Batong Buhay Group

Porphyry copper (Cu-Au) deposit in Kalinga, Philippines

Names and other identifiers

GMRAP ID 484
Alternate names Batang Buhay, Batang Buhay Gold Project
Tract name Luzon Arc (Central Cordillera segment) (142pCu7301b)
Included sites Dickson copper-gold prospect
Site status deposit

Geographic location

Country Philippines
State or province Kalinga
Geographic location 121.066595647, 17.354492952
Geologic map unit 121.066595647, 17.354492952
Nearby data

Geologic information

Deposit type Porphyry copper
Deposit subtype Cu-Au
Age determination method Geologic inference
Age range late Miocene
Age reference Singer and others (2008)
Minerals alunite, anhydrite/gypsum, azurite/malachite, biotite, bornite, chalcocite, chalcopyrite, chlorite, chrysocolla, covellite, enargite, epidote, galena, gold, hematite/specularite, kaolinite, magnetite, molybdenite, pyrite, sericite, silver, sphalerite, tetrahedrite
Associated rocks breccia, quartz diorite porphyry, diorite, tonalite, andesite, basalt
Tectonic setting island arc
Stratigraphic age late Miocene

Commodity and development information

Development status Past Producer
Major commodities Cu, Mo, Au, Ag
Tonnage (Mt) 87Mt
Cu grade (%) 0.599%
Mo grade (%) 0.002%
Au grade (g/t) 0.31g/t
Ag grade (g/t) 2g/t
Contained copper 520,000t
Gold-Moly ratio 200

Reference information

Comments Intrusive diorite body hosts porphyry copper type mineralization and fissure fillings.Volcanic rocks (silicified porphyritic andesite?). Ore minerals are chalcopyrite, bornite, chalcocite, and pyrite with minor amounts of sphalerite, gold and silver. Gangue minerals are quartz, clay and calcite. Mined by block-caving in the 1980s.
Study area name East and Southeast Asia
References Fernandez (1986); Philippines Mines and Geosciences Bureau (2007); Saegart and Lewis (1976); Sillitoe and Gappe (1984); Singer and others (2008)
Site reference Hammarstrom and others (2014)
Fernandez, J.C., 1986, Geology and mineral resources of the Philippines, Volume 2, Mineral Resources: Manila, [Philippines] Mines and Geosciences Bureau, 446 p.
[Philippines] Mines and Geosciences Bureau, 2007, Priority mineral development projects of the Philippines, 27 p.: [Philippines] Mines and Geosciences Bureau report, available at http://www.mgb.gov.ph/revitalization_files/revitalization_23projectsprofile.pdf.
Saegart, W.E., and Lewis, D.E., 1976, Characteristics of Philippine porphyry copper deposits and summary of current production and resources: AIME Annual Meeting, February 22–26, 1976, Las Vegas, Preprint No. 76–1–79, 46 p.
Sillitoe, R.H., and Gappe, I.M., Jr., 1984, Philippine porphyry copper deposits—Geologic setting and characteristics: Committee for Co-ordination of Joint Prospecting for Mineral Resources in Asian Offshore Areas (CCOP), CCOP Technical Publication 14, 89 p.
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/.