Ajo Cornelia Mine, New Cornelia Mine area, New Cornelia Mine, Ajo, Little Ajo Mountains, Ajo Mining District, Pima County, Arizona, USAi
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Latitude & Longitude (WGS84):
32° 20' 40'' North , 112° 50' 47'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Ajo | 3,304 (2011) | 3.3km |
| Why | 167 (2017) | 13.2km |
| Wahak Hotrontk | 114 (2011) | 48.6km |
| Colinas de Sonoidag | 289 (2014) | 51.3km |
| Adolfo López Mateos | 201 (2014) | 53.3km |
A former small underground Cu-Ag-Au mine located in the SW ¼ sec. 26 & the SE ¼ sec. 27, T.12S., R.6W. (Ajo 15 minute topo map), 2½ miles SE of Ajo on private land. Owned at times, or in part, by the Ajo Cornelia Copper Co.; and, the Copper Ridge Mining Co. Operated by J.B. Johnson (1917).
Mineralization is a replacement deposit with a lenticular ore body of erratic copper carbonates and minor chalcocite in steeply-dipping Tertiary fanglomerate with interfingering volcanics. The ore body strikes WNW and dips S. The host rock unit is the Locomotive Fanglomerate. An associated rock unit is the Ajo volcanics.
Workings include shallow shaft workings. About 40 tons of high-grade copper ore were produced in 1917. Drilling to 1,000 feet in 1919 to 1921 located no further ore.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Chalcocite Formula: Cu2S Description: Minor. |
| ⓘ Native Copper Formula: Cu References: Lalith Aditya Senthil Kumar CollectionIdentified by Lalith Aditya Senthil Kumar: Visual Identification |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Copper | 1.AA.05 | Cu |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Chalcocite | 2.BA.05 | Cu2S |
List of minerals for each chemical element
| S | Sulfur | |
|---|---|---|
| S | ⓘ Chalcocite | Cu2S |
| Cu | Copper | |
| Cu | ⓘ Chalcocite | Cu2S |
| Cu | ⓘ Native Copper | Cu |
Other Databases
| Link to USGS MRDS: | 10027144 |
|---|
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
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Ajo Cornelia Mine, New Cornelia Mine area, New Cornelia Mine, Ajo, Little Ajo Mountains, Ajo Mining District, Pima County, Arizona, USA