Geologic and grade-tonnage information on Tertiary epithermal precious- and base-metal vein districts associated with volcanic rocks
January 1, 1986
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.
Citation Information
Publication Year | 1986 |
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Title | Geologic and grade-tonnage information on Tertiary epithermal precious- and base-metal vein districts associated with volcanic rocks |
DOI | 10.3133/b1666 |
Authors | Dan L. Mosier, W. David Menzie, Frank J. Kleinhampl |
Publication Type | Report |
Publication Subtype | USGS Numbered Series |
Series Title | Bulletin |
Series Number | 1666 |
Index ID | b1666 |
Record Source | USGS Publications Warehouse |