‡Ref.: Keith, Stanton B. (1978) State of Arizona Bureau of Geology and Mineral Technology, Geol. Sur. Br. Bull. 192, Index of Mining Properties in Yuma Co., Arizona: 116 (Table 4).
McConnell, A.B. (1911) Review of mining in Arizona, 1910: Mining World [Chicago]: 34: 143-147.
Jones, E.L., Jr. (1915), A Reconnaissance in the Kofa Mountains, Arizona, USGS Bull. 620: 163.
Wilson, E.D. (1933) Geology and Mineral Deposits of Southern Yuma County, Arizona. Arizona Bureau of Mines Bulletin 134: 118-119.
Wilson, E.D., Cunningham, J.B., and Butler, G.M. (1934), Arizona Lode Gold Mines and Gold Mining (revised 1967), Arizona Bureau of Mines Bull. 137: 143.
Arizona Bureau of Mines file data.
MRDS database Dep. ID file #10027700, MRDS ID #M003868; and, Dep. ID #10259244, MAS ID #0040120132.
A former surface Au-Fe-Mn mine located in sec. 13 and in West-central sec. 12, T.1N., R.16W., in Cemitosa Wash, a short distance West of Cemitosa Tanks, about 7 air miles E of Ocotillo, northern Kofa Mountains (Alamo region), on federal land.
Mineralization is spotty, finely divided, free gold in fractures and breccia with gouge, calcite, and iron and manganese oxides, in a 10 foot (3.05 meters) wide brecciated zone in andesitic volcanics (andesite porphyry). This zone trends N.50ºW., has a vertical dip, and can be traced for 1,500 feet (457 meters) along the westerly slope of a basalt-capped mesa north of the Cemitosa tanks. The country rock is a reddish to brown andesite porphyry which apparently grades into the basalt capping the mesa. The brecciated zone is iron-stained and contains numerous stringers oc calcite, some of which are 1 foot wide. Part of tjhis calcite is dark-colored and probably contains manganese. Gold can be obtained by panning.
Workings include small discovery holes. $3 a ton in Au. No production record.
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Map Reference: 33°25'37"N , 113°51'20"W
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