Assessment of Undiscovered Deposits of Gold, Silver, Copper, Lead, and Zinc in the United States
A Portable Document (PDF) Recompilation of USGS OFR 96-96 and Circular 1178Book - 2002
Contains the results of a national mineral resource assessment study. Identifies regional tracts of ground believed to contain most of the nation's undiscovered resources of gold, silver, copper, lead, and zinc in conventional types of deposits. Includes probabilistic estimates of the amounts of these resources. Contains a table of the significant known deposits in the tracts, and descriptions of the mineral deposit models used for the assessment.
Publisher: Reston, Va. : U.S. Dept. of the Interior, U.S. Geological Survey, 2002
Branch Call Number: DOC I 19.76:02-198
Characteristics: 1 CD-ROM ; 4 3/4 in
Alternative Title: Title from spine of container: National mineral resource assessment