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Pyramid Mine (Pyramid group), Union Pass District (Katherine District), Oatman District (San Francisco District; Union Pass District), Black Mts, Mohave Co., Arizona, USA

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‡Ref.: Wilson, E.D., et al (1934), AZ Bur. of Mines Bull. 137: 107-108; Schrader, F.C. (1909), Mineral deposits of the Cerbat Range, Black Mountains, and the Grand Wash Cliffs, Mohave County, Arizona: USGS Bull. 397: 206; Lausen, C. (1931), Geology and ore deposits of the Oatman and Katherine Districts, AZ Bur. Mines Bull. 131: 118; MRDS files #10102585 & 10186278.

A former surface and underground Au-Ag mine located near the Colorado River, in the old Union Pass District area. Discovered 1862 and closed 1941.

35.23030; -114.56920.

Geologic setting is low hills comprised of granite. The vein consists of a large number of small stringers in reddish granite that strikes N.65ºE. and dips vertically.

Workings include a 70 foot deep shaft and a number of small pits.

Mineral List



3 entries listed. 3 valid minerals.

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