Quiruvilca mine (Asarco mine), Quiruvilca District, Santiago de Chico Province, La Libertad Department, Peru
Sharp, bright, modified Pyrite octahedra up to 2 cm. associated with sharp, bright, prismatic Enargite xx. This was one of the first specimens of this kind brought into the United States by Richard Kosnar in the early 1970s. For reference, Richard Kosnar was one of the first U.S. mineral dealers to travel into Peru and bring back specimens when nobody else cared or dared to do so. Mined: 1971.