Donna Anna workings, Johnson Camp, Gunnison Copper Project, Cochise Mining District, Cochise County, Arizona, USAi
| Regional Level Types | |
|---|---|
| Donna Anna workings | Workings |
| 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° 5' 48'' North , 110° 4' 32'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Dragoon | 209 (2011) | 8.4km |
| Saint David | 1,699 (2011) | 25.1km |
| Benson | 4,888 (2017) | 25.1km |
| Willcox | 3,552 (2017) | 28.7km |
| Whetstone | 2,617 (2011) | 29.5km |
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 | 32km |
Other/historical names associated with this locality:
Donna Anna claims; Doña Aña workings
A series of W-Cu-Pb-Ag-Mn-Mo mine workings located in the SW ¼ sec. 26 and the SE ¼ sec. 27, T.15S., R.22E, ½ to 1¼ miles SW of Johnson and 1.8 km SW of the Republic Mine. Discovered 1882. Owned by the Coronado Copper & Zinc Co.
Mineralization is a quartz vein deposit hosted in siltstone, with spotty hübnerite and minor scheelite, powellite, pyrite, galena and chalcopyrite in coarse quartz and iron and manganese oxides along irregular fissure veins in Precambrian Pinal Schist. The deposit is comprised of one fissure intermittently mineralized for 3,500 feet. The ore zone(s) are 243.84 meters long and 0.61 meters wide, strike N50-85E and dip steeply to the S. The veins often parallel schiostosity but sometimes cross it. Ore control was fissures. An associated rock unit is the Texas Canyon Quartz Monzonite (53 ± 3 MY).
Workings are open cuts and shallow underground workings (prospect pits and trenches) and shallow shafts to 6.1 meters deep; some short drifts. The largest open cut is 20 feet deep. The workings follow a milky quartz vein(s) along a ridge line in the vicinity of the Bluebird Mine and Bluebird East Mine, near Texas Canyon. The evident host rock is granitic Texas stock (Texas pluton). One trench has an exploratory shaft or raise at the bottom. It appears as if little, if any, ore was actually removed; however, it is reported to have produced a small quantity of tungsten ore, largely from placer operations prior to 1919.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Chalcopyrite Formula: CuFeS2 |
| ⓘ Fluorite Formula: CaF2 Colour: Colorless Fluorescence: Blue-white & pink (SW UV); blue (LW UV). Description: Massive fluorite in milky quartz as masses and filling veinlets and stringers. References: |
| ⓘ Galena Formula: PbS |
| ⓘ Hübnerite Formula: MnWO4 Description: Occurs as fracture fillings and isolated crystals embedded in massive milky quartz. |
| ⓘ Powellite Formula: Ca(MoO4) |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Quartz Formula: SiO2 Habit: Prismatic Colour: Colortless to white (milky). Description: Crystals occur in cavities in massive milky quartz. |
| ⓘ Scheelite Formula: Ca(WO4) Colour: Tan Fluorescence: Bright blue-white. Description: Occurs as masses, crystals and specks in massive quartz. |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Galena | 2.CD.10 | PbS |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| Group 3 - Halides | |||
| ⓘ | Fluorite | 3.AB.25 | CaF2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| ⓘ | Hübnerite | 4.DB.30 | MnWO4 |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| ⓘ | Powellite | 7.GA.05 | Ca(MoO4) |
| ⓘ | Scheelite | 7.GA.05 | Ca(WO4) |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Hübnerite | MnWO4 |
| O | ⓘ Powellite | Ca(MoO4) |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Scheelite | Ca(WO4) |
| F | Fluorine | |
| F | ⓘ Fluorite | CaF2 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| S | Sulfur | |
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Galena | PbS |
| S | ⓘ Pyrite | FeS2 |
| Ca | Calcium | |
| Ca | ⓘ Fluorite | CaF2 |
| Ca | ⓘ Powellite | Ca(MoO4) |
| Ca | ⓘ Scheelite | Ca(WO4) |
| Mn | Manganese | |
| Mn | ⓘ Hübnerite | MnWO4 |
| Fe | Iron | |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Pyrite | FeS2 |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
| Mo | Molybdenum | |
| Mo | ⓘ Powellite | Ca(MoO4) |
| W | Tungsten | |
| W | ⓘ Hübnerite | MnWO4 |
| W | ⓘ Scheelite | Ca(WO4) |
| Pb | Lead | |
| Pb | ⓘ Galena | PbS |
Other Databases
| Link to USGS MRDS: | 10098426 |
|---|
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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