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Cerro Chorcha

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Porphyry copper deposit in Chiriquí, Panama

Names and other identifiers

GMRAP ID 209
Tract name Cocos (003pCu4004)
Site status deposit

Geographic location

Country Panama
State or province Chiriquí
Geographic location -82.102300001, 8.6603
Geologic map unit -82.102300001, 8.6603
Nearby data
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Geologic information

Deposit type Porphyry copper
Age (Ma) 3.6Ma
Age determination method K-Ar
Age range 3.6 Ma
Age reference Baughman (1995)
Minerals bornite, chalcopyrite, copper, malachite, pyrite
Associated rocks quartz diorite, quartz feldspar porphyry, andesite, basalt
Tectonic setting mixed
Stratigraphic age Pliocene

Commodity and development information

Development status Prospect
Major commodities Cu
Minor commodities Au, Mo, Ag
Tonnage (Mt) 202Mt
Cu grade (%) 0.49%
Mo grade (%) 0.01%
Au grade (g/t) 0.07g/t
Ag grade (g/t) 1.8g/t
Contained copper 990,000t
Gold-Moly ratio 7

Reference information

Comments Exploration target covers approximately 2.5 square kilometers and is contained within diorite-quartz diorite exhibiting pervasive silicification, phyllic alteration, quartz stockwork veining, and local potassic alteration (secondary biotite).
Study area name Central America and Caribbean Basin
References Baughman (1995); Dominion Minerals Corp. (2010); Druecker and Sandefur (2008); Empire Minerals (2006); Kesler and others (1977); Nelson (1995); Bellhaven Copper and Gold Inc. (2007); Singer and others (2008)
Site reference Gray and others (2014)
Baughman, J.G., 1995, Geology and geochemistry of the Chorcha copper-gold porphyry prospect, Republic of Panama: Geological Society of America Annual Meeting, Abstracts with Programs, p. A-240.
Bellhaven Copper and Gold Inc., 2007, Bellhaven Copper and Gold reports additional gold mineralization from the Cerro Chorcha porphyry copper deposit in Panama: Bellhaven Copper and Gold Inc. press release February 21, 2007, 1 p., accessed June 15, 2010, at http://www.bellhavencg.com/inc/news-releases-2007-and-before/190-thu-feb-21-2007.html.Dominion Minerals Corp., 2010, Cerro Chorcha copper deposit: Dominion Minerals Corp. Web page, accessed August 15, 2010, at http://www.dominionminerals.com/Projects/Cerro/.Druecker, M.D., and Sandefur, R.L., 2008, 2008 update report on the Cerro Chorcha copper project, Chiriqui and Bocas Del Toro provinces, Republic of Panama: Bellhaven Copper and Gold Inc. National Instrument 43-101 Technical Report prepared for Dominion Minerals Corp., 62 p. and appendixes. (Also available at http://www.dominionminerals.com/Projects/Cerro_Reports/43-101%20Septembe%202008.pdf.)
Empire Minerals Corp., 2006, Projects—Cerro Chorcha copper deposit: Empire Minerals Corp. Web page, accessed June 15, 2010, at http://www.empiregoldcorp.com/Projects/Cerro/. [Web page no longer available.]
Kesler, S.E., Sutter, J.F., Issigonis, M.J., Jones, L.M., and Walker, R.L., 1977, Evolution of porphyry copper mineralization in an oceanic island arc, Panama: Economic Geology, v. 72, p. 1142–1153. (Also available at http://dx.doi.org/10.2113/gsecongeo.72.6.1142.)Nelson, C.E., 1995, Porphyry copper deposits of southern Central America, in Pierce, F.W., and Bolm, J.G., eds., Porphyry copper deposits of the American Cordillera: Arizona Geological Society Digest, v. 20, p. 553–565. (Also available at http://cbmap.net/images/porphyry_copper_deposits.pdf.)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/.