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Bitner group (Mother Lode claim), Spenceville, Spenceville Mining District, Nevada County, California, USAi
| Regional Level Types | |
|---|---|
| Bitner group (Mother Lode claim) | - not defined - |
| Spenceville | - not defined - |
| Spenceville Mining District | Mining District |
| Nevada County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
39° 9' 5'' North , 121° 15' 36'' West
Latitude & Longitude (decimal):
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Smartsville | 177 (2016) | 7.1km |
| Penn Valley | 1,621 (2011) | 7.7km |
| Beale Air Force Base | 1,319 (2011) | 9.4km |
| Lake Wildwood | 4,991 (2011) | 10.4km |
| Rough and Ready | 963 (2011) | 13.8km |
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 | 19km |
| Sutter Buttes Gem & Mineral Society | Marysville, California | 29km |
| Roseville Rock Rollers | Roseville, California | 44km |
| Feather River Lapidary & Mineral Society | Oroville, California | 48km |
A former Cu-Au-Al-magnesite occurrence/mine located in sec. 13, T15N, R6E, MDM, 4.1 km (2.6 miles) N of Spenceville, W of Hackett Creek and SE of Allenwood Hill. As of 1908 the property comprised 160 acres. Owned/operated by C. C. Bitner & Charles Staples (?) (1908- ). MRDS database stated accuracy for this location is 1,000 meters.
Mineralization is hosted in diabase. The ore body strikes N26W and dips easterly at a thickness of 18.29 meters. The shaft in front of the tunnel shows a 5 foot vein assaying 5 to 10% Cu. Local rocks include Mesozoic granitic rocks, unit 3 (Sierra Nevada, Death Valley area, Northern Mojave Desert and Transverse Ranges).
Workings include underground openings and comprised of a tunnel on the Mother Lode claim at 450 feet long. A 100 foot shaft was sunk S of the tunnel. A 65 foot shaft was sunk in front of the tunnel face (portal ?).
Production data are found in: MacBoyle, Errol (1919)
production information: The 60 foot vein on the Mother Lode claim showed 17½% Al oxides and 3% Mg. The same ore gave a recovery of 2½% or $78 (period values) in Mg. Good values of Cu & Au on other veins.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Chalcopyrite Formula: CuFeS2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
List of minerals for each chemical element
| S | Sulfur | |
|---|---|---|
| S | ⓘ Chalcopyrite | CuFeS2 |
| Fe | Iron | |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
Other Databases
| Link to USGS MRDS: | 10031666 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Foothills-Wallowa DomainDomain
- Sierra Nevada BatholithVolcanic Arc
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