Pennsylvania Mine, Silver Mountain, Silver Mountain Mining District, Alpine County, California, USAi
| Regional Level Types | |
|---|---|
| Pennsylvania Mine | Mine |
| Silver Mountain | Mountain |
| Silver Mountain Mining District | Mining District |
| Alpine County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
38° 36' 28'' North , 119° 47' 58'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Markleeville | 210 (2014) | 9.7km |
| Alpine Village | 114 (2011) | 18.4km |
| Mesa Vista | 200 (2011) | 22.2km |
| Topaz Lake | 157 (2011) | 24.2km |
| Coleville | 495 (2011) | 25.8km |
Mindat Locality ID:
74536
Long-form identifier:
mindat:1:2:74536:4
GUID (UUID V4):
e61e146e-430a-41f5-b7e0-39e406689ad5
A former Au-Ag mine located in sec. 20, T9N, R20E, MDM, 2.6 km (8,600 feet) W of Silver Mountain (townsite), in Pennsylvania Canyon (not named on topo map), on National Forest wilderness land (Mokelumne Wilderness). MRDS database stated accuracy for this location is 1,000 meters.
Mineralization is a deposit with varying amounts of sulfides hosted in granitic gneiss. The ore body is 2.44 meters thick. The deposit is a vein of silicified breccia in granitic rock, both granite but the footwall has gouge of clay 3 inches thick. Local rocks include Tertiary pyroclastic and volcanic mudflow deposits, unit 9 (Cascade Range).
Workings include underground openings comprised of a 900 foot lower adit and a 300 foot upper adit, and a shaft. Crosscuts the vein 500 feet from surface (data from MRDS - what does ??). Production data are found in: Clark (1977).
Production information: Some production in the 1860's and 1870's. No other production record found.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Calcite Formula: CaCO3 Habit: Rhombohedral Description: Occurs as fine groups of rhombohedral crystals. |
| ⓘ Polybasite Formula: [Ag6Sb2S7][Ag9CuS4] |
| ⓘ Pyrargyrite Formula: Ag3SbS3 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Pyrargyrite | 2.GA.05 | Ag3SbS3 |
| ⓘ | Polybasite | 2.GB.15 | [Ag6Sb2S7][Ag9CuS4] |
| 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 |
| S | Sulfur | |
| S | ⓘ Polybasite | [Ag6Sb2S7][Ag9CuS4] |
| S | ⓘ Pyrargyrite | Ag3SbS3 |
| Ca | Calcium | |
| Ca | ⓘ Calcite | CaCO3 |
| Cu | Copper | |
| Cu | ⓘ Polybasite | [Ag6Sb2S7][Ag9CuS4] |
| Ag | Silver | |
| Ag | ⓘ Polybasite | [Ag6Sb2S7][Ag9CuS4] |
| Ag | ⓘ Pyrargyrite | Ag3SbS3 |
| Sb | Antimony | |
| Sb | ⓘ Polybasite | [Ag6Sb2S7][Ag9CuS4] |
| Sb | ⓘ Pyrargyrite | Ag3SbS3 |
Other Databases
| Link to USGS MRDS: | 10034945 |
|---|
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References
