Bear Mountain Ranch occurrence, Copperopolis, Foothill Copper Belt, Calaveras County, California, USAi
| Regional Level Types | |
|---|---|
| Bear Mountain Ranch occurrence | Occurrence |
| Copperopolis | Census-designated Place |
| Foothill Copper Belt | Belt |
| Calaveras County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
38° 0' 33'' North , 120° 36' 22'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Copperopolis | 3,671 (2011) | 4.4km |
| Angels Camp | 2,677 (2012) | 8.8km |
| Tuttletown | 668 (2011) | 13.0km |
| Vallecito | 442 (2011) | 14.7km |
| Jamestown | 3,433 (2011) | 17.2km |
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 | 9km |
| Amador County Gem & Mineral Society | Sutter Creek, California | 46km |
A Cr occurrence located in the SE¼ of sec. 24, T2N, R12E, MDM, 4.4 km (2.7 miles) NE of Copperopolis, on the divide between York Creek and Empire Creek, SW of Bear Mountain (on the Bear Mountain Ranch; toopo sheet shows the ranch in the NW¼ sec. 11, this township). MRDS database stated accuracy for this location is 500 meters.
Mineralization is hosted in a small serpentine lens; ore reported to exist here. Local rocks include Mesozoic volcanic rocks, unit 2 (Western Sierra Foothills and Western Klamath Mountains).
Workings include underground openings.
Mineralization is hosted in a small serpentine lens; ore reported to exist here. Local rocks include Mesozoic volcanic rocks, unit 2 (Western Sierra Foothills and Western Klamath Mountains).
Workings include underground openings.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ 'Chlorite Group' References: Specimen Label by Dragon MineralsIdentification: Dealer/Collection Label |
| ⓘ Formula: Fe2+Cr3+2O4 |
| ⓘ Clinochlore Formula: Mg5Al(AlSi3O10)(OH)8 References: Specimen Label by Dragon MineralsIdentification: Dealer/Collection Label |
| ⓘ Clinochlore var. Chromium-bearing Clinochlore Formula: Mg5(Al,Cr)2Si3O10(OH)8 References: Specimen Label by Dragon MineralsIdentification: Dealer/Collection Label |
| ⓘ Magnesiochromite Formula: MgCr2O4 |
| ⓘ Magnetite Formula: Fe2+Fe3+2O4 References: Specimen Label by Dragon MineralsIdentification: Dealer/Collection Label |
| ⓘ 'Serpentine Subgroup' Formula: D3[Si2O5](OH)4 Description: Occutrs as a lens hosting magnesiochromite. |
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 |
| ⓘ | Magnetite | 4.BB.05 | Fe2+Fe3+2O4 |
| Group 9 - Silicates | |||
| ⓘ | Clinochlore | 9.EC.55 | Mg5Al(AlSi3O10)(OH)8 |
| ⓘ | var. Chromium-bearing Clinochlore | 9.EC.55 | Mg5(Al,Cr)2Si3O10(OH)8 |
| Unclassified | |||
| ⓘ | 'Chlorite Group' | - | |
| ⓘ | 'Serpentine Subgroup' | - | D3[Si2O5](OH)4 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Clinochlore | Mg5Al(AlSi3O10)(OH)8 |
| H | ⓘ Clinochlore var. Chromium-bearing Clinochlore | Mg5(Al,Cr)2Si3O10(OH)8 |
| H | ⓘ Serpentine Subgroup | D3[Si2O5](OH)4 |
| O | Oxygen | |
| O | ⓘ Chromite | Fe2+Cr23+O4 |
| O | ⓘ Clinochlore | Mg5Al(AlSi3O10)(OH)8 |
| O | ⓘ Clinochlore var. Chromium-bearing Clinochlore | Mg5(Al,Cr)2Si3O10(OH)8 |
| O | ⓘ Magnesiochromite | MgCr2O4 |
| O | ⓘ Magnetite | Fe2+Fe23+O4 |
| O | ⓘ Serpentine Subgroup | D3[Si2O5](OH)4 |
| Mg | Magnesium | |
| Mg | ⓘ Clinochlore | Mg5Al(AlSi3O10)(OH)8 |
| Mg | ⓘ Clinochlore var. Chromium-bearing Clinochlore | Mg5(Al,Cr)2Si3O10(OH)8 |
| Mg | ⓘ Magnesiochromite | MgCr2O4 |
| Al | Aluminium | |
| Al | ⓘ Clinochlore | Mg5Al(AlSi3O10)(OH)8 |
| Al | ⓘ Clinochlore var. Chromium-bearing Clinochlore | Mg5(Al,Cr)2Si3O10(OH)8 |
| Si | Silicon | |
| Si | ⓘ Clinochlore | Mg5Al(AlSi3O10)(OH)8 |
| Si | ⓘ Clinochlore var. Chromium-bearing Clinochlore | Mg5(Al,Cr)2Si3O10(OH)8 |
| Si | ⓘ Serpentine Subgroup | D3[Si2O5](OH)4 |
| Cr | Chromium | |
| Cr | ⓘ Chromite | Fe2+Cr23+O4 |
| Cr | ⓘ Clinochlore var. Chromium-bearing Clinochlore | Mg5(Al,Cr)2Si3O10(OH)8 |
| Cr | ⓘ Magnesiochromite | MgCr2O4 |
| Fe | Iron | |
| Fe | ⓘ Chromite | Fe2+Cr23+O4 |
| Fe | ⓘ Magnetite | Fe2+Fe23+O4 |
Other Databases
| Link to USGS MRDS: | 10028805 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Calaveras-Baker DomainDomain
- Sierra Nevada BatholithVolcanic Arc
USA
- California
- Mother Lode BeltBelt
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References
(n.d.) Minerals Availability System (MAS), U.S. Bureau of Mines.file ID #0060090418
Bear Mountain Ranch occurrence, Copperopolis, Foothill Copper Belt, Calaveras County, California, USA