Latitude: 31°29'40"N
Longitude: 110°44'50"W
‡Ref.: Schrader, F.C. (1915) Mineral deposits of the Santa Rita and Patagonia Mountains, Arizona, with contributions by J.M. Hill: U.S. Geological Survey Bulletin 582, 373 p., 3 sheets, scale 1:125,000: 230-231.
Rohrbacker, R.T. (1964) Geology of the Temporal Gulch-Mansfield Canyon area, Santa Cruz County, Arizona: Tucson, University of Arizona, M.S. thesis, 81 p.
Keith, Stanton B. (1975), Arizona Bureau of Mines Bull. 191, Index of Mining Properties in Santa Cruz County Arizona: 89 (Table 4).
Arizona Bureau of Mines file data.
A Pb-Ag-Cu-Au-Zn mine located in the NE ¼ sec. 7, T.21S., R.15E. Owned at times, or in part, by the Presidential Mining Co.; Leek; Ferguson; the McDonald Mining Co.; and, Altamirano & Matrecita.
Mineralization is lensing quartz-fissure veins containing brecciated wall rock and shoots and stringers of massive, granular, and crystalline pyrite, other sulfides and sulfosalts, with minor calcite and hematite plus some spotty sphalerite. The wall rock is Triassic monzonite intruded by Jurassic granite.
Workings include shaft operations. Worked in the 1880's and sporadically through 1936. The group produced some 450 tons of ore averaging about 15% Pb, 9% Cu, 9 oz. Ag/T and 0.4 oz. Au/T.
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