| GMRAP ID | 546 |
|---|---|
| Alternate names | Golpu, Namboanga |
| Tract name | Eastern Medial New Guinea Magmatic Belt, sub-tract b (009pCu7203b) |
| Group name | Wafi-Golpu Group |
| Included sites | Golpu, Namboanga; Group includes Wafi-Golpu deposit. |
| Site status | deposit |
| Country | Papua New Guinea |
|---|---|
| State or province | Morobe |
| Geographic location | 146.45, -6.883333 |
| Geologic map unit | 146.45, -6.883333 |
| Nearby data |
| Deposit type | Porphyry copper |
|---|---|
| Deposit subtype | Cu-Au |
| Age (Ma) | 9Ma |
| Age determination method | unknown |
| Age range | 9 Ma |
| Age reference | Singer and others (2008) |
| Minerals | actinolite, alunite, apatite, biotite, bornite, carbonate, chalcocite/digenite, chalcopyrite, chlorite, covellite, diaspore, dickite, enargite/luzonite, epidote, goethite/limonite, gold, hematite/specularite, jarosite, kaolinite/illite/dickite, magnetite, molybdenite, pyrite, pyrophyllite, sericite, smectite, tetrahedrite/tennantite, tourmaline |
| Associated rocks | andesite porphyry, breccia, dacite porphyry, diorite porphyry, quartz diorite porphyry, conglomerate, sandstone, shale |
| Tectonic setting | postconvergence |
| Stratigraphic age | Miocene |
| Development status | Prospect |
|---|---|
| Major commodities | Cu, Mo, Au |
| Tonnage (Mt) | 540Mt |
| Cu grade (%) | 0.9% |
| Mo grade (%) | 0.01% |
| Au grade (g/t) | 0.56g/t |
| Contained copper | 4,900,000t |
| Gold-Moly ratio | 60 |
| Comments | Morobe Mining JV between Harmony Gold Mining Co. and Newcrest Mining Ltd. Reported total resources for 2010 for Golpu and Nambonga (2 km from Golpu) porphyry deposits. Wafi is a high-sulfidation epithermal gold deposit associated with the same intrusive system. Minor supergene ore. Pre-feasability (2011). |
|---|---|
| Study area name | Southeast Asia and Melanesia |
| References | Andrew (1995); Corbett and Leach (1998); Freebrey (1998); Funnel (1990); Gillman (2004); Harmony Gold Mining Co. ( 2010); Newcrest Mining Ltd. (2010); Leach (1999); Lole (2005); Ryan and Vigar (1999); Tau-Loi and Andrew (1998); Singer and others (2008) |
| Site reference | Hammarstrom and others (2013) |