Grade-tonnage model of hot-spring gold-silver
Subtitle: a supplement to U.S. Geological Survey Bulletin 1693
By: by Byron R. Berger and Donald A. Singer.
Contributors: Singer, D. A.; Geological Survey (U.S.)
Series: Open-file report / United States Department of the Interior, Geological Survey -- 87-272C; U.S. Geological Survey open-file report -- 87-272-C..
Publisher: U.S. Dept. of the Interior, Geological Survey; [Books and Open-File Reports Section, distributor]
Published: 1987
Place of publication: [Denver, Colo.?]
Language: eng
Format: Microform
Subjects: Gold ores.; Silver ores.
Notes: Includes bibliographical references (p. 3).