Porphyry copper deposit in Abra, Philippines

Names and other identifiers

Alternate names Kilong-Olao
Tract name Luzon Arc (Central Cordillera segment) (142pCu7301b)
Site status deposit

Geographic location

Country Philippines
State or province Abra
Geographic location 120.858312987, 17.387370017
Geologic map unit 120.858312987, 17.387370017
Nearby data

Geologic information

Deposit type Porphyry copper
Minerals bornite, chalcopyrite, pyrite
Associated rocks quartz diorite porphyry, quartz diorite
Tectonic setting island arc

Commodity and development information

Development status Prospect
Tonnage (Mt) 50Mt
Cu grade (%) 0.35%
Contained copper 180,000t
Gold-Moly ratio -9999

Reference information

Comments Historical estimate for tonnage and grade. Not 43-101 compliant.
Study area name East and Southeast Asia
References Almogela (1974); Fernandez (1986); Sillitoe and Gappe (1984); Singer and others (2008)
Site reference Hammarstrom and others (2014)
Almogela, D.H., 1974, Geologic environment and economic possibilities of porphyry copper deposits in the Philippines: Geological Society of the Philippines Journal, v. 28, no. 3, p. 1–16.
Fernandez, J.C., 1986, Geology and mineral resources of the Philippines, Volume 2, Mineral Resources: Manila, [Philippines] Mines and Geosciences Bureau, 446 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