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Mine Descriptions

Duquesne Mine

Patagonia Mining district

Company

Duquesne Mg. & Reduction Co., Callahan Zinc Lead Co., Nash Mines, McFarland

Location

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Mineral Products

Zn, Pb, Cu, Ag, Au-

Type of Operations

Shaft operations. Worked sporadically in 1940's and 1950's, producting some 20,000 tons of ore averaging about 8% Zn, 3% Pb, 1.5% Cu, 5 oz. Ag/T, and minor Au.5

Geology

Bunchy and disseminated sphalerite, galena, chalcopyrite and pyrite in pyrometasomatized lenses in Permian Naco Group limestone, along a nose of strong garnetization. Mineralization controlled by bedding and faulting.5

  1. Mineral Appraisal of Coronado National Forest, Part 12, Santa Rita Mountains Unit, MLA11-94 (1994). SR 591-609
    http://repository.azgs.az.gov/sites/default/files/dlio/files/nid1813/usbm_mla_011-94.pdf
  2. Mining in the Santa Rita and Patagonia Mountains of Arizona, U.S. Department of Interior, 1915. Republished 2014 by Kerby Jackson.
  3. Mike Bertram,
  4. USGS Mineral Resources Data System - using WGS84 (https://mrdata.usgs.gov/mrds/map-commodity.html#home)
  5. Index of Mining Properties in Santa Cruz County by Staton B. Keith, bulletin 1991, Arizona Geological Survey, 1975