Far Southeast-Bato Tabio

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

Names and other identifiers

GMRAP ID 487
Alternate names Mankayan mineral district
Tract name Luzon Arc (Central Cordillera segment) (142pCu7301b)
Site status deposit

Geographic location

Country Philippines
State or province Benguet
Geographic location 120.783333334, 16.858333334
Geologic map unit 120.783333334, 16.858333334
Nearby data

Geologic information

Deposit type Porphyry copper
Deposit subtype Cu-Au
Age (Ma) 1.4Ma
Age determination method unknown
Age range 1.6–1.1 Ma
Age reference Singer and others (2008)
Minerals alunite, anhydrite/gypsum, barite, biotite, bornite, chalcocite, chalcopyrite, chlorite, covellite, diaspore, electrum, enargite/luzonite, galena, gold, hematite/specularite, kaolinite/illite, magnetite, marcasite, molybdenite, montmorillonite, pyrite, pyrophyllite, sericite, sphalerite, sulfur, tellurides, tetrahedrite/tennantite, tourmaline
Associated rocks breccia, quartz diorite porphyry, andesite, basalt, limestone, schist, tonalite, dacite, dacite porphyry, dacite pyroclastics, diorite, quartz diorite, metavolcanic rocks
Tectonic setting island arc
Stratigraphic age Pleistocene

Commodity and development information

Development status Prospect
Major commodities Cu
Tonnage (Mt) 657Mt
Cu grade (%) 0.65%
Au grade (g/t) 0.94g/t
Ag grade (g/t) 0.93g/t
Contained copper 4,300,000t
Gold-Moly ratio -9999

Reference information

Comments Near Lepanto (Naukayan). 90% covered. Late Miocene-Pleistocene magmatism emplaced porphyry copper-related quartz diorite stocks and dacitic pyroclastics and porphyries.
Study area name East and Southeast Asia
References Arribas and others (1995); Claveria (2001); Claveria and others (1999); Disini and others (1998); Garcia (1991); Hedenquist (1999); Hedenquist and others (1998); Malicdem (1975); Sajona and others (2002); Shinohara and Hedenquist (1997); Mineral Resource Information Series No. 5, Lepanto Consolidated Mining Co. (2008); Singer and others (2008)
Site reference Hammarstrom and others (2014)
Arribas, Antonio, Jr.; Hedenquist, J.W.; Itaya, Tetsumaru; Okada, Toshinori; Concepción, R.A.; and Garcia, J.S., Jr., 1995, Contemporaneous formation of adjacent porphyry and epithermal Cu- Au deposits over 300 ka in northern Luzon, Philippines: Geology, v. 23, p. 333–340. (Abstract available at http://geology.gsapubs.org/content/23/4/337.abstract.)Claveria, R.J.R., 2001, Mineral paragenesis of the Lepanto copper and gold and the Victoria gold deposits, Mankayan mineral district, Philippines: Resource Geology, v. 51, no. 2, p. 97–106. (Also available at http://dx.doi.org/10.1111/j.1751-3928.2001.tb00084.x.)
Claveria, R.J., Cuison, A.G., and Andam, B.V., 1999, The Victoria gold deposit in the Mankayan mineral district, Luzon, Philippines, in Weber, Graeme, ed., PACRIM ‘99 Congress—International Congress on Earth Science, Exploration and Mining around the Pacific Rim, Bali, Indonesia, October 10–13, 1999, Proceedings: Carlton, Australia, Australasian Institute of Mining and Metallurgy Publication Series no. 4/99, p. 73–80.
Disini, A.F., Robertson, B.M., and Claveria, R.J.R., 1998, The Mankayan mineral district, Luzon Philippines, in Porter, T.M., ed., Porphyry and hydrothermal copper & gold deposits—A global perspective, Conference Proceedings: Australian Mineral Foundation, Glenside, South Australia, p. 75–88.
Garcia, J.S., Jr., 1991, Geology and mineralization characteristics of the Mankayan mineral district, Benguet, Philippines: Geological Survey of Japan Report 277, p. 21–30.
Hedenquist, J.W., 1999, Far Southeast-Lepanto porphyry-epithermal Cu-Au deposits, Philippines: Coupled hydrothermal processes between the porphyry and high-sulfidation environments, in Weber, Graeme, ed., PACRIM ‘99 Congress—International Congress on Earth Science, Exploration and Mining around the Pacific Rim, Bali, Indonesia, October 10–13, 1999, Proceedings: Carlton, Australia, Australasian Institute of Mining and Metallurgy Publication Series no. 4/99, p. 61–63.
Hedenquist, J.W., Arribas, Antonio, and Reynolds, T.J., 1998, Evolution of an intrusion- centered hydrothermal system: Far Southeast-Lepanto porphyry and epithermal Cu-Au deposits, Philippines: Economic Geology, v. 93, p. 373–404. (Also available at http://dx.doi.org/10.2113/gsecongeo.93.4.373.)Lepanto Consolidated Mining Co., 2008, Far Southeast: Lepanto Consolidated Mining Co. Web page, accessed May 15, 2012, at http://www.lepantomining.com/far_southeast.html.
Malicdem, D.G., 1975, Notes on the geology and exploration of Colossal-Lepanto copper project, Gen. Nakar, Quezon: Geological Society of the Philippines Journal, v. 29, no.1, p. 13–19.
[Philippines] Mines and Geosciences Bureau, 2005, Copper: [Philippines] Mines and Geosciences Bureau Mineral Resource Information Series No. 5, 23 p.
Sajona, F.G.; Izawa, Eiji; Motomura, Yoshinobu; Imai, Akira; Sakakibara, Hiroyuki; and Watanabe, Koichiro, 2002, Victoria carbonate-base metal gold deposit and its significance in the Mankayan mineral district, Luzon, Philippines: Resource Geology, v. 52, no. 4, p. 315–328. (Also available at http://dx.doi.org/10.1111/j.1751-3928.2002.tb00142.x.)Shinohara, H., and Hedenquist, J.W., 1997, Constraints on magma degassing beneath the Far Southeast porphyry Cu–Au deposit: Philippines Journal of Petrology, v. 38, no. 12, p. 1741–1752. (Also available at http://petrology.oxfordjournals.org/content/38/12/1741.full.pdf.)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/.