Gaby

Porphyry copper deposit in Antofagasta, Chile

Names and other identifiers

GMRAP ID 293
Alternate names Gaby Sur, Gabriela Mistral
Tract name Chile Eocene–Oligocene Chuquicamata (005pCu1010)
Site status deposit

Geographic location

Country Chile
State or province Antofagasta
Geographic location -68.818888889, -23.410833333
Geologic map unit -68.818888889, -23.410833333
Nearby data

Geologic information

Deposit type Porphyry copper
Age (Ma) 42Ma
Age determination method unknown
Age range 43–41 Ma
Age reference Singer and others (2008)
Minerals atacamite, biotite, bornite, chalcocite, chalcopyrite, chrysocolla, Cu-goethite, epidote, hematite, jarosite, neotocite, pyrite, sericite
Associated rocks breccia, quartz diorite, tonalite porphyry, andesite, granodiorite, siltstone
Tectonic setting continental margin
Stratigraphic age Eocene

Commodity and development information

Development status Prospect
Major commodities Cu
Tonnage (Mt) 3,421Mt
Cu grade (%) 0.35%
Contained copper 12,000,000t
Gold-Moly ratio -9999

Reference information

Comments 100% of the deposit is covered by piedmont gravel averaging 40 m thick. Oxide ore reserves 618 Mt at 0.41% Cu.
Study area name Andes
References Camus (2001); Codelco (2006); Minería Chilena (2008); Sillitoe (2000b); Zappettini and others (2001); Singer and others (2008)
Site reference Cunningham and others (2008)
Camus, F., 2001, Geología del yacimiento Gaby Sur: II Congress of Prospectors and Explorers, ProExplo 2001, Lima, Peru, 6 p., accessed 2008, at http://www.proexplo.com.pe/encont/opcion/e2001.htm. [Web page no longer available.]
Codelco, 2006, Corporación Nacional del Cobre de Chile (Codelco), Annual Reports 1983–2006.
Minería Chilena, 2008, Gabriela mistral, la nueva mina desarollada por Codelco: Minería Chilena, no. 321 (March 13, 2008), p. 10–33. (Also available at http://www.mch.cl/reportajes/gabriela-mistral-la-nueva-mina-desarrollada-por-codelco-2/.)
Sillitoe, R.H., 2000b, Gaby Sur, Chile, in Exploration and discovery of base-metal deposits in the Circum-Pacific region—A late 1990s update: Tokyo, Resource Geology Special Issue 21, p. 8–10.
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.