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Grey Horse Mine (Grayhorse property; Black Cap; U.S. Vanadium group; Sullivan claims; J.J. Sullivan prospects; Esperanza group; Coral Canyon claim), Riverside, Riverside District, Dripping Spring Mts, Pinal Co., Arizona, USA
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Photo: D Lapham
Latitude: 33°6'40"N
Longitude: 110°54'17"W
 
 
A former Pb-V-Zn-Mo underground mine located in the SW¼ sec. 3, T4S, R14E, about 1¾ miles E of Riverside, on BLM-administered land. NOTE: Accurate coordinates obtained January, 2007 (main adit portal).

Mineralization is in a fissure in a limestone inclusion in the diabase and along bedding planes in the Mescal Limestone. The ore zone strikes N80E and dips 85S. The vanadates are younger than galena but older than quartz.

Workings include a shaft 40 feet deep, a few short tunnels, and a small open cut 600 feet S of the main workings.

Mineral List

Anglesite
Calcite
Cerussite
Descloizite
Dolomite
Galena
Hematite
Mimetite
Quartz
Vanadinite
Wulfenite


11 entries listed. 11 valid minerals.

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References

Ransome (1923) USGS Ray Folio 217: 23.

Newhouse, W.H. (1934), The source of vanadium, molybdenum, tungsten and chromium in oxidized lead deposits, American Mineralogist: 19: 209-220.

Cornwall & Krieger (1975) USGS Map GQ-1188.

Clark, A. & G. Fleck (1980), The Grey Horse Mine, Pinal County, Arizona, Mineralogical Record: 11: 231-233.

Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 411.

A.L. Flagg vanadium Reports - Book named vanadium extraction.

Metal Mines of Washington-Preliminary Report; Derkey, Joseph, Lasmanis.

Mineralogical Record (1980): 11(4): 231-233.

USGS Kearny Quadrangle map.

Arizona Department of Mineral Resources Esperanza group file.

Arizona Department of Mineral Resources Grey Horse Mine file.

Arizona Department of Transportation Hiway map - Pinal County (1949), Arizona Department of Mineral Resources maps.

MRDS database Dep. ID #10037115; MRDS ID M030473; and Dep. ID #10210436, MAS ID #0040210497.

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Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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