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St. Anthony

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Porphyry copper prospect in Benguet, Philippines

Names and other identifiers

GMRAP ID 490
Alternate names San Antonio–Philex, Tabbac
Tract name Luzon Arc (Central Cordillera segment) (142pCu7301b)
Site status prospect

Geographic location

Country Philippines
State or province Benguet
Geographic location 120.700833333, 16.75
Geologic map unit 120.700833333, 16.75
Nearby data
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Geologic information

Deposit type Porphyry copper
Minerals anhydrite/gypsum, actinolite, azurite, bornite, biotite, chalcopyrite, chlorite, chrysocolla, clay minerals, copper, cuprite, epidote, hematite, magnetite, malachite, molybdenite, pyrite, sericite
Associated rocks andesite porphyry, diorite porphyry, andesite
Tectonic setting island arc

Commodity and development information

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

Reference information

Comments Historical resources based on drilling (68 holes), but no 43-101-compliant resources numbers exist: 101.45 Mt at 0.32% Cu, 0.4 g/t Au, 0.94 g/t Ag at 0.15% Cu cutoff for mixed sulfide and oxide ore (Motton, 2009). Singer and others (2008) listed resources for San Antonio-Philex as 170 Mt at 0.4% Cu, 0.1% Mo, 1.2 g/t Ag, and 0.7 g/t Au; exploration 1968–1981; 17 t oxidized ore at 0.52% Cu. Exposed.
Study area name East and Southeast Asia
References Jacinto (1975); Sillitoe and Gappe (1984); Motton (2009); Solfotara Mining Corp. (2012); Singer and others (2008)
Site reference Hammarstrom and others (2014)
Jacinto, R.P., 1975, Exploration of the low-grade copper deposit at Tabbac, Kibungan, Benguet Province, Philippines: Geological Society of the Philippines Journal, v. 29, no. 2, p. 1–4.
Motton, Neil, 2009, Basay coppper project—A review of the mineral resources of the area: Solfotara Mining Corp., report prepared for Adanacex Resources Inc. (Philippines) and Solfotara Mining Corp. (Canada), 74 p. and graphics. (Also available at http://www.solfotaramining.com/project/basay/basayreport-mar2009.pdf.)
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/.Solfotara Mining Corp., 2012, Tawi-Tawi copper-gold porphyry deposit: Solfotara Mining Corp. Web page, accessed August 30, 2013, at http://solfotara.com/project/tawitawi/. (Web page no longer available. See http://www.solfotaramining.com/project/tawitawi/tawi-bolo-geology.pdf.)