Sierra Homestake Mine, Bassetts, Sierra City Mining District, Sierra County, California, USAi
| Regional Level Types | |
|---|---|
| Sierra Homestake Mine | Mine |
| Bassetts | - not defined - |
| Sierra City Mining District | Mining District |
| Sierra County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
39° 37' 32'' North , 120° 34' 27'' West
Latitude & Longitude (decimal):
Type:
KΓΆppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Sierra City | 221 (2011) | 8.4km |
| Whitehawk | 113 (2011) | 10.7km |
| Calpine | 205 (2011) | 12.4km |
| Valley Ranch | 109 (2011) | 12.5km |
| C-Road | 150 (2011) | 15.2km |
Mindat Locality ID:
93600
Long-form identifier:
mindat:1:2:93600:9
GUID (UUID V4):
650aed58-b277-4977-b06d-429a7bb189f6
A former lode Au-Cu occurrence/mine located in sec. 1, T20N, R12E, MDM, 1.8 km (1.1 miles) ENE of Bassetts, along the E side of the North Yubaq River at the Carvin Creek homesites and about 4Β½ miles NNE of Sierra City, on National Forest land. MRDS database stated accuracy for this location is 500 meters.
Mineralization is a vein/pocket deposit hosted in granite. The ore body is 15.24 meters thick. There are several veins with one outcropping 50 feet thick on surface with a little malachite among white quartz float. An adit 75 feet below shows a vein 24 inches thick. 30 feet lower an adit shows considerable Cu sulfides and carbonate. The lower vein is up to 2 feet thick and strikes S and dips 45E. The lowest adit shows quartz up to 3 feet thick with a fissure branching into the hanging wall where a small bunch of Cu ore was mined. N of the road a vein 2 feet thick occurs in a basic dike of unknown width, striking N in the oputcrop for 525 feet. In the center a 3 foot vein dips N and contains Cu sulfides, Mo, Au & Ag. Local alteration includes carbonate. Local rocks include Mesozoic granitic rocks, unit 3 (Sierra Nevada, Death Valley area, Northern Mojave Desert and Transverse Ranges).
Workings include underground openings with an overall depth of 54.86 meters and apparently comprised of at least 3 adits as described under the geology section.
Production data are located in: Logan (1929).
No other production record was found.
Yields included $4 (period values) Au/ton to the S and $2 (period values) Au/ton to the N.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| β Chalcopyrite Formula: CuFeS2 |
| β Gold Formula: Au |
| β Malachite Formula: Cu2(CO3)(OH)2 |
| β Quartz Formula: SiO2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| β | Gold | 1.AA.05 | Au |
| Group 2 - Sulphides and Sulfosalts | |||
| β | Chalcopyrite | 2.CB.10a | CuFeS2 |
| Group 4 - Oxides and Hydroxides | |||
| β | Quartz | 4.DA.05 | SiO2 |
| Group 5 - Nitrates and Carbonates | |||
| β | Malachite | 5.BA.10 | Cu2(CO3)(OH)2 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | β Malachite | Cu2(CO3)(OH)2 |
| C | Carbon | |
| C | β Malachite | Cu2(CO3)(OH)2 |
| O | Oxygen | |
| O | β Malachite | Cu2(CO3)(OH)2 |
| O | β Quartz | SiO2 |
| Si | Silicon | |
| Si | β Quartz | SiO2 |
| S | Sulfur | |
| S | β Chalcopyrite | CuFeS2 |
| Fe | Iron | |
| Fe | β Chalcopyrite | CuFeS2 |
| Cu | Copper | |
| Cu | β Chalcopyrite | CuFeS2 |
| Cu | β Malachite | Cu2(CO3)(OH)2 |
| Au | Gold | |
| Au | β Gold | Au |
Other Databases
| Link to USGS MRDS: | 10086591 |
|---|
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References
