GEOLOGY OF KALAMAZOO OREBODY SAN MANUEL DISTRICT ARIZONA

An exploration project initiated by Quintana Minerals Corporation in 1965 has resulted in the discovery of the faulted segment of the San Manuel orebody. The project was based on a new interpretation of the geology of the San Manuel orebody which assumed that an original cylindrical orebody with concentric alteration zoning had been first tilted approximately 70°, then bisected by the flat San Manuel normal fault into the lower plate San Manuel orebody and an upper plate Kalamazoo orebody.The deep drill holes of the Kalamazoo project provide an unusually good cross section of porphyry copper wall rock alteration. Vertical mineral and alteration zoning effects down the original vertical axis of the deposit are also exposed because the vertical axis is now nearly horizontal and within drilling depth of the ground surface.