Bedded deposits of manganese oxides near Las Vegas, Nevada, by D. F. Hewett and B. N. Webber, 1931.

General geology, volcanic rocks, manganese-bearing sediments, structure, explorations, and manganiferous zones.

Prepared in cooperation with the USGS; originally published as University of Nevada Bulletin, v. 25, no. 6, August 1, 1931; a regional overview is in B62; additional information is in B65.

Bulletin 13, 19 pages, 9x6", 2 b/w drawings, 1 table, $2.70