Commander claim, Maurezzio group (Deerhorn claim; Deerhorn Extension claim; Commander Extension claim; Bottle Springs claim; Bottlespring claim), Crescent Hill, Middle Fork of Feather River area, Plumas County, California, USAi
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Latitude & Longitude (WGS84):
39° North , 120° West (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~1km
Type:
Köppen climate type:
A Cr claim located in sec. 17, T23N, R9E, MDM, on National Forest land. MRDS database stated accuracy for this location is 500 meters.
Mineralization is a Cr deposit associated with a shear zone. Local rocks include Ultramafic rocks, chiefly Mesozoic, unit 2 (Western Sierra Nevada and Klamath Mountains).
Local structures include a shear zone (Commander claim).
Workings include surface and underground openings and consisted of a long open cut, a 30 foot long drift, and a prospect pit on the Commander claim.
Production data: Ore shipped from the Commander claim only.
Assay data: ore averaged 38.76% Cr2O3, 12.11% Fe, Cr to Fe ratio 2.19:1 (Commander claim).
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Magnesiochromite Formula: MgCr2O4 Description: High Al content. |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Magnesiochromite | 4.BB.05 | MgCr2O4 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Magnesiochromite | MgCr2O4 |
| Mg | Magnesium | |
| Mg | ⓘ Magnesiochromite | MgCr2O4 |
| Cr | Chromium | |
| Cr | ⓘ Magnesiochromite | MgCr2O4 |
Other Databases
| Link to USGS MRDS: | 10139868 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Shoofly-Olds Ferry DomainDomain
- Sierra Nevada BatholithVolcanic Arc
USA
- Sierra NevadaMountain Range
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References
(n.d.) Minerals Availability System (MAS), U.S. Bureau of Mines.file ID #0060630264
