The Condenstable mine is located in central Peru, South America. The monthly production is about 7, 500 tons of crude ore with a grades of 2.8% copper. Rocks in the Condestable area are sedimentary rocks of Jurassic-Cretaceous and basic igneous rocks of Cretaceous-early Tertiary age. Ore deposits of the mine are classified into two types, one is the hydrothermal metasomatic vein type (the Manto type) and the other is the fissure-filling vein type. The former occurs in shear zones in the porphyrite near the contact with the diabase or sedimentary rocks. Ore minerals are chalcopyrite, pyrite, pyrrhotite, magnetite, atacamite, malachite, chrysocolla, etc., and skarn minerals are actinolite, tremolite, epidote and chlorite.