Tulare County Tungsten Mine (Big Jim Mine), Potato Hill, Tulare County, California, USAi
| Regional Level Types | |
|---|---|
| Tulare County Tungsten Mine (Big Jim Mine) | Mine |
| Potato Hill | Hill |
| Tulare County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
36° 16' 60'' North , 118° 55' 0'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Lemon Cove | 308 (2011) | 14.8km |
| El Rancho | 124 (2017) | 15.3km |
| Lindcove | 406 (2011) | 15.6km |
| Tonyville | 316 (2011) | 16.1km |
| Three Rivers | 2,182 (2011) | 17.3km |
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 |
|---|---|---|
| Tule Gem and Mineral Society | Farmersville, California | 26km |
Mindat Locality ID:
97469
Long-form identifier:
mindat:1:2:97469:2
GUID (UUID V4):
55ab397c-535d-48b5-9fdd-d8e469c28e4f
A former W mine located in the NE¼ (estimated) sec. 11, T19S, R28E, MDM, 4.7 km (2.9 miles) SSE of Potato Hill and 10.3 km (6.4 miles) WSW of Dumtah, on the eastern ridge of Chickencoop Canyon, about 12½ miles E of Exeter, on National Forest land (located claim). Discovered in 1941. Operated continuously during the period 1942-1955. Owned by Will and Edwina Gill, California (1972). MRDS database stated accuracy for this location is 100 meters.
Mineralization is replacement deposit hosted in limestone, quartzite, hornfels, marble, and schist. The ore body strikes NE and dips 80W to vertical at a width of 24.38 meters and athickness of 90 meters and a length of 180 meters. It is irregular in shape and disseminated as well as a fissure vein. The primary mode of origin was contact metasomatic processes and the secondary mode was metamorphism. Primary ore control involved a contact zone (fracture zone) and secondary control was lithology. Data regarding wallrock alteration are unknown. The NE edge of the tactite displayed a large tonnage of low-grade ore 0.3 to 0.5% WO3, extent not determined. Associated rocks include diorite. Local rocks include Mesozoic granitic rocks, unit 3 (Sierra Nevada, Death Valley area, Northern Mojave Desert and Transverse Ranges).
Workings include surface and underground openings comprised of an open pit 60 by 80 feet by 100 feet deep. A 450 foot adit was driven N beneath the mineralized zone, about 150 feet lower in elevation than the rim of the open pit. There is also another open cut at the NE end of the tactite body.
Analytical data results: Best ore 10% WO3, average 0.7% WO3.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.Mineral List
4 valid minerals.
Detailed Mineral List:
| ⓘ Calcite Formula: CaCO3 |
| ⓘ Epidote Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| ⓘ 'Garnet Group' Formula: X3Z2(SiO4)3 |
| ⓘ 'Pyroxene Group' Formula: ADSi2O6 |
| ⓘ Quartz Formula: SiO2 |
| ⓘ Scheelite Formula: Ca(WO4) Description: Occurs disseminated along fracture zones within a large body of silicated limestone. References: |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Calcite | 5.AB.05 | CaCO3 |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| ⓘ | Scheelite | 7.GA.05 | Ca(WO4) |
| Group 9 - Silicates | |||
| ⓘ | Epidote | 9.BG.05a | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Unclassified | |||
| ⓘ | 'Pyroxene Group' | - | ADSi2O6 |
| ⓘ | 'Garnet Group' | - | X3Z2(SiO4)3 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| C | Carbon | |
| C | ⓘ Calcite | CaCO3 |
| O | Oxygen | |
| O | ⓘ Calcite | CaCO3 |
| O | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Scheelite | Ca(WO4) |
| O | ⓘ Pyroxene Group | ADSi2O6 |
| O | ⓘ Garnet Group | X3Z2(SiO4)3 |
| Al | Aluminium | |
| Al | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Si | Silicon | |
| Si | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Si | ⓘ Quartz | SiO2 |
| Si | ⓘ Pyroxene Group | ADSi2O6 |
| Si | ⓘ Garnet Group | X3Z2(SiO4)3 |
| Ca | Calcium | |
| Ca | ⓘ Calcite | CaCO3 |
| Ca | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Ca | ⓘ Scheelite | Ca(WO4) |
| Fe | Iron | |
| Fe | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| W | Tungsten | |
| W | ⓘ Scheelite | Ca(WO4) |
Other Databases
| Link to USGS MRDS: | 10008572 |
|---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Antler Foreland BasinBasin
- Foothills-Wallowa DomainDomain
USA
- Sierra NevadaMountain Range
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References
(n.d.) Minerals Availability System (MAS), U.S. Bureau of Mines.file ID #0061070002
