Latitude: 34°9'59"N
Longitude: 113°51'42"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: 173 (Table 4).
Niemuth, N.J. & K.A. Phillips (1992), Copper Oxide Resources, Arizona Department Mines & Mineral Resources Open File Report 92-10: 9 (Table 1).
Arizona Bureau of Mines file data.
MRDS database Dep. ID file #10137422, MAS ID #0040120406.
A former underground Cu-Fe-Ag-Au mine located in the center (SE¼SE¼NW¼) of sec. 31, T10N, R15W (Swansea 15 minute topo map), on land of unknown status. Owned at times, or in part, by Mr. Osborne; and, the Arizona Revenue Copper Co. (1910).
Mineralization is oxidized copper minerals in lensing hematite replacement bodies in folded and faulted Paleozoic limestone along a fault contact with underlying Precambrian metamorphic rocks. Some laramide intrusive granite is in the vicinity.
Workings include a shaft(s). This mine was worked intermittently in the 1910's. It produced some 200 tons of ore averaging about 2% Cu and minor gold.
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