Mary G Mine

AKA: Mary E, Princess group

Mining District and Mines

Cerro Colorado District

USBM:

Location

20S 10E E Central 21, 31.6726N, -111.3164W⁷

Mineral Products⁷

Ag, Pb, Cu, Au, Zn (Hg).

Ownership⁷

Owner Name: Mary Leasing Co., Ayers, Goodsill & Carry Bros., Workman, Worsley, Bledsloe, Turner, Mary G. Mng. Co., Roberts

Type of Operation and Production⁷

Shaft workings. Operated intermittently from late 1800’s to 1950, producing some 800 tons of ore averaging about 60 oz. Ag/T, 1.5% Pb, 0.7% Cu and minor Au and Zn.

Geology⁷

Irregular, lensing, drusy, and milky, partially oxidized quartz vein containing stringers and veinlets of galena, sphalerite, copper carbonates and mercury bearing tetrahedrite with minor barite and calcite along a fault zone in Laramide (?) propylitized andesite porphyry. Specs of cinnabar. Ore shoot controlled by fault intersection.
.

References

1. Mineral Appraisal of Coronado National Forest, Part 12, Santa Rita Mountains Unit, MLA11-94 (1994). SR 591-609
   https://data.azgs.arizona.edu/api/v1/collections/BMRI-1552428987530-264/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. mindat.org
4. USGS Mineral Resources Data System - possibly using NAD72 (https://mrdata.usgs.gov/mrds/map-commodity.html#home)
5. https://westernmininghistory.com/mine-detail/10162214/
6. Index of Mining Properties in Santa Cruz county, Arizona; Stanton B. Keith, Arizona Geological Survey, Bulletin 191 (1975).
7. Index of Mining Properties in Pima county, Arizona; Stanton B. Keith, Arizona Geological Survey, Bulletin 189 (1974).