Latitude: 34°10'3"N
Longitude: 113°40'21"W
‡Ref.: Ipsen, A.D. & H.L. Gibbs (1952), Concentration of oxide manganese ore from Doyle-Smith claims, northern Yuma County, Arizona, U.S. Bureau of Mines Report of Investigation 4844.
Farnham, L.L. & L.A. Stewart (1958), Manganese deposits of western Arizona, U.S. Bureau of Mines Information Circular 7843: 68-70.
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: 114 (Table 4).
Tuftin (1989).
Tosdal, R.M., Bryant, B., Hill, R.H., Hanna, W.F., Knepper, D.H., Jr., Jones, S.L., Oliver, K.S., and Tuftin, S.E. (1990) Mineral resources of the Rawhide Mountains Wilderness Study Area, La Paz and Mohave Counties, Arizona, Chapter G, in Mineral Resources of Wilderness Study Areas - Western Arizona and part of San Bernardino County, California: U.S. Geological Survey Bulletin 1701-G, p. G1-G24: G5-G6, G8, G12-G13.
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 338.
Arizona Bureau of Mines file data.
MRDS database Dep. ID file #10113907, MAS ID #0040120001; and, Dep. ID #10210484, MAS ID #0040120190.
A former surface Mn mine located in the NE ¼ sec. 36, T.10N., R.14W., about 15 miles from Artillery Peak. Started in the mid-1950's and closed in the late 1950's. Owned at times, or in part, by the Doyle Brothers; Stovall & Associates; Brown, Maddox, Dasco Mines Corp.
Mineralization is Pyrolusite, psilomelane, and manganite, with brecciated igneous and sedimentary rock fragments and calcite, in Tertiary sandy sediments, similar to the Artillery Peak area, that unconformably underlie Precambrian gneiss. Strong fault and shear zones are present. Manganese mineralization varies greatly in thickness. The best ore is closely associated with strong shearing and close to a thrust fault plane. Tertiary conglomerate with manganiferous lenses that range from 3 to 7 feet thick. The conglomerate consists of quartz & granite boulders between 2 and 8 inches in diameter. Manganese oxides coat the surface of the boulders and form part of the conglomerate matrix.
Workings include an open pit. Production was some 70,000 long tons of 15-16% Mn ore in the late 1950's. Some 1,460 long tons of 40% Mn ore was produced in 1958 by concentration.
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