| GMRAP ID | 30 |
|---|---|
| Alternate names | Banner |
| Tract name | Western U.S. and Sonoran Desert Jurassic Arc (003pCu9006x) |
| Site status | deposit |
| Country | United States |
|---|---|
| State or province | Nevada |
| Geographic location | -114.766944444, 41.766944444 |
| Geologic map unit | -114.766944444, 41.766944444 |
| Nearby data |
| Deposit type | Porphyry copper |
|---|---|
| Age (Ma) | 150Ma |
| Age determination method | unknown |
| Age range | 150 Ma |
| Age reference | Singer and others (2008) |
| Minerals | actinolite, axinite, azurite/malachite, bornite, cerargyrite, chalcocite, chalcopyrite, chrysocolla, cuprite, garnet, hematite, pyrite |
| Associated rocks | aplite, breccia, hornfels, monzonite porphyry, skarn, syenite porphyry, rhyolite flow, rhyolite tuff, chert, granodiorite, limestone, quartz monzonite, quartzite, shale, siltstone |
| Tectonic setting | mixed |
| Stratigraphic age | Late Jurassic |
| Development status | Past Producer |
|---|---|
| Major commodities | Cu |
| Tonnage (Mt) | 56Mt |
| Cu grade (%) | 0.77% |
| Contained copper | 430,000t |
| Gold-Moly ratio | -9999 |
| Comments | Total production of the district: 3,751,050 lbs Cu; 1,222 oz Au; and 126,901 oz Ag. |
|---|---|
| Study area name | United States |
| References | Coats (1987); LaPointe and others (1991); Wendt and Albino (1992); Singer and others (2008) |
| Site reference | U.S. Geological Survey National Mineral Resource Assessment Team (2002) |