Copper Chief Mine, Johnson Camp, Gunnison Copper Project, Cochise Mining District, Cochise County, Arizona, USAi
| Regional Level Types | |
|---|---|
| Copper Chief Mine | Mine |
| Johnson Camp | Village (Abolished) |
| Gunnison Copper Project | Project (Active) |
| Cochise Mining District | Mining District |
| Cochise County | County |
| Arizona | State |
| USA | Country |
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Latitude & Longitude (WGS84):
32° 6' 19'' North , 110° 4' 28'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Dragoon | 209 (2011) | 9.2km |
| Benson | 4,888 (2017) | 25.8km |
| Saint David | 1,699 (2011) | 26.0km |
| Willcox | 3,552 (2017) | 28.1km |
| Whetstone | 2,617 (2011) | 30.1km |
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
Local clubs are the best way to get access to collecting localities
| Club | Location | Distance |
|---|---|---|
| Sunsites Gem and Mineral Club | Pearce, Arizona | 33km |
Other/historical names associated with this locality:
Copper Chief Pit
A former small underground Cu-Zn-Ag-Au mine located in the North-central sec. 26, T.15S., R.22E. (Dragoon 7.5 minute topo map), ½ mile NW of the town of Johnson, on private land. Produced initially in 1900. Closed 1921. Owned in part or at times by The Arizona & Development Co., Dragoon Mountain Copper Co., Arizona United Development Co., Mining and Development Corp. of America, Coronado Copper & Zinc Co. Operated by the Monong and Development Corp. of Dragoon Mountain.
Developed into an open pit.
Mineralization is argentiferous copper and zinc oxides, carbonates, and sulfides in tabular, bedded, pyrometasomatic replacement deposits in faulted and silicated Cambrian Abrigo Limestone and shale plus sandy dolomite. Ore control was favorable beds at intersections with small northeaster faults. Ore concentration was replacement in favorable beds. Alteration included garnetizaton, lime silicates and the oxidation of ore. The ore bodies were 99.06 meters long, 70.1 meters wide and 6.1 meters thick and had a dip of 25 to 40NE.
The most valuable deposits formed near the Copper Chief Fault. Ore was thickest and extended deepest near small northeaster faults. Another major ore body in the mine was a lens roughly 6 X 60 X 140 feet. The two major axes were in the plane of the beds and the longest axis was parallel to the dip.
Local structures include a fault system of NE-trending faults; Tertiary block faulting trending NNW; regional trends of Late Cretaceous or Early Tertiary N- to NW-trending folds and thrust faults overriding to the NE.
Workings include shaft(s). Workings were 426.72 meters in length overall. Over 24,000 tons of ore averaging 4.2 percent Cu and 0.5 Oz. Ag per ton were produced between 1910 and 1919. Producton ceased in 1923.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.Mineral List
10 valid minerals.
Detailed Mineral List:
| ⓘ Allophane Formula: (Al2O3)(SiO2)1.3-2 · 2.5-3H2O References: |
| ⓘ Azurite Formula: Cu3(CO3)2(OH)2 References: |
| ⓘ Chalcopyrite Formula: CuFeS2 |
| ⓘ Chrysocolla Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| ⓘ 'Garnet Group' Formula: X3Z2(SiO4)3 |
| ⓘ Goethite Formula: Fe3+O(OH) References: |
| ⓘ Hematite Formula: Fe2O3 References: |
| ⓘ 'Limonite' References: |
| ⓘ Malachite Formula: Cu2(CO3)(OH)2 |
| ⓘ Native Copper Formula: Cu Description: Occurs in trace amounts in oxidized ores. References: |
| ⓘ Quartz Formula: SiO2 References: |
| ⓘ Sphalerite Formula: ZnS |
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Copper | 1.AA.05 | Cu |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Sphalerite | 2.CB.05a | ZnS |
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Goethite | 4.00. | Fe3+O(OH) |
| ⓘ | Hematite | 4.CB.05 | Fe2O3 |
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Azurite | 5.BA.05 | Cu3(CO3)2(OH)2 |
| ⓘ | Malachite | 5.BA.10 | Cu2(CO3)(OH)2 |
| Group 9 - Silicates | |||
| ⓘ | Allophane | 9.ED.20 | (Al2O3)(SiO2)1.3-2 · 2.5-3H2O |
| ⓘ | Chrysocolla | 9.ED.20 | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| Unclassified | |||
| ⓘ | 'Limonite' | - | |
| ⓘ | 'Garnet Group' | - | X3Z2(SiO4)3 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Allophane | (Al2O3)(SiO2)1.3-2 · 2.5-3H2O |
| H | ⓘ Azurite | Cu3(CO3)2(OH)2 |
| H | ⓘ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| H | ⓘ Goethite | Fe3+O(OH) |
| H | ⓘ Malachite | Cu2(CO3)(OH)2 |
| C | Carbon | |
| C | ⓘ Azurite | Cu3(CO3)2(OH)2 |
| C | ⓘ Malachite | Cu2(CO3)(OH)2 |
| O | Oxygen | |
| O | ⓘ Allophane | (Al2O3)(SiO2)1.3-2 · 2.5-3H2O |
| O | ⓘ Azurite | Cu3(CO3)2(OH)2 |
| O | ⓘ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| O | ⓘ Goethite | Fe3+O(OH) |
| O | ⓘ Hematite | Fe2O3 |
| O | ⓘ Malachite | Cu2(CO3)(OH)2 |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Garnet Group | X3Z2(SiO4)3 |
| Al | Aluminium | |
| Al | ⓘ Allophane | (Al2O3)(SiO2)1.3-2 · 2.5-3H2O |
| Al | ⓘ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| Si | Silicon | |
| Si | ⓘ Allophane | (Al2O3)(SiO2)1.3-2 · 2.5-3H2O |
| Si | ⓘ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| Si | ⓘ Quartz | SiO2 |
| Si | ⓘ Garnet Group | X3Z2(SiO4)3 |
| S | Sulfur | |
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Sphalerite | ZnS |
| Fe | Iron | |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Goethite | Fe3+O(OH) |
| Fe | ⓘ Hematite | Fe2O3 |
| Cu | Copper | |
| Cu | ⓘ Azurite | Cu3(CO3)2(OH)2 |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
| Cu | ⓘ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| Cu | ⓘ Native Copper | Cu |
| Cu | ⓘ Malachite | Cu2(CO3)(OH)2 |
| Zn | Zinc | |
| Zn | ⓘ Sphalerite | ZnS |
Other Databases
| Link to USGS MRDS: | 10039385 |
|---|
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
- Mazatzal DomainDomain
- Pedregosa BasinBasin
- Southern Basin and RangeWide Rift
USA
- Arizona
- Cochise County
- Little Dragoon MountainsMountain Range
- Cochise County
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Copper Chief Mine, Johnson Camp, Gunnison Copper Project, Cochise Mining District, Cochise County, Arizona, USA