| GMRAP ID | 26 |
|---|---|
| Alternate names | Crater Mountain |
| Tract name | Northern Rocky Mountains (003pCu9004) |
| Included sites | Birthday |
| Site status | deposit |
| Country | United States |
|---|---|
| State or province | Wyoming |
| Geographic location | -109.630452245, 44.019333285 |
| Geologic map unit | -109.630452245, 44.019333285 |
| Nearby data |
| Deposit type | Porphyry copper |
|---|---|
| Age (Ma) | 28Ma |
| Age determination method | unknown |
| Age range | 31–26 Ma |
| Age reference | Singer and others (2008) |
| Minerals | arsenopyrite, azurite/malachite, biotite, bornite, carbonate, chalcocite, chalcopyrite, chlorite, clay minerals, epidote, ferrimolybdite, galena, gold, jarosite, limonite, magnetite, molybdenite, pyrite, sericite, sphalerite, tetrahedrite |
| Associated rocks | andesite porphyry, dacite, dacite porphyry, rhyodacite porphyry, andesite, basalt, conglomerate, granodiorite, sandstone, trachyandesite, volcanic breccia, volcaniclastics |
| Tectonic setting | continental margin |
| Stratigraphic age | Oligocene |
| Development status | Occurrence |
|---|---|
| Major commodities | Cu |
| Tonnage (Mt) | 59Mt |
| Cu grade (%) | 0.35% |
| Contained copper | 210,000t |
| Gold-Moly ratio | -9999 |
| Study area name | United States |
|---|---|
| References | Fisher (1977); Hausel (1989); Singer and others (2008) |
| Site reference | U.S. Geological Survey National Mineral Resource Assessment Team (2002) |