Grasberg area. In place estimated geologic resource about 372 Mt at 0.5% copper equivalent with a cutoff grade of 0.3% copper equivalent. The Dawagu prospect includes several exploration targets (Gold Fields Ltd., 2004): a central porphyry stockwork, skarns (open to the east in New Guinea Limestone), and epithermal-style mineralization in overlying clastics. Exploration.
Study area name
Southeast Asia and Melanesia
Indonesian Ministry of Energy and Mineral Resources (2004); Gold Fields Ltd. (2004)
Hammarstrom and others (2013)
Gold Fields Ltd., 2004, Form 6-K, Securities and Exchange Commission, Commission File Number 1-31318: accessed June 8, 2010, at http://google.brand.edgar-online. com/EFX_dll/EDGARpro.dll?FetchFilingHTML1?ID=3273615andSessionID=4UQHWSP2nUGDYl7. [Web page no longer available.]
Indonesian Ministry of Energy and Mineral Resources, 2004, Digital mineral occurrence database: Jakarta, Indonesia, Indonesian Ministry of Energy and Mineral Resources. [Proprietary data.]