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Junin

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Porphyry copper deposit in Imbabura, Ecuador

Names and other identifiers

GMRAP ID 224
Tract name Colombia-Ecuador Miocene Chaucha (005pCu1005)
Site status deposit

Geographic location

Country Ecuador
State or province Imbabura
Geographic location -78.583333333, 0.333333333
Geologic map unit -78.583333333, 0.333333333
Nearby data
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Geologic information

Deposit type Porphyry copper
Age (Ma) 6Ma
Age determination method unknown
Age range 8–5 Ma
Age reference Singer and others (2008)
Minerals biotite/phlogopite, bornite, chalcocite, chalcopyrite, chlorite, covellite, cuprite, digenite, epidote, hematite, kaolinite/illite, malachite, molybdenite, montmorillonite, muscovite/sericite, paragonite, pyrite
Associated rocks granodiorite porphyry, diorite porphyry, quartz porphyry, alaskite, andesite, diorite, granodiorite, diorite, quartz monzonite, granodiorite, sandstone, sedimentary breccia, skarn
Tectonic setting continental margin
Stratigraphic age Miocene

Commodity and development information

Development status Unknown
Major commodities Cu, Mo, Ag
Tonnage (Mt) 319Mt
Cu grade (%) 0.71%
Mo grade (%) 0.026%
Ag grade (g/t) 1.9g/t
Contained copper 2,300,000t
Gold-Moly ratio -9999

Reference information

Comments Exposed.
Study area name Andes
References Ascendant Copper Corp. (2007b); Gendall and others (2000); PRODEMINCA (2000a); PRODEMINCA (2000b); Singer and others (2008)
Site reference Cunningham and others (2008)
Ascendant Copper Corp., 2007b, Junin mineral property overview: Ascendant Copper Corp., 6 p., accessed 2008, at http://www.ascendantcopper.com/Junin_Overview.php. [Web page no longer available.]
Gendall, I.R., Quevedo, L.A., Sillitoe, R.H., Spencer, R.M., Puente, C.O., León, J.P., and Romulo, R.P., 2000, Discovery of a Jurassic porphyry copper belt, Pangui area, southern Ecuador: Society of Economic Geologists SEG Newsletter, no. 43, p. 1–15. (Also available at http://www.segweb.org/pdf/publications/newsletters/2000/SEG-Newsletter-43-2000-October.pdf.)
PRODEMINCA, 2000a, Evaluacion distritos mineros del Ecuador—Depositos porfidicos y epi-mesotermales relacionados con intrusiones de las Cordilleras Occidental y Real: Ministerio de Energia y Minas, Subsecretaria de Minas, Direccion Nacional de Geologia, Proyecto de Desarrolo Minero y Control Ambiental (PRODEMINCA), v. 5, 223 p.
PRODEMINCA, 2000b, Manual de exploracion de depositos metaliferos en el Ecuador: Ministerio de Energia y Minas, Subsecretaria de Minas, Direccion Nacional de Geologia, Proyecto de Desarrolo Minero y Control Ambiental (PRODEMINCA), 100 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/.