Aya Aya

Porphyry copper deposit in Negros Oriental, Philippines

Names and other identifiers

Tract name Masbate-Negros (142pCu7305)
Site status deposit

Geographic location

Country Philippines
State or province Negros Oriental
Geographic location 122.7, 9.433333333
Geologic map unit 122.7, 9.433333333
Nearby data

Geologic information

Deposit type Porphyry copper
Age determination method Geologic inference
Age range early Miocene
Age reference Singer and others (2008)
Minerals actinolite, biotite, bornite, chalcopyrite, hematite, limonite, magnetite, malachite, molybdenite, neotocite, pyrite
Associated rocks quartz diorite porphyry, diorite porphyry, dacite porphyry, andesite, basalt
Tectonic setting island arc
Stratigraphic age early Miocene

Commodity and development information

Development status Prospect
Major commodities Cu, Mo, Au, Ag
Tonnage (Mt) 40Mt
Cu grade (%) 0.3%
Mo grade (%) 0.022%
Au grade (g/t) 0.08g/t
Ag grade (g/t) 1.5g/t
Contained copper 120,000t
Gold-Moly ratio 4

Reference information

Comments Exposed.
Study area name East and Southeast Asia
References Divis (1983); Sillitoe and Gappe (1984); Singer and others (2008)
Site reference Hammarstrom and others (2014)
Divis, A.F., 1983, The geology and geochemistry of Philippine porphyry copper deposits, in Hayes, D.E., ed. The tectonic and geologic evolution of Southeast Asia seas and islands—Part 2: Washington, D.C., American Geophysical Union, Geophysical Monograph 27, p. 173–216.
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/.