| GMRAP ID | 544 |
|---|---|
| Tract name | Eastern Medial New Guinea Magmatic Belt, sub-tract b (009pCu7203b) |
| Site status | deposit |
| Country | Papua New Guinea |
|---|---|
| State or province | Madang |
| Geographic location | 145.166667, -5.75 |
| Geologic map unit | 145.166667, -5.75 |
| Nearby data |
| Deposit type | Porphyry copper |
|---|---|
| Age (Ma) | 7Ma |
| Age determination method | unknown |
| Age range | 8–6 Ma |
| Age reference | Singer and others (2008) |
| Minerals | anhydrite, biotite, bornite, carbonate, chalcocite, carbonate, chalcopyrite, chlorite, epidote, galena, gold, hematite/specularite, kaolinite/illite, magnetite, molybdenite, montmorillonite, pyrite, sericite, sphalerite, zeolite |
| Associated rocks | breccia, dacite porphyry, granodiorite porphyry, quartz monzonite porphyry, tonalite porphyry, granodiorite, quartz diorite porphyry, quartz monzonite |
| Tectonic setting | postconvergence |
| Stratigraphic age | Miocene |
| Development status | Prospect |
|---|---|
| Major commodities | Cu |
| Tonnage (Mt) | 1,639Mt |
| Cu grade (%) | 0.35% |
| Mo grade (%) | 0.01% |
| Au grade (g/t) | 0.07g/t |
| Ag grade (g/t) | 1.5g/t |
| Contained copper | 5,700,000t |
| Gold-Moly ratio | 7 |
| Comments | Exposed. The Yandera porphyry system is in the core of the Miocene Bismarck intrusive complex within the Ramu fault zone. Tonnages and grade (2011 JORC-compliant data) reported for the lowest reported cut-off (0.20% CuEq, where CuEq is calculated as Cu+(10*Mo). Feasibility (2011). |
|---|---|
| Study area name | Southeast Asia and Melanesia |
| References | Clark (1993); Lole (2005); Marengo Mining Ltd. (2005); Marengo Mining Ltd. (2011); Titley and others (1978); Watmuff (1978); Singer and others (2008); Hyland and others (2012) |
| Site reference | Hammarstrom and others (2013) |