Porphyry copper deposit in Cuzco, Peru

Names and other identifiers

Tract name Peru Eocene–Oligocene Antapaccay (005pCu1009)
Site status deposit

Geographic location

Country Peru
State or province Cuzco
Geographic location -71.346666667, -14.96
Geologic map unit -71.346666667, -14.96
Nearby data

Geologic information

Deposit type Porphyry copper
Age (Ma) 36Ma
Age determination method unknown
Age range 38.4–34 Ma
Age reference Singer and others (2008)
Minerals anhydrite/gypsum, azurite/malachite, biotite, bornite, chalcocite, chalcopyrite, chlorite, chrysocolla, clay, copper, cuprite, epidote, garnet, kaolinite, magnetite, molybdenite, pyrite, sericite, tennantite
Associated rocks andesite porphyry, breccia, dacite porphyry, diorite, granodiorite porphyry, monzonite porphyry, quartz monzonite porphyry, skarn, conglomerate, limestone, sandstone, siltstone
Tectonic setting continental margin
Stratigraphic age Eocene

Commodity and development information

Development status Prospect
Major commodities Cu, Mo, Au
Tonnage (Mt) 472Mt
Cu grade (%) 0.74%
Mo grade (%) 0.006%
Au grade (g/t) 0.15g/t
Contained copper 3,500,000t
Gold-Moly ratio 20

Reference information

Comments Resource as of March 2, 2007, at 0.4% Cu cut-off grade. Andahuaylas-Yauri belt. Large post-mineral diatreme. Exposed. Cu-Au in Singer and others' (2005) database.
Study area name Andes
References Jones and others (2007); Perelló, Carlotto and others (2003); Sillitoe (2000a); Stryas (2000); Xstrata Copper (2007); Zappettini and others (2001); Singer and others (2008); Singer and others (2005)
Site reference Cunningham and others (2008)
Jones, B., Kamenetsky, V., Davidson, P., Allen, C., 2007, Antapaccay Cu-Au deposit—A product of Andean tectonism and evolving magmatism, late Eocene–early Oligocene Abancay batholith, Altiplano, southern Peru [abs.], in Ores and Orogenesis, a symposium honoring the career of William R. Dickinson: Geological Society of America, Program with Abstracts, Tucson, Arizona, p. 132–133.
Perelló, José; Carlotto, Victor; Zárate, Alberto; Ramos, Pedro; Rosso, Héctor; Neyra, Carlos; Caballero, Alberto; Fuster, Nicolás; and Muhr, Ricardo, 2003, Porphyry-style alteration and mineralization of the middle Eocene to early Oligocene Andahuaylas-Yauri belt, Cuzco region, Peru: Economic Geology, v. 98, p. 1575–1605. (Also available at
Sillitoe, R.H., 2000a, Antapaccay, Peru, in Exploration and discovery of base-metal deposits in the Circum-Pacific region—A late 1990s update: Tokyo, Resource Geology Special Issue 21, p. 11–13.
Singer, D.A., Berger, V.I., and Moring, B.C., 2005, Porphyry copper deposits of the world—Database, map, and grade and tonnage models: U.S. Geological Survey Open-file Report 2005-1060, [9] p. and digital data, accessed December 31, 2013, at, 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
Stryas, B., 2000, Antapaccay porphyry copper-gold project, Peru: Data Metallogenica, accessed 2008, at files/AntapaccayCu_depscrip.pdf. [Web page no longer available.]
XStrata Copper, 2007: XStrata Copper press release, 6 p., accessed 2008, at [Web page no longer available.]
Zappettini, Eduardo; Miranda-Angles, Vitaliano; Rodriguez S., Carolina; Palacios, Oscar; Cocking,Robert; Godeas, Marta; Uribe-Zeballos, Hernán; Vivallo S., Waldo; Paz, M.M.; Seggiaro, Raúl; Heuschmidt, Bertand; Gardeweg P., Moyra; Boulangger Rondoy, Elmere; Korzeniewski, Lidia I.; Mpodozis M., Constantino; Carpio R., Mario; and Rubiolo, Daniel, 2001, Mapa metalogénico de laregión fronteriza entre Argentina, Bolivia, Chile y Perú (14ºS–28ºS): Santiago, Chile, Servicio Nacional de Geología y Minería, Publicacion Geológica Multinacional No. 2, 222 p., 1 map, scale 1:1,000,000.