Trask and Copper Mine (Trask and Coffer Mine; Moonlight Mine; Beetle Mine), Rattlesnake Peak, Taylorsville Mining District, Plumas Copper Belt, Plumas County, California, USAi
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Latitude & Longitude (WGS84):
40° 10' 41'' North , 120° 47' 44'' West
Latitude & Longitude (decimal):
Type:
KΓΆppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Taylorsville | 140 (2011) | 12.0km |
| Crescent Mills | 196 (2011) | 13.3km |
| Greenville | 1,129 (2011) | 13.9km |
| Westwood | 1,647 (2011) | 22.8km |
| East Shore | 156 (2011) | 24.8km |
Mindat Locality ID:
86564
Long-form identifier:
mindat:1:2:86564:0
GUID (UUID V4):
e2458182-1eaa-4acb-8672-59770b1c7b71
A former Cu-Au-Ag mine located in secs. 24 & 25, T27N, R10E, and in secs. 19 & 30, T27N, R11E, MDM, 4.5 km (2.8 miles) W of Rattlesnake Peak, on the divide between Moonlight Creek and Lights Creek, SSE of the Engel Mine, about 8 miles NNE of Taylorsville, on National Forest land. MRDS database stated accuracy for this location is 1,000 meters.
Mineralization is a vein deposit. The ore body strikes N20W and dips steep E at 0.61 meters thick. Rock surrounding the 1920 workings is basic igneous, probably diorite and andesite principally, although there were some indications of ore ina flinty chert. Local rocks include Mesozoic volcanic rocks, unit 5 (Northern Sierra Nevada and Eastern Klamath Mountains).
Local geologic structures include a fault which dips 45S and crosses the vein on the S.
Workings include underground openings to a depth of 60.96 meters. A 900 foot tunnel from which a 100 foot deep winze was sunk, and reaches a depth of 200 feet below the outcrop. No work was done S of the fault.
Production data are located in: Logan, C.A. (1921): 470.
160 tons of ore were shipped according to Trask, which averaged 10% Cu, 40 ounces Ag and $3 Au/ton (period values).
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
4 valid minerals.
Detailed Mineral List:
| β Bornite Formula: Cu5FeS4 |
| β Calcite Formula: CaCO3 |
| β Gold Formula: Au |
| β Quartz Formula: SiO2 |
| β 'Tetrahedrite Subgroup' Formula: Cu6(Cu4C2+2)Sb4S12S Description: Argentiferous. |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| β | Gold | 1.AA.05 | Au |
| Group 2 - Sulphides and Sulfosalts | |||
| β | Bornite | 2.BA.15 | Cu5FeS4 |
| β | 'Tetrahedrite Subgroup' | 2.GB.05 | Cu6(Cu4C2+2)Sb4S12S |
| Group 4 - Oxides and Hydroxides | |||
| β | Quartz | 4.DA.05 | SiO2 |
| Group 5 - Nitrates and Carbonates | |||
| β | Calcite | 5.AB.05 | CaCO3 |
List of minerals for each chemical element
| C | Carbon | |
|---|---|---|
| C | β Calcite | CaCO3 |
| O | Oxygen | |
| O | β Calcite | CaCO3 |
| O | β Quartz | SiO2 |
| Si | Silicon | |
| Si | β Quartz | SiO2 |
| S | Sulfur | |
| S | β Bornite | Cu5FeS4 |
| S | β Tetrahedrite Subgroup | Cu6(Cu4C22+)Sb4S12S |
| Ca | Calcium | |
| Ca | β Calcite | CaCO3 |
| Fe | Iron | |
| Fe | β Bornite | Cu5FeS4 |
| Cu | Copper | |
| Cu | β Bornite | Cu5FeS4 |
| Cu | β Tetrahedrite Subgroup | Cu6(Cu4C22+)Sb4S12S |
| Sb | Antimony | |
| Sb | β Tetrahedrite Subgroup | Cu6(Cu4C22+)Sb4S12S |
| Au | Gold | |
| Au | β Gold | Au |
Other Databases
| Link to USGS MRDS: | 10034139 |
|---|
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References
