GMRAP ID | 76 |
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Tract name | Western Sierra Madre Occidental and Laramide Central (003pCu3007x) |
Included sites | Childs-Altwilckle pipe |
Site status | deposit |
Country | United States |
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State or province | Arizona |
Geographic location | -110.48, 32.75 |
Geologic map unit | -110.48, 32.75 |
Nearby data |
Deposit type | Porphyry copper |
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Age (Ma) | 58Ma |
Age determination method | unknown |
Age range | 59–57 Ma |
Age reference | Singer and others (2008) |
Minerals | anhydrite/gypsum, apatite, azurite/malachite, biotite, bornite, chalcocite, chalcopyrite, chlorite, covellite, cuprite, enargite, epidote, ferrimolybdite, galena, hematite/specularite, kaolinite/illite, limonite, magnetite, molybdenite, montmorillonite, pyrite, sericite, sphalerite, tennantite, tourmaline |
Associated rocks | breccia, dacite porphyry, diorite porphyry, conglomerate, limestone, quartzite, sandstone, shale, andesite, andesite breccia, andesite tuff, granodiorite |
Tectonic setting | continental margin |
Stratigraphic age | Paleocene |
Development status | Occurrence |
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Major commodities | Cu |
Tonnage (Mt) | 75Mt |
Cu grade (%) | 0.75% |
Mo grade (%) | 0.0046% |
Contained copper | 560,000t |
Gold-Moly ratio | -9999 |
Comments | Exposed. |
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Study area name | United States |
References | Guthrie and Moor (1978); Kuhn (1941); Kuhn (1951); McCandless and Ruiz (1993); Titley (1993); Singer and others (2008) |
Site reference | U.S. Geological Survey National Mineral Resource Assessment Team (2002) |