‡Ref.: Wilson, E.D., et al (1934), AZ Bur. of Mines Bull. 137: 77; Theodore, T.G., et al (1987), USGS PP 1361: 137 (Table 11); Myers, I.A., E.I. Smith & R.V. Wyman (1986), Control of Gold Mineralization at the Cyclopic Mine, Gold Basin District, Mohave Co., Arizona: Econ. Geol.: 81: 1553-1557; Sawyer M.B., et al (1992), Principal deposits of strategic and critical minerals in Arizona, US Bur Mines Spec. Pub.; Schrader, F.C. (1909), Mineral deposits of the Cerbat Range, Black Mountains, and the Grand Wash Cliffs, Mohave County, Arizona: USGS Bull. 397: 124-126; USGS 15 minute Garnet Mountain topo. map; Indian Claims Commission docket No. 90 (1946): 101; AZ Dept. Min. Resources (ADMR) files; Bur. Land Mgmt. Arizona Mineral claims file No. 04466; MRDS files #10065282 & 10113220.
A former surface & underground Ag-Au-Pb-Mo-Cu mine located in the SW ¼ sec. 30, T.28N., R.18W., near the head of Cyclopic Wash, about 40 miles from Chloride in the eastern part of the White Hills. Owned by Robbins & Walker (1901); Cyclopic Gold Mining Co. (1904); after early 1923 - the Gold Basin Exploration Co.; and, Manta de Oro Mines, Inc. (from 1936).
Mineralization is gently dipping, brecciated zone in granite. This zone, as explored, extends to depths of 15 to 80 feet below surface and occurs discontinuously within an irregular NW-ward-trending area about 1 mile long by 200 feet wide. Ore conmsists of brecciated fragments of coarse-textured, grayish vein quartz and country rock, more or less firmly cemented by iron oxides and silica. It is cut in places by irregular stringers of quartz. Deposit occurs along Miocene detachment fault breccia.Started in the 1880's. Worked from 1919 to 1926 at least, then intermittently until 1932-1934 and 1936-1940. Workings included several open cuts and a 55 foot deep shaft. There are several old shafts from 40 to 50 feet deep and an old 300 foot incline, plus several hundred feet of old drifts and stopes.
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Map Reference: 35°46'58"N , 114°14'39"W
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Mineral List:10 entries listed. 8 valid minerals.
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