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Ferrar Gulch placers (Farrar Gulch placers), Ferrar Gulch, Arroyo La Paz, La Paz placers, La Paz Mining District (Weaver Mining District), Dome Rock Mountains, La Paz Co., Arizona, USAi
Regional Level Types
Ferrar Gulch placers (Farrar Gulch placers)Group of Placers
Ferrar GulchGulch
Arroyo La Paz- not defined -
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° 38' 39'' North , 114° 23' 7'' West
Latitude & Longitude (decimal):
Locality type:
Group of Placers
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Ehrenberg1,470 (2011)13.7km
Quartzsite3,626 (2017)14.5km
La Paz Valley699 (2011)15.2km
Blythe19,208 (2017)19.9km
Ripley692 (2011)28.3km


‡Ref.: Browne (1868) Report on the Mineral Resources West of the Rocky Mountains. U.S. Treasury Department: 480.

Jones, Jr., E.L. (1915), Gold Deposits near Quartzsite, Arizona, in Contributions to Economic Geology by F.L. Ransome & H.S. Gale, USGS Bull. 620: Plate IV, 51.

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 and placering: 27.

Wilson, E.D. (1961) Gold Placers and Placering in Arizona. Arizona Bureau of Mines Bull. 168 (revised 1978): 26-28.

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).

MRDS database Dep. ID file #10161880, MAS ID #0040120205.

A former Au-Ag-Fe placer mine / deposit area located in South-central sec. 25, & the NW¼ sec. 36, T4N, R21W, in Ferrar Gulch, a tributary to the Arroyo La Paz, on the western flank of the Dome Rock Mountains, on land of unknown status. Richest and most productive placers of the district.

Mineralization is rough and angular gold nuggets and fine particles, often with iron oxide attached, and with magnetite concentrates in variable thicknesses of angular rock fragments, boulders, sands, and clay. Unsorted to consolidated near the surface but consolidated and cemented in depth. The source of the gold was gold-quartz veins near the head of Ferrar Gulch.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


2 valid minerals.

Detailed Mineral List:

Gold
Formula: Au
Description: As placer gold comprised of rough & angular nuggets, often with attached Fe-oxides, and fine particles.
Reference: Wilson, E.D. (1927), AZ Gold placers, 2nd. ed. (revised), Univ. AZ Bull. 124: 12-18; AZ Bur. Mines Bull. 135 (1933), AZ Gold placers and placering: 27; Jones, Jr., E.L. (1915), Gold Deposits near Quartzsite, Arizona, in Contributions to Economic Geology by F.L. Ransome & H.S. Gale, USGS Bull. 620: 51.
Magnetite
Formula: Fe2+Fe3+2O4
Description: As a component of placer sands and gravels.
Reference: Keith, Stanton B. (1978) State of Arizona Bureau of Geology and Mineral Technology, Geol. Sur. Br. Bull. 192, Index of Mining Properties in Yuma Co., Arizona: 159 (Table 4).

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

Other Databases

USGS MRDS Record:10161880

Other Regions, Features and Areas containing this locality

North America
North America PlateTectonic Plate
USA

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