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Basin Mine group, Wieland group (Wieland group claims), Harshaw, Harshaw District, Patagonia Mts, Santa Cruz Co., Arizona, USA

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‡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: 275-276.

Simons, F.S. (1972) Mesozoic stratigraphy of the Patagonia Mountains and adjoining areas, Santa Cruz County, Arizona, in Mesozoic stratigraphy in southeastern Arizona: U.S. Geological Survey Professional Paper 658-E: E22.

Simons, F.S. (1974) Geologic map and sections of the Nogales and Lochiel quadrangles, Santa Cruz County, Arizona: U.S. Geological Survey Miscellaneous Investigations Series Map I-762, 9 p., 1 sheet, scale 1:48,000.

Keith, Stanton B. (1975), Arizona Bureau of Mines Bull. 191, Index of Mining Properties in Santa Cruz County Arizona: 56 (Table 4).

Niemuth, N.J. & K.A. Phillips (1992), Copper Oxide Resources, Arizona Department of Mines & Mineral Resources Open File Report 92-10: 16 (Table 1).

U.S. Bureau of Mines - Arizona Bureau of Geology and Mineral Technology file data.

U.S. Bureau of Mines Coronado National Forest Study Report.

Arizona Bureau of Mines file data.

MRDS database Dep. ID file #10048356, MRDS ID #M899944; and, Dep. ID #10234866, MAS ID #0040230443.

A former small underground Ag-Zn-Pb-Cu-Au mine group located in the center & East-center of sec. 33, T.22S., R.16E. (Harshaw 15 minute topo map), on the ridge between Harshaw and Alum Creeks, 1½ miles NW of Harshaw, on National Forest land. Discovered in 1885 by George F. Wieland and Associates. Produced 1882-1949. Owned by Mumme Mining Co. Other owner/operators included Mr. George Wieland and Theodore Gebler; Mr. George Willard; Mr. F.E. Thayer and Mr. Gus Jaeger; Mr. W.R. Johnson; Mr. J.W. Wilson; and, Mr. T.G. Dunham.

Mineralization is deeply oxidized, siliceous, lensing, quartz NW-trending shear veins/fault fissure containing argentiferous galena and other sulfides, cutting crushed and altered Cretaceous andesite volcanics with interbedded silicated limestone and shale with rhyolite intrusives. The ore zone is 6.1 meters long, 0.76 meters wide, strikes N64W and dips 70-80SSW. The lenses and shoot apparently pitch westward on the vein. Ore concentration was secondary enrichment. Surface oxidation exists to great depth.

Local structures include NW- and NE-trending fissure systems cutting thick-bedded, very fine-grained volcanics of Red Mountain; and, porphyritic to fine-grained thin to very thick trachyandesite flows. Older silicated limestone and altered shale occur locally.

Tectonic elements include Red Mountain and Corral Canyon Fault Blocks.

Workings include shafts, adits, tunnels, and open cuts (see individual mine files for details). These mines were worked in the 1880's and early 1900's. They produced some 100 tons of ore averaging about 15 oz. Ag/T, 5.5% Pb, and 4.5% Cu. Early 1900's assay values averaged 7% Cu, 1-1.5 oz/t Au, 5.5% Pb, 15 oz/t Ag.

Mineral List

Mineral list contains entries from the region specified including sub-localities

15 entries listed. 7 valid minerals.

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