Sierra Gold Mining Company Mine (Ackley vein; Crouse vein), Downieville, Downieville Mining District, Sierra County, California, USAi
| Regional Level Types | |
|---|---|
| Sierra Gold Mining Company Mine (Ackley vein; Crouse vein) | Mine |
| Downieville | - not defined - |
| Downieville Mining District | Mining District |
| Sierra County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
39° 35' 3'' North , 120° 48' 18'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Downieville | 282 (2011) | 3.3km |
| Sierra City | 221 (2011) | 14.8km |
| Plumas Eureka (historical) | 339 (2011) | 21.1km |
| Pike | 134 (2011) | 23.1km |
| Washington | 185 (2011) | 25.0km |
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
Local clubs are the best way to get access to collecting localities
| Club | Location | Distance |
|---|---|---|
| Nevada County Gem & Mineral Society | Grass Valley, California | 46km |
A former Au occurrence/mine located in sec. 24, T20N, R10E, MDM, 3.3 km (2.1 miles) NNE of Downieville, along the E canyon wall of Pauley Creek, on National Forest land. MRDS database stated accuracy for this location is 100 meters. The map shows 2 adits and a prospect in this location, other wis... ...ifeid-probably the location of this mine-field or reference (cryptic, incomplete note in USGS MRDS databse file).
Mineralization is a vein deposit. Parallel veins occur with a distance between them being 400, 1,000 and 200 feet. Local rocks include Paleozoic marine rocks, undivided, unit 4 (Western Sierra Nevada).
Workings include surface and underground openings with an overall depth of 30.48 meters and comprised of 3 adits and 1 shaft on the Ackley vein, 665 feet total. 4 adits were driven on the Crouse vein, 730 feet total.
Analytical data results: 5% arsenopyrite, sometimes massive.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Arsenopyrite Formula: FeAsS Description: Sometimes massive. |
| ⓘ Native Gold Formula: Au |
| ⓘ Quartz Formula: SiO2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Gold | 1.AA.05 | Au |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Arsenopyrite | 2.EB.20 | FeAsS |
| 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 | ⓘ Arsenopyrite | FeAsS |
| Fe | Iron | |
| Fe | ⓘ Arsenopyrite | FeAsS |
| As | Arsenic | |
| As | ⓘ Arsenopyrite | FeAsS |
| Au | Gold | |
| Au | ⓘ Native Gold | Au |
Other Databases
| Link to USGS MRDS: | 10086549 |
|---|
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 #0060910292
