LeRoy Mine group, Dos Cabezas, Dos Cabezas Mining District (Two Heads Mining District), Dos Cabezas Mountains, Cochise County, Arizona, USAi
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Latitude & Longitude (WGS84):
32° 11' 3'' North , 109° 36' 0'' West
Latitude & Longitude (decimal):
Type:
Group of Mines
Köppen climate type:
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 | 37km |
A former small Pb-Zn-Ag-Cu-Au group of mines located on 6 patented claims (1964), in the SW ¼ sec. 27, NE ¼ sec. 33 and the NW ¼ sec. 34, T.14S., R.27E, about 1½ miles NE of Dos Cabezas, on private land (location given is for the southernmost shaft). Discovered 1890. Produced 1890-1953. Owned/operated at times, or in part, by the LeRoy Consolidated Mines Co.; the Leroy Conservation of Mines; Dorsey Brothers; Rice Brothers; Ariland Mines Co.; Areland Mining Co.; VMP Leasing Co.; Frank Peterson; Miller Leasing; Z.P. Issacson; and, Bean. Additonal holdings in T14S, R27E, sec. 33 NE¼ and sec. 34 NW¼.
Mineralization is scattered bunches and disseminations of sulfides in irregular, coarsely-textured, cross-cutting quartz veins along fault and shears cutting Precambrian granite rocks, accompanied by intrusive diabase dikes. The ore zone (and most veins) strike NE and dip 65SE. The ore vein at the Oneida tunnel strikes N-S and dips 64W and is 2 feet in width.
A quartz monzonite body is in fault contact with Cretaceous sediments to the north and in concordant contact with Cambrian sediments to the south. E-W trends exist on the bedding and on the fault. Faulting and shearing within the quartz monzonite cuts ore veins.
Workings include shaft(s). There are 2 shafts, the Climax and Leroy, and numerous tunnels. There are at least 2000 feet of workings in Climax; 3 levels, 1500 feet workings on the Leroy; 3 levels, and one tunnel on the Oneida, is 500 feet long, with 500 feet of side drifts. Workings are collectively 1,219.2 meters long and 137.16 meters deep. The group produced a few thousand tons of ore in the 1880's and some 4,000 tons intermittently in the 1900's up to 1950.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
Mineral list contains entries from the region specified including sub-localities7 valid minerals.
Detailed Mineral List:
| ⓘ Calcite Formula: CaCO3 |
| ⓘ Chalcopyrite Formula: CuFeS2 Localities: Reported from at least 10 localities in this region. |
| ⓘ Galena Formula: PbS Localities: Reported from at least 10 localities in this region. |
| ⓘ Hematite Formula: Fe2O3 |
| ⓘ Pyrite Formula: FeS2 Localities: Reported from at least 10 localities in this region. |
| ⓘ Sphalerite Formula: ZnS Localities: Reported from at least 10 localities in this region. |
| ⓘ Sternbergite Formula: AgFe2S3 Habit: Euhedral, up to 2mm long Description: Occurts on the 150 level enclosed in galena & sphalerite in a silver-rich oreshoot. |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Sphalerite | 2.CB.05a | ZnS |
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Sternbergite | 2.CB.65 | AgFe2S3 |
| ⓘ | Galena | 2.CD.10 | PbS |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Hematite | 4.CB.05 | Fe2O3 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Calcite | 5.AB.05 | CaCO3 |
List of minerals for each chemical element
| C | Carbon | |
|---|---|---|
| C | ⓘ Calcite | CaCO3 |
| O | Oxygen | |
| O | ⓘ Calcite | CaCO3 |
| O | ⓘ Hematite | Fe2O3 |
| S | Sulfur | |
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Galena | PbS |
| S | ⓘ Pyrite | FeS2 |
| S | ⓘ Sphalerite | ZnS |
| S | ⓘ Sternbergite | AgFe2S3 |
| Ca | Calcium | |
| Ca | ⓘ Calcite | CaCO3 |
| Fe | Iron | |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Hematite | Fe2O3 |
| Fe | ⓘ Pyrite | FeS2 |
| Fe | ⓘ Sternbergite | AgFe2S3 |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
| Zn | Zinc | |
| Zn | ⓘ Sphalerite | ZnS |
| Ag | Silver | |
| Ag | ⓘ Sternbergite | AgFe2S3 |
| Pb | Lead | |
| Pb | ⓘ Galena | PbS |
Other Databases
| Link to USGS MRDS: | 10027114 |
|---|
Localities in this Region
- Arizona
- Cochise County
- Dos Cabezas Mountains
- Dos Cabezas Mining District (Two Heads Mining District)
- Dos Cabezas
- Dos Cabezas Mining District (Two Heads Mining District)
- Dos Cabezas Mountains
- Cochise County
- Arizona
- Cochise County
- Dos Cabezas Mountains
- Dos Cabezas Mining District (Two Heads Mining District)
- Dos Cabezas
- Dos Cabezas Mining District (Two Heads Mining District)
- Dos Cabezas Mountains
- Cochise 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
- Mazatzal DomainDomain
- Pedregosa BasinBasin
- Southern Basin and RangeWide Rift
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References
