Assessment of undiscovered deposits of gold, silver, copper, lead, and zinc in the United States
Subtitle: A portable document (PDF) recompilation of USGS OFR 96-96 ... (U.S. Geological Survey open-file report)
Publisher: U.S. Dept. of the Interior, U.S. Geological Survey
Published: 2002
Language: eng
Format: Unknown Binding
ISBN-13: 9780607995893
Description: 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.