Chief Mine (Chief group of claims), Flux Gulch, Alum Gulch, Harshaw Mining District, Patagonia Mountains, Santa Cruz County, Arizona, USAi

Regional Level Types
Chief Mine (Chief group of claims)	Mine
Flux Gulch	Gulch
Alum Gulch	Gulch
Harshaw Mining District	Mining District
Patagonia Mountains	Mountain Range
Santa Cruz County	County
Arizona	State
USA	Country

‡Ref.: Schrader, F.C. & J.M. Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mountains, Arizona, USGS Bull. 582: 251, 254 ?.

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.: 91-92.

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.

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.

Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 243.

USGS Harshaw Quadrangle topo map.

Arizona Bureau of Mines card file Santa Cruz County.

Arizona Department of Mineral Resources file data, Chief Mine.

U.S. Bureau of Mines file data, Chief Mine.

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

MRDS database Dep. ID file #10048349, MRDS ID #M899936; and, Dep. ID #10210316, MAS ID #0040230148.

A former small underground Cu-Ag-Au-Pb-Mn-Zn-Sb mine located in the center of the SE¼ sec. 31, T22S, R16E, on a group of 12 claims adjoining the World's Fair property on the SW and the Three R group of claims on the NW, ½ mile SW of the World's Fair Mine, in Flux Canyon, 8 miles SE of Patagonia; 2 miles NW of Harshaw, on National Forest land. Discovered in 1875. Owned/operated by E.E. Bethel, of Patagonia; the Calumet and Arizona Copper Co. (1 year lease, early 1900's); the Wonder Mining Co. (R.W. Coleman and Associates); Mr. John Glasson; the Washington Trading Co.; Hosier and W.H. Worthington; A.L Harroun and Associates; Howard E. Davis; Bracey Curtis; and, L. Lindsay.

Mineralization is ore in stringers in a complex system of fisure veins, including the NW-trending Flux vein and NE-trending World's Fair vein. The ore zone is 3.66 meters wide. Alteration includes volcanics locally much altered to quartz, sericite, epidote, pyrite, carbonate, and chlorite and with strong hornfelsitation in places. The surface croppings are heavily stained with Mn and Fe.

Local structures include a N60E-trending silexite dike. A general structure common to regional formations is a sheeting which dips 40NNW.

Tectonic elements include the Alum Gulch Fault Block.

Workings include shallow shafts to depths of 50 feet or more, aggregating about 500 feet of work (circa 1915). Ultimately the workings totaled 243.84 meters in length and 70.1 meters deep. Developments included several shallow shafts, each about 50 feet deep; a 230 foot deep shaft with drifts extending N and S from the 110 foot level; a 600 foot long tunnel; 460 feet of drifts; and the 70 foot deep inclined Kemp shaft, which is located to the NW, across Flux Canyon, on a fault zone which strikes N30-40W and dips 40 SW. Leased to the Calumet & Arizona Copper Co. and was being developed at a substantial rate (circa 1915). No record of production.

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Link to USGS MRDS:	10048349

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