El Pilar

Porphyry copper prospect in Sonora, Mexico

Names and other identifiers

GMRAP ID 3020
Tract name Western Sierra Madre Occidental and Laramide Central (003pCu3007x)
Site status prospect

Geographic location

Country Mexico
State or province Sonora
Geographic location -110.673554396, 31.205766448
Geologic map unit -110.673554396, 31.205766448
Nearby data

Geologic information

Deposit type Porphyry copper
Age determination method Geologic inference
Age range ~80–35 Ma(?) (Laramide orogeny(?))
Age reference geologic inference
Associated rocks granite-granodiorite
Tectonic setting continental margin
Stratigraphic age Late Cretaceous–Paleocene–Eocene(?)

Commodity and development information

Development status Occurrence
Trace commodities Cu, Au, Ag
Gold-Moly ratio -9999

Reference information

Comments El Pilar was explored as a porphyry copper target in 1992. Exploration to date has not confirmed a porphyry copper deposit, but has confirmed a copper oxide deposit hosted in Tertiary conglomerate with inferred resources of 180 million tonnes of 0.365% Cu (Wood, 2006). Noranda Exploration.
Study area name Mexico
References Castro-Escárrega and others (2004); Wood (2006)
Site reference Hammarstrom and others (2010)
Castro-Escarrega, J.J., Espinoza-Beltrán, C.C., and Vázquez-Mendoza, Rigoberto, comps., 2004, Carta geólogico-minera, Estado de Sonora: Servicio Geológico Mexicano, 1 sheet, scale 1:500,000.
Wood, Gary, 2006, El Pilar property, Sonora State, Mexico: Toronto, Stingray Resources, Inc., National Instrument 43-101 F1 Technical Report prepared for Stingray Resources, Inc., 74 p., accessed June 7, 2008, at http://www.stingraycopper.com/pdf/GARYWOODS_REPORT_EL_PILAR-1.pdf. [Web page no longer available.]