Mapula Group

Porphyry copper (Cu-Au) deposit in Compostela Valley, Philippines

Names and other identifiers

Alternate names Mapula
Tract name Philippine Arc (142pCu7309)
Included sites Tagpura, Kuaryan
Site status deposit

Geographic location

Country Philippines
State or province Compostela Valley
Geographic location 126.013736987, 7.354681008
Geologic map unit 126.013736987, 7.354681008
Nearby data

Geologic information

Deposit type Porphyry copper
Deposit subtype Cu-Au
Age determination method Geologic inference
Age range mid-Miocene–late Miocene
Age reference Singer and others (2008)
Minerals actinolite, bornite, chalcopyrite, chlorite, gold, kaolinite, molybdenite, pyrite, sericite
Associated rocks andesite porphyry, diorite, andesite, andesite pyroclastics, volcaniclastics
Tectonic setting island arc
Stratigraphic age mid-Miocene–late Miocene

Commodity and development information

Development status Prospect
Major commodities Cu, Au
Tonnage (Mt) 78Mt
Cu grade (%) 0.4%
Au grade (g/t) 0.37g/t
Ag grade (g/t) 3.6g/t
Contained copper 310,000t
Gold-Moly ratio -9999

Reference information

Comments Exposed. Exploration and production.
Study area name East and Southeast Asia
References Bolaño (2010); Fernandez (1986); Saegart and Lewis (1976); Sillitoe and Gappe (1984); Singer and others (2008)
Site reference Hammarstrom and others (2014)
Bolaño, Marcelo, 2010, 2010 Report for economic assessment and ore reserve estimation of the gold vein deposits of Maco Mines in Maco, Compostela Valley Province, Mindanao Island, Philippines: Technical report, accessed August 20, 2010, at [Web page no longer available.]
Fernandez, J.C., 1986, Geology and mineral resources of the Philippines, Volume 2, Mineral Resources: Manila, [Philippines] Mines and Geosciences Bureau, 446 p.
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