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Blue Bell Mine, Mystery Hill Mine group, Swansea, Santa Maria District (Planet District; Swansea District; Bill Williams District), Buckskin Mts, La Paz Co., Arizona, USA

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A former Cu-Ag-Au-Pb-F (Se) mine located in T10N, R13W, GSRM, on federal wilderness land (Buckskin Mountains Wilderness area). Owned at times, or in part, by Graves; Rogers; Haydon and Farmosano; Quick; El Tigro Mining Co.; El Pluma Mines, Inc.; Townsend Mining Co.; French; Cononation Mining Co.; Boyd and Napel; and, Ore Concentrates, Inc.

Mineralization is copper carbonates and silicates, with local lead carbonate, in fissure veins associated with strong silicification and some epidote, fluorite and selenite, in altered Precambrian schist and gneiss along a fault zone. Scattered erosional remnants of Paleozoic limestone with intrusive plugs and dikes of Laramide monzonite containing Paleozoic limestone inclusions.

First worked in the late 1880's, and sporadically through 1945. This mine group produced over 500 tons of ore averaging about 3% Cu, 2 oz. Ag/T, 0.5% Pb, and 0.1 oz Au/T.

Mineral List

4 valid minerals.

The above list contains all mineral locality references listed on This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.


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: 115 (Table 4).

Tosdal, R.M., Bryant, B., Hill, R.H., Hanna, W.F., Knepper, D.H., Jr., Jones, S.L., Oliver, K.S., and Tuftin, S.E. (1990) Mineral resources of the Rawhide Mountains Wilderness Study Area, La Paz and Mohave Counties, Arizona, Chapter G, in Mineral Resources of Wilderness Study Areas - Western Arizona and part of San Bernardino County, California: U.S. Geological Survey Bulletin 1701-G: G12-G13.

Arizona Bureau of Mines file data.

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