Mine Descriptions

Sunnyside Mine


Alternate Names

Includes Pina, Horseshoe, and others

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Ownership

Farrell, Lenon & Vasquez, Strong & Harris5


Location

31.45125, -110.746784

23S 16E E. Cen. 6 protracted.5


Mineral Products

Cu, Ag, Pb-, Zn-, Au-5


Geology

Mineralized and silicified shear zone containing copper carbonates and minor tenorite, chalcopyrit, galena, and sphalerite, along a fault cutting Laramide rhyolite conglomerate and porphyry.5


Type of Operation

Shallow shafts and open cuts. Worked in late 1890's and sporadically through 1953. Some 1,600 tons of picked ore averaging about 8% Cu, 1.6 oz. Ag/T and minor Pb, Zn, and Au5.


Mining District and Mines

Harshaw District

The Sunnyside copper project is a copper exploration project located in Arizona's Patagonia Mountains in the southwestern United States. The property is located near Patagonia, Arizona, about 53 miles (85 km) south of Tucson in the Laramide porphyry copper province, and is owned by Canadian junior mineral exploration company Regal Resources Inc.9, 10

The Sunnyside system consists of deep chalcopyrite mineralization in ~60 to 59 Ma quartz-feldspar porphyry, and near-surface, slightly younger (~59–58 Ma) enargite-chalcocite-tennantite mineralization in quartz-feldspar porphyry, quartz monzonite porphyry, and Mesozoic rocks.11 Base metal skarn mineralization has been intersected in deep drill holes on the property.10


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, 11/21/23
  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 by Staton B. Keith, bulletin 1991, Arizona Geological Survey, 1975
  6. https://mrdata.usgs.gov/mrds/show-mrds.php?dep_id=10046338
  7. Wikipedia
  8. mindat.org
  9. "Sunnyside/Patagonia". Regal Resources Inc. Retrieved 1 October 2020.
    http://repository.azgs.az.gov/sites/default/files/dlio/files/nid1813/usbm_mla_011-94.pdf
  10. Turner, Andrew J. (11 June 2012). "Technical Report on the Sunnyside Project, Arizona, USA" (PDF). Edmonton, AB: Apex Geoscience Ltd. Retrieved 1 October 2020.
  11. Vikre, Peter G.; Graybeal, Frederick T.; Fleck, Robert J.; Barton, Mark D.; Seedorff, Eric (2014). "Succession of Laramide Magmatic and Magmatic-Hydrothermal Events in the Patagonia Mountains, Santa Cruz County, Arizona". Economic Geology. Society of Economic Geologists. 109 (6): 1667 - 1704. doi:10.2113/econgeo.109.6.1667.
  12. Wikipedia, 3/27/22