Cosmopolitan Mine (Reward Mine), Genesee, Genesee Valley Mining District (Genesee Mining District), Plumas Copper Belt, Plumas County, California, USAi
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Latitude & Longitude (WGS84):
40° 4' 10'' North , 120° 43' 55'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Taylorsville | 140 (2011) | 9.2km |
| Crescent Mills | 196 (2011) | 15.5km |
| Greenhorn | 236 (2011) | 18.4km |
| Greenville | 1,129 (2011) | 20.2km |
| East Quincy | 2,489 (2011) | 20.6km |
A former Cu-Au-Ag mine located in sec. 34, T26N, R11E, MDM, 3.4 km (2.1 miles) NNE of Genesee, along Hosselkus Creek, on National Forest land. MRDS database accuracy for this location is not stated. Active in 1860's and in 1928.
Mineralization is a replacement deposit hosted in diorite and limestone. The ore body is lenticular, striking Nw and dipping 70E. It is 60.96 meters wide. Malachite and azurite occur near surface and bornite occurs as solid bodies. Local rocks include Mesozoic granitic rocks, unit 3 (Sierra Nevada, Death Valley area, Northern Mojave Desert and Transverse Ranges) and/or Jurassic marine rocks, unit 5 (Northern Sierra Nevada and Eastern Klamath Mountains).
Workings include underground openings. Several tunnels of which the main one is 500 feet long with a number iof drifts on stringers. It developed a 5 foot vein of Au ore assaying $3.40 per ton (period values). This vein is said to intersect a Cu vein within 100 feet at a depth of 240 feet. Some ore was stoped in the upper workings. The lower tunnel is 270 feet long in granodiorite. The upper tunnel is 60 feet long and exposes 14 feet of chalcopyrite. The middle tunnel is 120 feet long and shows 17 feet of ore averaging 6% Cu.
No known production values.
Mineralization is a replacement deposit hosted in diorite and limestone. The ore body is lenticular, striking Nw and dipping 70E. It is 60.96 meters wide. Malachite and azurite occur near surface and bornite occurs as solid bodies. Local rocks include Mesozoic granitic rocks, unit 3 (Sierra Nevada, Death Valley area, Northern Mojave Desert and Transverse Ranges) and/or Jurassic marine rocks, unit 5 (Northern Sierra Nevada and Eastern Klamath Mountains).
Workings include underground openings. Several tunnels of which the main one is 500 feet long with a number iof drifts on stringers. It developed a 5 foot vein of Au ore assaying $3.40 per ton (period values). This vein is said to intersect a Cu vein within 100 feet at a depth of 240 feet. Some ore was stoped in the upper workings. The lower tunnel is 270 feet long in granodiorite. The upper tunnel is 60 feet long and exposes 14 feet of chalcopyrite. The middle tunnel is 120 feet long and shows 17 feet of ore averaging 6% Cu.
No known production values.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Azurite Formula: Cu3(CO3)2(OH)2 Description: Occurs near surface. |
| ⓘ Bornite Formula: Cu5FeS4 Description: Occurs in bodies. |
| ⓘ Chalcopyrite Formula: CuFeS2 |
| ⓘ Epidote Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| ⓘ 'Garnet Group' Formula: X3Z2(SiO4)3 |
| ⓘ Malachite Formula: Cu2(CO3)(OH)2 Description: Occurs near surface. |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Bornite | 2.BA.15 | Cu5FeS4 |
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| 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 | |||
| ⓘ | Epidote | 9.BG.05a | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Unclassified | |||
| ⓘ | 'Garnet Group' | - | X3Z2(SiO4)3 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Azurite | Cu3(CO3)2(OH)2 |
| H | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](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 | ⓘ Azurite | Cu3(CO3)2(OH)2 |
| O | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| O | ⓘ Malachite | Cu2(CO3)(OH)2 |
| O | ⓘ Garnet Group | X3Z2(SiO4)3 |
| Al | Aluminium | |
| Al | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Si | Silicon | |
| Si | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Si | ⓘ Garnet Group | X3Z2(SiO4)3 |
| S | Sulfur | |
| S | ⓘ Bornite | Cu5FeS4 |
| S | ⓘ Chalcopyrite | CuFeS2 |
| Ca | Calcium | |
| Ca | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Fe | Iron | |
| Fe | ⓘ Bornite | Cu5FeS4 |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Cu | Copper | |
| Cu | ⓘ Azurite | Cu3(CO3)2(OH)2 |
| Cu | ⓘ Bornite | Cu5FeS4 |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
| Cu | ⓘ Malachite | Cu2(CO3)(OH)2 |
Other Databases
| Link to USGS MRDS: | 10139784 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Columbia Basin and RangeWide Rift
- Shoofly-Olds Ferry DomainDomain
USA
- Sierra NevadaMountain Range
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