Andreasen, G.E., and Pitkin, J.A., 1964, Aeromagnetic map of the Twin Buttes area, Pima and Santa Cruz Counties, Arizona [abs.]: Geophysical Abstracts, no. 209, item 315. Authors Andreasen, G.E., and Pitkin, J.A. Publication Date 1964 Citation Geophysical Abstracts, no. 209, item 315. State AZ Province BR County PM SC Placenames Sierrita Mts. Santa Cruz Valley Coyote Mts. Altar Valley Cerro Colorado Mts. Tumacacori Mts. Keywords Mineral District Magnetic Survey Copper Lead Zinc Gold Silver Molybdenum More Keywords Mineral District, Magnetic Survey, Copper, Lead, Zinc, Gold, Silver, Molybdenum, AzGeoBib RefNum 243