Rob Roy Mine (Katie Ross group; Kathy Ross group; Chicago group; Charlie Sam group), Kofa Butte, Kofa Mining District, Yuma County, Arizona, USAi
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Latitude & Longitude (WGS84):
33° 16' 21'' North , 113° 57' 49'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| La Paz Valley | 699 (2011) | 42.6km |
| Brenda | 676 (2011) | 45.3km |
| Quartzsite | 3,626 (2017) | 50.0km |
| Vicksburg | 597 (2011) | 56.0km |
| Dateland | 416 (2011) | 66.0km |
A former surface and underground Au-Ag mine located in North-central sec. 12, T2S, R17W. Owned at times, or in part, by the Rob Roy Development Co.; and, Huffman.
Mineralization is spotty, irregular, and generally weak gold-silver values with quartz in lensing fracture veins cutting Cretaceous or Tertiary andesite.
Workings include shallow shafts and pits. This mine was worked mainly in 1934-1935 and in 1941. It produced some 435 tons of ore averaging only a little better than 0.1 oz. Au/T and 0.05 oz. Ag/T.
List of minerals for each chemical element
Other Regions, Features and Areas containing this locality
North AmericaContinent
- Sonoran DesertDesert
North America PlateTectonic Plate
- Basin and Range BasinsBasin
- Mojave DomainDomain
- Southern Basin and RangeWide Rift
USA
- Arizona
- Kofa National Wildlife RefugeWildlife Refuge
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