‡Ref.: Schrader, F.C. & J.M. Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mountains, AZ, USGS Bull. 582: 251, 253.
Schrader, F.C. (1917), The geologic distribution and genesis of the metals in the Santa Rita-Patagonia Mountains, Arizona, Economic Geology: 12: 237-269.
Kartchner, W.E. (1944) The geology and ore deposits of a portion of the Harshaw district, Patagonia Mountains, Arizona: Tucson, University of Arizona, Ph.D. dissertation, 100 p..
Galbraith, F.W. (1947), Minerals of Arizona, Arizona Bureau of Mines Bull. 153: 15.
Keith, Stanton B. (1975), Arizona Bureau of Mines Bull. 191, Index of Mining Properties in Santa Cruz County Arizona: 59 (Table 4).
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 101.
Arizona Bureau of Mines file data.
A Zn-Pb-Ag-Cu-Au (Mn) mine located in the SE ¼ sec. 32, T.22S. R.16E., near the head of Alum Gulch, about 1 mile south of the World's Fair Mine and 1½ miles west of Harshaw, and about 1/3 mile north of the Red Bird Mine, on the northeast side of the canyon. Owned at times, or in part, by Blue Flag Mining Co., Summit County, Colorado (1882-circa 1915); Farrell; January Mines Co.; Big Jim Mines, Inc.; and the American Smelting and refining Corp. (ASARCO).
Mineralization is strong and persistent quartz vein, with rich argentiferous cerussite in the oxide zone with sulfides in depth, in a fault zone cutting altered Cretaceous andesite. Wall rock is locally strongly pyritized and propylitized. Manganese and iron oxide gossan. Alum and sulfur are found leaching from the dump.
The vein is the continuation of the Red Bird dike or vein, and where opened on this property, is 6 to 7 feet wide. It strikes N.30ºW. and dips 75ºNE.
Workings include operations from 2 old shafts and the neighboring Trench Mine. Worked from the early 1870's for high-grade silver ore and in 1925-1928 and 1944-1949 for zinc and lead. Total production was probably some 71,000 tons of ore averaging about 6% Zn, 4% Pb, 7 oz. Ag/T, and minor copper and gold.
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