Gold Nugget Mine (Guadalupe Mine; Moreno Mine), Plomosa Pass, Plomosa District, Plomosa Mts, La Paz Co., Arizona, USA
|Latitude & Longitude (WGS84):||33° 39' 37'' North , 114° 3' 47'' West|
|Latitude & Longitude (decimal):||33.66028,-114.06306|
|Other regions containing this locality:||Sonoran Desert, North America|
‡Ref.: Bancroft, H. (1911), Reconnaissance of the ore deposits in northern Yuma County, Arizona, USGS Bull. 451: 89-90.
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: 168 (Table 4).
Arizona Bureau of Mines file data.
MRDS database Dep. ID file #10102544, MRDS ID #M003929; and, Dep. ID #10113495, MAS ID #0040120224.
A small former surface and underground Au-Ag-Pb-Cu-Fe mine located in East-central sec. 25 and sec. 19, T4N, R18W, 11 miles E of Quartzsite, on BLM-administered land. Owned at times, or in part, by Smith; and, Simpson.
Mineralization is free, coarse gold with some primary and secondary lead minerals and minor oxidized copper in a quartz-limonite gangue in a stringer vein in a fault zone in Paleozoic quartzite sediments cut by diorite dikes. Possibly some pyrargyrite also present. The ore bodies are irregular, strike S25E, and dip vertically.
The deposit has been prospected by a short vertical shaft in addition to several surface cuts. This mine was worked in the early 1900's with minor production and from 1935 through 1951, producing an estimated 100 tons of ore averaging about 1 oz. Au/T, 2 oz. Ag/T, 1% Pb and 0.1% Cu.
8 valid minerals.
This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.
Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org
|Olenekian - Ediacaran|
247.2 - 635 Ma
|Paleozoic sedimentary rocks|
Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052.