El Dorado Mine (Eldorado Mine; Gold Basin Mine; Malco Mine), Gold Basin District, White Hills, Cerbat Mts (Cerbat Range), Mohave Co., Arizona, USA
‡Ref.: The Resources of Arizona - A Manual of Reliable Information Concerning the Territory, compiled by Patrick HAmilton (1881), Scottsdale, AZ: 70; Schrader, F.C. (1909), Mineral deposits of the Cerbat Range, Black Mountains, and the Grand Wash Cliffs, Mohave County, Arizona: USGS Bull. 397: 120-121; Wilson, E.D., et al (1934), AZ Bur. of mines Bull. 137: 76; Theodore, T.G., et al (1987), USGS PP 1361: 76, 137 (Table 11); Galbraith, F.W. & Brennan (1959), Minerals of AZ: 73; Schrader, F.C. (1909), Mineral deposits of the Cerbat Range, Black Mountains, and the Grand Wash Cliffs, Mohave County, Arizona: USGS Bull. 397; Elsing, M.J. & R.E.S. Heineman (1936), Arizona metal production, AZ Bur. Mines Bull. 140; Arizona Land Dept. Minerals map; USGS Kingman map; USGS 15 minute Garnet Mountain topo. map; AZ Dept. Min. Resources (ADMR) Eldorado Mine file; MRDS files #10027783 & 10283474.
A former surface & underground Au-Cu-Pb-Mo-V-Zn mine located in the SW ¼ sec. 21, T.28N., R.18W., in the eastern part of the White Hills about 2 miles West of Hualapai Wash, at 4,000 feet of altitude. Owned in 1907 by the Arizona-Minnesota Gold Mining Co.
Mineralization is a 2 to 4 foot (.6 to 1.3 meter) wide vein with an oreshoot averaging 20 inches wide. Schistose, medium-grained, reddish granite is in fault contact with dark biotite granite. The principal vein strikes N.50ºE. and dips 65º SE. The vein filling within the oreshoot is iron-stained, gold-bearing quartz with malachite, cerussite and vanadinite. The vein seems to average 1 meter thick and dips 25 to 30º ESE on the West side of the workings, and shallowing to nearlyu horizontal at tunnel portals of the East side of the ridge.
This mine was started in the late 1870's. Workings in 1881 timeframe included some 2,000 feet of adit tunnels plus more than 40,000 cu. ft. of stopes on 3 levels. 26,000 tons of ore were developed by 1882. Produced 1880 to 1906, with ultimate closure in 1940.
10 entries listed. 10 valid minerals.
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New Locality Added: Lägern (Otelfingen; Boppelsen), Limmattal, Zürich, SwitzerlandFrom Richard Muster, 19th Jun 2013 20:38:43