GMRAP ID | 33 |
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Tract name | Great Basin Tertiary (003pCu9013) |
Site status | prospect |
Country | United States |
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State or province | Utah |
Geographic location | -111.379722222, 40.625 |
Geologic map unit | -111.379722222, 40.625 |
Nearby data |
Deposit type | Porphyry copper |
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Age (Ma) | 33Ma |
Age determination method | unknown |
Age range | 35–31 Ma |
Age reference | Singer and others (2008) |
Minerals | actinolite, albite, alunite, augite, biotite, chalcopyrite, chlorite, epidote, kaolinite/illite/dickite, limonite, magnetite, molybdenite, montmorillonite, pyrite, pyrophyllite, sericite |
Associated rocks | breccia, andesite porphyry, dacite porphyry, granodiorite porphyry, hornfels, skarn, andesite, calcareous siltstone, limestone, sandstone, rhyodacite, shale, volcaniclastic sedimentary rocks |
Tectonic setting | postconvergence |
Stratigraphic age | Eocene–Oligocene |
Development status | Occurrence |
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Major commodities | Cu |
Gold-Moly ratio | -9999 |
Comments | 0.2% Cu, 0.01% Mo, 0.1 to 0.6 g/t Au. |
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Study area name | United States |
References | Ballantyne and others (1996); Bromfield and others (1977); John (1989a); John (1989b); Singer and others (2008) |
Site reference | U.S. Geological Survey National Mineral Resource Assessment Team (2002) |