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South Geronimo Mine (South Geronimo claim), Silver District, Trigo Mts, La Paz Co., Arizona, USA

Wulfenite
South Geronimo Mine, Silver District, Trigo Mts, La Paz Co., Arizona, USA

Photo: Bruce Murphy 2008
Latitude: 33°6'59"N
Longitude: 114°36'48"W
‡Ref.: Wilson, E.D. (1933) Geology and Mineral Deposits of Southern Yuma County, Arizona. Arizona Bureau of Mines Bulletin 134: 64-65.

Parker, F.Z. (1966) The Geology and Mineral Deposits of the Silver District Trigo Mountains, Yuma County, Arizona. Masters Thesis, San Diego State College.

Keith, Stanton B. (1978) State of Arizona Bureau of Geology and Mineral Technology, Geological Survey Branch Bull. 192, Index of Mining Properties in Yuma County, Arizona: 176 (Table 4).

Phillips, K.A. (1987), Arizona Industrial Minerals, 2nd. Edition, Arizona Department of Mines & Minerals Mineral Report 4, 185 pp.

MRDS database Dep. ID file #10027202, MRDS ID #M002459; and, Dep. ID #10210583, MAS ID #0040120212.

A former underground Pb-Zn-Ag-Fe-Mo-Mn-W-V-Fluorspar mine located in East-central & the SE¼ of sec. 34, T3S, R23W, about 1¼ miles NW of the Red Cloud Mine, on BLM-administered land. Owned by Neal Mining Co. (1933).

Mineralization is 2 veins, one a few feet wide and the other about 50 feet wide that occur in a fault zone that strikes N27ºW. & dips 65ºNE. Vein fillings include argentiferous lead sulfate and carbonate, zinc carbonate, lead oxide, wulfenite, and partly altered streaks of galena in irregular bunches or in vugs in irregular lensing veins along faults cutting bedded Tertiary-Cretaceous rhyolite tuffs and andesitic flows that are faulted against granite. Gangue is iron oxides, manganiferous calcite, quartz and fluorite. Ore said to average 6% Pb and 8 oz. Ag/T.

Workings include a shaft and a tunnel on the wider of the 2 veins.

Mineral List

Calcite
var: Manganoan Calcite

Cerussite
Fluorite
Hematite
Massicot
Smithsonite
Vanadinite
Wulfenite


8 entries listed. 7 valid minerals.

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Copyright © Jolyon Ralph and Ida Chau 1993-2011. Jobs in Arizona, USA Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the 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 hundreds 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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