Porphyry copper deposit in Manus, Papua New Guinea

Names and other identifiers

Tract name Outer Melanesian Arc I - Papua New Guinea (009pCu7207)
Site status deposit

Geographic location

Country Papua New Guinea
State or province Manus
Geographic location 146.87, -2.047
Geologic map unit 146.87, -2.047
Nearby data

Geologic information

Deposit type Porphyry copper
Age (Ma) 15Ma
Age determination method unknown
Age range 15 Ma
Age reference Singer and others (2008)
Minerals alunite, biotite, bornite, carbonate, chalcopyrite, chlorite, epidote, gold, kaolinite, magnetite, molybdenite, pyrite, sericite, zeolite
Associated rocks breccia, diorite porphyry, andesite agglomerate, basalt, basaltic pyroclastics, conglomerate, limestone, tuffaceous sandstone, tuffaceous siltstone, andesite, andesite porphyry, andesitic pyroclastics, quartz diorite, quartz diorite porphyry, quartz monzodiorite
Tectonic setting island arc
Stratigraphic age Miocene

Commodity and development information

Development status Prospect
Major commodities Cu
Minor commodities Au, Ag, Mo
Tonnage (Mt) 165Mt
Cu grade (%) 0.32%
Au grade (g/t) 0.1g/t
Ag grade (g/t) 1.7g/t
Contained copper 530,000t
Gold-Moly ratio -9999

Reference information

Comments Minor Au, Ag, and Mo reported.
Study area name Southeast Asia and Melanesia
References ACA Howe International Ltd. (2010); Anonymous (1978); Jaques and Webb (1975); Mason and McDonald (1978); Rogerson and McKee (1990); Rogerson and others (1986); Singer and others (2008)
Site reference Hammarstrom and others (2013)
ACA Howe International Limited, 2010, Summary report on Manus Island: ACA Howe International Limited Web page accessed March 1, 2011, at
Anonymous, 1978, CRA Exploration (Arie prospect resources): Mining Journal, v. 291, p. 9.
Jaques, A.L., and Webb, A.W., 1975, Geochronology of porphyry copper intrusives from Manus Island, Papua New Guinea: Geological Survey of Papua New Guinea Report 75/5, 10 p.
Mason, D.R., and McDonald, J.A., 1978, Intrusive rocks and porphyry copper occurrences of the Papua New Guinea– Solomon Islands region–A reconnaissance study: Economic Geology, v. 73, p. 857–877. (Also available at
Rogerson, R., and McKee, C., 1990, Geology, volcanism and mineral deposits of Papua New Guinea, in Hughes, F.E., ed., Geology of the mineral deposits of Australia and Papua New Guinea: Melbourne, Australasian Institute of Mining and Metallurgy Monograph 14, p. 1689–1701.
Rogerson, R., Williamson, A., and Francis, G., 1986, Recent advances in the knowledge of geology, energy resources and metallogenesis of Papua New Guinea since 1981, in Regional Congress on Geology, Mineral and Energy Resources of Southeast Asia, 5th, Kuala Lumpur, Malaysia, April 9–13, 1984, GEOSEA V Proceedings, v. 2: Geological Society Malaysia Bulletin 20, 1986, p. 23–37.
Singer, D.A., Berger, V.I., and Moring, B.C., 2008, Porphyry copper deposits of the world—Database and grade and tonnage models, 2008: U.S. Geological Survey Open-File Report 2008-1155, [45] p. and digital data, accessed December 31, 2013, at