Cuprite group, Santa Rosa Gulch, Greenlee County, Arizona, USAi
| Regional Level Types | |
|---|---|
| Cuprite group | - not defined - |
| Santa Rosa Gulch | Gulch |
| Greenlee County | County |
| Arizona | State |
| USA | Country |
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Latitude & Longitude (WGS84):
33° 7' 58'' North , 109° 23' 30'' West
Latitude & Longitude (decimal):
Köppen climate type:
Mindat Locality ID:
131450
Long-form identifier:
mindat:1:2:131450:5
GUID (UUID V4):
b7ecfec4-cea7-48ea-9be3-20641ae0ef14
A former underground Cu-Ag-Au mine located in the NW¼NW¼ sec. 32, T3S, R29E, 2.0 miles NW of Metcalf at the head of Santa Rosa Gulch, on private land. The property is comprised of 16 patented and 10 unpatented claims totalling 490 acres. Discovered in 1875 by Isaac Stevens. Cuprite group claims extend into the S½ of sec. 29, the SE corner of sec. 30, and the E½ of sec. 31. Produced 1905-1916. Operators included E.T. Morton; Isaac N. Stevens; and the Cuprite Copper Co. Cuprite Copper Co. dissolved in 1925 with no further records of the property.
Mineralization is an irregular ore body 30.48 meters wide. An associated rock unit is the Precambrian granite basement. Ore control was surface outcrops; the leached zone carries isolated pockets of rich ore; and the NE-trending fissure veins. Ore concentration involves surface leaching to considerable depths (200 to 400 feet); mineralization along fissure veins. Alteration is sericitization of orthoclase and the formation of NW- and E-trending quartz vein systems. The property also included 2000 linear feet of strong hematitic outcrops which range from 5 to 100 feet in width.
Geology is similar to the Coronado vein. Quartzitic veins are accompanied by irregular masses of a fine-grained rock which are possibly inclusions of older Precambrian sediments into intrusive granite. Age of mineralization roughly contemporaneous with fissure vein formation in Morenci Granite Porphyry to the S and E.
Area structures include veins that form quartz-filled streaks in granite without porphyry dikes. Ores occur in granite along the vein and in quartz accompanying the deposit.
Tectonic component is the Coronado Massif surrounded by peripheral faults; fault block to the east of the massif is downthrown about 2000 feet.
Workings total 124.97 meters in length and achieved a depth of 97.54 meters. Developments included 2 shafts of 30 feet and 320 feet deep; 2 tunnels of 150 feet and 260 feet in length. 1913 assay values ranged from 15 to 30% Cu.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Chalcocite Formula: Cu2S |
| ⓘ Dioptase Formula: CuSiO3 · H2O |
| ⓘ Hematite Formula: Fe2O3 |
| ⓘ Malachite Formula: Cu2(CO3)(OH)2 |
| ⓘ Muscovite Formula: KAl2(AlSi3O10)(OH)2 |
| ⓘ Muscovite var. Sericite Formula: KAl2(AlSi3O10)(OH)2 |
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 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Malachite | 5.BA.10 | Cu2(CO3)(OH)2 |
| Group 9 - Silicates | |||
| ⓘ | Dioptase | 9.CJ.30 | CuSiO3 · H2O |
| ⓘ | Muscovite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
| ⓘ | var. Sericite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Dioptase | CuSiO3 · H2O |
| H | ⓘ Malachite | Cu2(CO3)(OH)2 |
| H | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| H | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| C | Carbon | |
| C | ⓘ Malachite | Cu2(CO3)(OH)2 |
| O | Oxygen | |
| O | ⓘ Dioptase | CuSiO3 · H2O |
| O | ⓘ Hematite | Fe2O3 |
| O | ⓘ Malachite | Cu2(CO3)(OH)2 |
| O | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| O | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| Al | Aluminium | |
| Al | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Al | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| Si | Silicon | |
| Si | ⓘ Dioptase | CuSiO3 · H2O |
| Si | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Si | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| S | Sulfur | |
| S | ⓘ Chalcocite | Cu2S |
| K | Potassium | |
| K | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| K | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| Fe | Iron | |
| Fe | ⓘ Hematite | Fe2O3 |
| Cu | Copper | |
| Cu | ⓘ Chalcocite | Cu2S |
| Cu | ⓘ Dioptase | CuSiO3 · H2O |
| Cu | ⓘ Malachite | Cu2(CO3)(OH)2 |
Other Databases
| Link to USGS MRDS: | 10048293 |
|---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Basin and Range BasinsBasin
- Mazatzal DomainDomain
USA
- Arizona
- Greenlee County
- Shannon MountainsMountain Range
- Greenlee County
- Gila MountainsMountain Range
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References
