Bluepoint claim (Blue Point claim; Blue Point Mine), Marsh Flats Chrome Associates properties, Moccasin Peak area, Tuolumne County, California, USAi
This page is currently not sponsored. Click here to sponsor this page.
Latitude & Longitude (WGS84):
37° 48' 22'' North , 120° 21' 48'' West
Latitude & Longitude (decimal):
Type:
KΓΆppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Chinese Camp | 126 (2011) | 9.5km |
| Groveland | 601 (2011) | 12.0km |
| Jamestown | 3,433 (2011) | 17.2km |
| Coulterville | 201 (2011) | 18.0km |
| East Sonora | 2,266 (2011) | 19.1km |
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 | 33km |
| Mariposa Gem & Mineral Club | Mariposa, California | 50km |
Mindat Locality ID:
97593
Long-form identifier:
mindat:1:2:97593:8
GUID (UUID V4):
58273d2e-9aa5-429a-8d84-4da3f6623493
A former Cr occurrence/claim/mine located in sec. 31, T1S, R15E, MDM, 3.1 km (1.9 miles) W of Moccasin Peak (coordinates of record) (located about 2000 feet S by E of the Mum claim on the same ridge at a point 100 - 150 feet below the crest of a south-facing slope), ostensibly on federal land. Owned by the J. L. Whitney estate (1948). MRDS database stated accuracy for this location is 500 meters.
Mineralization is hosted in Late Jurassic dunite. The ore body is podiform. 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 3 small open cuts spaced 50 to 60 feet apart along a line trending N70W.
Production information: A small amount of unmined ore remains in the pits and 10 to 12 tons of ore mined in 1918 is stacked on the dump.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| β Formula: Fe2+Cr3+2O4 |
| β Magnesiochromite Formula: MgCr2O4 |
| β Talc Formula: Mg3Si4O10(OH)2 |
| β Uvarovite Formula: Ca3Cr2(SiO4)3 Description: Occurs as large, well-formed crystals. |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| β | Chromite ? | 4.BB.05 | Fe2+Cr3+2O4 |
| β | Magnesiochromite | 4.BB.05 | MgCr2O4 |
| Group 9 - Silicates | |||
| β | Uvarovite | 9.AD.25 | Ca3Cr2(SiO4)3 |
| β | Talc | 9.EC.05 | Mg3Si4O10(OH)2 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | β Talc | Mg3Si4O10(OH)2 |
| O | Oxygen | |
| O | β Chromite | Fe2+Cr23+O4 |
| O | β Magnesiochromite | MgCr2O4 |
| O | β Talc | Mg3Si4O10(OH)2 |
| O | β Uvarovite | Ca3Cr2(SiO4)3 |
| Mg | Magnesium | |
| Mg | β Magnesiochromite | MgCr2O4 |
| Mg | β Talc | Mg3Si4O10(OH)2 |
| Si | Silicon | |
| Si | β Talc | Mg3Si4O10(OH)2 |
| Si | β Uvarovite | Ca3Cr2(SiO4)3 |
| Ca | Calcium | |
| Ca | β Uvarovite | Ca3Cr2(SiO4)3 |
| Cr | Chromium | |
| Cr | β Chromite | Fe2+Cr23+O4 |
| Cr | β Magnesiochromite | MgCr2O4 |
| Cr | β Uvarovite | Ca3Cr2(SiO4)3 |
| Fe | Iron | |
| Fe | β Chromite | Fe2+Cr23+O4 |
Other Databases
| Link to USGS MRDS: | 10043696 |
|---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Calaveras-Baker DomainDomain
USA
- California
- Mother Lode BeltBelt
- Sierra NevadaMountain Range
This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to
visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders
for access and that you are aware of all safety precautions necessary.
References
(n.d.) Minerals Availability System (MAS), U.S. Bureau of Mines.file ID #0061090429
