‡Ref.: Browne (1868) Report on the Mineral Resources West of the Rocky Mountains. U.S. Treasury Department.
Heikes, V.C. (1913) Arizona, in Precious and semiprecious metals in the western states in 1912 (mine production), in Mineral resources of the United States, calendar year 1912, Part I - Metals: U.S. Geological Survey (Washington, D.C., Government Printing Office), p. 536-568.
Jones, E.L., Jr. (1916b) Gold deposits near Quartzsite, Arizona, in Contributions to economic geology, 1915, Part I: Metals and nonmetals except fuels: U.S. Geological Survey Bulletin 620: 45-52.
Wilson, E.D. (1927), Arizona gold placers, 2nd. ed. (revised), University of Arizona Bull. 124: 12-18.
Arizona Bureau of Mines Bull. 135 (1933), Arizona gold placers & placering: 124-128.
Elsing, M.J. and Heineman, E.S. (1936) Arizona Metal Production, Arizona Bureau of Mines Bulletin 140: 104.
Butler, G.M. (1937) Arizona Gold Placers and Placering. Arizona Bureau of Mines Bull. 142: 24.
Wilson, E.D. (1952), Arizona gold placers and placering (Fifth edition revised): Arizona Bureau of Mines Bull. 160: 25.
Wilson, E.D. (1961) Gold Placers and Placering in Arizona. Arizona Bureau of Mines Bull. 168 (revised 1978): 25-29.
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: 159 (Table 4).
Niemuth, N.J. (1987), Arizona Mineral Development 1984-1986, Arizona Department of Mines & Mineral Resources Directory 29, 46 pp.
Arizona Bureau of Mines file data.
MRDS database Dep. ID file #10102584, MRDS ID #M004587; and, Dep. ID #10259156, MAS ID #0040120002.
A small former surface and underground Au-Ag placer deposit area located in T3N, R21-22W, & T4N, R21W, in various washes throughout the area, about 9 miles West of Quartzsite and 9 miles NE of Ehrenberg Ferry, on BLM-administered land. Started about 1862. Operated by the La Paz Mining Co. (1986).
Mineralization is gold-bearing gravels, often containing large nuggets, in various large and small washes throughout the area, with the best values near a dissected pediment on Mesozoic metamorphics intruded by Laramide granitic intrusives. The gold-bearing gravels reach a depth of 18.29 meters. The source of the gold was numerous gold-bearing quartz veins in the Mesozoic metamorphics.
Workings consist of many shallow shafts and shallow cuts. These placers were found in 1862 and were worked extensively until 1864, and intermittently on a small scale since then. Total estimated and recorded production would be over 50,000 oz. of gold plus some silver. During 1984-1986, La Paz Mining performed a surface drilling program and bulkm sample test in sec. 26.
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