Copper Giant claims, 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° 17' 56'' North , 112° 52' 14'' West
Latitude & Longitude (decimal):
Type:
Group of Claims
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Ajo | 3,304 (2011) | 8.1km |
| Why | 167 (2017) | 12.8km |
| Colinas de Sonoidag | 289 (2014) | 46.2km |
| Adolfo López Mateos | 201 (2014) | 48.6km |
| Sonoita | 12,849 (2018) | 48.6km |
Other/historical names associated with this locality:
Copper Giant deposits; Copper Giant group; Jumbo group; Greenway-Albert property
A group of 25 unpatented Cu-Fe claims located in secs. 10, 11 & the NE¼ sec. 15, T.13S., R.6W. (Ajo 15 minute topo map), on 26 claims. about 5 miles South of Ajo, at about 1,775 feet of altitude. Idle after 1942. Owned by Lotta I. Hunter, Pasadena, CA with J.H. Greenway Albert, Tombstone, AZ, as a lessee and holder of an option to purchase (circa 1952). Knox-Arizona Mining Co., owner, 1979.
Mineralization is bedded tabular ore bodies of secondary copper eroded from oxidized copper deposits to form clastic deposits within fanglomerate, or ground-water percolation dissolved clastic copper and later precipitated chrysocolla along favorable horizons. Slica also precipitated with copper.
Local rocks are the Locomotive Fanglomerate and the Ajo volcanics. Throughout this area small, scattered outcrops of copper mineralization, primarily chrysocolla, occur.
In the Copper Giant area, the Locomotive fanglomerate consists of many types of rock fragments in a red arkosic siltstone or sandstone matrix. The fragments are composed of monzonite, quartz monzonite, trachyte, pegmatite granite, diorite, schist and gneiss, andesite, limestone and dolomite, quartzite, and conglomerate. The Ajo volcanics interfinger with the fanglomerate, and some beds consist of a mixture of volcanic and non-volcanic fragments.
The volcanics in the area consist of andesitic breccias and tuffs, with little or no lava. The breccias consist of angular to subrounded fragments of gray to red andesite, vesicular andesite containing some amygdules filled with calcite, andesite containing phenocrysts of plagioclase 1 to 3 mm wide, and a small amount of diorite.
The mineralization at the surface is found along definite beds, mainly in the fanglomerate, and in irregular mineralized masses in the volcanics. There are 4 main zones in the fanglomerate. The largest of these can be followed for over 500 feet and varies in width from ½ to 7 feet. Another such zone, a few feet NE of the largest, can be followed for 400 feet and varies in width from ½ foot to 5 feet.
The surface showing may grade with depth to chalcocite. The ore is 152.4 meters long and 2.13 meters wide.
Workings are 12.19 meters deep.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
Mineral list contains entries from the region specified including sub-localities6 valid minerals.
Detailed Mineral List:
| ⓘ Calcite Formula: CaCO3 Description: Occurs as vesicle fillings in drill cores. |
| ⓘ Chalcocite Formula: Cu2S |
| ⓘ 'Chlorite Group' |
| ⓘ Chrysocolla Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 Description: The most abundant copper mineral that occurs fanglomerate & volcanic rocks, associated with a small amount of malachite, as grains ranging from less than 1 mm to 10 mm & as vein filling in small fractures and long joints. |
| ⓘ Epidote Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) Description: In drill cores with specularite. |
| ⓘ Hematite Formula: Fe2O3 Description: Some noted. |
| ⓘ Hematite var. Specularite Formula: Fe2O3 Description: Some noted. |
| ⓘ Malachite Formula: Cu2(CO3)(OH)2 Description: Occurs in small amounts in fanglomerate & volcanic rocks, associated with chrysocolla, as grains ranging from less than 1 mm to 10 mm & as vein filling in small fractures and long joints. |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Chalcocite | 2.BA.05 | Cu2S |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Hematite | 4.CB.05 | Fe2O3 |
| ⓘ | var. Specularite | 4.CB.05 | Fe2O3 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Calcite | 5.AB.05 | CaCO3 |
| ⓘ | Malachite | 5.BA.10 | Cu2(CO3)(OH)2 |
| Group 9 - Silicates | |||
| ⓘ | Epidote | 9.BG.05a | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| ⓘ | Chrysocolla | 9.ED.20 | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| Unclassified | |||
| ⓘ | 'Chlorite Group' | - | |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| H | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| H | ⓘ Malachite | Cu2(CO3)(OH)2 |
| C | Carbon | |
| C | ⓘ Calcite | CaCO3 |
| C | ⓘ Malachite | Cu2(CO3)(OH)2 |
| O | Oxygen | |
| O | ⓘ Calcite | CaCO3 |
| O | ⓘ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| O | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| O | ⓘ Hematite | Fe2O3 |
| O | ⓘ Malachite | Cu2(CO3)(OH)2 |
| O | ⓘ Hematite var. Specularite | Fe2O3 |
| Al | Aluminium | |
| Al | ⓘ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| Al | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Si | Silicon | |
| Si | ⓘ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| Si | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| S | Sulfur | |
| S | ⓘ Chalcocite | Cu2S |
| Ca | Calcium | |
| Ca | ⓘ Calcite | CaCO3 |
| Ca | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Fe | Iron | |
| Fe | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Fe | ⓘ Hematite | Fe2O3 |
| Fe | ⓘ Hematite var. Specularite | Fe2O3 |
| Cu | Copper | |
| Cu | ⓘ Chalcocite | Cu2S |
| Cu | ⓘ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| Cu | ⓘ Malachite | Cu2(CO3)(OH)2 |
Other Databases
| Link to USGS MRDS: | 10027149 |
|---|
Localities in this Region
- Arizona
- Pima County
- Ajo Mining District
- Little Ajo Mountains
- Ajo
- New Cornelia Mine
- New Cornelia Mine area
- Copper Giant claims
- New Cornelia Mine area
- New Cornelia Mine
- Ajo
- Little Ajo Mountains
- Ajo Mining District
- Pima County
Other Regions, Features and Areas containing this locality
Mexico
- Sierra Madre OccidentalMountain Range
North AmericaContinent
- Sonoran DesertDesert
North America PlateTectonic Plate
- Basin and Range BasinsBasin
- Mojave DomainDomain
- Southern Basin and RangeWide Rift
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References
Copper Giant claims, New Cornelia Mine area, New Cornelia Mine, Ajo, Little Ajo Mountains, Ajo Mining District, Pima County, Arizona, USA