Hinoba-an Group

Porphyry copper deposit in Negros Occidental, Philippines

Names and other identifiers

GMRAP ID 509
Alternate names Hinoba-an, Hinobaan
Tract name Masbate-Negros (142pCu7305)
Included sites Colet copper-gold, Don Jose (DJ), A1
Site status deposit

Geographic location

Country Philippines
State or province Negros Occidental
Geographic location 122.561529, 9.718508273
Geologic map unit 122.561529, 9.718508273
Nearby data

Geologic information

Deposit type Porphyry copper
Age (Ma) 18Ma
Age determination method unknown
Age range 20–15 Ma
Age reference Singer and others (2008)
Minerals alunite, anhydrite/gypsum, azurite/malachite, biotite, bornite, chalcanthite, chalcocite, chalcopyrite, chlorite, covellite, epidote, gold, hematite/specularite, jarosite, kaolinite/dickite, magnetite, molybdenite, pyrite, sericite
Associated rocks breccia, diorite porphyry, quartz diorite porphyry, limestone, metavolcanic rocks, andesite porphyry, basalt flow, diorite, quartz diorite, pyroclastics
Tectonic setting island arc
Stratigraphic age Miocene

Commodity and development information

Development status Prospect
Major commodities Cu, Au, Ag
Tonnage (Mt) 432Mt
Cu grade (%) 0.367%
Au grade (g/t) 0.14g/t
Ag grade (g/t) 0.34g/t
Contained copper 1,590,000t
Gold-Moly ratio -9999

Reference information

Comments 0.2% Cu cut-off grade; pre-feasibility stage in 2005. Development plan in 2012 for conventional open pit. Exposed. In Pagatban intrusive complex. Copper Development Corp. (2012) reports JORC-compliant total resources of 339.0 Mt at 0.35% Cu (0.2% Cu cutoff grade).
Study area name East and Southeast Asia
References Border and others (2003); Copper Resources Corp. (2005); Divis (1983); Malicdem (1974); Motegi (1977); Sillitoe and Gappe (1984); Singer and others (2008); Copper Development Corp. (2012)
Site reference Hammarstrom and others (2014)
Border, A., Cavey, G., and Gunning, D., 2003, Technical report on the Hinoba-an project, Negros Occidental, Republic of the Philippines: Technical report prepared for Constellation Copper Corporation, 81 p.
Copper Development Corp., 2012, Copper Development Corp.home page: accessed April 15, 2013, at http://www.copperdevelopmentcorp.com/index.html.Copper Resources Corp., 2005, Hinoba-an porphyry copper project: Copper Resources Corp., 147 p., accessed May 15, 2009, at http://www.copperresources.com/news/documents/CRC-AIM-Admission-Document.pdf.
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.
Malicdem, D.G., 1974, Notes of the geology and exploration of Hinobaan copper prospect, Negros Occidental: Geological Society of the Philippines Journal, v. 28, no. 3, p. 17–25.
Motegi, M., 1977, Porphyry copper deposits in Philippines—Their tectonic setting and present status of development: Mining Geology, v. 27, p. 221–230.
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/.