Compiled by: David A. Davis, Ronald H. Hess, and Richard B. Jones

Assisted by: Barbara Barton and Kim Bigelow

This information should be considered preliminary.
It has not been edited or checked for completeness or accuracy.

This database is available in a dBASE III+ file format (NVGEODEX.DBF) and ASCII file format (NVGEODEX.WS) on CD-ROM (L-11, $15.00). These files can also be downloaded as a zip file by clicking here.

An online searchable database (without the remarks field) is also available.


NVGEODEX is the computerized index of the materials in the Mining District Files of the Nevada Bureau of Mines and Geology. This database was compiled using the computer program "PC File" version 5.01. The index is complete for the items in the text files and is kept current as new materials are added. Items that have been scanned and converted to Acrobat PDF file format are live linked to the document title. Clicking on the title will download the PDF file, but many of these files are large (1 to 5 or more megabytes in size) so you should be on a high speed connection if you wish to view the scanned version of the documents. The document scanning program is ongoing.

The Mining District Files consist largely of historical and current maps, reports, articles, photographs, correspondence, databases, etc. on all aspects of mining in Nevada. These have largely been donated to the NBMG over the years from individuals, companies, and other government agencies.

The files were originally created, named, and numbered using NBMG Map 37, Metal Mining Districts of Nevada (Schilling, 1976), as an index. In this system, the files are divided alphabetically by county and then alphabetically by district name within each county. The districts are then numbered from 1 to 344. Each district has a file, and each county has a general file for things that cannot easily be included in a district file.

Map 37 has been superseded by NBMG Report 47, Mining Districts of Nevada (Tingley, 1998). Report 47 is much more complete than Map 37 and is very useful in conjunction with this database. However, it does not use the numbering system of Map 37 or this database.

NVGEODEX now uses, effective with the 2003 release of this database, the district naming system found in Report 47. A new 8 digit unique ID number has been assigned to each document and map in the collection.


Each entry is listed according to one of the following ten fields:

NOTES (Not listed on Web search page)

NEW_ID and DISTRICT are the number and name used for each district file. Many districts have more than one name. These other names are cross referenced in Report 47. County General Files have an three-letter alphabetical designation usually consisting of the county name's first two letters and ending in G.

MD_NO and ITEM are old index numbers which are no longer used. The items are numbered as they were received and entered, and all items on a particular mine or area in a particular district are not necessarily numbered consecutively. Item numbers preceded by an M indicate an item filed in the large map files.

TITLE is the title of the item. Many items do not have a formal title, and an informal title was created. Most formal titles are typed out in their entirety unless they are too long for the field.

COUNTY is the present name of the county the mining district is in. Some districts span more than one county and are usually included in the county containing the bulk of the district. Also, in old items, some counties did not yet exist. Examples include Clark County, which was split from Lincoln County in 1908, Mineral County, which was split from Esmeralda County in 1911, and Pershing County, which was split from Humboldt County in 1919. Also, some counties have changed names. Examples include Roop County, which became part of Washoe County in 1883, and Ormsby County, which was consolidated with and renamed Carson City in 1969.

AUTHOR, DATE, and PAGES are the author, date, and number of pages in an item. If the author and date are not known, then the field contains "unknown" or is left blank. The author(s) is usually listed by surname and then the initials of the given and middle names. The number of pages is the number of printed pages in an item. This is sometimes approximated in some large reports. The number pages has yet to be entered for some items.

P_M_C_NAME includes mine, claim, and company names.

COMMODITY includes commodities identified.

NOTES is a brief description of the item. Note: this field is only included in the DBase III+ (.dbf) version of this data base and not in the ASCII file version (.ws). The NOTES field includes general information about the item.


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