Pacific Alta Group Mine (Pacific Alta Gp.), Saint Louis (St Louis), Port Wine Mining District, Sierra County, California, USAi
| Regional Level Types | |
|---|---|
| Pacific Alta Group Mine (Pacific Alta Gp.) | Mine |
| Saint Louis (St Louis) | - not defined - |
| Port Wine Mining District | Mining District |
| Sierra County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
39° 41' 45'' North , 120° 55' 14'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Downieville | 282 (2011) | 17.2km |
| Plumas Eureka (historical) | 339 (2011) | 19.5km |
| Plumas Eureka | 339 (2017) | 25.3km |
| East Quincy | 2,489 (2011) | 26.5km |
| Cromberg | 261 (2011) | 26.8km |
A former lode Au occurrence/prospect/mine located in sec. 12, T21N, R9E, MDM, 0.5 km (0.3 mile) SE of Saint Louis, N of Cedar Grove Ravine (3 miles NE of La Porte), on National Forest land. MRDS database stated accuracy for this location is 1,000 meters.
Mineralization is a vein deposit hosted in slate. The ore body strikes NE and dips SE. The deposit is in an 18 foot fissure with 8 foot thick quartz and graphitic gouge on the footwall. The main vein is thrown 40 feet by a cross vein 4 feet thick. The quartz is glassy. Local rocks include undivided pre-Cenozoic metavolcanic rocks, unit 2 (undivided).
Workings include surface and underground openings comprised of an 18 foot incline and an 8 foot shaft.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Graphite Formula: C Description: Occurs as graphitic gouge. |
| ⓘ Native Gold Formula: Au |
| ⓘ Quartz Formula: SiO2 Description: Material is glassy. |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Gold | 1.AA.05 | Au |
| ⓘ | Graphite | 1.CB.05a | C |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
List of minerals for each chemical element
| C | Carbon | |
|---|---|---|
| C | ⓘ Graphite | C |
| O | Oxygen | |
| O | ⓘ Quartz | SiO2 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| Au | Gold | |
| Au | ⓘ Native Gold | Au |
Other Databases
| Link to USGS MRDS: | 10034806 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Calaveras-Baker DomainDomain
- Sierra Nevada BatholithVolcanic Arc
USA
- Sierra NevadaMountain Range
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References
(n.d.) Minerals Availability System (MAS), U.S. Bureau of Mines.file #0060910082
