The location, stratigraphy, structural history, mining districts, and geothermal resources; references and index. Prepared cooperatively by the U.S. Geological Survey. Previous studies on the mining districts of Pershing County include Bulletin 8, Bulletin 11, Bulletin 21, Bulletin 24, Bulletin 30b, Bulletin 33, and Bulletin 86; additional information found in Open-File Report 85-3.