GMRAP ID | 3 |
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Tract name | Western Alaska Range (003pCu5004) |
Site status | prospect |
Country | United States |
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State or province | Alaska |
Geographic location | -154.315, 60.353055556 |
Geologic map unit | -154.315, 60.353055556 |
Nearby data |
Deposit type | Porphyry copper |
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Age (Ma) | 60Ma |
Age determination method | unknown |
Age range | 63–56 Ma |
Age reference | Singer and others (2008) |
Minerals | arsenopyrite, chalcopyrite, chlorite, galena, pyrite, pyrrhotite, sericite, tetrahedrite |
Associated rocks | breccia, dacite porphyry, andesite, basalt, granite porphyry |
Tectonic setting | continental margin |
Stratigraphic age | Paleocene |
Development status | Occurrence |
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Major commodities | Cu |
Gold-Moly ratio | -9999 |
Comments | Undrilled estimate of 91 Mt at 0.25% Cu, 0.17% Mo, 470 g/t Ag. |
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Study area name | United States |
References | Nelson and others (1983); Nelson and others (1985); Nokleberg and others (1987); Singer and others (2008) |
Site reference | U.S. Geological Survey National Mineral Resource Assessment Team (2002) |