New Hope mine group

Ownership

Dona Maria Elena, Gray, Conley, Nelson, Keck Copper Co.⁵

Location

31.47889,-110.78417¹⁰

22S 15E Cen. 35⁵

Mineral Products

Cu, Ag, Zn-, Pb-, Au-⁵

Geology

Disseminated pyrite, chalcopyrite, and minor galena and sphalerite associated with quartz on fractures and joints in epidotized, sheared and silicified Triassic sediments. Deposit oxidized near the surface with some supergene enrichment.⁵

Type of Operation

Shaft and open cut operations. Prospected originally in the late 1800's but mined mainly for leaching ore from 1957 through 1969, producing some 400 tons of ore averaging about 1.7% Cu, 1.6 oz. Ag/T, and minor Au and Pb⁵.

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. Geology of the Three R Mine, Palmetto Mining District, Santa Cruz County, Arizona by Paul Handverger, MS thesis 1963, University of Arizona
7. https://mrdata.usgs.gov/mrds/show-mrds.php?dep_id=10046338
8. https://azdeq.gov/Three-R-Mine
9. https://tucson.com/news/local/three-r-mine-contributed-to-arizonas-rep-for-copper-production/article_2a25e1e1-7280-5fd5-be97-a40732a39b1b.html
10. mindat.org