Black Bart Mine group, Red Mountain, Black Wonder Mining District, Stanislaus County, California, USAi
| Regional Level Types | |
|---|---|
| Black Bart Mine group | - not defined - |
| Red Mountain | Mountain |
| Black Wonder Mining District | Mining District |
| Stanislaus County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
37° 24' 52'' North , 121° 26' 21'' West
Latitude & Longitude (decimal):
KΓΆppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Diablo Grande | 826 (2017) | 14.2km |
| Westley | 603 (2011) | 25.9km |
| Patterson | 21,498 (2017) | 28.0km |
| Grayson | 952 (2011) | 28.3km |
| Crows Landing | 355 (2011) | 32.5km |
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 |
|---|---|---|
| Santa Clara Valley Gem & Mineral Society | San Jose, California | 41km |
| Livermore Valley Lithophiles | Livermore, California | 42km |
| Mother Lode Mineral Society | Modesto, California | 46km |
Mindat Locality ID:
95860
Long-form identifier:
mindat:1:2:95860:3
GUID (UUID V4):
bd7cacc4-ade0-4d83-bd6e-149935d325bf
A former Cr mine located in sec. 16, T6S, R5E, MDM, 2.5 km (8,000 feet) E of Red Mountain, along Hideout Canyon (Mine workings on N side of Hideout Canyon about 150 feet above the canyon floor), a S-flowing tributary of Del Puerto Canyon, on private (patented) land (minerals only). Discovered and first produced in 1917. Owned by Gary J. Barber, Livermore, California 94550 (surface rights) (mineral rights reserved by estate of Mr. Alphonso, previous owner who died without heirs. MRDS database stated accuracy for this location is 100 meters.
Chromite deposits occur in an ultramafic body that trends N70W, is 8 miles long and 1.5 miles wide. The ultramafic body is intrusive into the upper part of exposed Franciscan section.
Mineralization is Cr ore that occurs in a steeply-dipping tabular body, hosted in Mazama Pumice (older pumice) and/or dunite. The ore body is podiform and irregular, strikes N85W, dips N40 to 80, at a width of 0.61 meters, length of 27.43 meters. The ore bodies are fissure vein-tabular, breccia fill-lenticular and shear zone. The primary mode of origin is magmatic differentiation. Primary ore control was lithology and the secondary control was fracturing. There is no wall rock alteration. Area alteration involves the serpentization of dunite. Local rocks include utramafic rocks, chiefly Mesozoic, unit 3 (Coast Ranges and Western Klamath Mountains).
Workings include surface and underground openings comprised of an open pit, 5 short adits and some underground stoping (1953).
Production data are found in: Walker, G. W. and Griggs, A. B. (1953): 74, 75.
Analytical data are found in: Hawkes et al USGS Bulletin 936-D.
Analytical data results: Concentrates averaged 47.1% Cr2O3, 14.2% Fe, with a Cr:Fe of 2.3.
Reserves and resources data: In-situ reserves, 1942: Inferred 2,000 metric tons.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| β Antigorite Formula: Mg3(Si2O5)(OH)4 |
| β Chromite Formula: Fe2+Cr3+2O4 |
| β 'Fayalite-Forsterite Series' |
| β 'Serpentine Subgroup' Formula: D3[Si2O5](OH)4 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| β | Chromite | 4.BB.05 | Fe2+Cr3+2O4 |
| Group 9 - Silicates | |||
| β | Antigorite | 9.ED.15 | Mg3(Si2O5)(OH)4 |
| Unclassified | |||
| β | 'Fayalite-Forsterite Series' | - | |
| β | 'Serpentine Subgroup' | - | D3[Si2O5](OH)4 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | β Antigorite | Mg3(Si2O5)(OH)4 |
| H | β Serpentine Subgroup | D3[Si2O5](OH)4 |
| O | Oxygen | |
| O | β Antigorite | Mg3(Si2O5)(OH)4 |
| O | β Chromite | Fe2+Cr23+O4 |
| O | β Serpentine Subgroup | D3[Si2O5](OH)4 |
| Mg | Magnesium | |
| Mg | β Antigorite | Mg3(Si2O5)(OH)4 |
| Si | Silicon | |
| Si | β Antigorite | Mg3(Si2O5)(OH)4 |
| Si | β Serpentine Subgroup | D3[Si2O5](OH)4 |
| Cr | Chromium | |
| Cr | β Chromite | Fe2+Cr23+O4 |
| Fe | Iron | |
| Fe | β Chromite | Fe2+Cr23+O4 |
Other Databases
| Link to USGS MRDS: | 10098547 |
|---|
Other Regions, Features and Areas containing this locality
North America
- Coast MountainsMountain Range
North America PlateTectonic Plate
- Franciscan DomainDomain
USA
- California
- Diablo RangeMountain Range
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References
(n.d.) Minerals Availability System (MAS), U.S. Bureau of Mines.file ID #0060990036
