Ref.: Knight, L.H., Jr. (1970) Structure and mineralization of the Oro Blanco mining district, Santa Cruz County, Arizona: Tucson, University of Arizona, Ph.D. dissertation, 172 p., 7 sheets, scales 1:1,200, 1:6,000, 1:16,000, 1:24,000, 1:60,000, 1:62,500, and 1:358,000.
Keith, Stanton B. (1975), Arizona Bureau of Mines Bull. 191, Index of Mining Properties in Santa Cruz County Arizona: 64 (Table 4).
Arizona Bureau of Mines file data.
A Au-Ag-Cu-Pb-Zn mine group located in the SE ΒΌ sec. 26, T.22S., R.10E. Owned at times, or in part, by Setka; Sheehy; Reyes; and, Delgado.
Mineralization is irregular and lensing quartz-fissure veins, with partly oxidized and disseminated base metal sulfides, cutting Jurassic welded tuff.
Workings include shaft operations. Prospected and worked intermittently from the late 1800's, but mainly from 1935 through 1941. The group produced some 120 tons of ore averaging about 0.6 oz. Au/T, 2 oz. Ag/T and minor copper and lead.
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