Ref.: Farnham, L.L. & L.A. Stewart (1958), Manganese deposits of western Arizona, US Bureau of Mines Information Circular 7843: 80.
Parker, F.Z. (1966) The Geology and Mineral Deposits of the Silver District Trigo Mountains, Yuma County, Arizona. Masters Thesis, San Diego State College.
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: 181 (Table 4).
Arizona Bureau of Mines file data.
A manganese mine group located in the NW¼ sec. 3 & the NE¼ sec. 4, T3S, R23W. Owned by Hess, Hess & Lilly; and, Kirk & Lea.
Mineralization is psilomelane and pyrolusite in irregular, disconnected masses and veinlets in brecciated and silicified Tertiary andesitic volcanics along fault zones.
Workings include open pit operations.
Mineral List
2 entries listed. 1 valid mineral.
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