anomalous radioactivity is associated with N80º high-angle faults which cut
ash-flow tuffs and a gravel between them. Travertine, gypsum, rare uraniferous
opal, and iron- and manganese-oxide minerals are present. The minerals were
probably deposited by springs.
HOST ROCK Volcanic: ash-flow
tuffs
MAIN COMMODITIES U(?)
NBMG SAMPLE
430
OLD MAP NO. 363
REFERENCES AEC Report
3469; Tingley and Smith, 1983a, b; Garside, 1973; Mitchell and Quade, 1982, no.
LF-5.
NOTES
NO.
541
NAME Violet Blue prospect
COUNTY
Nye
LOCATION NE¼ Sec. 28, T10N, R44E; one mile northeast of the
Henebergh Tunnel, just off Shoshone Canyon.
UTMN
4283360
UTME 495570
DISTRICT Round
Mountain
QUAD Round Mountain 7.5' (1971)
OTHER
PRODUCTION 1907-1917: small W ore production
DEVELOPMENT
A 160-foot adit (in search of tungsten).
RADIOACTIVITY
Select samples reportedly contain up to 0.2% U3O8.
GEOLOGY Old
workings for tungsten (as huebnerite) followed a shear zone in the granite.
Autunite is reportedly present.
RADIOACTIVE MINERALS
monazite
HOST ROCK Intrusive: granite
MAIN
COMMODITIES U, W
OLD MAP NO.
346
REFERENCES Kral, 1951, p. 154, 155; Tingley and Quade,
1986; Mason and others, 1996; Stager and Tingley, 1985; Garside,
1973.
NOTES MRDS: M233466
NO.
542
NAME Virginia Lode claim (patent no.
2487)
OTHER NAME Gibraltar mine.
COUNTY
Nye
LOCATION Center N½ Sec. 16, T12S, R46E
UTMN
4083220
UTME 514860
DISTRICT
Bullfrog
QUAD Beatty 7.5' (1987)
DEVELOPMENT
Nearby gold-silver workings.
RADIOACTIVITY Background = 0.015
mR/hr; High = 0.15 mR/hr
GEOLOGY Anomalous radioactivity occurs
along a fracture zone in a rhyolitic ash-flow tuff. The zone trends N25ºE and
dips 80ºSE. Surface radioactivity is confined to an area 1 foot long and 3 in.
wide.
HOST ROCK Volcanic: Tertiary rhyolitic ash-flow
tuff.
MAIN COMMODITIES Ag, Au
OTHER COMMODITIES
U
OLD MAP NO. 360
REFERENCES AEC Report
3658; Smith and Tingley, 1983; Smith and others, 1983; Mason and others, 1996;
Garside, 1973.
NOTES MRDS: M231926, M241781
NO. 543
NAME War Cloud
prospect
OTHER NAME War Cloud property
COUNTY
Nye
LOCATION Sec. 24, T14N, R39E (unsurveyed)
UTMN
4323960
UTME 453040
DISTRICT
Jackson
QUAD South Shoshone Peak 7.5' (1988)
OTHER
PRODUCTION 1940s: small mercury production from a
retort
GEOLOGY Cinnabar occurs as pointy, disseminated crystals
with iron oxide in fractures within the silicic ash-flow tuff of the Bonita
Canyon Formation. It also occurs in calcite-opal veins with fluorite ands
autunite.
RADIOACTIVE MINERALS Autunite
HOST ROCK
Volcanic: Bonita Canyon Formation
MAIN COMMODITIES F,
Hg, U
NBMG SAMPLE 412
REFERENCES Tingley and
Smith, 1983a, b; Mason and others, 1996; Castor and others, 2004.
NOTES
MRDS: M055290
NO.
544
NAME White River Valley uranium property
OTHER
NAME Thelon Ventures, Ltd.; Wold Nuclear; Union Carbide; Energy
Metals Corp.
COUNTY Nye
LOCATION Secs. 26, 27,
28, 32, 33, 34, 35, T8N, R61E
UTMN 4264500
UTME
664500
QUAD Moorman Spring SE 7.5' (1969)
U
RESOURCES/ RESERVES 2006: Mineralization estimate: 1 to 4 million
lbs
DEVELOPMENT Drill holes
RADIOACTIVITY
Drilling intersected radiometric grades of 0.04% U3O8 over 30
feet
GEOLOGY Union Carbide outlined two areas encompassing
almost 500 acres with known sandstone hosted uranium mineralization. The
mineralization lies at depths of 900 feet to 1,100 feet.
HOST ROCK
Sedimentary: sandstone
MAIN COMMODITIES
U
REFERENCES Thelon Ventures, Ltd, 2006; Resource Capital
Research, 2006
NOTES Exact location uncertain; Thelon has area
originally claimed by Wold and Union Carbide; UTMs from near center of Wold
claim group; Union Carbide had much larger area in at least three townships
claimed.
NO. 545
NAME
Williams property
COUNTY Nye
LOCATION Sec.
24(?), T8N, R40E; Exact location unknown
UTMN
4265600
UTME 462500
DISTRICT
Cloverdale
QUAD Secret Basin 7.5' (1982)
GEOLOGY
Section 24 is largely underlain by 21-24 million-year-old rhyolitic to
rhyodacitic ash-flow tuff of the Toiyabe Quartz Latite. In the southeast
section, the Toiyabe Quartz Latite is in contact with an apparently older
Tertiary unit of ash-low tuffs, breccias, lavas, and volcanogenic sedimentary
rocks of silicic composition.
HOST ROCK Volcanic: Tertiary
Toiyabe Quartz Latite
MAIN COMMODITIES U(?)
OLD MAP
NO. 370
REFERENCES U.S. Atomic Energy Comm.
unpublished map; Kleinhampl and Ziony, 1985; Garside, 1973.
NOTES
Exact location uncertain; UTMs from near center of Sec. 24.
NO. 546
NAME Wonder Girl
prospect
COUNTY Nye
LOCATION Sec. 13(?), T13N,
R36E (unsurveyed). Projected from the east
UTMN
4316050
UTME 423960
DISTRICT
Lodi
QUAD Downeyville 7.5' (1988)
DEVELOPMENT
Two small pits.
RADIOACTIVITY Background = 0.02 mR/hr; High =
0.08 mR/hr. A grab sample from a dump contained 0.03% uranium.
GEOLOGY
Anomalous radioactivity occurs in granodiorite along a quartz vein which
strikes N69ºW and dips 64ºSW. The vein is tabular, up to 3 feet wide, and can be
traced for 150 feet. Galena, chalcopyrite(?), pyrite, and secondary lead,
copper, and iron minerals are present in small amounts.
HOST ROCK
Intrusive: granodiorite
MAIN COMMODITIES Cu, Pb,
U
OLD MAP NO. 335
REFERENCES AEC Reports 3680,
3701; Taylor, 1953b, p. 219; Tingley and Quade, 1986; Mason and others, 1996;
Garside, 1973.
NOTES MRDS: M231654
NO. 547
NAME AAA uranium
occurrence
COUNTY Pershing
LOCATION Secs. 19,
T25N, R26E
UTMN 4442000
UTME
311000
DISTRICT Juniper Range
QUAD Sage Hen
Spring 7.5' (1981)
DEVELOPMENT Two bulldozer cuts and four
drill holes.
RADIOACTIVITY 1100 cps (18 x background); Deposit
is irregular with 1040 cps above background at drillsite, and 200-400 cps (3-6 x
background throughout outcrop. Sample MEX 49 (10-foot channel across cut)
contains 15.0 ppm cU3O8; sample MEX 50 (drill cuttings) contains 480.0 ppm
cU3O8.
GEOLOGY The site is in argillaceous metasediments of
hornfels, argillite, slate, and minor quartzite of the Triassic-Jurassic Auld
Lang Syne Group in contact with a Cretaceous granodiorite-quartz monzonite
pluton. Yellow and green, nonfluoresecent uranium minerals are found as coatings
on fracture surfaces of argillite. Also present as fracture coatings are
strongly fluorescent hyaline opal, clays, and an acicular zeolite(?)
mineral.
RADIOACTIVE MINERALS yellow and green, nonfluoresecent
uranium minerals
HOST ROCK Sedimentary: Triassic-Jurassic Auld
Lang Syne Group
MAIN COMMODITIES U, W
REFERENCES
Bonham and others, 1985; Mason and others, 1996; Berry and others, 1982,
no. 19.
NOTES MRDS: M242685; Exact location uncertain; UTMs
from near center of Sec. 19.
NO.
548
NAME Ag-Au-U prospect no. 1
COUNTY
Pershing
LOCATION Sec. 9, T28N, R24E
UTMN
4465200
UTME 305800
QUAD Purgatory Peak 7.5'
(1990)
DEVELOPMENT Two 30-foot trenches
GEOLOGY
0.5-foot thick iron-oxide stained quartz vein cuts altered
granodiorite.
RADIOACTIVE MINERALS Anomalously radioactive iron
oxide(?)
HOST ROCK Intrusive: granodiorite
MAIN
COMMODITIES Ag, Au, U
REFERENCES Mason and others,
1996
NOTES MRDS: M242901; UTMs from MRDS.
NO. 549
NAME Ag-U prospect no.
1
COUNTY Pershing
LOCATION Sec. 9, T28N,
R24E
UTMN 4464050
UTME 305700
QUAD
Purgatory Peak 7.5' (1990)
GEOLOGY Two 1-foot thick
aplite dikes enclose 0.3-foot thick veins of iron-oxide stained quartz. The
dikes are 5 feet apart and are exposed for 50 feet along strike trending
northward and dipping 10 degrees to the west. The dikes cut
granodiorite.
RADIOACTIVE MINERALS Anomalously radioactive iron
oxide(?)
HOST ROCK Intrusive: aplite dikes;
granodiorite
MAIN COMMODITIES Ag, Au, U
REFERENCES
Mason and others, 1996
NOTES MRDS: M242902; UTMs from
MRDS.
NO. 550
NAME Ag-U
prospect no. 2
COUNTY Pershing
LOCATION Sec.
10, T28N, R24E
UTMN 4464750
UTME
306250
QUAD Purgatory Peak 7.5' (1990)
GEOLOGY
A 1600-foot thick wide zone of leached and iron-oxide stained quartz veins
cutting northeasterly through granodiorite.
RADIOACTIVE MINERALS
Anomalously radioactive iron oxide(?)
HOST ROCK
Intrusive: granodiorite
MAIN COMMODITIES Ag, Pb,
U
REFERENCES Mason and others, 1996
NOTES
MRDS: M242903; UTMs from MRDS.
NO.
551
NAME Ag-U prospect no. 3
COUNTY
Pershing
LOCATION Sec. 14, T28N, R24E
UTMN
4472850
UTME 308700
QUAD Purgatory Peak 7.5'
(1990)
DEVELOPMENT One prospect pit
GEOLOGY
6-foot thick iron-oxide stained smoky quartz vein exposed for 7 feet along
strike in granodiorite.
RADIOACTIVE MINERALS Anomalously
radioactive iron oxide(?)
HOST ROCK Intrusive:
granodiorite
MAIN COMMODITIES Ag, U
REFERENCES
Mason and others, 1996
NOTES MRDS: M242899; UTMs from MRDS.
NO. 552
NAME Big Question
claim
OTHER NAME Altonella Nos. 1, 2, 3, 4
COUNTY
Pershing
LOCATION SW¼ NE¼ Sec. 3, T26N,
R24E
UTMN 4447100
UTME
306300
DISTRICT Nightingale
QUAD Tohakum Peak
NE 7.5' (1964)
RADIOACTIVITY Background = 0.02 mR/hr; High =
0.045. Locally 19 times background. A sample reportedly from this property
contained 0.154% cU3O8, but Berry and others (1982) reported only 175
ppm.
GEOLOGY Anomalous radioactivity is associated with
pegmatites and with the contact between altered granitic rock and argillite of
the Triassic Auld Lang Syne.
HOST ROCK Metamorphic: shales,
phyllites, and schists
MAIN COMMODITIES U
OLD MAP NO.
378A
REFERENCES AEC Report 3733; Mason and others, 1996;
Garside, 1973; 1979.
NOTES MRDS: M242686; Exact location
uncertain; UTMs from near center of quarter-quarter section.
NO. 553
NAME Black Granite group
(Nos. 1-12)
OTHER NAME Willow group (nos.
1-19)
COUNTY Pershing
LOCATION NE¼(?), Sec. 4,
T28N, R24E
UTMN 4466500
UTME
305400
QUAD Purgatory Peak 7.5' (1990)
DEVELOPMENT
Several cuts.
RADIOACTIVITY Background = 0.03 mR/hr;
High = 0.05 mR/hr.
GEOLOGY Very slight radioactivity is
associated with pegmatite and rhyolite dikes in granite.
HOST ROCK
Intrusive: pegmatite and rhyolite dikes
MAIN COMMODITIES
U
OLD MAP NO. 381
REFERENCES AEC Report 3726;
Mason and others, 1996; Garside, 1973; 1979.
NOTES MRDS:
M242904; Exact location uncertain; UTMs from near center of quarter section.
NO. 554
NAME Black Jack
mine
OTHER NAME Blackjack mine; Eldorado mine; Ruby mine;
Pearl
COUNTY Pershing
LOCATION Sec. 25, T31N,
R33E
UTMN 4486160
UTME
397490
DISTRICT Imlay
QUAD Star Peak 7.5'
(1987)
OTHER PRODUCTION 1913-1914, 1939-1942: 1,259 flasks of
Hg
DEVELOPMENT Adits and open cuts for mercury; over 1,200 feet
of workings
GEOLOGY Some specimens of cinnabar ore from this
deposit were found to be slightly radioactive. The cinnabar mineralization is
associated with a black Triassic shale below a massive limestone.
HOST
ROCK Sedimentary: black shale
MAIN COMMODITIES
Hg
OTHER COMMODITIES U(?)
NBMG SAMPLE 2521,
2522
REFERENCES Bonham and others, 1985; Bailey, ca. 1980;
Bailey and Phoenix, 1944; Mason and others, 1996; Johnson, 1977
NOTES
MRDS: M055017
NO.
555
NAME C. L. Point group (Nos. 1-32)
OTHER NAME
C. L. Point claims; C. L. Point prospect
COUNTY
Pershing
LOCATION Secs. 10, 11, T28N, R37E
UTMN
4462500
UTME 432500
DISTRICT
Kennedy
QUAD Granite Mountain 7.5' (1990)
DEVELOPMENT
Prospect pits and short adit.
RADIOACTIVITY Background =
0.015 mR/hr; High = 0.04 mR/hr
GEOLOGY Very slight
radioactivity has been reported in a granitic intrusion near the contact with
shales. No anomalous radioactivity could be found by Berridge and Wolverson
(1982), who reported the granitic rock to contain 2 ppm U3O8.
HOST
ROCK Intrusive: granitic intrusion
MAIN COMMODITIES
U
OLD MAP NO. 390
REFERENCES AEC Report 3722;
Johnson, 1977; Mason and others, 1996; Garside, 1973; Berridge and Wolverson
(1982).
NOTES MRDS: M242665; Exact location uncertain; UTMs
from near center of two sections.
NO.
556
NAME Cay-U claims
COUNTY
Pershing
LOCATION NW¼ Sec. 12, T26N, R24E
UTMN
4445600
UTME 308900
DISTRICT
Nightingale
QUAD Tunnel Spring 7.5' (1981)
GEOLOGY
Uranium minerals are reported in metamorphic rocks which occur as roof
pendants in a granitic intrusive. The geology is similar to the nearby Four
Jacks claims.
RADIOACTIVE MINERALS uranium minerals
HOST
ROCK Metamorphic: metamorphic rocks
MAIN COMMODITIES
U
OLD MAP NO. 378B
REFERENCES Don Antrim, oral
commun, 1974; Garside, 1979.
NOTES Exact location uncertain;
UTMs from near center of quarter section. Cy-U Nos. 1-4 are noted in SE¼, Sec.
13 in BLM claims fiche
NO.
557
NAME Copper King Mine
COUNTY
Pershing
LOCATION Sec. 27, T25N, R28E
UTMN
4430296
UTME 343593
DISTRICT Copper
Valley
QUAD Ragged Top Mtn.
OTHER PRODUCTION
1952-1953: 670 units WO3
DEVELOPMENT Shallow shafts and open
pit for tungsten
RADIOACTIVITY 800 cps over an area of 1 foot
square. A select sample contained 48 ppm cU3O8.
GEOLOGY A small
area of anomalous radioactivity was observed in garnet skarn and recrystallized
limestone.
HOST ROCK Sedimentary: Limestone
MAIN
COMMODITIES W
OTHER COMMODITIES
U
REFERENCES Berry and others, 1982; Stager and Tingley,
1985.
NOTES Location from Berry and others (1982) places
prospect near east edge of Sec. 28.
NO.
558
NAME Four Jacks claims and Pennies claims (about 70
claims)
OTHER NAME Dart mine(?); Maybeso
prospect
COUNTY Pershing
LOCATION S½ Sec. 10,
T26N, R24E
UTMN 4445100
UTME
305960
DISTRICT Nightingale
QUAD Tohakum Peak
NE 7.5' (1964)
DEVELOPMENT Numerous bulldozer trenches and
prospect pits.
RADIOACTIVITY Background = 0.038 mR/hr; High =
1.7 mR/hr/ Berry and others (1982) report up to 140 times background and up to
2220 ppm U3O8.
GEOLOGY Autunite and phosphuranylite(?) are
found in gray schists and quartzites along and within several pegmatite dikes.
The metamorphic rocks occur as scattered roof pendants in a Cretaceous(?)
granitic intrusive. Uranium minerals occur along joints and fractures, mainly in
the metamorphic rocks. Mineralization usually extends 4 to 6 feet outward from
the dikes, with slightly anomalous radioactivity extending somewhat further.
Radioactivity was noted for over 50 feet along the strike of one dike. Many of
the pegmatite dikes are bleached and partially altered to clay
minerals.
RADIOACTIVE MINERALS Autunite;
phosphuranylite(?)
HOST ROCK Metamorphic/Intrusive: gray
schists and quartzites; pegmatite dikes
MAIN COMMODITIES Au,
U
NBMG SAMPLE 2908, 2909, 2910
OLD MAP NO.
376
REFERENCES AEC Report 3729; Bonham and others, 1985; Mason
and others, 1996; Garside, 1973; Castor and Ferdock, 2004.
NOTES
MRDS: M242689
NO.
559
NAME Jack group (18 claims)
OTHER NAME
Jack claims; Woffer claim
COUNTY Pershing
LOCATION
Sec. 1(?), T27N, R24E
UTMN 4456500
UTME
309500
QUAD Sage Hen Spring 7.5' (1981)
DEVELOPMENT
Location pits.
RADIOACTIVITY Background = 0.03 mR/hr;
High = 0.15 mR/hr. Two select samples contain 0.1% U3O8.
GEOLOGY
A yellow, powdery uranium mineral reportedly occurs in association with a
highly altered pegmatite dike. Berry and others (1982) reported radioactivity
associated with quartz-tourmaline veins and iron-oxide minerals in altered
granitic rock.
RADIOACTIVE MINERALS yellow, powdery uranium
mineral
HOST ROCK Intrusive: highly altered pegmatite
dike
MAIN COMMODITIES U
OLD MAP NO.
379
REFERENCES AEC Report 3725; Garside, 1973; Mason and
others, 1996; Berry and others, 1982.
NOTES MRDS: M242704;
Exact location uncertain; UTMs from near center of Sec. 1.
NO. 560
NAME Jackpot claims
(Nos. 1-8)
COUNTY Pershing
LOCATION Sec.
10(?), T28N, R29E; Exact location uncertain
UTMN
4463500
UTME 354500
DISTRICT
Velvet
QUAD Trinity Pass 7.5' (1981)
DEVELOPMENT
Location pits.
RADIOACTIVITY Background = 0.015 mR/hr;
High = 0.030 mR/hr
GEOLOGY Very slight radioactivity is
reported from volcanic flows and tuffs.
HOST ROCK Volcanic:
volcanic flows and tuffs
MAIN COMMODITIES U(?)
OLD MAP
NO. 387
REFERENCES AEC Report 3721; Garside,
1973.
NOTES Exact location unknown; UTMs from near middle of
Sec. 10.
NO. 561
NAME
Jersey Valley Wash
COUNTY Pershing
LOCATION
Center Sec. 8, T27N, R40E
UTMN 4452800
UTME
457100
DISTRICT Jersey
QUAD Home Station Ranch
7.5' (1990)
DEVELOPMENT Bulldozer cuts (for
zeolites)
RADIOACTIVITY Radioactivity up to 3 times background;
analyses up to 111 ppm U3O8.
GEOLOGY Anomalous radioactivity is
found in Tertiary tuffaceous lacustrine sedimentary rocks in an area previously
explored for zeolite minerals.
HOST ROCK Sedimentary: Tertiary
tuffaceous lacustrine rocks
MAIN COMMODITIES zeolite,
U
REFERENCES Berridge and Wolverson, 1982.
NOTES
NO. 562
NAME
Limbo group
OTHER NAME Kimbo group
COUNTY
Pershing
LOCATION NE¼ Sec. 9, T28N, R24E
UTMN
4465000
UTME 305400
QUAD Purgatory Peak 7.5'
(1990)
DEVELOPMENT Three shallow pits.
RADIOACTIVITY
Background = 0.03 mR/hr; High = 0.20 mR/hr
GEOLOGY
Pegmatite and quartz dikes cut granitic rocks. The anomalous radioactivity is
probably associated with the pegmatites.
HOST ROCK Intrusive:
pegmatite and quartz dikes and granitic rock
MAIN COMMODITIES
Ag, Au, U
OLD MAP NO. 380
REFERENCES AEC
Report 3727; Mason and others, 1996; Garside, 1973; 1979.
NOTES
MRDS: M242905; Exact location uncertain; UTMs from near center of quarter
section.
NO. 563
NAME
Lincoln Hill mine
OTHER NAME Fairhauen; Fairhaven; Major group;
Lincoln Hill property; Fairhaven Uranium Mines, Inc.
COUNTY
Pershing
LOCATION NW¼ Sec. 18, T28N, R34E
UTMN
4460910
UTME 397340
DISTRICT
Rochester
QUAD Rochester 7.5' (1987)
OTHER PRODUCTION
1915-1917: 409 tons of Ag and Au ore valued at
$16,844
DEVELOPMENT Extensive old workings for precious
metals.
RADIOACTIVITY Background = 0.07 mR/hr; High = 1.0
mR/hr. Up to 8 times background (600 cps).
GEOLOGY Anomalous
radioactivity occurs along a fault zone in rhyolite. Several nearby faults are
slightly radioactive, and the radioactivity extends over an area of 2000 by 2000
feet. The radioactivity may be associated with the gold-quartz-tourmaline veins.
The highest radioactivity is associated with limonite-stained joints in
Rochester Rhyolite in a road cut about 150 feet southwest of the main Lincoln
Hill Mine adit.
HOST ROCK Volcanic: rhyolite
MAIN
COMMODITIES Ag, Au
OTHER COMMODITIES U,
Zn
NBMG SAMPLE 2557
OLD MAP NO.
389
REFERENCES AEC Report 3736; Garside, 1973; Gallagher, 1956;
Couch and Carpenter, 1943; Berry and others, 1982.
NOTES MRDS:
M060369
NO. 564
NAME
Locality Mex 128
COUNTY Pershing
LOCATION Sec.
35, T32N, R28E
UTMN 4494576
UTME
346899
DISTRICT Seven Troughs
QUAD Juniper
Canyon 7.5' (1982)
DEVELOPMENT Nearby workings for
copper.
RADIOACTIVITY Up to 80 times background, 8000 cps. Up
to 140 ppm U3O8.
GEOLOGY Anomalous radioactivity and uranium
are found in leucogranite near copper staining. It is associated with limonite
staining and jointing.
HOST ROCK Igneous: Cretaceous
leucogranite
MAIN COMMODITIES Cu
OTHER COMMODITIES
U
REFERENCES Berry and others, 1982, no. 20.
NOTES
Location based on geographic coordinates and sketch map of Berry and
others (1982).
NO. 565
NAME
Locality Mex 247
COUNTY Pershing
LOCATION
Sec. 33 oR34, T26N, R26E
UTMN 4438559
UTME
325398
DISTRICT Juniper Range
QUAD Blue
Wing Spring 7.5' (1981)
RADIOACTIVITY 10 times background;
altered quartz monzonite contained 451 ppm U3O8.
GEOLOGY
Anomalous radioactivity is associated with limonite-stained joints in quartz
monzonite. An aplite-pegmatite dike is immediately adjacent.
HOST ROCK
Igneous: quartz monzonite
MAIN COMMODITIES
U
REFERENCES Berry and others, 1982.
NOTES
Berry and others (1982) geographic coordinates place location in Sec. 34
NO. 566
NAME Locality Mex
253
COUNTY Pershing
LOCATION Sec. 1, T27N,
R26E
UTMN 4456964
UTME 328660
QUAD
Bob Spring 7.5' (1981)
RADIOACTIVITY Background=150 cps;
High=1050 cps. 262 ppm U3O8.
GEOLOGY Anomalous radioactivity is
associated with limonite stained joints in a pegmatite dike.
HOST ROCK
Intrusive: pegmatite dike
MAIN COMMODITIES
U
REFERENCES Berry and others, 1982.
NOTES
NO. 567
NAME Long
Lease
OTHER NAME Long Tungsten mine; Long; Chalmers and
Bedford; After
COUNTY Pershing
LOCATION Sec.
33, T26N, R32E
UTMN 4437400
UTME
381780
DISTRICT Wild Horse
QUAD Wild Horse
Pass 7.5' (1987)
OTHER PRODUCTION 1952-1953, 1956, 1972-1973,
1978-1979: 6,260 units WO3
DEVELOPMENT Surface cuts and pits,
and 620 feet of drifts and adits. Workings are for
tungsten.
RADIOACTIVITY Background = 100(?) cps; high = 900
cps. The best sample assayed 0.11% U3 Os, but many samples contained only 0.01
to 0.05% eU3O8. Chemical analyses were slightly higher than
radiometric.
GEOLOGY In the mine area, Triassic limestones and
shales have been intruded by a quartz monzonite stock. The limestones have been
recrystallized to marble, and the argillaceous beds changed to hornfels and
blocky argillites. Scheelite-bearing bodies occur along the intrusive contact.
Uraninite and allanite are associated with pyrite and molybdenite in small zones
of silicification within the tactite. Uraninite is the main radioactive mineral,
but allanite reportedly occurs intergrown in a zonal arrangement with
epidote.
RADIOACTIVE MINERALS uraninite
HOST ROCK
Sedimentary: Triassic limestones and shales
MAIN COMMODITIES
W
OTHER COMMODITIES Mo, U
NBMG SAMPLE
2588
OLD MAP NO. 391
REFERENCES AEC Reports
3737, 3737a; Davis, 1954; Stager and Tingley, 1985; Johnson, 1977; Bonham and
others, 1985; Garside, 1973; Castor and Ferdock, 2004; Berry and others,
1982.
NOTES
NO.
568
NAME Majuba Hill mine
OTHER NAME Majuba
Hills mine.
COUNTY Pershing
LOCATION Sec. 2,
T32N, R31E
UTMN 4502910
UTME
375840
DISTRICT Antelope
QUAD Majuba Mountain
7.5' (1971)
OTHER PRODUCTION 1907-76: 2,849,000 lbs. Cu, 21 K
lbs. Sn, “good values” Ag; 1931-57: District(?): 91,749 oz Ag; 1943-45: Ore:
23,390 t, 206 oz Au, 36,829 oz Ag, 1,875,933 lbs Cu, 1944: 1,901 lbs
Pb
DEVELOPMENT Three adit levels including over 5,000 feet of
interconnected workings. Most of the development work resulted from the
exploration for copper and tin.
RADIOACTIVITY A 3-foot-wide
vein is estimated to average 0.3% U3O8, and the adjacent 15 feet of wall rock
averages 0.1% U3O8. Sample from hanging wall of Majuba fault assayed: 0.35%
U3O8
GEOLOGY Majuba Hill is a complex Tertiary rhyolite dome
which intrudes Triassic(?) argillites, quartzites, and impure limestones. Three
types of rhyolitic intrusive rocks are present, and dike like bodies of chaotic
breccias occur throughout the plug. These breccias contain fragments of the
surrounding sedimentary rocks as well as the two older types of rhyolite. Both
the rhyolites and older rocks have been locally tourmalinized, sericitized, and
silicified. Secondary uranium minerals torbernite, metatorbnerite, zeunerite,
and metazeunerite occur in a copper- and tin-bearing vein, in the rhyolite
porphyry adjacent to the vein, in fault gouge, in tourmalinized intrusion
breccia, and in rhyolite and rhyolite porphyry adjacent to the breccia. The
vein, which contains the highest grade uranium, is 3 feet wide and contains
chalcocite, pyrite, arsenopyrite, and cassiterite. Elsewhere, the metazeunerite
occurs with numerous secondary copper minerals, cassiterite, tourmaline, and
iron oxides. Fluorite is reported present in some tin-bearing veins. Trites and
Thurston (1958) include a composite level and assay map of the
mine.
RADIOACTIVE MINERALS metatorbnerite; metazeunerite;
torbernite; zeunerite
HOST ROCK Intrusive: Tertiary rhyolite
dome
MAIN COMMODITIES Cu, Sn
OTHER COMMODITIES
Ag, Au, Mo, Pb, U
NBMG SAMPLE 2844, 2846
OLD MAP NO.
384
REFERENCES Thurston and Trites, 1954; Stugard,
Wyant, and Gude, 1952; Trites and Thurston, 1958; Thurston and Trites, 1952;
McKelvey, 1957; Smith and Gianella, 1942; Matson, 1948; Johnson, 1977; Bonham
and others, 1985; Mason and others, 1996; Garside, 1973; Thurston, 1949; Berry
and others, 1982, no. 12.
NOTES MRDS: M060272
NO. 569
NAME Mount
Tobin
COUNTY Pershing
LOCATION Sec. 1, T28N,
R39E
UTMN 4463800
UTME
455000
DISTRICT Mount Tobin
QUAD Needle Peak
7.5' (1990)
DEVELOPMENT Several short
adits.
RADIOACTIVITY Five to six times background in 1 m2 area;
70 ppm U3O8.
GEOLOGY Slightly anomalous radioactivity is
reported from a very small area of black, carbonaceous upper Paleozoic marine
shale.
HOST ROCK Sedimentary: Pennsylvanian Permian
shale
MAIN COMMODITIES Hg, U(?)
REFERENCES
Berridge and Wolverson (1982)
NOTES About 300 m south of the Mt
Tobin Mine; all workings are for mercury.
NO.
570
NAME Occurrence (T31N, R29E)
COUNTY
Pershing
LOCATION Sec. 2, T31N, R29E
UTMN
4494260
UTME 347220
DISTRICT Seven
Troughs
QUAD Juniper Canyon 7.5' (1982)
RADIOACTIVITY
Four samples of “ore” assayed between 20 to 140 ppm U
GEOLOGY
Anomalous radioactivity occurs in ill defined pods mostly along small
joints and zones of limonite staining in a Cretaceous leucogranite plutonic
mass. The radioactivity in within very light colored, altered leucogranite which
is close to copper stained rock. Radioactivity “ore” minerals noted are allanite
and zircon.
RADIOACTIVE MINERALS Anomalously radioactive
allanite and zircon
HOST ROCK Intrusive: Cretaceous
leucogranite
MAIN COMMODITIES Cu, U, Th
REFERENCES
Berry and others, 1982
NOTES
NO. 571
NAME Pinto
prospect
COUNTY Pershing
LOCATION Sec. 8,
T29N, R24E
UTMN 4475500
UTME
305300
QUAD Kumiva Peak 7.5' (1990)
DEVELOPMENT
Prospect pit.
GEOLOGY 5-foot thick limonite stained
quartz vein and float along a range-front fault paralleling a contact between
granodiorite and volcanic rocks. Fault can be traced 6 miles along
strike.
RADIOACTIVE MINERALS Anomalously radioactive
limonite(?)
HOST ROCK Intrusive/Volcanic: Cretaceous
granodiorite; Tertiary volcanic rocks
MAIN COMMODITIES
U
REFERENCES Mason and others, 1996
NOTES
MRDS: M242900; UTMs from MRDS.
NO.
572
NAME Poncho group (2 claims), Butch group (7 claims), Doris
claim
COUNTY Pershing
LOCATION N½ Sec. 10,
T26N, R24E
UTMN 4445600
UTME
306000
DISTRICT Nightingale
QUAD Tohakum Peak
NE 7.5' (1964)
DEVELOPMENT Several pits and
trenches.
RADIOACTIVITY Background = 0.03 mR/hr; High = 0.5
mR/hr. A select sample contained 0.055% eU3O8; another contained 0.19%
cU3O8.
GEOLOGY Autunite and uranophane are found along
fractures and bedding planes in shales, phyllites, and schists which occur as
roof pendants in a Cretaceous(?) granitic intrusive.
RADIOACTIVE
MINERALS Autunite, uranophane
HOST ROCK Metamorphic:
shales, phyllites, and schists
MAIN COMMODITIES U, W
OLD
MAP NO. 377
REFERENCES AEC Report 3728; Mason and
others, 1996; Garside, 1973; Berry and others, 1982.
NOTES
MRDS: M242701; Exact location uncertain; UTMs from near center of half section.
NO. 573
NAME Sage Hen
Springs, Uranium Lode claims
COUNTY Pershing
LOCATION
Secs. 7, T25N, R25E
UTMN 4435630
UTME
310530
DISTRICT Nightingale
QUAD Sage Hen
Spring 7.5' (1981)
DEVELOPMENT One 6-foot-deep
pit.
RADIOACTIVITY Background = 0.02 mR/hr; High = 1.5 mR/hr. A
sample contained 0.26% cU3O8.
GEOLOGY Uranophane(?) and
uraniferous hyaline opal are associated with intricate and complex,
limonite-filled, easterly trending fractures in a quartzite. High radioactivity
is present along a 2- to 3-foot zone. The quartzite is a roof pendant in
granodiorite, and a pegmatite dike crops out a few feet away.
RADIOACTIVE
MINERALS uraniferous hyaline opal; uranophane(?)
HOST ROCK
Sedimentary: quartzite
MAIN COMMODITIES U
OLD MAP
NO. 375
REFERENCES AEC Report 3720; Johnson, 1977;
Bonham and others, 1985; Mason and others, 1996; Garside, 1973; Castor and
Ferdock, 2004; Berry and others, 1982.
NOTES MRDS: M060211
NO. 574
NAME Scossa
mining district
COUNTY Pershing
LOCATION Sec.
10(?), T33N, R30E; Exact location uncertain
UTMN
4511000
UTME 366000
DISTRICT
Scossa
QUAD Scossa 7.5' (1981)
RADIOACTIVITY
Background = 0.02 mR/hr; High = 0.05 mR/hr
GEOLOGY Very minor
radioactivity has been reported in sandstone from the Scossa mining
district.
HOST ROCK Sedimentary: sandstone
MAIN
COMMODITIES U(?)
OLD MAP NO.
383
REFERENCES AEC Report 3735; Garside, 1973.
NOTES
Exact location uncertain; UTMs from near center of Sec. 10.
NO. 575
NAME Stalin's Present
prospect
OTHER NAME Rocky Canyon prospect; Nevada Uranium
Company; Bottomley-Rogers uranium prospect
COUNTY
Pershing
LOCATION Sec. 6, T29N, R34E
UTMN
4473320
UTME 398340
DISTRICT Rye
Patch
QUAD Congress Canyon 7.5' (1987)
DEVELOPMENT
A small pit and trench, a 63-foot adit, and a 47-foot
winze.
RADIOACTIVITY Select samples contain up to 0.7% eU3O8,
and a channel sample across the vein contained 0.07% cU3O8. Another vein sample
contained 533 ppm U3O8.
GEOLOGY Radioactivity occurs in and
along a 4- to 10-inch-wide zone in a light-gray igneous rock. This rock is part
of the Triassic Rochester Rhyolite, which is predominantly ash-flow tuffs. The
mineralized structure trends north and dips steeply to the east. This zone is a
dark green vein composed of hornblende, diopside, chlorite, biotite, epidote,
quartz, dark calcite, pitchblende, and gummite. The intrusive contact with the
Rocky Canyon granodiorite stock is about 0.5 mi away.
RADIOACTIVE
MINERALS gummite; pitchblende
HOST ROCK Volcanic:
Triassic ash-flow tuff
MAIN COMMODITIES U
OLD MAP NO.
385
REFERENCES Staatz, 1954; Anderson and others, 1952;
King, Moore, and Hinrichs, 1952; Taylor, 1952, p. 236; McKelvey, 1957; Staatz,
1951; Johnson, 1977; Bonham and others, 1985; Mason and others, 1996; Garside,
1973; Gallagher, 1952, 1953; Kral, 1951; Castor and Ferdock, 2004; Berry and
others, 1982, no. 13.
NOTES MRDS: M060345
NO. 576
NAME Star Tungsten
Mine
COUNTY Pershing
LOCATION Sec. 25, T25N,
R25E
UTMN 4431000
UTME
319500
DISTRICT Juniper Range
QUAD Blue Wing
Spring 7.5' (1981)
DEVELOPMENT Open pits and bulldozer
cuts
RADIOACTIVITY High, 350 cps; up to 335 ppm
U3O8.
GEOLOGY Anomalous radioactivity is associated with oxide
copper minerals (including malachite and chrysocolla) in tungsten skarn. The
skarn is developed in a roof pendant of Triassic Auld Lang Syne metasedimentary
rocks in a Mesozoic granodiorite.
HOST ROCK Sedimentary:
Triassic-Jurassic Auld Lang Syne Group
MAIN COMMODITIES W,
Cu
OTHER COMMODITIES U
REFERENCES Berry and
others, 1982; Stager and Tingley, 1985
NOTES UTMs from Stager
and Tingley, 1985.
NO. 577
NAME
Teacup claims (Nos. 1-32)
COUNTY
Pershing
LOCATION Sec. 24(?), T28N, R29E; Exact location
uncertain
UTMN 4460300
UTME
357800
DISTRICT Velvet
QUAD Trinity Pass 7.5'
(1981)
DEVELOPMENT Location pits.
RADIOACTIVITY
Background = 0.015 mR/hr; High= 0.030 mR/hr
GEOLOGY Very
slight radioactivity is reported in volcanic rocks.
HOST ROCK
Volcanic: volcanic rocks
MAIN COMMODITIES U(?)
OLD MAP
NO. 388
REFERENCES AEC Report 3721; Garside,
1973.
NOTES Exact location unknown; UTMs from near middle of
Sec. 24.
NO. 578
NAME Two
Chuckers group (Nos. 1-3)
OTHER NAME Two Chukkars; Two
Chukkers; Blue Star; D. D. J.
COUNTY
Pershing
LOCATION Sec. 18(?), T25N, R25E
UTMN
4434580
UTME 310520
DISTRICT
Nightingale
QUAD Sage Hen Spring 7.5'
(1981)
RADIOACTIVITY Background = 0.02 mR/hr; High = 0.5 mR/hr.
Select samples contain 0.23% eU3O8 (0.279 cU3O8). A single 30x30 cm spot was 50
times background, and a 1.2 m long(?) chip sample contained 386 ppm
U3O8.
GEOLOGY A yellow uranium mineral was reported as fracture
coatings in a basalt(?) dike which cuts granitic rocks. Berry and others (1982)
did not observe uranium minerals but reported radioactivity to be associated
with iron and copper staining and a quartz vein in argillized
granodiorite.
RADIOACTIVE MINERALS yellow uranium
mineral
HOST ROCK Intrusive: basalt(?) dike or
granodiorite
MAIN COMMODITIES U
OTHER COMMODITIES
Cu, Fe, W
OLD MAP NO. 374
REFERENCES
AEC Report 3723; Johnson, 1977; Bonham and others, 1985; Mason and others, 1996;
Garside, 1973; Berry and others, 1982;
NOTES MRDS: M060212
NO. 579
NAME Unnamed
airborne anomaly
COUNTY Pershing
LOCATION Sec.
7 (oR21 oR28), T30N, R24E
UTMN 4482827
UTME
305569
DISTRICT Hooker
QUAD Kumiva Peak 7.5'
(1990)
RADIOACTIVITY Background = 0.01 mR/hr; High = 0.03
mR/hr. Up to 5 times background is reported; a sample contained 49 ppm
U3O8.
GEOLOGY Slightly anomalous radioactivity is associated
with aplite, pegmatite, and leucogranite dikes in granodiorite
HOST
ROCK Intrusive: granite
MAIN COMMODITIES U
OLD
MAP NO. 382
REFERENCES AEC Report 3724; Garside,
1973; Berry and others, 1982, no. 10.
NOTES Exact location
uncertain The location of Sec. 22-28 boundary is 4480000N, 306000E; UTM location
from Berry and others (1982), used herein, falls in Sec. 7.
NO. 580
NAME Uranium prospect
no. 1
COUNTY Pershing
LOCATION Sec. 15, T28N,
R24E
UTMN 4462750
UTME 306100
QUAD
Purgatory Peak 7.5' (1990)
DEVELOPMENT Minor trenching
and bulldozing in 40' by 100' area
GEOLOGY Three 2-foot thick
aplite dikes within 400 lateral feet in altered granodiorite.
RADIOACTIVE
MINERALS unknown uranium mineral
HOST ROCK
Intrusive: granodiorite
MAIN COMMODITIES U
REFERENCES
Mason and others, 1996
NOTES MRDS: M242906; UTMs from
MRDS.
NO. 581
NAME
Uranium prospect no. 2
COUNTY Pershing
LOCATION
Sec. 34, T29N, R24E
UTMN 4467200
UTME
307200
QUAD Purgatory Peak 7.5' (1990)
DEVELOPMENT
Two 150-foot by 2-foot deep trenches and one prospect
pit.
GEOLOGY Generally easterly-trending Iron oxide stained
contact between Cretaceous granodiorite and Tertiary rhyolite.
RADIOACTIVE
MINERALS unknown uranium mineral
HOST ROCK
Intrusive/Volcanic: Cretaceous granodiorite; Tertiary rhyolite
MAIN
COMMODITIES U
REFERENCES Mason and others,
1996
NOTES MRDS: M242907; UTMs from MRDS.
NO. 582
NAME Vernon and
Snowstorm claims
OTHER NAME Vernon Mine; Scheelite; Sure Thing;
Dead Strike; Terry claim
COUNTY Pershing
LOCATION
Sec. 2, T29N, R28E
UTMN 4475140
UTME
345820
DISTRICT Seven Troughs
QUAD Seven
Troughs 7.5' (1981)
OTHER PRODUCTION 1953-1956: Vernon mine:
122 units WO3
DEVELOPMENT Prospect pit and a 60- to 70-foot
inclined shaft.
RADIOACTIVITY Background = 0.02 mR/hr; High =
0.04 mR/hr. A sample reportedly from this prospect submitted to the Atomic
Energy Commission contained 1.026% cU3O8 and 2.6% WO3. Berry and others (1982)
reported only 9 ppm U3O8 from a granitic dike.
GEOLOGY Slightly
anomalous radioactivity is reportedly present along an east-west shear zone
which dips 75ºN. The shear is in limestone near a granite contact. Scheelite,
quartz, iron oxides, and molybdenite are reported from skarn mineralization.
Some radioactivity is associated with a pegmatite dike.
HOST ROCK
Sedimentary: limestone
MAIN COMMODITIES W
OTHER
COMMODITIES Au, Mo, U
NBMG SAMPLE 2822
OLD MAP
NO. 386
REFERENCES AEC Report 3722; Stager and
Tingley, 1985; Johnson, 1977; Bonham and others, 1985; Mason and others, 1996;
Garside, 1973; Berry and others, 1982, no. 14.
NOTES MRDS:
M242816
NO. 583
NAME Hill
and Burgner prospect
COUNTY Storey
LOCATION
Sec. 33, T19N, R21E
UTMN 4372000
UTME
273000
DISTRICT Castle Peak
QUAD Steamboat
7.5' (1994)
DEVELOPMENT About 400 feet of bulldozer
cuts.
RADIOACTIVITY Background = 0.02 mR/hr; High = 0.7
mR/hr
GEOLOGY Anomalous radioactivity occurs along nearly
vertical fractures which strike N10ºE. The radioactivity occurs over a wide area
in an opalized tuff. Cinnabar and iron oxides were noted. This locality is north
of the Washington Hill mercury mine.
RADIOACTIVE MINERALS
Anomalously radioactive opalized zones
HOST ROCK Volcanic:
opalized tuff
MAIN COMMODITIES Hg, U(?)
OLD MAP NO.
392
REFERENCES AEC Report 3756; Garside,
1973.
NOTES Exact location unknown; UTMs from near middle of
Sec. 33.
NO. 584
NAME
Area of anomalous radioactivity
COUNTY
Washoe
LOCATION Secs. 21, 22, T44N, R22E
UTMN
4621500
UTME 292000
QUAD Badger Mountain NW
7.5' (1966); Massacre Lake 7.5' (1982)
RADIOACTIVITY Aerial
survey: Gamma-ray flux anomaly 3 standard deviations above mean background
level.
GEOLOGY Tertiary basalt of Catnip Creek.
HOST
ROCK Volcanic: Tertiary basalt of Catnip Creek.
MAIN
COMMODITIES U(?)
REFERENCES Bergquist and others,
1988
NOTES In center of Massacre Rim WSA
NO. 585
NAME Armstrong
claims
OTHER NAME Penney No. 6 and No. 10
claims.
COUNTY Washoe
LOCATION NW¼ SW¼ Sec.
31, (Penny Claims) and SE¼ SW¼ Sec. 32, (Armstrong Claims) T24N,
R21E
UTMN 4420346
UTME
273082
DISTRICT Pyramid
QUAD Tule Peak 7.5'
(1980)
U PRODUCTION 1957: 21 tons of ore averaging 0.33% U3O8
(138 lbs. U3O8)
DEVELOPMENT Bulldozer trenching, a 30- to
40-foot shaft, and about 250 feet of underground workings. Assays generally do
not exceed 0.03% U3O8, but are locally over 2.7% U3O8.
RADIOACTIVITY
Background = 0.013 mR/hr; High = 4.2 mR/hr. A ssays of over 2.7% U3O8 are
reported from mineralized fractures up to 6 inches wide. Assays across 5- to
6-foot widths seldom contain over 0.03% U3O8. Cupp and others (1977a) report
assays of 2-184 ppm U3O8 in and around the mine.
GEOLOGY
Uranium mineralization occurs in and adjacent to a diabase dike cutting a
rhyolitic ash- flow tuff of the Oligocene tuff of Chimney Spring. The diabase
dike strikes N30°E and has a vertical dip. Secondary yellow uranium minerals
(uranophane) occur in the diabase dike and in fractures in the welded tuff
adjacent to the dike. The tuff is normally brick red but it has been locally
bleached to a greenish-white along fractures. Quartz crystals in the tuff are
very black in mineralized areas, probably due to radiation damage. The highest
surface radioactivity usually occurs about 3 feet north of the
dike.
RADIOACTIVE MINERALS uranophane
HOST ROCK
Intrusive/Volcanic: andesite dike; Oligocene tuff of Chimney
Springs
MAIN COMMODITIES U
OLD MAP NO.
403
REFERENCES AEC Report 3777; Bonham and Papke, 1969; Cupp
and others. 1977a; Mason and others, 1996; Tingley, 1990; Quade and others,
1990a,b; Hurley and others, 1982; Faulds and others, 2003; Garside, 1973; 1979;
U.S. Bureau of Mines Yearbook, 1957
NOTES MRDS 231077; UTMs
from Tingley (1990) and Quade and others (1990a,b).
NO. 586
NAME Bastain
prospects
COUNTY Washoe
LOCATION NE¼ Sec. 19,
T23N, R18E
UTMN 4414950
UTME
243460
DISTRICT Stateline Peak
QUAD Granite
Peak 7.5' (1980)
DEVELOPMENT Two prospect pits(?). Bulldozer
cuts and trenches, and 7.6 m drill hole.
RADIOACTIVITY
Composite trench samples contain 100-500 ppm cU3O8. NBMG sample 6099 assayed 480
ppm U and 17 ppm Th. 2 select samples assayed 0.04 and 0.15%
U3O8.
GEOLOGY Autunite and meta-autunite are associated with
carbonized wood at the base of an Oligocene rhyolitic ash-flow tuff. The tuff
was deposited in a paleovalley on granodiorite. Some of the wood is completely
encircled or partially replaced by autunite. Autunite is disseminated in and
encloses and replaces carbonized wood fragments which occur near the base of an
ash-flow tuff overlying granodiorite. A paleosol developed on the granodiorite
is also anomalous in uranium.
RADIOACTIVE MINERALS Autunite;
meta-autunite
HOST ROCK Volcanic: carbonized fossil wood at the
base of an Oligocene ash-flow tuff
MAIN COMMODITIES
U
NBMG SAMPLE 6099
OLD MAP NO.
424
REFERENCES McJannet, 1957; Van Couvering, 1962; Cupp and
others. 1977a; Hurley and others, 1982; Mason and others, 1996; Garside, 1973;
1979; Castor and Ferdock, 2004; Cinque, 1979.
NOTES MRDS
M231117
NO. 587
NAME Bing
group (Nos. 1-11)
OTHER NAME Bing claims
COUNTY
Washoe
LOCATION Sec. 28(?), T23N, R21E
UTMN
4412330
UTME 274960
DISTRICT
Pyramid
QUAD Fraser Flat 7.5' (1980)
DEVELOPMENT
Several prospect pits.
RADIOACTIVITY Background = 0.05
mR/hr; High = 15.0 mR/hr. Sample contain 0.016 to 2.13% eU3O8.
GEOLOGY
Iron-oxides, autunite(? ), torbernite(? ) and unidentified secondary
uranium minerals occur in a northwesterly-trending brecciated shear zone in
Oligocene ash-flow tuff. The contact of the tuff with Mesozoic granodiorite is
nearby.
RADIOACTIVE MINERALS Autunite(? ); torbernite(? );
unidentified secondary uranium minerals
HOST ROCK Volcanic:
Oligocene ash-flow tuffs
MAIN COMMODITIES U
OLD MAP
NO. 408
REFERENCES AEC Report 3779; Bonham and
Papke, 1969; Garside and others, 2003; Tingley and others, 1999; Hurley and
others, 1982; Garside, 1973.
NOTES MRDS 231069; Location
uncertain, UTMs from center of section. Could not be located in 1979; possibly
in Sec. 34 or 27 (Hurley and others, 1982).
NO.
588
NAME Black Hawk claims (Nos. 1-9)
OTHER
NAME Blackhawk; Black Hawk prospect
COUNTY
Washoe
LOCATION Sec. 8 or 16, T25N, R18E; Exact location
uncertain
UTMN 4436370
UTME
247200
DISTRICT State Line
QUAD State Line
Peak 7.5' (1981)
DEVELOPMENT Bulldozer cuts, pits, and
trenches.
RADIOACTIVITY Background = 0.05 mR/hr; High = 0.50
mR/hr
GEOLOGY Torbernite, autunite, and carnotite(?) occur in a
fault that strikes N65ºW, and dips 80ºNE, and which cuts pre-Jurassic
metamorphic rocks, near a contact with a granitic intrusive. Ilmenite(?) may be
present. This area is reportedly barely detectable by airborne scintillometer.
Several magnetite bodies along veins in metavolcanic rocks are reportedly
nearby.
RADIOACTIVE MINERALS Autunite; carnotite(?);
torbernite
HOST ROCK Metamorphic: pre-Jurassic metamorphic
rocks
MAIN COMMODITIES Fe, U
OLD MAP NO.
432
REFERENCES AEC Report 3769; Bonham and Papke, 1969, p. 99;
Shaw, Reeves, and Kral, 1962, p. 118; Mason and others, 1996; Garside, 1973;
Castor and Ferdock, 2004.
NOTES MRDS: M242915
NO. 589
NAME Buckhorn
mine
OTHER NAME Antelope Range (Peterson Mountain) area;
Hallelujah Junction area.
COUNTY Washoe
LOCATION
SE¼ NE¼ Sec. 31, T23N, R18E; northeast of Hallelujah Junction on the
California-Nevada boundary.
UTMN 4411520
UTME
243320
DISTRICT Stateline Peak
QUAD Granite
Peak 7.5' (1980)
U PRODUCTION 1955-1956: 420 tons of ore
containing 0.2% U3O8; Cupp and others (1977a) report 317 tons of ore at a grade
of 0.24% U3O8 (1,490 lbs. U3O8).
U RESOURCES/ RESERVES Moderate
tonnage of material averaging somewhat less than 0.2% U3O8
DEVELOPMENT
Two (caved) adits, two shafts, extensive bulldozer cuts and trenches,
drill holes, and numerous pits and trenches.
RADIOACTIVITY
Background = 0.01 mR/hr; High = 0.50 mR/hr. Grab samples contained up to 0.51%
eU3O8. The highest grade select sample contained 2.35% eU3O8. Cupp and others
(1977a) report assays of 5-480 ppm U3O8.
GEOLOGY Gummite,
uranophane, and autunite occur as small disseminated grains in Oligocene
rhyolitic ash-flow tuff, which here overlies tuffaceous lacustrine sedimentary
rocks. Gummite was reported to be the chief uranium mineral present; however, it
is now known to be a mixture of secondary uranium minerals. Mineralization is
apparently associated with narrow, iron-stained, silicified veinlets. The
principal zone of mineralization is at least 43 m long by 27 m wide, and uranium
minerals occur in northeast-trending fractures in a biotite-deficient rhyolite
tuff unit. A second mineralized zone strikes northwest and is about 37 m long by
6 m wide. It is found in a biotite-rich rhyolite welded tuff unit, which lies
below the biotite-poor unit. Inability of the mine operators to keep the ore
grade at or above 0.2% U3O8 is reported to be the reason for cessation of mining
on the property. Apparently a moderate tonnage of material averaging somewhat
less than 0.2% U3O8 is still present at the Buckhorn mine.
RADIOACTIVE
MINERALS Autunite; gummite; meta-autunite; uranophane
HOST
ROCK Volcanic: Oligocene rhyolitic ash-flow tuffs
MAIN
COMMODITIES U
OLD MAP NO. 426
REFERENCES
Hetland, 1955; Sharp, 1956; Walker, Lovering, and Stephens, 1956, p. 34;
Bonham and Papke, 1969; Troxel, Stinson, and Chesterman, 1957, p. 671 and 672;
McJannet, 1957; Van Couvering, 1962; AEC Report 1152 (California); Cupp and
others. 1977a; Hurley and others, 1982; Mason and others, 1996; Garside, 1973;
1979; Castor and Ferdock, 2004; Basinski, 1978: Cinque, 1979.
NOTES
MRDS M231115; UTMs from center of section
NO. 590
NAME Crescent
claims
OTHER NAME Seven Lakes prospect; Red Rock
prospect.
COUNTY Washoe
LOCATION SW¼ NW¼ Sec.
27, T24N, R18E
UTMN 4422796
UTME
247202
DISTRICT Stateline Peak
QUAD Dogskin
Mountain 7.5'x15' (1979)
DEVELOPMENT Several pits and
trenches.
RADIOACTIVITY Background = 0.01 mR/hr; High = 0.4
mR/hr. A select sample ran 0.35% eU3O8 and a 5-inch horizontal chip contained
0.06 eU3O8. Additional samples contained up to 0.135 %
GEOLOGY
An unidentified yellow uranium mineral was reported from along a fault in
Oligocene ash-flow tuff, probably the tuff of Dogskin Mountain. Anomalous
radioactivity (3- and 14-times background) is limited to clay-altered and
iron-stained fractures.
RADIOACTIVE MINERALS unidentified
yellow uranium mineral
HOST ROCK Volcanic: Tertiary ash-flow
tuff
MAIN COMMODITIES Rare Earths, Th, U
OLD MAP NO.
419
REFERENCES AEC Reports 3772, 3791; Bonham and Papke,
1969; Cupp and others. 1977a; Henry and others, 2004; Hurley and others, 1982;
Tingley and others, 1999; Mason and others, 1996; Garside, 1973; Hurley and
others, 1982, no. 2.
NOTES MRDS M231082
NO. 591
NAME Daisy Mae
claims
OTHER NAME Greenstone prospect
COUNTY
Washoe
LOCATION NE¼ SW¼ Sec. 27, T22N, R20E
UTMN
4402822
UTME 266592
DISTRICT
McClellan
QUAD Griffith Canyon 7.5'
(1980)
DEVELOPMENT A 45-foot adit, several cuts and
trenches.
RADIOACTIVITY Background = 0.04 mR/hr; High = 0.15
mR/hr. A 10-foot chip sample contained 0.04% eU3O8; Hurley and others (1982)
report analyses up to 267 ppm U3O8.
GEOLOGY Anomalous
radioactivity and autunite(?) have been reported from the basal contact of late
Miocene fluvial sedimentary rocks and underlying Oligocene tuff of Dogskin
Mountain. A light green, bentonitic zone in the sedimentary rocks has the
highest radioactivity. Radioactivity is a maximum of 5 times
background.
RADIOACTIVE MINERALS Autunite(?)
HOST
ROCK Sedimentary/Volcanic: late Miocene fluvial sedimentary rocks;
Oligocene tuff of Dogskin Mountain
MAIN COMMODITIES U
OLD
MAP NO. 429
REFERENCES AEC Report 3765; Holmes,
1972; Cupp and others. 1977a; Hurley and others, 1982; Tingley, 1990; Quade and
others, 1990a,b; Garside, 1973; 1979.
NOTES
NO. 592
NAME DeLongchamps
prospects
OTHER NAME Red Bluff Nos. 1-7; 10 and 11; Rainbow No.
8 Fraction; Red Bluff mine.
COUNTY Washoe
LOCATION
N½ Sec. 1, T23N, R20E
UTMN 4419510
UTME
270250
DISTRICT Pyramid
QUAD Tule Peak 7.5'
(1980)
U PRODUCTION 1955-1961: Small tonnages of ore shipped;
1966: Two carloads of uranium ore were shipped. 200 tons of ore averaging 0.23%
U3O8 (911 lbs. U3O8)
DEVELOPMENT Numerous pits and trenches,
and over 300 feet of underground workings.
RADIOACTIVITY
Background = 0.04 mR/hr; High = 5.0 mR/hr. A ssays as high as 15% U3O8 were
obtained on ore high in hematite.
GEOLOGY Uranium
mineralization occurs in and adjacent to an andesite dike which intrudes the
Oligocene tuff of Chimney Spring. A fault is present at one side of the dike,
and both the dike and fault trend N35 to 70ºE and dip 65 to 70ºNW. The uranium
minerals occur in pods, stringers, and encrustations along fractures in both the
dike rock and the welded tuff. Radioactivity can be detected for up to 500 feet
along the structure. According to Brooks (1956) the uranium occurs as autunite,
sabugalite, phosphuranylite, clevite(?), and as uraniferous hematite and opal.
The higher grade ore occurs in lenticular shoots up to 12 feet long and 4 feet
wide within the welded tuff in the footwall of the fault between the dike and
the welded tuff. Bleaching and local silicification of the welded tuff are
associated with these shoots. Hematite, manganese oxides, and minor opal are
present with the ore. Quartz crystals in the welded tuff are very smoky,
probably due to radiation damage. Meta-autunite occurs as scaly aggregates in
fractures and cavities with sabugalite, phosphuranylite, uraninite,
uranospinite, and uranophane.
RADIOACTIVE MINERALS Autunite,
clevite(?); meta-autunite; phosphuranylite; sabugalite; uraniferous hematite;
uraniferous opal; uraninite; uranophane; uranospinite
HOST ROCK
Intrusive/Volcanic: andesite dike; Oligocene tuff of Painted Hills
MAIN
COMMODITIES U
OLD MAP NO. 406A
REFERENCES
AEC Report 3780; Bonham and Papke, 1969; Brooks, 1956; Smith, 1956;
Butler, 1958, p. 123; McJannet, 1957;U.S. Bur. Mines Minerals Yearbooks 1956,
1959, 1966; Holmes, 1972; Cupp and others. 1977a; Hurley and others, 1982; Mason
and others, 1996; Tingley, 1990; Quade and others, 1990a,b; Castor and Henry,
2000; U.S. Bureau of Mines, 1995; Garside, 1973; 1979; Castor and others, 1996;
Castor and Ferdock, 2004.
NOTES MRDS 231103; MASMILS
0320310120; UTMs from Tingley (1990) and Quade and others (1990a,b); UTMs from
MASMILS; property overlapped in part by Red Bluff claims.
NO. 593
NAME Delta
mine
OTHER NAME Delta claims (6 claims); Elmer H. Carlson
property
COUNTY Washoe
LOCATION Secs. 5(?) and
8, T23N, R18E
UTMN 4418440
UTME
244400
DISTRICT Stateline Peak
QUAD Dogskin
Mountain 7.5'x15' (1979)
DEVELOPMENT Bulldozer
trench.
RADIOACTIVITY Aplite sample: 1.457% U3O8 chemical
assay.
GEOLOGY Sample from weathered aplite with white mica and
unnamed uranium mineral. Aplite intrudes Cretaceous
granodiorite.
RADIOACTIVE MINERALS unnamed uranium
mineral
HOST ROCK Intrusive: Cretaceous granodiorite
MAIN
COMMODITIES U
REFERENCES NBMG U assay, 1956; Bonham
and Papke, 1969
NOTES Exact location uncertain and estimated
from Washoe County claim location records. UTMs from prospect symbol on map.
NO. 594
NAME Divide
claims (Nos. 0-9)
COUNTY Washoe
LOCATION SW¼
Sec. 26, T24N, R19E (projected). On the crest of a ridge about 1 mile west of
Peak 7464 on Dogskin Mountain.
UTMN 4421960
UTME
258680
DISTRICT Stateline Peak
QUAD
Dogskin Mountain 7.5'x15' (1979)
U PRODUCTION A small amount of
ore may have been produced.
DEVELOPMENT A large cut and
numerous bulldozer trenches.
RADIOACTIVITY Background = 0.017
mR/hr; High = 0.43 mR/hr. A ssays ran as high as 0.30% cU3O8 for the charcoal
material. Other samples contain 0.37%cU3O8.
GEOLOGY Autunite
and torbernite(?) occur as specks and fine disseminations in charcoal and
bentonitic ash at the base of the Oligocene Nine Hill Tuff. The area of uranium
mineralization is about 215 by 90 m, and is present along one edge of an
erosional remnant of the tuff, which here overlies weathered granodiorite. The
mineralized zone is up to 20 feet thick, as exposed in a large cut, and includes
volcanic ash with charcoal stringers, and granodiorite boulders up to 4.5 m in
diameter.
RADIOACTIVE MINERALS Autunite;
torbernite(?)
HOST ROCK Volcanic: Oligocene Nine Hill
Tuff
MAIN COMMODITIES U
OLD MAP NO.
411
REFERENCES AEC Report 3767; Bonham and Papke, 1969; Holmes,
1972; Mason and others, 1996; Hurley and others, 1982; Bonham and Papke, 1969;
Garside, 1973.
NOTES MRDS M231087
NO. 595
NAME Domestic water
well
COUNTY Washoe
LOCATION NW¼ NW¼ Sec. 26,
T23N, R18E
UTMN 4413500
UTME
248500
DISTRICT Stateline Peak
QUAD Granite
Peak 7.5' (1980)
DEVELOPMENT Domestic
well
RADIOACTIVITY 118 ppb U in water.
GEOLOGY
Water well in Cretaceous quartz monzonite
RADIOACTIVE MINERALS
uranium dissolved in water
HOST ROCK Intrusive(?): Water well
in Cretaceous quartz monzonite: water
MAIN COMMODITIES
U
REFERENCES Fricke, 1983; Garside, 1987
NOTES
Exact location uncertain; UTMs from near center of quarter-quarter section.
NO. 596
NAME Double Jack
claims (Nos. 19, 23
COUNTY Washoe
LOCATION SW¼
Sec. 9 and NW¼ Sec. 16, T23N, R20E
UTMN 4416490
UTME
265360
DISTRICT Dogskin Mountain
QUAD
Fraser Flat 7.5' (1980)
DEVELOPMENT Several bulldozer cuts and
prospect pits and exploration roads. Part of group of 38 lode and 23 placer
claims kept current between 1969-1985
RADIOACTIVITY
Scintillation counter readings: larger dikes - 160-180 cps; granitic rocks -
60-70 cps. Maximum: 35 ppm U. NBMG sample 5861 assayed 34 ppm U and 19 ppm Th
and sample 5862 assayed 35 ppm U and 8 ppm Th.
GEOLOGY Aplite
and pegmatite veins and dikes in foliated granitic rocks. Veins and dikes range
from several cm up to 1 meter thick. Aplite and pegmatite consists of quartz and
feldspar with minor biotite and tourmaline and occasional copper
staining.
HOST ROCK Intrusive: aplite and pegmatite veins and
dikes
MAIN COMMODITIES U
NBMG SAMPLE 5860,
5861
REFERENCES D. A. Davis, unpub. data, 1998; Garside and
others, 2003; Tingley and others, 1999; Garside, 1973.
NOTES
NO. 597
NAME Garrett
prospect
COUNTY Washoe
LOCATION SW¼ SE¼ Sec.
36, T24N, R20E; About 1,500 feet northeast of the DeLongchamps
prospects
UTMN 4420023
UTME
270458
DISTRICT Pyramid
QUAD Tule Peak 7.5'
(1980)
DEVELOPMENT Several trenches.
RADIOACTIVITY
Cupp and others (1977a) report assays of 6-139 ppm with one analysis of
1138 ppm U3O8
GEOLOGY A zone of high radioactivity occurs along
the foot wall of a diabase dike which intrudes a tuff of the Oligocene tuff of
Chimney Springs. Weeksite tentatively identified as scaly yellow aggregates in
fractures and cavities.
RADIOACTIVE MINERALS
weeksite
HOST ROCK Intrusive/Volcanic: andesite dike; Oligocene
tuff of Chimney Springs
MAIN COMMODITIES U
OLD MAP
NO. 404
REFERENCES Brooks, 1956; Cupp and others.
1977a; Mason and others, 1996; Hurley and others, 1982; Tingley, 1990; Quade and
others, 1990a,b; Garside, 1973; Castor and others, 1996; Castor and Ferdock,
2004.
NOTES MRDS 231090
NO.
598
NAME Go-Getter and Pup claims
COUNTY
Washoe
LOCATION NE¼ SE¼ Sec. 29 or near the corner of
Secs. 27, 28, 33, and 34, T24N, R19E (projected).
UTMN
4422030
UTME 255180
DISTRICT Stateline
Peak
QUAD Dogskin Mountain 7.5'x15'
(1979)
DEVELOPMENT Several bulldozer
cuts.
RADIOACTIVITY Background = 0.02 mR/hr; High = 0.045
mR/hr. Chip samples along the mineralized bed contain 0.038 to 0.081%
eU3O8.
GEOLOGY Uranium mineralization occurs at the base of
Oligocene ash-flow tuff for a distance of 75 feet along the strike. Autunite(?)
is reported. A zone of intercalated clays, tuffs, decomposed granodiorite, and
carbonaceous material lies below the tuff and above the granodiorite. This zone
may be up to 10 feet thick, and contains most of the uranium
mineralization.
RADIOACTIVE MINERALS Autunite(?)
HOST
ROCK Volcanic: Oligocene ash-flow tuffs
MAIN COMMODITIES
U
OLD MAP NO. 414
REFERENCES AEC Report
3776; Bonham and Papke, 1969; Cupp and others. 1977a; Tingley, 1990; Quade and
others, 1990a,b; Mason and others, 1996; Garside, 1973; 1979.
NOTES
MRDS M231091; UTMs from Tingley (1990) and Quade and others
(1990a,b).
NO. 599
NAME
Golden Eagle, Red Eagle claims
COUNTY Washoe
LOCATION
NE¼ SE¼ Sec. 22, T24N, R19E (projected). Along a jeep
road.
UTMN 4423430
UTME
258320
DISTRICT Stateline Peak
QUAD Dogskin
Mountain 7.5'x15' (1979)
DEVELOPMENT One bulldozer
cut.
RADIOACTIVITY Background = 0.033 mR/hr; High = 0.06
mR/hr
GEOLOGY Very slightly anomalous radioactivity is
concentrated in small faults and in fractures in Oligocene ash-flow tuff. The
higher radioactivity is associated with heavy coatings of iron and manganese
oxides along the fractures.
RADIOACTIVE MINERALS Anomalously
radioactive iron and manganese oxides
HOST ROCK Volcanic:
Oligocene ash-flow tuffs
MAIN COMMODITIES U
OLD MAP
NO. 412
REFERENCES Tingley, 1990; Quade and others,
1990a,b; Mason and others, 1996; Garside, 1973; 1979; Hurley and others,
1982.
NOTES MRDS M231092; Location taken from Quade and others,
1990a,b. Could not be located by Hurley and others (1982).
NO. 600
NAME Good Luck claims
(Nos. 1-8)
COUNTY Washoe
LOCATION NW¼ Sec. 20,
T21N, R20E
UTMN 4395070
UTME
263010
DISTRICT McClellan
QUAD Reno NE 7.5'
(1982)
DEVELOPMENT Two small pits.
RADIOACTIVITY
Background = 0.035 mR/hr; High = 0.13 mR/hr. Selected samples contain up
to 0.31% eU3O8 (0.353 cU3O8). One-foot channel samples assayed 0.01%
eU3O8.
GEOLOGY Abnormal radioactivity and a non-fluorescent
yellow uranium mineral are present sporadically over an area 300 feet by 1,000
feet. The uranium mineralization is localized along north-trending, steeply
dipping breccia zones, fractures, and altered areas in the Oligocene ash-flow
tuff, which is highly silicified and iron-stained adjacent to the mineralized
fractures. High radioactivity is also associated with fibrous volcanic
glass.
RADIOACTIVE MINERALS non-fluorescent yellow uranium
mineral
HOST ROCK Volcanic: Oligocene ash-flow tuff
MAIN
COMMODITIES U
OLD MAP NO. 431
REFERENCES
AEC Report 3763; Finch, 1967; Bonham and Papke, 1969; Cupp and others.
1977a; Good Luck Prospect, 1970a, 1970b; Tingley, 1990; Quade and others,
1990a,b; Garside, 1973.
NOTES Bonham and Papke (1969, Plate 2)
showed this property in SE¼ Sec. 17, T21N, R20E, but did not describe it. Hurley
and others (1982) were unable to locate it. The original description (AEC
PRR3763 reported it to be in Sec. 3.
NO.
601
NAME Granite Mountain prospect
OTHER NAME
Granite Peak.
COUNTY Washoe
LOCATION Sec.
27(?), T23N, R18E; Exact location unknown
UTMN
4412880
UTME 247580
DISTRICT Stateline
Peak
QUAD Granite Peak 7.5' (1980)
GEOLOGY A
uranium- and thorium-bearing pegmatite is reported from this area. The prospect
could not be located in 1970.
RADIOACTIVE MINERALS thorium;
uranium
HOST ROCK Intrusive: pegmatite dike
MAIN
COMMODITIES Th, U
OLD MAP NO.
427
REFERENCES Schilling, 1963; Bonham and Papke, 1969;
Garside, 1973.
NOTES MRDS M231114; UTMs from center of section
NO. 602
NAME Great
Boiling Spring Park
OTHER NAME Gerlach Hot
Springs
COUNTY Washoe
LOCATION NW¼ Sec. 15,
T32N, R23E
UTMN 4503710
UTME
300050
QUAD Gerlach 7.5' (1990)
RADIOACTIVITY
Three water samples contain 0.3 ppb cU3O8; carbonaceous sample assayed 1 ppm
cU3O8; siliceous mud sample assayed 4 ppm cU3O8.
GEOLOGY
Uranium is present in Holocene dark gray, siliceous sinter formed by
precipitation around hot spring pool, and in carbonaceous dark gray to black,
soft silty, clay sediments.
RADIOACTIVE MINERALS Anomalously
radioactive carbonaceous material and sinter
HOST ROCK
Sedimentary: spring deposits. (SPRING)
MAIN COMMODITIES
U
REFERENCES Garside and Schilling, 1979; Berry and others,
1982, no. 15
NOTES
NO.
603
NAME Happy Day property
COUNTY
Washoe
LOCATION Sec. 36(?), T37N, R22E. Exact location
unknown.
UTMN 4546500
UTME
293800
DISTRICT Leadville
QUAD Leadville 7.5'
(1980)
GEOLOGY The prospect may be in the Oligocene South
Willow Formation.
HOST ROCK Sedimentary: Oligocene South Willow
Formation.
MAIN COMMODITIES U
OLD MAP NO.
395
REFERENCES U.S. Atomic Energy Comm. unpublished map; Bonham
and Papke, 1969, pl. I; Bonham and others, 1985; Mason and others, 1996;
Garside, 1973.
NOTES MRDS: M23558; Exact location unknown; UTMs
from near middle of Sec. 36.
NO.
604
NAME Hog Ranch occurrence
OTHER NAME
Locality No. 6.
COUNTY Washoe
LOCATION Sec. 7,
T38N, R23E; sections projected from the north. Prospect is along Hog Ranch
Creek.
UTMN 4562500
UTME
295500
DISTRICT Leadville
QUAD Butte Spring
7.5' (1979)
GEOLOGY Slightly anomalous radioactivity has been
reported from petrified wood in late Miocene sedimentary rocks (oral commun.,
H.F. Bonham).
RADIOACTIVE MINERALS Anomalously radioactive
petrified wood
HOST ROCK Sedimentary: petrified wood in late
Miocene sedimentary rocks
MAIN COMMODITIES U(?)
OLD MAP
NO. 393
REFERENCES Bonham and Papke, 1969; Garside,
1973.
NOTES Exact location unknown; UTMs from near middle Hog
Ranch Creek in Sec. 7.
NO.
605
NAME Hopeless prospect (7 claims)
COUNTY
Washoe
LOCATION SW¼ Sec. 9, T24N, R20E
UTMN
4426520
UTME 265730
DISTRICT
Pyramid
QUAD Tule Peak 7.5' (1980)
DEVELOPMENT
Shallow pits and trenches.
RADIOACTIVITY Background = 0.03
mR/hr; High = 0.45 mR/hr. A ssays range from 0.01 to 0.03%
eU3O8.
GEOLOGY Fluorescent uranium minerals occur along a fault
zone in tuff beds of the Oligocene ash-flow tuff. Abnormal radioactivity was
detected for 100 feet along the fault.
RADIOACTIVE MINERALS
fluorescent uranium minerals
HOST ROCK Volcanic: Oligocene
ash-flow tuffs
MAIN COMMODITIES U
OLD MAP NO.
401
REFERENCES AEC Report 3783; Finch, 1967; Bonham and Papke,
1969; Hurley and others, 1982; Mason and others, 1996; Tingley, 1990; Quade and
others, 1990a,b; Garside, 1973; Hurley and others, 1982, no. 5.
NOTES
MRDS 231094; prospect could not be located by Hurley and others
(1982).
NO. 606
NAME
Ickes prospect
COUNTY Washoe
LOCATION SW¼ Sec.
2 and SE¼ sec 3, T24N, R24E
UTMN 4427280
UTME
306880
DISTRICT Nightingale
QUAD Russell Peak
7.5' (1986)
DEVELOPMENT Adit (+200 feet long) and some
bulldozer cuts.
GEOLOGY Phosphuranylite, calcite, and
manganese- and iron-oxide minerals occur with fault gouge along a fault zone in
ash-flow tuff. This fault also brings the tuffs into coincidence with
pre-Tertiary metamorphic rocks.
RADIOACTIVE MINERALS
phosphuranylite
HOST ROCK Volcanic: ash-flow tuffs
MAIN
COMMODITIES U
OLD MAP NO. 399
REFERENCES
Schilling, 1963; Bonham, 1961; H. F. Bonham, Jr., oral commun. 1978;
Garside, 1973.
NOTES Exact location unknown; UTMs taken from
center of two quarter sections. Same as Lucky Strike(?)
NO. 607
NAME Independence group
(Nos. 1-12)
COUNTY Washoe
LOCATION SW¼ SW¼
Sec. 16, T24N, R18E
UTMN 4425510
UTME
247300
DISTRICT Stateline Peak
QUAD Dogskin
Mountain 7.5'x15' (1979)
DEVELOPMENT Several pits and an
adit.
RADIOACTIVITY Background = 0.03 mR/hr; High = 4.0 mR/hr.
Three 4-foot chip samples contained 0.10 and 0.092% eU3O8 respectively. A select
sample of carbonaceous material contained 0.32% a cU3O8. Two carbonaceous
samples contained 2600 ppm and 5800 ppm eU3O8.
GEOLOGY
Autunite(?) and an unidentified yellow uranium mineral (meta-ankoleite?) are
found with carbonized fossil wood at the base of a cooling unit in Oligocene
ash-flow tuffs. The carbonaceous material is discontinuous, and thickness varies
from a few cm about 2 m. Mineralization in the bed can be traced for about a 0.4
km. The beds dip 30-35ºSW.
RADIOACTIVE MINERALS Autunite(?);
meta-ankoleite(?)
HOST ROCK Volcanic: carbonized fossil wood at
the base of a cooling unit in Oligocene ash-flow tuffs
MAIN
COMMODITIES U
OLD MAP NO. 418
REFERENCES
AEC Report 3787; Holmes, 1972; Hurley and others, 1982; Cupp and others.
1977a; Mason and others, 1996; Tingley, 1990; Quade and others, 1990a,b;
Garside, 1973; 1979; Seidl, 1982.
NOTES MRDS M231095
NO. 608
NAME Lara No.9
claim
COUNTY Washoe
LOCATION SW¼ NW¼ and NE¼
SW¼ Sec. 29, T24N, R19E (projected).
UTMN
4421920
UTME 254130
DISTRICT Stateline
Peak
QUAD Dogskin Mountain 7.5'x15'
(1979)
DEVELOPMENT Prospect pits and bulldozer
cuts.
RADIOACTIVITY Background = 0.01 mR/hr; High = 0.2 mR/hr.
A I-foot chip sample contained 0.06% eU3O8.
GEOLOGY A yellow,
non-fluorescent uranium mineral occurs along N90ºE, 20ºN fractures in Oligocene
ash-flow tuff.
RADIOACTIVE MINERALS yellow, non-fluorescent
uranium mineral
HOST ROCK Volcanic: Oligocene ash-flow
tuffs
MAIN COMMODITIES U
OLD MAP NO.
415
REFERENCES AEC Report 3771; Bonham and Papke, 1969; Cupp
and others. 1977a; Tingley, 1990; Quade and others, 1990a,b; Garside, 1973;
1979; Hurley and others, 1982.
NOTES UTMs from Tingley (1990)
and Quade and others (1990a,b). Could not be located by Hurley and others
(1982).
NO. 609
NAME
Laura(?) claim
COUNTY Washoe
LOCATION Center
Sec. 29, T24N, R19E; along Red Rock Canyon
UTMN
4422030
UTME 254840
DISTRICT Stateline
Peak
QUAD Dogskin Mountain 7.5'x15'
(1979)
DEVELOPMENT One prospect pit.
RADIOACTIVITY
Background = 0.015 mR/hr; High = 0.05 mR/hr
GEOLOGY
Slightly abnormal radioactivity is present along a north-trending fault zone in
the Oligocene ash-flow tuff.
HOST ROCK Volcanic: Oligocene
ash-flow tuffs
MAIN COMMODITIES U
OLD MAP NO.
416
REFERENCES Tingley, 1990; Quade and others, 1990a,b; Cupp
and others. 1977a; Mason and others, 1996; Garside, 1973.
NOTES
MRDS M231098; UTMs from Tingley (1990) and Quade and others (1990a,b).
NO. 610
NAME Lizard claims (Nos.
1-5)
OTHER NAME Lost Lizard claims; Stoddard-Crosby
Mine(?)
COUNTY Washoe
LOCATION NE¼ NE¼ Sec.
21, T24N, R24E
UTMN 4423530
UTME
304790
DISTRICT Nightingale
QUAD Russell Peak
7.5' (1986)
DEVELOPMENT Numerous pits and adits, one of which
is 250 feet long. Workings are for gold and tungsten.
RADIOACTIVITY
Background = 0.006 mR/hr; High = 0.15 mR/hr. A sample contained 0.52%
eU3O8, but only 0.183 cU3O8.
GEOLOGY Uranium minerals
reportedly occur in small pockets, and are reportedly associated with gold. The
host rock is a highly fractured, lime-silicate rock containing actinolite and
calcite. Uraninite(?), allanite, feldspar, pyrite, limonite, and gold are also
reported. Anomalous radioactivity (600 cps, background 60 cps) was observed in a
20 cm by 20 cm spot in calc-silicate rocks during a 1980
visit.
RADIOACTIVE MINERALS uraninite(?)
HOST ROCK
Metamorphic: lime-silicate rock
MAIN COMMODITIES
U
OLD MAP NO. 400
REFERENCES AEC Report 3766;
Garside, 1973.
NOTES Exact location unknown; UTMs from cluster
of shafts and prospects.
NO.
611
NAME Locality FM152
COUNTY
Washoe
LOCATION N½ NE¼ NE¼ Sec. 34, T23N, R21E
UTMN
4411310
UTME 277180
DISTRICT
McClellan
QUAD Moses Rock 7.5' (1980)
DEVELOPMENT
Two shallow (7 and 12 meters) shafts
RADIOACTIVITY NBMG
sample 6010 assayed 260 ppm U
GEOLOGY Iron oxides and sericite
occur in crushed Tertiary Nine Hill Tuff along 1-2 meter wide fault zone that
has an attitude of N45ºE, 85ºNW-90º. Rare quartz veinlets are
present.
HOST ROCK Volcanic: Oligocene Nine Hill
Tuff
MAIN COMMODITIES U
NBMG SAMPLE
6010
REFERENCES Tingley and others, 1999
NOTES
Sample is from dump.
NO.
612
NAME Locality GC198n
OTHER NAME Locality
GC198n
COUNTY Washoe
LOCATION NE¼ NE¼ Sec. 8,
T21N, R21E
UTMN 4398340
UTME
273330
DISTRICT McClellan
QUAD Griffith Canyon
7.5' (1980)
DEVELOPMENT Bulldozer cut.
GEOLOGY
Bulldozer cut here and prospect pits about 22 m east (shown on topographic map)
were probably in search of uranium, although no anomalous radioactivity was
noted in the Oligocene ash-flow tuff at the site.
HOST ROCK
Volcanic: Oligocene ash-flow tuff
MAIN COMMODITIES
U(?)
REFERENCES Tingley and others, 1999
NOTES
NO. 613
NAME Locality
GC61Ag
COUNTY Washoe
LOCATION NE¼ SE¼ Sec. 34,
T22N, R20E
UTMN 4401062
UTME
267165
DISTRICT McClellan
QUAD Griffith Canyon
7.5' (1980)
DEVELOPMENT Prospect pits
RADIOACTIVITY
NBMG sample 5460 assayed 455 ppm U.
GEOLOGY Malachite
and hematite gossan occur with milky quartz vein material in Cretaceous(?)
granodiorite. Vein material is not exposed in pits but is seen on small pile of
mineralized rock.
HOST ROCK Intrusive: Cretaceous
monzonite
MAIN COMMODITIES Cu(?)
OTHER COMMODITIES
U
NBMG SAMPLE 4190
REFERENCES Tingley
and others, 1999
NOTES
NO.
614
NAME Locality Mex 217
COUNTY
Washoe
LOCATION Sec. 10, T24N, R24E
UTMN
4473473
UTME 309337
DISTRICT
Nightingale
QUAD Betty Creek 7.5'
(1981)
RADIOACTIVITY Up to 6 times background; 77 ppm
U3O8.
GEOLOGY Anomalous radioactivity is found in a small area
(a few feet square) in a felsic dike that cuts quartz monzonite.
HOST
ROCK Igneous: felsic dike
MAIN COMMODITIES
U
REFERENCES Berry and others, 1982, no. 11.
NOTES
NO. 615
NAME
Locality No. 10
COUNTY Washoe
LOCATION Sec. 7,
T35N, R23E
UTMN 4534000
UTME
296500
DISTRICT Deephole
QUAD Melody Mountain
7.5' (1980)
GEOLOGY Uranium mineralization occurs in
sedimentary beds in the Oligocene South Willow Formation. The occurrences appear
to be spatially related to a rhyolite plug (oral commun., H. F.
Bonham).
RADIOACTIVE MINERALS uranium mineralization
HOST
ROCK Sedimentary: Oligocene South Willow Formation.
MAIN
COMMODITIES U
OLD MAP NO. 396
REFERENCES
Bonham and Papke, 1969; Garside, 1973.
NOTES Exact
location unknown; UTMs from near middle of Sec. 7.
NO. 616
NAME Locality
No.7
COUNTY Washoe
LOCATION Sec. 33(?), T38N,
R23E; projected from the north. Occurrence is south of Nevada Highway
34.
UTMN 4556000
UTME
299000
DISTRICT Leadville
QUAD Butte Spring
7.5' (1979)
GEOLOGY Abnormal radioactivity occurs in a large
amount of petrified wood in late Miocene sedimentary rocks (oral commun., H.F.
Bonham).
RADIOACTIVE MINERALS Anomalously radioactive petrified
wood
HOST ROCK Sedimentary: petrified wood in late Miocene
sedimentary rocks
MAIN COMMODITIES U(?)
OLD MAP NO.
394
REFERENCES Bonham and Papke, 1969; Garside, 1973;
Mason and others, 1996.
NOTES MRDS: M029061; Exact location
unknown; UTMs from near middle of Sec. 33.
NO.
617
NAME Locality RSL 167
OTHER NAME
Alteration halo
COUNTY Washoe
LOCATION NE¼ NW¼
Sec. 3, T24N, R18E
UTMN 4429281
UTME
247691
DISTRICT State Line
QUAD Dogskin
Mountain 7.5'x15' (1979)
DEVELOPMENT Prospect pit and short,
partly caved adit.
RADIOACTIVITY Background=150 cps; High = 250
cps.
GEOLOGY A short adit and nearby prospect pit explore
Oligocene ash-flow tuff (tuff of Axehandle Canyon?) where it lies on mafic
Mesozoic metavolcanic rocks. No obvious mineralization was observed. Locality is
within a 1,600-foot diameter argillic alteration halo. The halo also contains
surficial sericite alteration and a couple of outcrops of chalcedony but lacks a
well-developed zone of kaolinization.
HOST ROCK Volcanic:
Oligocene ash-flow tuff (tuff of Axehandle Canyon?)
MAIN COMMODITIES
U(?)
REFERENCES Seidl, 1982
NOTES
NO. 618
NAME Lost Partner
group (1-9)
OTHER NAME Lost Pardner mine; Lost Partners; Lost
Pardner group; Bee-Lost Partners (Volcanic Gold Corp.)
COUNTY
Washoe
LOCATION SW¼ SW¼ Sec. 24, T23N, R21E; near the head of
Perry Canyon
UTMN 4413091
UTME
279481
DISTRICT Pyramid
QUAD Moses Rock 7.5'
(1980)
U PRODUCTION 1950s(?): An unknown amount of ore,
probably less than 100 tons, has been produced.
DEVELOPMENT
Numerous shallow pits, a shallow shaft, some trenching, and some diamond
drilling.
RADIOACTIVITY Background = 0.02 to 0.03 mR/hr; High =
1.4 mR/hr. A 1.9-foot-wide chip sample contained 0.51% eU3O8. Samples collected
by Hurley and others (1982) were only 86 ppm or less.
GEOLOGY
Several uranium minerals, including autunite, torbernite(?), and pitchblende(?),
have been reported from this locality (AEC Report 3768). The uranium
mineralization is found in a fault breccia in Oligocene tuff of Dogskin
Mountain, which also contains iron oxides. The fault trends N80°W and dips 55°S.
No uranium minerals were observed in 1980. The tuff is silicified, argillized,
and locally contains disseminated pyrite. Because this area is within the
alteration halo of the Pyramid Mining District, it is probable that the pyrite
and hydrothermal alteration are related to that period of
mineralization.
RADIOACTIVE MINERALS Autunite; torbernite(?);
pitchblende(?)
HOST ROCK Volcanic: Oligocene ash-flow
tuffs
MAIN COMMODITIES U
OLD MAP NO.
407
REFERENCES AEC Report 3768; Bonham and Papke, 1969; Cupp
and others. 1977a; Tingley, 1990; Quade and others, 1990a,b; Mason and others,
1995; Hurley and others, 1982; Bonham and Papke, 1969; Garside and others, 2003;
Garside, 1973; 1979.
NOTES MRDS M231086; UTMs from location of
Hurley and others (1982).
NO.
619
NAME Lowary claims
OTHER NAME Maue-McCray
mine; Lowery group; Lowary mine; Lowary 2 to 11
COUNTY
Washoe
LOCATION SE¼ SE¼ Sec. 36, T24N, R20E; and SW¼ Sec. 31,
T24N, R21E
UTMN 4420060
UTME
271140
DISTRICT Pyramid
QUAD Tule Peak 7.5'
(1980)
U PRODUCTION 1956-1959, 1964, 1966: 311 tons of ore
averaging 0.53% U3O8 (3,306 lbs. U3O8)
DEVELOPMENT An open cut
100 feet long, 70 feet wide, and 10 to 20 feet deep, and several smaller pits
and trenches.
RADIOACTIVITY Background = 0.025 mR/hr; High =
1.4 mR/hr. Select samples contain over 9% cU3O8.The highest analyses in Hurley
and others (1982) were 0.32% U3O8.
GEOLOGY Uranium
mineralization occurs in and adjacent to a N10-20°E fault zone in welded
Oligocene rhyolite ash-flow tuff. Anomalous radioactivity extends along the
fault for about 200 feet in a zone up to 10 feet wide. U.S. Atomic Energy
Commission geologists (A.E.C. PRR-3775) who examined the property in 1955
reported uraninite, autunite, uranospinite, uraniferous opal, and barite.
However, Bonham (1969) recognized only autunite and a yellow secondary uranium
mineral (probably uranophane). Brooks (1956) also reports the presence of
radioactive manganese oxide.
RADIOACTIVE MINERALS Autunite;
uraniferous opal; uraninite; uranophane(?); uranospinite,
HOST ROCK
Volcanic: Oligocene welded rhyolite ash-flow tuff
MAIN
COMMODITIES U
OLD MAP NO. 405
REFERENCES
AEC Report 3775; Bonham and Papke, 1969; McJannet, 1957; Brooks, 1956;U.S
Bureau of Mines Minerals Yearbooks, 1957, 1958, 1964, 1966; Cupp and others.
1977a; Mason and others, 1996; Tingley, 1990; Quade and others, 1990a,b;
Garside, 1973; 1979; Waters, 1955; Castor and Ferdock, 2004; Hurley and others,
1982, no. 8.
NOTES MRDS 231099; UTMs from Tingley (1990) and
Quade and others (1990a,b).
NO.
620
NAME Lucky Day and Valley View prospects
COUNTY
Washoe
LOCATION SE¼ NE¼ Sec. 19, T23N, R18E; on the
California-Nevada boundary.
UTMN 4414530
UTME
243500
DISTRICT Stateline Peak
QUAD Granite
Peak 7.5' (1980)
DEVELOPMENT Several prospect
pits.
RADIOACTIVITY Background = 0.05 mR/hr; High = 1.0 mR/hr.
Select samples contain up to 0.2% cU3O8.
GEOLOGY Autunite and
an unidentified yellow, crystalline uranium mineral occur in welded and
non-welded tuffs of Oligocene rhyolitic ash-flow tuff.
RADIOACTIVE
MINERALS Autunite; unidentified yellow, crystalline uranium
mineral
HOST ROCK Volcanic: Oligocene rhyolitic ash-flow
tuff.
MAIN COMMODITIES U
NBMG SAMPLE
6098
OLD MAP NO. 425
REFERENCES AEC Report
1153 (California); Cupp and others. 1977a; Hurley and others, 1982; Tingley and
others, 1999; Garside, 1973; 1979; Cinque, 1979
NOTES Exact
location unknown. UTMs taken from center of section on Nevada side of border.
Tingley and others (1999) put this in Sec. 29 at N4412978, E244005. Hurley and
others (1982) put location just over the line into California.
NO. 621
NAME Lucky Day
group
OTHER NAME Lucky Day No. 2; Pegmatite claims; Pegmatite
Nos. 14 and 15
COUNTY Washoe
LOCATION NE¼ SE¼
Sec. 33 and SW¼ Sec. 34, T25N, R24E
UTMN 4429230
UTME
305270
DISTRICT Nightingale
QUAD
Russell Peak 7.5' (1986)
DEVELOPMENT Several small prospect
pits, bulldozer cuts, several short adits.
RADIOACTIVITY
Background = 0.035 mR/hr; High = 0.25 mR/hr. Select samples contain from 0.02 to
0.75% eU3O8. Six select samples contained 535-3640 ppm U, and are anomalous in
Mo, V, Cu, and Y (Hurley and others, 1982).
GEOLOGY Anomalous
radioactivity and yellow uranium minerals (autunite?, weeksite, carnotite,
uranophane?, and haiweeite) are found at one locality in a small prospect pit
along a 15 cm thick volcanic ash bed. The radioactive bed lies directly below
the lowest massive, red, Oligocene ash-flow tuff, and above about 6 m of
slightly bentonitic ash. The ash-flow tuff lies with angular unconformity over
steeply dipping black Triassic(?) limestone of the Nightingale sequence.
Radioactivity is not continuous along the bed in outcrop.
RADIOACTIVE
MINERALS uranophane
HOST ROCK Volcanic: volcanic ash
bed
MAIN COMMODITIES U
OLD MAP NO.
397
REFERENCES AEC Report 3734; Bonham and Papke, 1969; Hurley
and others, 1982; Mason and others, 1996; Garside, 1973; Berry and others, 1982,
no. 21; Hurley and others, 1982, no. 11.
NOTES MRDS: M231147;
UTMs from MRDS: L.J. Garside visit, 1969.
NO.
622
NAME Lucky Strike claims
COUNTY
Washoe
LOCATION SW¼ Sec. 2 and SE¼ sec 3, T24N,
R24E
UTMN 4427280
UTME
306880
DISTRICT Nightingale
QUAD Russell Peak
7.5' (1986)
DEVELOPMENT 14 claims in SW1¼ and 5 claims in SE1¼
section.
RADIOACTIVITY Background = 100 cps; High = 350 cps
along one fault.
GEOLOGY Detailed geology is uncertain, but
claims are in Oligocene ash-flow tuffs, variably welded, ranging from rhyolite
to quartz latite in composition. At one locality, slightly anomalous
radioactivity (350 cps, background 100 cps) was noted along a N25ºW, 70-80ºSW
fault cutting rhyolitic ash-flow tuff. The radioactivity is found at a roll or
inflection in the fault surface, which occurs at the intersection with a cross
fault.
HOST ROCK Volcanic: Oligocene ash-flow tuffs
MAIN
COMMODITIES U
REFERENCES U.S. Bureau of Mines, 1995;
Bonham and Papke, 1969
NOTES MASMILS: 0320310418, 0320310419;
Exact location unknown; UTMs taken from center of two quarter sections. Same as
Ickes(?)
NO. 623
NAME
Mandy's prospect
COUNTY Washoe
LOCATION Sec.
18(?), T21N, R21E
UTMN 4396060
UTME
271170
DISTRICT McClellan
QUAD Griffith Canyon
7.5' (1980)
DEVELOPMENT One 15-foot inclined
shaft.
RADIOACTIVITY Background = 0.03 mR/hr; High = 0.4 mR/hr.
A select sample contained 0.57% eU3O8.
GEOLOGY Anomalous
radioactivity has been reported from pegmatite-quartz veins in Cretaceous
granodiorite.
HOST ROCK Intrusive: pegmatite-quartz veins in
Cretaceous granodiorite
MAIN COMMODITIES U
OLD MAP
NO. 430
REFERENCES AEC Report 3782; Hurley and
others, 1982; Garside, 1973.
NOTES Exact location uncertain;
UTMs from center of section.
NO.
624
NAME Mountain Goat claim
COUNTY
Washoe
LOCATION NE¼ Sec. 14, T20N, R23E
UTMN
4386610
UTME 297380
DISTRICT
Olinghouse
QUAD Fernley West 7.5' (1985)
DEVELOPMENT
Several pits, a 10-12 m vertical shaft, a 6 m inclined shaft, a 4 m adit,
and a 25 m adit. Claim staked in 1951.
GEOLOGY Numerous pits
and shallow workings explore bleached and slightly iron-stained fault zones in a
quartz-latite welded tuff. The tuff is purple with conspicuous white pumice
lapilli up to several cm in diameter.
HOST ROCK Volcanic:
quartz-latite welded tuff
MAIN COMMODITIES U
NBMG
SAMPLE 4124
REFERENCES Tingley, 1990; Quade and
others, 1990a,b; Garside, 1973.
NOTES
NO. 625
NAME Nat Kearns Feldspar
mine
COUNTY Washoe
LOCATION W½ NW¼ Sec. 13,
T22N, R18E
UTMN 4406885
UTME
250000
DISTRICT Stateline Peak
QUAD Granite
Peak 7.5' (1980)
OTHER PRODUCTION 1931: a number of carloads of
feldspar
DEVELOPMENT Open cut about 6 m long.
GEOLOGY
The area contains aplite and pegmatite dikes trending about N20ºE that
cut Cretaceous(?), medium to coarse grained, light gray to nearly white, biotite
quartz monzonite of Granite Peak. These dikes are commonly 30 cm to 1 m thick,
but may be up to 3 m thick and may be either pure aplite or aplite and pegmatite
mixed in varying proportions. A small cut reportedly contained a pegmatite dike
varying from 0.3-2.4 m thick with a footwall attitude of N15ºW, 70ºE, and
composition of 60-70% quartz with the remainder being pink perthitic feldspar
and minor muscovite and other minerals. The 1945-1947 cut exposed a 1-m-thick
pegmatite body trending N50-60ºW, 60-70ºNW, with a composition of about 25%
quartz, almost 40% blocky pink perthite, about 35% clevelandite in up to 10 cm
long platy crystals. Minor minerals include less than 2.5 cm blades of biotite,
accessory minerals, and rare allanite. No beryl was present. Carnotite was
reported in a specimen collected from this pit.
RADIOACTIVE MINERALS
carnotite
HOST ROCK Intrusive: granitic aplite-pegmatite
dike
MAIN COMMODITIES Feldspar
OTHER COMMODITIES
U
NBMG SAMPLE 6080
REFERENCES Tingley
and others, 1999; Bonham and Papke, 1969; Castor and Ferdock, 2004; Garside,
1987; Olsen and Hinrichs, 1960
NOTES
NO. 626
NAME Neuebaumer and
Kelley claims
COUNTY Washoe
LOCATION Sec.
3(?), T18N, R20E Exact location unknown
UTMN
4370500
UTME 265500
QUAD Steamboat 7.5'
(1994)
RADIOACTIVITY About 10 to 20(?) times
background.
GEOLOGY Anomalous radioactivity is reported in
partially silicified sand and diatomite beds. This property could not be located
in 1970.
RADIOACTIVE MINERALS Anomalously radioactive
diatomite
HOST ROCK Sedimentary: partially silicified sand and
diatomite beds
MAIN COMMODITIES U(?)
OLD MAP NO.
437
REFERENCES U.S. Atomic Energy Reconn. Report 3790;
Garside, 1973.
NOTES Exact location uncertain; UTMs from near
center of Sec. 3
NO. 627
NAME
Obsidian group (8 claims)
OTHER NAME Columbia and Louise
claims
COUNTY Washoe
LOCATION Secs. 2 and 11,
T44N, R23E
UTMN 4625500
UTME
304000
QUAD Catnip Mountain SE 7.5'
(1966)
DEVELOPMENT One shallow bulldozer cut in
alluvium
RADIOACTIVITY Background = 0.02 to 0.03 mR/hr; 10
samples assayed less than 0.005% U3O8
GEOLOGY Alluvium overlies
gray rhyolite containing feldspar phenocrysts. Ten samples from alluvium and
rhyolite contained trace gold and silver and less than 0.005% U3O8.
HOST
ROCK Volcanic: rhyolite
MAIN COMMODITIES Ag, Au,
U
REFERENCES Tuchek and others, 1984; Mason and others,
1996.
NOTES MRDS: M232566; Exact location unknown; UTMs from
near middle of two sections.
NO.
628
NAME Occurrence (T23N, R23E)
COUNTY
Washoe
LOCATION Center of boundary between Sec. 19 and 30,
T23N, R23E; on Pyramid Lake Indian Reservation
UTMN
4412700
UTME 291180
DISTRICT
Pyramid
QUAD Pah Rah Mountain 7.5'
(1985)
RADIOACTIVITY Background = 0.015 mR/hr; High = 0.10
mR/hr. Hurley and others (1982) reported the calcareously cemented sandstone
contained 207 ppm U3O8.
GEOLOGY Lacustrine sediments of
Pleistocene Lake Lahontan are radioactive in an area of a few tens of square
feet. The rocks are cobble conglomerates and cross-bedded sandstones which are
cemented by and interbedded with calcareous tufa. The clastic debris is mainly
from older volcanic rocks. No uranium minerals were noted, and radioactivity
does not appear to be restricted to particular beds or other structural
features.
HOST ROCK Sedimentary: lacustrine sediments of
Pleistocene Lake Lahontan
MAIN COMMODITIES U
OLD MAP
NO. 433
REFERENCES AEC Report 3781; Hurley and
others, 1982; Mason and others, 1996; Garside, 1973.
NOTES
MRDS: M231075; UTMs from center of two sections.
NO. 629
NAME Occurrence (T24N,
R18E, Sec. 6)
COUNTY Washoe
LOCATION Sec. 6,
T24N, R18E
UTMN 4429000
UTME
244200
DISTRICT State Line
QUAD Dogskin
Mountain 7.5'x15' (1979)
RADIOACTIVITY Two samples assayed 0.04
and 0.05% equivalent U3O8
GEOLOGY Autunite reportedly occurs in
coatings on pebbles and in small pockets in sandstone. Bonham and Papke show the
closest bedrock to be Tertiary Pyramid Sequence sedimentary and volcanic
rocks.
RADIOACTIVE MINERALS Autunite
HOST ROCK
Sedimentary: sandstone
MAIN COMMODITIES U
REFERENCES
Bennett and Mallery, 1973; Bonham and Papke, 1969
NOTES
Exact location uncertain; UTMs from near center of Sec. 6
NO. 630
NAME Occurrence (T24N,
R18E, Sec. 8)
COUNTY Washoe
LOCATION Sec. 8,
T24N, R18E
UTMN 4428000
UTME
245000
DISTRICT State Line
QUAD Dogskin
Mountain 7.5'x15' (1979)
GEOLOGY Autunite, carnotite(?), and
torbernite are present in a fault zone in metamorphic rocks. No samples were
analyzed, but a high thorium content was reported. Bonham and Papke show the
closest bedrock to be Tertiary Pyramid Sequence sedimentary and volcanic
rocks.
RADIOACTIVE MINERALS Autunite; carnotite(?);
torbernite
HOST ROCK Metamorphic: metamorphic rocks
MAIN
COMMODITIES U, Th
REFERENCES Bennett and Mallery,
1973; Bonham and Papke, 1969
NOTES Exact location uncertain;
UTMs from near center of the N½, N½ of Sec. 8. Most of section 8 is Dry Valley
and the northernmost part of the section is on the pediment leading up to the
Fort Sage Mountains.
NO.
631
NAME Occurrence (T24N, R21E)
COUNTY
Washoe
LOCATION NW¼ Sec. 29, T24N, R21E
UTMN
4422450
UTME 273430
DISTRICT
Pyramid
QUAD Tule Peak 7.5' (1980)
GEOLOGY
Details of the geology are unknown, but on the map of Bonham and Papke (1969),
the prospect is located near or on a fault in Oligocene ash-flow
tuffs.
HOST ROCK Volcanic: Oligocene ash-flow tuffs
MAIN
COMMODITIES U
OLD MAP NO. 402
REFERENCES
Bonham and Papke, 1969; Tingley, 1990; Quade and others, 1990a,b;
Garside, 1973.
NOTES UTMs from Tingley (1990) and Quade and
others (1990a,b).
NO. 632
NAME
Occurrence (T24N, R24E, Sec. 2)
COUNTY
Washoe
LOCATION W½ Sec. 2, T24N, R24E
UTMN
4427750
UTME 307320
DISTRICT
Nightingale
QUAD Russell Peak 7.5' (1986)
DEVELOPMENT
Prospect pits.
GEOLOGY Anomalous radioactivity is
reported from tuffaceous sediments in the Tertiary Chloropagus
Formation.
HOST ROCK Sedimentary: Tertiary Chloropagus
Formation.
MAIN COMMODITIES U
OLD MAP NO.
398
REFERENCES Schilling, 1962; Bonham, 1961; Garside,
1973.
NOTES Exact location unknown; UTMs from middle of half
section.
NO. 633
NAME
Occurrence (T24N, R24E, Sec. 3)
COUNTY
Washoe
LOCATION SE¼ Sec. 3(?), and SW¼ sec 4(?), T24N,
R24E
UTMN 4427160
UTME
306420
DISTRICT Nightingale
QUAD Russell Peak
7.5' (1986)
DEVELOPMENT Prospect pits.
GEOLOGY
Anomalous radioactivity is present in Oligocene ash-flow tuffs.
HOST
ROCK Volcanic: Oligocene ash-flow tuffs
MAIN COMMODITIES
U
REFERENCES Bonham, 1961; U.S. Bureau of Mines, 1995;
Garside, 1979.
NOTES MASMILS: 0320310214; UTMs taken from
prospect on Southern Pacific Map near MASMILS location. Section 4 may be a
misprint.
NO. 634
NAME
Occurrence (T44N, R23E)
OTHER NAME Unnamed prospect no.
2
COUNTY Washoe
LOCATION Secs. 3, T44N,
R23E
UTMN 4626400
UTME 302100
QUAD
Swan Lake 7.5' (1966)
DEVELOPMENT 4.6 meter diameter
pit.
RADIOACTIVITY Less than 0.005% U3O8
GEOLOGY
Occurrence is near contact of Miocene-Pliocene basalt and sediments.
Samples contained trace gold and silver and less than 0.005% U3O8.
HOST
ROCK Sedimentary/Volcanic: Miocene-Pliocene basalt;
sediments
MAIN COMMODITIES Ag, Au, U
REFERENCES
Tuchek and others, 1984; Mason and others, 1996.
NOTES
MRDS: M232529; UTMs from MRDS.
NO.
635
NAME Paiute No. 35 claim
OTHER NAME Paiute
project
COUNTY Washoe
LOCATION SE¼ Sec. 17,
T22N, R23E
UTMN 4405220
UTME
292780
DISTRICT Olinghouse
QUAD Pah Rah
Mountain 7.5' (1985)
DEVELOPMENT Drill holes and prospect
pits.
RADIOACTIVITY NBMG sample 4136 assayed 100 ppm
Th
GEOLOGY Select calcite and quartz vein matter from
dumps.
HOST ROCK Volcanic: Tertiary volcanic rocks
MAIN
COMMODITIES Ag, Au
OTHER COMMODITIES Cu, Mo, Th,
Zn
NBMG SAMPLE 4136
REFERENCES Tingley, 1990;
Quade and others, 1990a,b; Paiute Project, 1981-1989
NOTES
NO. 636
NAME Penney
claims
OTHER NAME Penny claims.
COUNTY
Washoe
LOCATION NW¼ SW¼ Sec. 31, T24N, R21E
UTMN
4420140
UTME 273390
DISTRICT
Pyramid
QUAD Tule Peak 7.5' (1980)
DEVELOPMENT
Prospect pit and bulldozer cuts
RADIOACTIVITY Organic material
with assays up to 48 ppm U3O8.
GEOLOGY Sheared Oligocene
ash-flow tuffs contain local concentrations of organic material with assays up
to 48 ppm U3O8.
HOST ROCK Volcanic: Oligocene ash-flow
tuffs
MAIN COMMODITIES U
REFERENCES Cupp and
others. 1977a; Hurley and others, 1982; Garside, 1973.
NOTES
Penney claims overlap part of the Armstrong claims.
NO. 637
NAME Petrified
Forest
COUNTY Washoe
LOCATION SW¼ Sec. 21,
T38N, R23E
UTMN 4559050
UTME
298750
DISTRICT Leadville
QUAD Butte Spring
7.5' (1979)
RADIOACTIVITY Up to 4-6 times
background.
GEOLOGY Anomalous radioactivity is associated with
silicified tree stumps in a rhyolitic tuff.
HOST ROCK Volcanic:
Tuff
MAIN COMMODITIES U
REFERENCES Castor and
others, 1982, no. 19.
NOTES Possibly the same as Locality No.
7, which could not be located by Castor and others (1982).
NO. 638
NAME Petrified Tree
group (Nos. 1-17)
OTHER NAME Spanish Springs Valley prospect;
Petrified Tree prospect
COUNTY Washoe
LOCATION
NE¼ SW¼ Sec. 12, T21N, R20E
UTMN 4397850
UTME
269480
DISTRICT McClellan
QUAD Griffith Canyon
7.5' (1980)
DEVELOPMENT Two bulldozer benches, prospect pits,
and a bulldozer road.
RADIOACTIVITY Background = 0.013 mR/hr;
High = 0.10 mR/hr. Carbonized wood contains 0.025% U3O8. Hurley and others
(1982) reported analyses up to 157 ppm.
GEOLOGY Anomalous
radioactivity is associated with silicified and carbonized logs and other plant
material at the base of the Oligocene tuff of Axehandle Canyon. The tuff is
densely welded here, and overlies a roof pendant of biotite-rich gneissic rock
in a granodiorite intrusion which crops out nearby. The metamorphic rocks have
been cut by aplitic dikes and apophyses of granodiorite. The rhyolite ash-flow
tuff was apparently deposited in a paleovalley cut in granodiorite. The logs and
other material are found below the perlitic vitrophyre base of the tuff in an
ash-rich bentonitic unit, which apparently occurs near the bottom of a
paleovalley. Several small faults and fractures are present, but the
radioactivity does not seem to be localized along them. Sabugalite and autunite
occur in the wood, and disseminated in the weathered metamorphic rocks. The
uranium minerals are more abundant in the silicified portions of the
logs.
RADIOACTIVE MINERALS Anomalously radioactive carbonaceous
material and petrified wood; autunite; sabugalite
HOST ROCK
Volcanic: silicified and carbonized logs and other plant material at the base of
the Oligocene tuff of Axehandle Canyon
MAIN COMMODITIES
U
NBMG SAMPLE 6097
OLD MAP NO.
428
REFERENCES AEC Reports 3773, 3760; Bonham and Papke, 1969;
Holmes, 1972; Cupp and others. 1977a; Hurley and others, 1982; Mason and others,
1996; Tingley, 1990; Quade and others, 1990a,b; Garside, 1973; 1979.
NOTES
MRDS M231077
NO.
639
NAME Polly Lode claim
COUNTY
Washoe
LOCATION Center NE¼ NW¼ Sec. 16, T21N,
R20E
UTMN 4396950
UTME
264630
DISTRICT McClellan
QUAD Griffith Canyon
7.5' (1980)
DEVELOPMENT A prospect pit about 3 m deep at the
site of anomalous radioactivity. Bulldozer roads and several other prospect pits
over an area of about 0.75 square km.
RADIOACTIVITY Anomalous
radioactivity: Background = 90 cps; High = 750 cps
GEOLOGY
Anomalous radioactivity, up to 750 cps (counts per second), is associated with
fault breccia along a N50ºW, 80ºSW fault which cuts a silicic ash-flow tuff of
the tuffs of Whiskey Spring. Background radioactivity in this tuff is 90 cps,
and is about 50 cps
HOST ROCK Volcanic: tuffs of Whiskey
Spring
MAIN COMMODITIES Au(?), U
REFERENCES
Tingley and others, 1999
NOTES Location is site of anomalous
radioactivity; anomalous radioactivity was not noted at other prospects in the
area.
NO. 640
NAME
Reconnaissance auger sample site 15A
COUNTY
Washoe
LOCATION Sec. 14, T15N, R18E; spring along tributary of
Marlette Creek
UTMN 4339250
UTME
247500
QUAD Marlette Lake 7.5' (1994)
DEVELOPMENT
0.3 m deep auger hole
RADIOACTIVITY Sample assayed 2,270
ppm U.
GEOLOGY Interbedded peat, clay, and sand in a bog. The
bedrock is Cretaceous monzo granite of Spooner Summit.
RADIOACTIVE
MINERALS Anomalously radioactive carbonaceous material
HOST
ROCK Sedimentary: Quaternary marsh sediments
MAIN
COMMODITIES U
REFERENCES Otton and others, 1985;
Grose, 1986
NOTES Exact location uncertain; location estimated
from Otton and others, 1985
NO.
641
NAME Reconnaissance auger sample site 22
COUNTY
Washoe
LOCATION Sec. 5, T15N, R19E; bog on southeast
edge of Hobart Reservoir
UTMN 4341800
UTME
252700
QUAD Carson City 7.5' (1994)
DEVELOPMENT
1.5 m deep auger hole
RADIOACTIVITY Samples from between
surface and 1 m assay between 241 to 1,600 ppm U.
GEOLOGY
Interbedded peat, clay, and sand in a bog. The bedrock is Cretaceous
hornblende-biotite granodiorite.
RADIOACTIVE MINERALS
Anomalously radioactive carbonaceous material
HOST ROCK
Sedimentary: Quaternary marsh sediments
MAIN COMMODITIES
U
REFERENCES Otton and others, 1985; Trexler, 1977
NOTES
Exact location uncertain; location estimated from Otton and others,
1985
NO. 642
NAME Red
Bluff mine
OTHER NAME Red Bluff prospect; Red Bluff Nos. 4-6,
10 and 11; Red Bluff uranium property
COUNTY
Washoe
LOCATION N½ Sec. 1, T23N, R20E
UTMN
4419720
UTME 270460
DISTRICT
Pyramid
QUAD Tule Peak 7.5' (1980)
U RESOURCES/
RESERVES 1991: 0.05% U3O8 cutoff grade: 200,000 tons averaging 0.13%
U3O8; 0.1% U3O8 cutoff grade: 100,000 tons averaging 0.24%
U3O8
DEVELOPMENT Originally 15 unpatented claims with two adits
that connect with about 35 m of workings.
GEOLOGY Uranium
mineralization (autunite) is found within and adjacent in the footwall to an
andesite dike which intrudes the Oligocene tuff of Painted Hills (Faulds and
others, 2003; Garside and others, 2003). The footwall contact zone of the dike
has been faulted, and both the dike and fault strike N35 to 70ºE and dip 65 to
75ºNW. Mineralization occurs in lenticular shoots up to 4 feet thick and 12 feet
in diameter. Uranium assays up to 15% have been obtained from the mineralized
zone, however mineralization of economic interest is generally pod-like and
discontinuous. Minerals include autunite, clevite(?), phosphuranylite,
sabugalite, and uraniferous hematite and opal.
RADIOACTIVE MINERALS
Autunite; clevite(?); phosphuranylite; sabugalite; uraniferous hematite
and opal
HOST ROCK Intrusive/Volcanic: andesite dike; Oligocene
tuff of Painted Hills
MAIN COMMODITIES U
REFERENCES
Hurley and others, 1982; Cupp and others. 1977a; Faulds and others, 2003;
Garside and others, 2003; Mason and others, 1996; Tingley, 1990; Quade and
others, 1990a,b; Castor and Henry, 2000; Bonham and Papke, 1969; Garside, 1973;
1979; Hendrickson, 1991; Castor and others, 1996; Castor and Ferdock,
2004.
NOTES MRDS 231103; UTMs from Tingley (1990) and Quade and
others (1990a,b); UTMs from location by Cup and others (1977); partly overlaps
DeLongchamps property
NO.
643
NAME Red Rock prospect
OTHER NAME Red Rock
Road area; Kollman prospect; Deer Lodge claims; O'Blarney
claims.
COUNTY Washoe
LOCATION NE¼ SW¼ Sec.
27, T22N, R18E
UTMN 4403374
UTME
247423
DISTRICT Stateline Peak
QUAD Reno NW
7.5' (1982)
DEVELOPMENT Two bulldozer
benches.
RADIOACTIVITY Background = 0.012 mR/hr; High = 0.13
mR/hr. Allanite is radioactive and contains some thorium. Large hand specimens
run about 10 times background. Hurley and others (1982) report pegmatitic
granite contains 37 ppm U3O8.
GEOLOGY A large granitic
aplite-pegmatite dike (150 feet by 500 feet) that cuts a Jurassic(?) quartz
diorite intrusion contains several small segregations of allanite pegmatite. The
dike strikes east-west and is nearly vertical. Eight allanite pegmatite bodies
are reported in the dike. The allanite occurs as euhedral to subhedral crystals
as much as 6 cm. long and 1 cm. wide in an aplitic matrix of quartz, albite, and
microcline. Allanite content varies from 5 to 30%. The large aplite-pegmatite
dike is probably related to a pluton of quartz monzonite which intrudes the
quartz diorite about 1 mile east of the prospect. Tschefjkinite (a rare earth
titanite-silicate) has been reported from the Deer Lodge claims.
HOST
ROCK Intrusive: granitic aplite-pegmatite dike
MAIN
COMMODITIES Rare earths, Th, U
NBMG SAMPLE
6205
OLD MAP NO. 434
REFERENCES Olson and
Hinrichs, p. 180; Staatz, 1964; Volborth, 1962a; Bonham and Papke, 1969; Davis,
1954; U.S. Atomic Energy Comm. Prelim. Reports 3797, 3774; Tingley and others,
1999; Hurley and others, 1982; Cupp and others. 1977a; Bonham and Papke, 1969;
Mason and others, 1996; Garside, 1973; Drumheller, 1978.
NOTES
MRDS: M231133
NO. 644
NAME
Sample B-3a
COUNTY Washoe
LOCATION NE¼
NE¼ Sec. 24, T22N, R21E
UTMN 4404700
UTME
280200
DISTRICT Pyramid
QUAD Moses Rock 7.5'
(1980)
RADIOACTIVITY Select sample assayed 53.7 ppm
U3O8
GEOLOGY Devitrified Oligocene Nine Hill Tuff.
HOST
ROCK Volcanic: Oligocene Nine Hill Tuff
MAIN COMMODITIES
U
REFERENCES Hutton, 1978
NOTES Exact
location uncertain; UTMs from near center of quarter-quarter section.
NO. 645
NAME Snap
property
OTHER NAME Snap and Snap 2, 3, 4
claims
COUNTY Washoe
LOCATION Sec. 2(?), T22N,
R21E; Exact location unknown
UTMN 4409000
UTME
278000
DISTRICT Pyramid
QUAD Moses Rock 7.5'
(1980)
DEVELOPMENT 1958: Four unpatented
claims.
GEOLOGY Detailed prospect geology uncertain, but Sec. 2
includes silicic Oligocene ash-flow tuffs that have uranium mineralization
elsewhere.
RADIOACTIVE MINERALS uranium
mineralization
HOST ROCK Volcanic: Oligocene ash-flow
tuffs
MAIN COMMODITIES U
OLD MAP NO.
409
REFERENCES U.S. Atomic Energy Commission unpublished map;
Tingley, 1990; Quade and others, 1990a,b; Mason and others, 1996; Garside,
1973.
NOTES MRDS M231107; UTMs from Quade and others (1990a,b)
NO. 646
NAME Summit
Spring
COUNTY Washoe
LOCATION SE¼ NE¼ SE¼ Sec.
15, T22N, R18E
UTMN 4406170
UTME
248050
DISTRICT Stateline Peak
QUAD Granite
Peak 7.5' (1980)
DEVELOPMENT Steel pipe discharging into stock
trough
RADIOACTIVITY 120 ppb U in water.
GEOLOGY
Spring in Cretaceous quartz monzogabbro
RADIOACTIVE MINERALS
uranium dissolved in water
HOST ROCK Intrusive(?):
Spring in Cretaceous quartz monzogabbro; spring water
MAIN COMMODITIES
U
REFERENCES Fricke, 1983
NOTES
NO. 647
NAME Sundown
claim
OTHER NAME Wadsworth Uranium group (18(?) claims); RB No.
24 claim
COUNTY Washoe
LOCATION NW¼ Sec. 14,
T20N, R23E; on the south and west sides of a butte
UTMN
4386100
UTME 297260
DISTRICT
Olinghouse
QUAD Fernley West 7.5' (1985)
DEVELOPMENT
Several bulldozer roads, numerous prospect pits, two 10-foot
adits.
RADIOACTIVITY Background= 0.017 mR/hr; High = 0.17
mR/hr. A 1.5-foot chip sample contained 0.03% eU3O8, and Hurley and others
(1982) reported 439 ppm U3O8 from a tuff with carbonized wood.
GEOLOGY
Radioactivity is found in Oligocene rhyolitic ash-flow tuff. The most
anomalous radioactivity was noted in a 6-m adit in white, unwelded basal Nine
Hill Tuff just below the basal densely welded zone. Radioactivity in the short
adit is about 1000 cps; background is about 100 cps. The highest radioactivity
was observed on carbonized wood in the tuff. Fragments of carbonized and
silicified wood and plant material 1-100 cm in length occur in the tuff parallel
to compaction foliation in the overlying welded zone. Uranophane(?) occurs as
rare coatings on fractures in the tuff.
RADIOACTIVE MINERALS
Anomalously radioactive carbonaceous material; uranophane(?)
HOST ROCK
Volcanic: Oligocene rhyolitic ash-flow tuff
MAIN COMMODITIES
U
NBMG SAMPLE 4117
OLD MAP NO.
435
REFERENCES AEC Report 3788; Rose, 1969, p. 27; Mason and
others, 1996; Tingley, 1990; Quade and others, 1990a,b; Garside, 1973; Hurley
and others, 1982, no. 17.
NOTES
NO. 648
NAME Sunnyside claims
(Nos. 1 and 2)
COUNTY Washoe
LOCATION SW¼ SW¼
Sec. 20, T24N, R19E
UTMN 4423206
UTME
253660
DISTRICT Stateline Peak
QUAD Dogskin
Mountain 7.5'x15' (1979)
DEVELOPMENT Several bulldozer cuts and
a caved shaft.
RADIOACTIVITY Background = 0.04 mR/hr; High =
0.15 mR/hr. A 1-foot horizontal chip sample contained 0.03%
eU3O8.
GEOLOGY Radioactivity occurs along a clay-altered and
hematized fault zone in Oligocene ash-flow tuffs. The fault is nearly
horizontal. The most radioactive area (30 x background) is a 3-cm zone of clay
gouge. Autunite and phosphuranylite occur in or adjacent to the ash-flow
tuffs.
RADIOACTIVE MINERALS Anomalously radioactive clay and
iron oxide; autunite; phosphuranylite
HOST ROCK Volcanic:
Oligocene ash-flow tuffs
MAIN COMMODITIES U
OLD MAP
NO. 413
REFERENCES AEC Report 3764; Cupp and others.
1977a; Castor and Henry, 2000; Tingley, 1990; Quade and others, 1990a,b; Mason
and others, 1996; Garside, 1973; 1979; Castor and Ferdock, 2004.
NOTES
MRDS M231108
NO.
649
NAME Thunder Bird group (Nos. 1-15)
OTHER NAME
Thunderbird claims; Flagg Section; Flagg Station.
COUNTY
Washoe
LOCATION NW¼ SW¼ Sec. 35, T23N, R21E; at end of road
shown on topographic map.
UTMN 4410420
UTME
277720
DISTRICT Pyramid
QUAD Moses Rock 7.5'
(1980)
U PRODUCTION 16 tons of ore averaging 0.34% U3O8 (109
lbs. U3O8)
DEVELOPMENT Several shallow pits and a caved
adit.
RADIOACTIVITY Background = 0.05 mR/hr; High = 5.0 mR/hr.
Chip samples contained only 0.01 to 0.02% eU3O8. NBMG sample 6012 assayed 1915
ppm U and 24 ppm Th. Hurley and others (1982) report a sample with visible
uranium minerals contained 1.12% U3O8.
GEOLOGY Yellow uranium
minerals (uranophane?) occur along a tectonic(?) breccia zone which occurs in
the basal portion of the Nine Hill Tuff. The breccia zone appears to have an
attitude of N70°E, 80ºSE, and is 5-6 m wide. The most radioactive area is in the
footwall of the breccia zone. The background radioactivity is 200 cps; the
highest recorded was 10,000 cps. Oxidized pyrite(?) was noted in some samples.
The Nine Hill Tuff is a vitric welded tuff with dark, elongate compacted pumice.
Fluorine is reported to be high in samples from the prospect (Steve Hendricks,
oral commun., 8 May 80). Autunite, uranophane(?), and gummite have been
reported. The adit was driven on a gouge and breccia zone which trends N55ºE and
is vertical.
RADIOACTIVE MINERALS Autunite; gummite;
uranophane(?)
HOST ROCK Volcanic: Oligocene Nine Hill
Tuff
MAIN COMMODITIES U
NBMG SAMPLE 3320,
6012
OLD MAP NO. 410
REFERENCES AEC Report
3784; Bonham and Papke, 1969; Cupp and others. 1977a; H. F. Bonham, Jr., written
commun., 1978; Tingley, 1990; Quade and others, 1990a,b; Mason and others, 1996;
Hurley and others, 1982; Garside and others, 2003; Garside, 1973; Castor and
Ferdock, 2004; Hurley and others, 1982, no. 22.
NOTES MRDS
M231111
NO. 650
NAME Tick
Canyon group (Nos. 1-16)
OTHER NAME Tick Tock
claims
COUNTY Washoe
LOCATION SW¼ NE¼ Sec. 32,
T24N, R19E; Prospect is located in Tick Canyon one-quarter mi beyond the end of
the road. Shown at shaft symbol on Dogskin Mountain 15-minute topographic
map.
UTMN 4420890
UTME
254500
DISTRICT Stateline Peak
QUAD Dogskin
Mountain 7.5'x15' (1979)
U PRODUCTION 15 tons of ore averaging
0.21% U3O8 (64 lbs. U3O8)
DEVELOPMENT Several prospect pits,
trenches; and a short inclined shaft.
RADIOACTIVITY
Radioactivity: background = 0.015 mR/hr; carbonaceous beds = 0.03 mR/hr; high =
0.5 mR/hr. U3O8 analyses up to 0.25% were reported.
GEOLOGY A
yellow-green, fluorescent, uranium mineral (meta-autunite?) and iron-oxides are
associated with charcoal and fossil wood in tuffaceous and conglomeratic
sandstone at the base of the Nine Hill Tuff. Northwest-striking faults may also
control mineralization. Castor and Henry (2000) reported chalcedonic and
granular quartz veins that cut Nine Hill Tuff about 50 m NW of the
canyon.
RADIOACTIVE MINERALS carnotite;
meta-autunite(?)
HOST ROCK Sedimentary: charcoal and fossil
wood in tuffaceous and conglomeratic sandstone at the base of the Nine Hill
Tuff
MAIN COMMODITIES U
OLD MAP NO.
417
REFERENCES AEC Report 3785; Bonham and Papke, 1969; Hurley
and others, 1982; Cupp and others. 1977a; Mason and others, 1996; Castor and
Henry, 2000; Henry and others, 2004; Tingley, 1990; Quade and others, 1990a,b;
Garside, 1973; 1979; Castor and Ferdock, 2004.
NOTES MRDS
M231112
NO. 651
NAME
Unnamed spring
COUNTY Washoe
LOCATION NE¼ SW¼
SW¼ Sec. 22, T22N, R18E
UTMN 4404380
UTME
246740
DISTRICT Stateline Peak
QUAD Granite
Peak 7.5' (1980)
DEVELOPMENT Steel pipe discharging into stock
trough
RADIOACTIVITY 104 ppb U in water.
GEOLOGY
Spring in Cretaceous quartz monzogabbro
RADIOACTIVE MINERALS
uranium dissolved in water
HOST ROCK Intrusive(?):
Spring in Cretaceous quartz monzogabbro; spring water
MAIN COMMODITIES
U
REFERENCES Fricke, 1983
NOTES
NO. 652
NAME Verdi
lignite-uranium prospect
COUNTY Washoe
LOCATION
NE¼ Sec. 9, T19N, R18E
UTMN 4379510
UTME
245700
DISTRICT Peavine
QUAD Verdi 7.5'
(1982)
RADIOACTIVITY Less than 0.001% equivalent uranium has
been reported.
GEOLOGY One sample of lignite from the Tertiary
Truckee Formation was very slightly radioactive. Nearby lignitic beds were not
radioactive.
RADIOACTIVE MINERALS Anomalously radioactive
lignite
HOST ROCK Sedimentary: Tertiary Truckee
Formation
MAIN COMMODITIES U
OLD MAP NO.
436
REFERENCES Moore and Stephens, 1954; Mason and others,
1996; Tingley, 1990; Quade and others, 1990a,b; Garside, 1973.
NOTES
MRDS: M231173; UTMs from Quade and others (1990a,b); Garside (1973)
puts location in SE¼, Sec. 4
NO.
653
NAME Winnemucca Hills prospect
OTHER NAME
Double Jack placer claims
COUNTY Washoe
LOCATION
NE¼ NE¼ Sec. 10, T23N, R20E
UTMN 4417920
UTME
267510
QUAD Tule Peak 7.5' (1980)
DEVELOPMENT
Bulldozer cuts
RADIOACTIVITY 15 and 32 ppm
U3O8
GEOLOGY Thin clay beds in Pliocene to Pleistocene(?)
sedimentary rocks (Faulds and others, 2003) contain 15 to 32 ppm U3O8. Uranium
is in disequilibrium in favor of equivalent uranium (Cupp and others. 1977a,
1977, p. 28). The prospect is at the mouth of Mine Canyon, which drains an area
having several uranium prospects. The sedimentary rocks are cut by a strand of
the Warm Springs Valley fault system.
RADIOACTIVE MINERALS
uranium
HOST ROCK Sedimentary: Pliocene to Pleistocene(?)
sedimentary rocks
MAIN COMMODITIES U
OLD MAP NO.
406B
REFERENCES Cupp and others. 1977a; Faulds and
others, 2003; Hurley and others, 1982; Garside, 1979.
NOTES
NO. 654
NAME Woodruff
Camp
COUNTY Washoe
LOCATION Sec. 30, T39N,
R23E
UTMN 4570542
UTME 296107
QUAD
Mahogany Mtn. 7.5' (1980)
RADIOACTIVITY Up to 7 times
background. Up to 166 ppm U3O8.
GEOLOGY Anomalous radioactivity
is associated with organic material and petrified wood in light gray, Tertiary
air-fall tuff and tuffaceous sediments. Anomalous Mo and Y are
reported.
HOST ROCK Sedimentary: petrified wood in late Miocene
sedimentary rocks
MAIN COMMODITIES U
REFERENCES
Castor and others, 1982, no. 18.
NOTES UTMs from
coordinates in Castor and others (1982).
NO.
655
NAME Yellow Jacket claims
COUNTY
Washoe
LOCATION NW¼ Sec. 5, T23N, R18E
UTMN
4419580
UTME 244070
DISTRICT Stateline
Peak
QUAD Dogskin Mountain 7.5'x15'
(1979)
DEVELOPMENT Three bulldozer
cuts.
RADIOACTIVITY Background = 0.02 mR/hr; High = 0.1 mR/hr.
One select sample contained 0.06% eU3O8, and another only 69 ppm U3O8.Surface
samples contain up to 743 ppm U3O8, and over 100 tons of >100 ppm U3O8 are
reported from the subsurface (Hurley and others, 1982).
GEOLOGY
Anomalous radioactivity occurs in a sequence of upper Tertiary sandstones and
siltstones. Sporadic humic-rich areas in a cream-colored claystone are somewhat
radioactive. The prospect is in beds that are only a few feet above the
nonconformable contact with granitic rocks.
RADIOACTIVE MINERALS
Anomalously radioactive carbonaceous material
HOST ROCK
Sedimentary: upper Tertiary sandstones and siltstones
MAIN COMMODITIES
U
OLD MAP NO. 420
REFERENCES U.S.
Atomic Energy Comm. Prelim. .Reconn. Report 3786; Finch, 1967; Cupp and others.
1977a; Tingley, 1990; Quade and others, 1990a,b; Hurley and others, 1982;
Garside, 1973; 1979; Cinque, 1979.
NOTES Location taken from
Cupp and others, 1977a. Jeannie K and Cornelia C claims are 0.5-1.5 km to the
southwest, in California.
NO.
656
NAME Cherry Creek Hot Spring
OTHER NAME
Young's Hot Springs; Cherry Creek Hot Springs
COUNTY White
Pine
LOCATION Sec. 2(?), T23N, R63E; one-quarter mile southeast
of the Cherry Creek railroad station
UTMN
4417500
UTME 686900
QUAD Cherry Creek Station
7.5' (1982)
GEOLOGY This spring is reported to be slightly
radioactive.
RADIOACTIVE MINERALS Radioactive minerals
dissolved in water
HOST ROCK Sedimentary(?): spring
deposits(?); spring water
MAIN COMMODITIES U(?)
OLD MAP
NO. 438
REFERENCES Davis, 1954; Garside and
Schilling, 1979; Garside, 1973.
NOTES Exact location uncertain;
UTMs from near point ¼ mile SE of station.
NO.
657
NAME Grand Prize and Mayflower claims
OTHER
NAME Hendrickson mine; Hendrix mine; Pine View mine; Sawmill Canyon
Mine Group
COUNTY White Pine
LOCATION Sec.
8(?) or 17(?), T12N, R63E; in Sawmill Canyon, about 6 miles northeast of Lund,
at dozer cuts on hill, past Lund Mining Co. buildings
UTMN
4308410
UTME 679600
DISTRICT
Ellison
QUAD Sawmill Canyon 7.5' (1977)
DEVELOPMENT
A 30-foot adit.
RADIOACTIVITY Samples reportedly up to
0.15% U3O8; 1 mR/hr over 18-foot with a high of 2 mR/hr, both in a 30-foot
adit.
GEOLOGY A north-south brecciated zone, 125 feet wide and
5 feet thick in quartzite is anomalously radioactive. An intrusive contact with
granitic rocks is associated with the radioactivity. Also, there is a latite
porphyry intrusion nearby.
HOST ROCK Sedimentary/Intrusive:
quartzite; granitic rocks
MAIN COMMODITIES Ag, Cu, Pb,
Zn
OTHER COMMODITIES Au, F, U
OLD MAP NO.
442
REFERENCES U.S. Atomic Energy Comm. unpublished map;
Horton, 1961, p. 24; Tingley and Bentz, 1983a,b; Hose and others, 1976; Mason
and others, 1996; Tingley and Bentz, 1983a, b; Garside, 1973; 1979.
NOTES
MRDS: M031253
NO.
658
NAME Monte Neva Hot Spring
COUNTY White
Pine
LOCATION SW¼ Sec. 24 and NW¼ Sec. 25, T21N,
R63E
UTMN 4393000
UTME 688220
QUAD
Monte Neva Hot Springs 7.5' (1982)
DEVELOPMENT Cooling
and settling ponds
RADIOACTIVITY Water contains 0.03 ug/L U;
Travertine: up to 200 counts per second above background
GEOLOGY
One main spring and several smaller springs with a maximum reported
temperature of about 193°F in 20 to 40-foot high travertine mound covering 12
acres in Quaternary alluvium. The source of the radioactivity is not noted but
Tertiary(?) quartz monzonite outcrops about 3 miles to the southwest. Some
travertine from pools is reported to be anomalously radioactive (about 200
counts/sec above background; (G. Dixon, oral commun., 1980).
RADIOACTIVE
MINERALS Anomalously radioactive travertine
HOST ROCK
Sedimentary: Spring travertine.
MAIN COMMODITIES
U
REFERENCES Garside and Schilling, 1979; Felmlee and Cardigan,
1978; Hose and others, 1976; G. Dixon, oral commun., 1980.
NOTES
NO. 659
NAME
Mount Wheeler area
COUNTY White Pine
LOCATION
Center T13N, R69E; the area drained by Snake Creek.
UTMN
4314000
UTME 741000
DISTRICT
Snake
QUAD Kious Spring 7.5' (1987)
RADIOACTIVITY
ThO2 content of the allanite ranges from 1 to 2%, and from 6 to 14% in
the monazite.
GEOLOGY A 5-square-mile area of quartz monzonite
contains accessory minerals which include allanite, monazite, sphene, apatite,
zircon, garnet, and epidote. Allanite and monazite are present in amounts from
0.04 to 0.12 weight%, and vary with CaO content of the quartz monzonite. The
intrusion has been dated as 145 ± 20 Ma at this locality. The ThO2 content of
the allanite ranges from 1 to 2%, and from 6 to 14% in the monazite. Rare-earth
oxides are present in the allanite and monazite in amounts from 20 to 75
weight%.
RADIOACTIVE MINERALS monazite; thorium-bearing
allanite
HOST ROCK Intrusive: quartz monzonite
MAIN
COMMODITIES Rare Earths, Th, U
OLD MAP NO.
441
REFERENCES Staatz, 1964; Lee and Bastron, 1962; Lee and
Bastron, 1967; Schilling, 1965; Whitebread and Lee, 1961; Whitebread and others,
1962; Drewes, 1958; Whitebread, 1969; Hose and others, 1976; Garside,
1973.
NOTES UTMs from approximate center of quartz monzonite
pluton.
NO. 660
NAME
Ruggles Leader claims
COUNTY White Pine
LOCATION
S½(?), T22N, R62E; Exact location unknown
UTMN
4400610
UTME 678610
DISTRICT
Telegraph
QUAD Telegraph Peak 7.5' (1982)
DEVELOPMENT
A 22-foot-deep shaft
RADIOACTIVITY Background = 0.012
mR/hr; High = 0.20 mR/hr
GEOLOGY Scattered autunite crystals
occur in vugs and along fractures in a Tertiary latite(?). Meta-autunite also
present.
RADIOACTIVE MINERALS Autunite;
meta-autunite
HOST ROCK Volcanic: Tertiary latite(?)
MAIN
COMMODITIES U, W
NBMG SAMPLE 867
OLD MAP
NO. 439
REFERENCES AEC Report 3799; Tingley and
Bentz, 1983a,b; Hose and others, 1976; Garside, 1973.
NOTES
UTMs from Tingley and Bentz (1983a,b).
NO.
661
NAME U3O8 claims (Nos. 1-12)
OTHER NAME
Ely Uranium; Birch mine; Flurite No. 2
COUNTY White
Pine
LOCATION NW¼ Sec. 3, T20N, R62E
UTMN
4388540
UTME 672720
DISTRICT
Hunter
QUAD Telegraph Peak 7.5' (1982)
DEVELOPMENT
A 35-foot-deep vertical shaft, an open cut, Au open pit, and an unknown
amount of drilling (1954).
RADIOACTIVITY About 2.5 times
background. Samples contain 0.07 and 0.10% eU3O8 (0.082 and 0.11%
cU3O8).
GEOLOGY Anomalous radioactivity occurs along fractures
in metamorphosed Paleozoic limestones. Top meter of pit appears to be a cap of
jasperoidal material. Below the silty mudstone(?) is cut with stringers and pods
of purple microcrystalline fluorite. Surface is highly kaolinized. The locality
is reportedly a silver prospect, and is located about 1 mile southwest of the
Hunter mine, a lead-copper-silver mine.
HOST ROCK Sedimentary:
Paleozoic limestones
MAIN COMMODITIES Au, Ag, F, U
NBMG
SAMPLE 861
OLD MAP NO. 440
REFERENCES
AEC Reports 3800, 3801a; Tingley and Bentz, 1983a,b; Hose and others,
1976; Garside, 1973; Mason and others, 1996.
NOTES MRDS:
M233784; UTMs from Tingley and Bentz (1983a,b).