1. Map showing geology and rock geochemistry of the Puquio porphyry copper prospect, Santiago de Chocorvos quadrangle, Peru = Mapa geologico y geoquimica de roca del prospecto porfiritico de cobre el Puquio, hoja Santiago de Chocorvos, Peru Yale Public content 1988. 2002-06-01T04:00:00Z. 2015-01-15T20:03:20Z. Geological Survey (U.S.). The Survey ; For sale by Map Distribution. English&Spanish. Public. Peru.