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Mine Descriptions

Great Silver Mine

Alternate Names

None

Mining District and Mines

Part of Basin group, Harshaw District

Also see http://docs.azgs.az.gov/OnlineAccessMineFiles/A-B/BasingroupSantacruz19a.pdf

Location

22S 16E Cen. & E. Cen 335

Mineral Products

USBM: Ag, Pb, Cu, Au-.5

Geology

Deeply oxidized, siliceous, lensing, quartz-shear veins, containing argentiferous galena, chalcopyrite, and tetrahedrite, cutting crushed and altered Cretaceous andesite volcanics with interbedded silicated limestone and shalre. Rhyolite intrusives. 5

Type of Operation and Production

Shafts, adits, tunnels, and open cuts. Worked in 1880s and early 1900s. Produced some 100 tons of ore averaging about 15 oz. Ag/T, 5.5% Pb, and 4.5% Cu.5

Photos

References

  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 - possibly using NAD72 (https://mrdata.usgs.gov/mrds/map-commodity.html#home).
  5. Index of Mining Properties in Santa Cruz County, Arizona, by Staton B. Keith, Bulletin 191, Arizona Geological Survey, 1975.