| GMRAP ID | 61 |
|---|---|
| Alternate names | Pinal Ranch |
| Tract name | Western Sierra Madre Occidental and Laramide Central (003pCu3007x) |
| Site status | deposit |
| Country | United States |
|---|---|
| State or province | Arizona |
| Geographic location | -111.01913652, 33.32730338 |
| Geologic map unit | -111.01913652, 33.32730338 |
| Nearby data |
| Deposit type | Porphyry copper |
|---|---|
| Age (Ma) | 60Ma |
| Age determination method | unknown |
| Age range | 62–58 Ma |
| Age reference | Singer and others (2008) |
| Minerals | adularia, anhydrite, ankerite, bornite, chalcocite/digenite, chalcopyrite, chlorite, copper, epidote, galena, hematite/specularite, kaolinite/dickite, magnetite, marcasite, molybdenite, pyrite, rhodochrosite, sericite, sphalerite, talc, tremolite |
| Associated rocks | aplite, breccia, granodiorite, granodiorite porphyry, hornfels, quartz monzonite, quartz monzonite porphyry, quartz porphyry, skarn, rhyolite, andesite, basalt, conglomerate, granite, limestone, marble, quartz latite tuff, schist |
| Tectonic setting | continental margin |
| Stratigraphic age | Paleocene |
| Development status | Prospect |
|---|---|
| Major commodities | Cu |
| Tonnage (Mt) | 996Mt |
| Cu grade (%) | 0.498% |
| Contained copper | 4,960,000t |
| Gold-Moly ratio | -9999 |
| Comments | Hypogene ore grades 1 to 2% Cu. 100% covered by Oligocene- to Miocene-age conglomerate and Miocene-age dacite tuff, 600- to 1,200-m thick. |
|---|---|
| Study area name | United States |
| References | Long and others (1998); Manske and Paul (2002); Sell (1995); Singer and others (2008) |
| Site reference | U.S. Geological Survey National Mineral Resource Assessment Team (2002) |