GMRAP ID | 15 |
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Alternate names | Central, Northwest |
Tract name | Intermontane Island-Arc Cu-Au (003pCu2002x) |
Site status | deposit |
Country | United States |
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State or province | Washington |
Geographic location | -119.471211333, 48.988035747 |
Geologic map unit | -119.471211333, 48.988035747 |
Nearby data |
Deposit type | Porphyry copper |
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Age (Ma) | 179Ma |
Age determination method | unknown |
Age range | 179 Ma |
Age reference | Singer and others (2008) |
Minerals | albite, azurite/malachite, biotite, bornite, chalcocite, chalcopyrite, chlorite, epidote, garnet, hematite/specularite, magnetite, molybdenite, pyrite, pyrrhotite, sericite |
Associated rocks | aplite, breccia, diorite porphyry, quartz feldspar porphyry, skarn, gabbro, chert, dacite porphyry, greenstone, quartz diorite |
Tectonic setting | island arc |
Stratigraphic age | Jurassic |
Development status | Occurrence |
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Major commodities | Cu |
Tonnage (Mt) | 285Mt |
Cu grade (%) | 0.281% |
Mo grade (%) | 0.0147% |
Contained copper | 801,000t |
Gold-Moly ratio | -9999 |
Study area name | United States |
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References | Derkey and others (1990); Lasmanis (1995); Singer and others (2008) |
Site reference | U.S. Geological Survey National Mineral Resource Assessment Team (2002) |