Geologic and grade-tonnage Information on Tertiary epithermal precious- and base-metal vein districts associated with volcanic rocks.
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| Main Author: | |
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| Other Authors: | , |
| Format: | Book |
| Language: | English |
| Published: |
Washington
United States Government Print.Office
1986
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| Series: | U.S. Geological Survey Bulletin
Nr 1666 |
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