Intrusive breccia pipes cemented by tourmaline and Cu-Bi ores. Related to emplacement of the Amancay granodiorite intrusion into upper Paleozoic sediments. qv: Llambias and Malviccini (1969), The geology and genesis of the Bi,Cu mineralized breccia pipe San Francisco de los Andes, San Juan, Argentina. Economic Geology 64:271-286