Petersen, S.R. Chimborazo copper deposit, Region II, Chile; exploration and geology - Littleton, Colorado Society of Economic Geologists 1996 - pp. 71-80 ilus. - Society of Economic Geologists. Special Publication n.5 . Subjects--Topical Terms: ALTERACION ROCA ENCAJANTECOBRE PORFIRITICOGEOLOGIA ECONOMICAMINERALIZACION Subjects--Geographic Terms: CHILE Subjects--Index Terms: CHIMBORAZO, YAC. Universal Decimal Class. No.: 553.43(238.1)/C22|1