U.S. Geological Survey

Geologic and Grade-Tonnage Information on
Tertiary Epithermal Precious- and Base-Metal
Vein Districts Associated with Volcanic Rocks

By Dan L. Mosier, W. David Menzie, and Frank J. Kleinhampl

U.S. Geological Survey Bulletin 1666

This publication is a compilation of data on grade, tonnage, and geology
of 215 Tertiary epithermal precious- and base-metal vein districts
associated with volcanic rocks worldwide. The data were collected for
constructing both descriptive and grade-tonnage models but are given here
in tabular form for the ease of examination and comparison among districts.

Originally published in 1986, this report is presented here in
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For more information about this report contact William D. Heran at wheran@usgs.gov