Pyramid Mine (Gold Reserve), Shingle Springs area, El Dorado Co., California, USA
A former Au-Pb-Cu mine located 4 miles N of Shingle Springs.
Mineralization is hosted in serpentinite, gabbro, amphibolite, schist and norite.
Production data are found in: Clark and Carlson (1956).
References:
Crawford, James John (1894), El Dorado County: Twelfth report of the State Mineralogist: California Mining Bureau: 121.
Logan, Clarence August (1938), Mineral resources of El Dorado County: California Journal of Mines and Geology, California Division Mines Report 34: 206-280.
Clark, Wm. B. & D.W. Carlson (1956), Mines and mineral resources of El Dorado County, California: California Journal of Mines and Geology: 52(4): 423.
Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 156.
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Map Reference: 38°43'34"N , 120°56'27"W
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Mineral List:5 entries listed. 4 valid minerals.
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