El Galeno

Porphyry copper deposit in Cajamarca, Peru

Names and other identifiers

Alternate names Galeno
Tract name Peru-Ecuador middle–late Miocene La Granja (005pCu1006)
Site status deposit

Geographic location

Country Peru
State or province Cajamarca
Geographic location -78.316666667, -7.016666667
Geologic map unit -78.316666667, -7.016666667
Nearby data

Geologic information

Deposit type Porphyry copper
Age (Ma) 17Ma
Age determination method unknown
Age range 17.50–16.53 Ma (Age of porphyry stocks.)
Age reference Davies and Williams (2005)
Minerals alunite, arsenopyrite, biotite, bornite, brochantite, chalcocite, chalcopyrite, chlorite, chrysocolla, copper, covellite, digenite, epidote, fluorite, gold, hematite, illite, kaolinite, magnetite, mackinawite, malachite, molybdenite, muscovite, pyrite, pyrrhotite, tennantite/tetrahedrite
Associated rocks breccia, diorite porphyry, quartz diorite porphyry,andesite, basalt, dacite,limestone, marl, quartzite, rhyolite, sandstone, siltstone
Tectonic setting continental margin
Stratigraphic age Miocene

Commodity and development information

Development status Prospect
Major commodities Cu, Mo, Au, Ag
Tonnage (Mt) 863Mt
Cu grade (%) 0.474%
Mo grade (%) 0.01%
Au grade (g/t) 0.11g/t
Ag grade (g/t) 2.3g/t
Contained copper 4,090,000t
Gold-Moly ratio 10

Reference information

Comments Resource as of September 26, 2006, at 0.4% Cu eq. cut-off grade. Exposed.
Study area name Andes
References Davies (2000); Davies and Williams (2005); Lumina Copper Corp. (2004a); Nicolson (2003); Northern Peru Copper Corp. (2007b); Singer and others (2008)
Site reference Cunningham and others (2008)
Davies, C.R., 2000, Au-Cu deposits in the Cajamarka region, northern Peru [abs.]: Geological Society of America Annual Meeting, 96th, Abstracts with Programs, v. 32, no. 6, p. 9.
Davies, C.R., and Williams, P.J., 2005, The El Galeno and Michiquillay porphyry Cu-Au-Mo deposits—Geological descriptions and comparison of Miocene porphyry systems in the Cajamarca district, northern Peru: Mineralium Deposita, v. 40, p. 598–616. (Also available at http://dx.doi.org/10.1007/s00126-005-0026-6.)
Lumina Copper Corp., 2004a, El Galeno property: Lumina Copper Corp. press release, March 1, 2004, 4 p., accessed 2008, at http://www.luminacopper.com/s/ElGalenoProperty.asp. [Web page no longer available.]
Nicolson, D., 2003, El Galeno technical report: Lumina Copper Corporation, Project no. U954C, 142 p., accessed 2008, at http://www.luminacopper.com/s/ElGalenoProperty.asp. [Web page no longer available.]
Northern Peru Copper Corp., 2007b, Northern Peru receives positive prefeasibility study on Galeno copper deposit: Northern Peru Copper Corp. press release, January 10, 2007, 6 p., accessed 2008, at http://www.northernperu.com/s/NewsReleases.asp?ReportID=165810. [Web page no longer available.]
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/.