GEOLOGY AND MINERAL RESOURCES OF THE LEMHI PASS THORIUM DISTRICT, IDAHO AND MONTANA, with a section on DESCRIPTION OF SELECTED THORIUM VEINS; PROFESSIONAL PAPER 1049-A
Washington, DC: United States Geological Survey/USGS/Government Printing Office/GPO, 1979. Soft cover. A description of the distribution, geologic setting, mineralogy and chemistry of the thorium veins in the Lemhi Pass district. 90 pages with photographs, maps, tables, references and index, plus the two folded plates in the rear pocket. Library stamp..... More