Balzapamba-Las Guardias

Porphyry copper prospect in Bolívar, Ecuador

Names and other identifiers

GMRAP ID 227
Alternate names El Torneado
Tract name Colombia-Ecuador Miocene Chaucha (005pCu1005)
Site status prospect

Geographic location

Country Ecuador
State or province Bolívar
Geographic location -79.15, -1.666666667
Geologic map unit -79.15, -1.666666667
Nearby data

Geologic information

Deposit type Porphyry copper
Age (Ma) 19.9Ma
Age determination method Re-Os molybdenite
Age range 19.9 ±0.3 Ma
Age reference Chiaradia and others (2004)
Minerals biotite, chalcopyrite, chlorite, covellite, magnetite, molybdenite, pyrite, pyrrhotite, scheelite, sphalerite
Associated rocks pillow andesitic basalt, basalt, granodiorite porphyry, limestone
Tectonic setting continental margin
Stratigraphic age Miocene

Commodity and development information

Development status Occurrence
Major commodities Cu, Ag
Minor commodities Zn
Gold-Moly ratio -9999

Reference information

Comments 0.71 to 1.38% Cu, 0.1% Zn, 1.2 g/t Ag.
Study area name Andes
References Chiaradia and others (2004); PRODEMINCA (2000a); PRODEMINCA (2000b); Singer and others (2008)
Site reference Cunningham and others (2008)
Chiaradia, Massimo; Fontboté, LluÌs; and Beate, Bernardo, 2004, Cenozoic continental arc magmatism and associated mineralization in Ecuador: Mineralium Deposita, v. 39, p. 204–222. (Also available at http://dx.doi.org/10.1007/s00126-003-0397-5.)
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/.