RomanèchiteBlack Beauty Mine, Plomosa District, Plomosa Mts, La Paz Co., Arizona, USA
Photo: PMB Latitude: 33°44'3"N
Longitude: 114°0'45"W
Ref.: 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: 166 (Table 4).
Farnham, L.L. & L.A. Stewart (1958), Manganese deposits of western Arizona, US Bureau of Mines Information Circular 7843: 72.
Arizona Bureau of Mines file data.
MRDS database Dep. ID file #10161752, MAS ID #0040120093.
A former surface Mn mine located in the NE¼ sec. 34, T5N, R17W. Discovered in 1953. Owned and operated by Mr. Raymond Perry (1973).
Mineralization is manganese oxides with some calcite and chalcedonic quartz, as strands and irregular masses in several lensing, parallel veins along brecciated shear zones in alternating Cretaceous or Tertiary andesite flows and tuffs.
Workings include open cut operations. This mine was worked in the early 1950's. It produced some 490 long tons of 20%± Mn ore concentrated to 40%+ Mn.
Mineral List
6 entries listed. 4 valid minerals.
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