‡Ref.: Farnham, L.L. & L.A. Stewart (1958), Manganese deposits of western Arizona, US Bureau of Mines Information Circular 7843: 82.
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: 159 (Table 4).
Arizona Bureau of Mines file data.
A manganese mine located in the NE¼ sec. 22, East-central sec. 23, NE¼ sec. 27 and the NW¼ sec. 26, T3N, R21W. Owned at times, or in part, by Daniels; and, McFarland & Hullinger.
Mineralization is manganes oxides in irregular, discontinuous replacement deposits along minor folds and in fissures in Mesozoic limestone beds, often under caliche and fanglomerate cover. Some high-grade ore is present.
Workings are open cuts and shallow shaft operations in the mid- and late 1950's. Some 250 tons or more of 41-51% Mn ore were produced.
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