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La Paz placers, La Paz Mining District (Weaver Mining District), Dome Rock Mountains, La Paz Co., Arizona, USAi
Regional Level Types
La Paz placersGroup of Placers
La Paz Mining District (Weaver Mining District)Mining District
Dome Rock MountainsMountain Range
La Paz Co.County
ArizonaState
USACountry

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Key
Latitude & Longitude (WGS84):
33° 39' 36'' North , 114° 24' 48'' West
Latitude & Longitude (decimal):
Locality type:
Group of Placers
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Ehrenberg1,470 (2011)12.1km
Quartzsite3,626 (2017)17.0km
Blythe19,208 (2017)17.8km
La Paz Valley699 (2011)18.4km
Ripley692 (2011)27.0km


‡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.

Johnson, M.G. (1972), Placer gold deposits of Arizona, USGS Bull. 1355: 76.

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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Standard Detailed Strunz Dana Chemical Elements

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Mineral List

Mineral list contains entries from the region specified including sub-localities

2 valid minerals.

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Gold1.AA.05Au
Group 4 - Oxides and Hydroxides
Magnetite4.BB.05Fe2+Fe3+2O4

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Gold1.1.1.1Au
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4

List of minerals for each chemical element

OOxygen
O MagnetiteFe2+Fe23+O4
FeIron
Fe MagnetiteFe2+Fe23+O4
AuGold
Au GoldAu

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USGS MRDS Record:10102584

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North America
North America PlateTectonic Plate
USA

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