Baboquivari Mts, Pima Co., Arizona, USA

‡Ref.: Wilson, E.D., Cunningham, J.B., and Butler, G.M. (1934), Arizona Lode Gold Mines and Gold Mining (revised 1967), Arizona Bureau of Mines Bull. 137: 179.

Havens, R., et al (1954), Beneficiation of oxide manganese and manganese-silver ores from southern Arizona, U.S. Bureau of Mines Report of Investigation 5024.

Galbraith, F.W. & D.J. Brennan (1959), Minerals of Arizona: 79, 93, 97.

Dale, V.B., et al (1960), Tungsten deposits of Cochise, Pima, and Santa Cruz Counties, Arizona, U.S. Bureau of Mines Report of Investigation 5650.

Shawe, D.R. (1966), AZ-NM & NV-UT beryllium belts, USGS PP 550-C: 206-213.

Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 134, 145, 400.

The Baboquivari Mountains extend for 30 miles Northward from the Mexican border. Their crest marks the eastern border of the Tohono O'odom (Papago) Nation reservation border.

The middle segment of the range consists mainly of metamorphosed Cretaceous strata which have been intruded by numerous dikes and complexly faulted. Northward, these formations give way to granite and gneiss. The sedimentary rocks tend to form rounded slopes, while the granite ourcrops are rugged, and the dike exposures commonly stand out as cliffs and crags.

The principal gold-bearing quartz veins known in these mountains occur NW & SE of baboquivari Peak.

These mountains have produced an estimated $142,000 in gold (period values).