Copaquire

Porphyry copper prospect in Tarapacá, Chile

Names and other identifiers

GMRAP ID 280
Tract name Chile Eocene–Oligocene Chuquicamata (005pCu1010)
Site status prospect

Geographic location

Country Chile
State or province Tarapacá
Geographic location -68.885277778, -20.901666667
Geologic map unit -68.885277778, -20.901666667
Nearby data

Geologic information

Deposit type Porphyry copper
Age (Ma) 35Ma
Age determination method unknown
Age range 36–34 Ma
Age reference Singer and others (2008)
Minerals alunite, atacamite, biotite, chalcanthite, chalcocite, chalcopyrite, chlorite, chrysocolla, epidote, ferrimolybdite, garnet, gypsum, magnetite, molybdenite, montmorillonite, pyrite, pyrophyllite, sericite, tennantite, tourmaline
Associated rocks breccia, dacite, quartz monzonite porphyry, carbonaceous shale, diorite porphyry, granodiorite, quartz diorite porphyry, sandstone
Tectonic setting continental margin
Stratigraphic age Eocene–Oligocene

Commodity and development information

Development status Prospect
Major commodities Cu, Mo
Gold-Moly ratio -9999

Reference information

Comments Total inferred resources November 30, 2011 of 102.1 Mt at 0.32% Cu, 0.020% Mo; contained copper 327,000 t. Resources previously reported 50 Mt at 0.13% Mo, x% Cu; production of 115,000 t at 3.0% Cu; reserves 250,000 t at 1% Cu.
Study area name Andes
References Clark and others (1998); Hollister and Bernstein (1975); Maksaev and others (1988); Oyarzun (1985); Zappettini and others (2001); Singer and others (2008)
Site reference Cunningham and others (2008)
Clark, A.H., Archibald, D.A., Lee, A.W., Farrar, Edward, and Hodgson, C.J., 1998, Laser probe 40Ar/39Ar ages of early- and late-stage alteration assemblages, Rosario porphyry copper-molybdenum deposit, Collahuasi district, I Region, Chile: Economic Geology, v. 93, p. 326–337. (Also available at http://dx.doi.org/10.2113/gsecongeo.93.3.326.)
Hollister, V.F., and Bernstein, M., 1975, Copaquire, Chile—Its geologic setting and porphyry copper deposit: Transactions of the Society of Mining Engineers of AIME, v. 258, no. 2, p. 137–142.
Maksaev, V., Zentilli, M., and Reynolds, P., 1988, Geochronologia Ar-Ar de depositos de tipo porfido cuprifero del Norte Grande de Chile: Congreso Geológico Chileno, 5th, Concepción, 1994, Actas, v. 1, p. B109–B133.
Oyarzun, J.M., 1985, La metallogenie Andine; cadre geologique, petrologique et geochemique et essai d’interpretation: Paris, These Docteur d’Etat, 864 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/.
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.