GMRAP ID | 578 |
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Tract name | Gangdese (142pCu8712) |
Site status | deposit |
Country | China |
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State or province | Xizang |
Geographic location | 91.764706, 29.70282 |
Geologic map unit | 91.764706, 29.70282 |
Nearby data |
Deposit type | Porphyry copper |
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Deposit subtype | Cu-Mo |
Age (Ma) | 14.78Ma |
Age determination method | Re-Os molybdenite |
Age range | 14.78 ±0.33 Ma (Re-Os molybdenite); 14.2 ±0.2 Ma and 14.1 ±0.3 Ma (U-Pb zircon SHRIMP) |
Age reference | Tang and others (2010) |
Minerals | Ag-Bi galena, anglesite, biotite, bornite, chalcopyrite, chlorite, covellite, diopside, epidote, gold, garnet, hessite, limonite, malachite, molybdenite, pyrite, pyrrhotite, sericite, sphalerite, tetrahedrite, wollastonite |
Associated rocks | adamellite porphyry, felsic dike, hornfels, skarn, calcareous slate, reef limestone, sandstone, sandy slate |
Tectonic setting | postconvergence |
Stratigraphic age | Miocene |
Development status | Producer |
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Major commodities | Cu, Mo, Ag |
Tonnage (Mt) | 1,006Mt |
Cu grade (%) | 0.39% |
Mo grade (%) | 0.046% |
Au grade (g/t) | 0.095g/t |
Ag grade (g/t) | 5.6g/t |
Contained copper | 3,900,000t |
Gold-Moly ratio | 2.1 |
Comments | Tibet. Gangdese porphyry copper belt. Newly discovered porphyry deposit underlies skarn/hornfels body. Resource for combined skarn and hornfels ore of 1.006 Bt at 0.39% Cu, 0.046% Mo, 0.095 g/t Au, and 5.6 g/t Ag; classed as deposit even though still open; porphyry copper, skarn-related? Mining. |
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Study area name | Tibetan Plateau |
References | Deng and others (2009); Beaudoin and others (2005); Li, Rui and others (2005); Peng and others (2001); Qu and others (2007); Rui, Wang and Wang (2002b); Singer and others (2008); China Gold International (2010); Tang, Wang, Wang, and others (2010) |
Site reference | Ludington, Hammarstrom, and others (2012) |