Plesyumi

Porphyry copper prospect in West New Britain, Papua New Guinea

Names and other identifiers

GMRAP ID 550
Tract name Inner Melanesian Arc (New Britain) (009pCu7209)
Site status prospect

Geographic location

Country Papua New Guinea
State or province West New Britain
Geographic location 150.383333, -5.966667
Geologic map unit 150.383333, -5.966667
Nearby data

Geologic information

Deposit type Porphyry copper
Age (Ma) 23Ma
Age determination method K-Ar
Age range 24–22 Ma
Age reference Titley (1978, cites Page and Ryburn, 1977)
Minerals actinolite, biotite, bornite, calcite, cassiterite, chalcocite, chalcopyrite, chlorite, copper, covellite, cuprite, epidote, galena, gold, goethite, hematite, jarosite, kaolinite, magnetite, molybdenite, montmorillonite, pyrite, sericite, sphalerite, stannite, zeolite
Associated rocks breccia, dacite porphyry, granodiorite porphyry, quartz diorite porphyry, rhyolite tuff, limestone, andesite, conglomerate, dacite, diorite, gabbro, granodiorite, quartz diorite, sandstone, syenodiorite, volcanic breccia
Tectonic setting island arc
Stratigraphic age Oligocene–Miocene

Commodity and development information

Development status Prospect
Major commodities Cu
Gold-Moly ratio -9999

Reference information

Comments Intersections: 44 m at 0.85% Cu; 110 m at 0.31% Cu; and 101 m at 0.2% Cu.
Study area name Southeast Asia and Melanesia
References Singer and others (2008); Christopher (2002); Hine and Mason (1978); Mason and McDonald (1978); Titley (1975); Titley (1978); Vangold Resources Ltd. (2006); Page and Ryburn (1977)
Site reference Hammarstrom and others (2013)
Christopher, P.A., 2002, Technical report on the Mt. Nakru, Simuku, Sinivit, Normanby, and Feni properties, Papua New Guinea: Vancouver, British. Columbia, Peter Christopher and Associates, Inc. National Instrument 43-101 Technical Report prepared for New Guinea Gold, 47 p., accessed January 15, 2010, at http://www.newguineagold.ca/projects/nakru/reports/MtNakruTechnical0805.pdf.Hine, R., and Mason, D.R., 1978, Intrusive rocks associated with porphyry copper mineralization, New Britain, Papua New Guinea: Economic Geology, v. 73, p. 749–760. (Also available at http://dx.doi.org/10.2113/gsecongeo.73.5.749.)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 http://dx.doi.org/10.2113/gsecongeo.73.5.857.)
Page, R.W., and Ryburn, R.J., 1977, K-Ar ages and geological relations of intrusive rocks in New Britain: Pacific Geology, v. 12, p. 99–105.
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 http://pubs.usgs.gov/of/2008/1155/.Titley, S.R., 1975, Geological characteristics and environment of some porphyry copper occurrences in the southwestern Pacific: Economic Geology, v. 70, p. 499–514. (Also available at http://dx.doi.org/10.2113/gsecongeo.70.3.499.)Titley, S.R., 1978, Geologic history, hypogene features, and processes of secondary sulfide enrichment at the Plesyumi copper prospect, New Britain, Papua New Guinea: Economic Geology, v. 73, p. 768–784. (Also available at http://dx.doi.org/10.2113/gsecongeo.73.5.768.)Vangold Resources Ltd., 2006, Update summary—Mt. Nakru copper/gold/molybdenum project: Vangold Resources Ltd. press release, 9 p., accessed March 6, 2014, at http://www.vangold.ca/i/pdf/2006-05-25b_NR.pdf.