Geologic and grade-tonnage information on Tertiary epithermal precious- and base-metal vein districts associated with volcanic rocks
Bulletin
1666
By: Dan L. Mosier, W. David Menzie, and Frank J. Kleinhampl
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Abstract
Data on grades, tonnages, and geology of selected Tertiary epithermal precious- and base-metal vein districts associated with volcanic rocks were tabulated for ease of examination and comparison of characteristics between districts. There are 215 districts listed, with a cumulative tonnage of 709 million metric tons and average grades of 4.7 g/t Au, 224 g/t Ag, 0.16 percent Cu, 0.55 percent Pb, and 0.83 percent Zn, representing about 60 percent of world districts.
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Geologic and grade-tonnage information on Tertiary epithermal precious- and base-metal vein districts associated with volcanic rocks |
| Series title | Bulletin |
| Series number | 1666 |
| DOI | 10.3133/b1666 |
| Year Published | 1986 |
| Language | ENGLISH |
| Publisher | U.S. G.P.O., |
| Description | iii, 39 p. :maps ;28 cm. |