Empire Mine (Gold Valley), Loganville, Sierra City Mining District, Sierra County, California, USAi
| Regional Level Types | |
|---|---|
| Empire Mine (Gold Valley) | Mine |
| Loganville | - not defined - |
| Sierra City Mining District | Mining District |
| Sierra County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
39° 38' 57'' North , 120° 42' 14'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Sierra City | 221 (2011) | 11.0km |
| Plumas Eureka (historical) | 339 (2011) | 12.2km |
| Downieville | 282 (2011) | 14.5km |
| Graeagle | 737 (2011) | 14.9km |
| Whitehawk | 113 (2011) | 15.3km |
A former lode Au-Pb-Cu occurrence/mine located in secs. 25 & in the SE¼ 26, T21N, R11E, MDM, about 10.6 km NNE of Loganville, about 11.3 km WNW of Bassetts and about about 7¾ miles NNW of Sierra City, E of Pauley Creek/Gold Valley, on National Forest land. MRDS database stated accuracy for this location is 100 meters.
Mineralization is a vein deposit with ore shoots hosted in slate and volcanic rock (aphanitic). The ore body strikes N65E and dips 50SE at a thickness of 3.05 meters. A heavy dike striking E cuts and faults the vein to the W (diabase ?). Numerous quartz stringers occur into the hanging wall. Local rocks include Paleozoic marine rocks, undivided, unit 4 (Western Sierra Nevada).
Workings include underground openings with an overall depth of 63.7 meters and comprised of a main adit 700 feet long, a winze and a raise.
Production data are found in: Logan, Clarence August (1929).
No other production record was found.
Up to 10% low-grade sulfides are present.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Galena Formula: PbS |
| ⓘ Gold Formula: Au |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Quartz Formula: SiO2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Gold | 1.AA.05 | Au |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Galena | 2.CD.10 | PbS |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Quartz | SiO2 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| S | Sulfur | |
| S | ⓘ Galena | PbS |
| S | ⓘ Pyrite | FeS2 |
| Fe | Iron | |
| Fe | ⓘ Pyrite | FeS2 |
| Au | Gold | |
| Au | ⓘ Gold | Au |
| Pb | Lead | |
| Pb | ⓘ Galena | PbS |
Other Databases
| Link to USGS MRDS: | 10086589 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Shoofly-Olds Ferry 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 #0060910470
