Booker lease (Booker lease occurrence), Beckwith Ranch Mines, Yosemite Junction, Tuolumne County, California, USAi
| Regional Level Types | |
|---|---|
| Booker lease (Booker lease occurrence) | - not defined - |
| Beckwith Ranch Mines | Group of Mines |
| Yosemite Junction | - not defined - |
| Tuolumne County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
37° 52' 22'' North , 120° 30' 8'' West
Latitude & Longitude (decimal):
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Chinese Camp | 126 (2011) | 6.1km |
| Jamestown | 3,433 (2011) | 11.3km |
| Tuttletown | 668 (2011) | 13.7km |
| Sonora | 4,818 (2017) | 16.2km |
| East Sonora | 2,266 (2011) | 17.0km |
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 |
|---|---|---|
| Calaveras Gem & Mineral Society | Angels Camp, California | 22km |
Mindat Locality ID:
97598
Long-form identifier:
mindat:1:2:97598:3
GUID (UUID V4):
776efb82-d9f2-4ea5-ad27-9ef61bdbe435
A former Cr mine located in sec. 2, T1S, R13E, MDM, 2.3 km (7,700 feet) SSW of Yosemite Junction, on private land. Owned by R. B. Beckwith. MRDS database stated accuracy for this location is 500 meters.
Mineralization is hosted in Late Jurassic serpentinite. The ore body is lenticular in form, strikes N60W and dips 75NE at a width of 0.91 meters. The ore zone is parallel to the schistosity in the serpentine and broken up by a series of faults. The deposit occurs in the northern part of the western part of 2 serpentine belts which trend NW-SE across the county. The belt is exposed over an area 30 km by 6 km. Local rocks include ultramafic rocks, chiefly Mesozoic, unit 2 (Western Sierra Nevada and Klamath Mountains).
Workings include surface openings comprised of a long, narrow trench.
Production statistics: Year: 1919: Cr2O3 averaged ^36 weight %.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Formula: Fe2+Cr3+2O4 |
| ⓘ Magnesiochromite Formula: MgCr2O4 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Chromite ? | 4.BB.05 | Fe2+Cr3+2O4 |
| ⓘ | Magnesiochromite | 4.BB.05 | MgCr2O4 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Chromite | Fe2+Cr23+O4 |
| O | ⓘ Magnesiochromite | MgCr2O4 |
| Mg | Magnesium | |
| Mg | ⓘ Magnesiochromite | MgCr2O4 |
| Cr | Chromium | |
| Cr | ⓘ Chromite | Fe2+Cr23+O4 |
| Cr | ⓘ Magnesiochromite | MgCr2O4 |
| Fe | Iron | |
| Fe | ⓘ Chromite | Fe2+Cr23+O4 |
Other Databases
| Link to USGS MRDS: | 10043697 |
|---|
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References
