Sonora, Mexico

Los Tamales is a porphyry copper-moly system 125 km southwest of Tucson, Arizona and 28 km south of the US-Mexican border. Discovered by water well sampling during a joint United States Geological Survey and Servicios Geologicos Mexicanos effort in the 1970's, Los Tamales was the subject of two USGS open-file reports 94-685 and 84-289. The Mexican state company Azuferera Panamericana carried out a three hole, 1000 meter diamond drill program in the 1970's. Sources who worked on the project at that time confirmed that copper mineralization was consistent and continuous in the deepest 500 meter hole and contained between 0.25 and 0.35% Cu its entire length. The other two holes 600 and 900 meters south of the first hole contained similar values.

Dense stockworks of quartz-chalcopyrite-molybdenum veinlets outcrop in a potassically altered granite in the northwest portion of the 3000 ha property, whereas widespread quartz-sericite-pyrite-tourmaline alteration occurs in a rhyolite porphyry to the south. Largely oxidized, this alteration area presents an additional target for an enrichment zone in the subsurface. Our target at Los Tamales is a major porphyry copper-moly system. Although the outcropping mineralization is in the 0.25% and 0.35% Cu range, Sundance believes the combination of a low strip ratio of outcropping mineralization, and the proximity to existing porphyry copper operations and supply infrastructure in Tucson will compensate for the lower grades. An ancillary target at Tamales is the quartz-sericite-pyrite zone which could overlie a copper enriched zone.

Sundance plans to carry out an airborne ZTEM survey and eventually drill the deposit.