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Keystone Mine, Mineral Park, Mineral Park District, Wallapai District, Cerbat Mts (Cerbat Range), Mohave Co., Arizona, USA

‡Ref.: The Resources of Arizona - A Manual of Reliable Information Concerning the Territory, compiled by Patrick Hamilton (1881), Scottsdale, AZ: 67; The History of Arizona, Chap. X: 79; Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 100; Bastin, E.S. (1925), Origin of certain rich silver ores near Chloride and Kingman, AZ, USGS Bull. 750-B: 17-39; Univ. of AZ Bull. 41 (1916-17), Mineralogy of Useful Minerals in AZ: 29, 50, 56; Galbraith, F.W. (1947), AZ Bur. of Mines Bull. 153, Minerals of AZ: 15; Dings, M.G. (1951), The Wallapai Mining District, Cerbat Mts, Mohave County, Arizona, USGS Bull. 978-E; Schrader, F.C. (1909), Mineral deposits of the Cerbat Range, Black Mountains, and the Grand Wash Cliffs, Mohave County, Arizona: USGS Bull. 397: 65; AZ Dept. Min. Resources (ADMR) Mohave card file; Mohave custom mill proj. card file; AZ Dept. Min. Resources (ADMR) Keystone mine file; Elsing, M.J. & R.E.S. Heineman (1936), Arizona metal production, AZ Bur. Mines Bull. 140; Willis, C. (1920), AZ Mining Jour., Aug 1920: 13; MRDS files #10027835 & 10161721.

A former surface and underground Pb-Ag-Cu-Au-Zn-As-Mo mine owned by the New York Mining & Milling Co. Discovered 1870.Produced 1901-1948.

35.37720; -114.15250.

Mineralization is a 2 foot wide vein of sulfide ore with lens shaped orebodies in Ithaca Peak granite. Interestingly, the History of Arizona lists the ore minerals as "gray antimonial silver," "ruby silver," native silver, "zinc pyrites," and "sulphurets of iron."

Scistosity trends N65ºE. and dips 90º. Secondary sheeting strikes N.20ºW. and dips 80ºE. Precambrian schistosity strikes N30ºE. Veins, fissures and dikes strike NW to NNW regionally.

Workings included a 260 foot deepshaft and a 150 foot deep shaft (1881), plus 400 feet of levels, drifts and winzes. A 5-stamp mill and roaster were in service in the Mineral Park area. Steam hoist was in use. Closed 1940.





Map Reference: 35°22'34"N , 114°9'7"W

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Mineral List:
Acanthite
Chalcopyrite
Galena
Molybdenite
Pyrite
Silver
Sphalerite


7 entries listed. 7 valid minerals.

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Copyright © Jolyon Ralph and Ida Chau 1993-2009. 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. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 26th Oct 2009 05:05:02