Buckhorn Mine

Also see Wisconsin Mine

The Buckhorn/Wisconsin mine is 1.2 miles northwest of Greaterville, on an iron-stained quartz vein 1 foot wide, in granite near overlying siliceous shale and dolomitic beds on the east. The vein dips 45° SW. It is opened by a number of shallow shafts and contains, from the surface down, pyrite and galena, which at a depth of about 30 feet become plentiful and carry workable quantities of silver and a little gold. Some of the surface ore is said to have run $5 to the ton in gold and silver².

Alternate Names

Wisconsin

Company

Hill, Pallanes⁶

Mining District and Mines

Greaterville District

Arizona Geological Survey Mining data

Location

19S 15E E, Central 14⁶

-110.77485, 31.78374 (WGS84), elevation 1716m⁴

Mineral Products

Ag, Cu, Pb.⁶

Geology

Partially oxidized pyrite, galena, and chalcopyrite with free gold in a oxidized zone in an iron-stained quartz vein cutting Precambian granodorite.⁶

Type of Operation and Production

Shallow shaft. incline and tunnel. Worked in late 1890s and in 1936 - 1937, producing a small tonnage of Au, Ag, Pb, and Cu.⁶

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, F. C. Schrader, 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 Stanton B. Keith, bulletin 1991, Arizona Geological Survey, 1975
6. Index of Mining Properties in Pima County by Stanton B. Keith, bulletin 189, Arizona Geological Survey, 1974