Black Crow No. 1 claim [?], Black Crow No. 1 and Black Crow No. 2 claims, Boulder Peak, Altoona Mining District, Trinity Mountains, Klamath Mountains, Trinity County, California, USAi
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Latitude & Longitude (WGS84):
41° 9' 15'' North , 122° 29' 2'' West
Latitude & Longitude (decimal):
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Dunsmuir | 1,582 (2017) | 18.7km |
| Coffee Creek | 217 (2011) | 20.2km |
| Mount Shasta | 3,296 (2017) | 22.5km |
| Trinity Center | 267 (2011) | 26.2km |
| Lakehead | 461 (2011) | 29.0km |
Mindat Locality ID:
96139
Long-form identifier:
mindat:1:2:96139:7
GUID (UUID V4):
d1b6d018-13c0-43fb-8d23-cd21a851c731
A former Cr occurrence/claims/mine located 2.7 km (8,800 feet) S of Boulder Peak, along Grader Gulch, a tributary of the Trinity River, E of Crow Creek, on National Forest land. Discovered 1935. Owned by Mr. George L. Costa, Castella, California. MRDS database stated accuracy for this location is 500 meters.
NOTE: There are a total of 3 MRDS files pertaining to the Black Crow claims 1 & 2. There are two sets of data presented among those files. It would appear that MRDS files #10043522 & 10117796 applies to this location, probably one of the two combined claims, but not specified as such. The other file probably pertains to the other of the two claims located in sec. 14. This location was discovered first and is therefore probably claim No. 1.
Mineralization is a Cr deposit. The ore body is lens-shaped. The deposit occurs in a large body of peridotite that covers approximately 300 square miles in NE Trinity County. Local rocks include ultramafic rocks, chiefly Mesozoic, unit 1 (Trinity Ophiolite).
Production data: Costa stated that he had 30 tons of chromite mined but not shipped on the Black Crow No. 1 claim (1941).
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsGallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Chromite | 4.BB.05 | Fe2+Cr3+2O4 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Chromite | Fe2+Cr23+O4 |
| Cr | Chromium | |
| Cr | ⓘ Chromite | Fe2+Cr23+O4 |
| Fe | Iron | |
| Fe | ⓘ Chromite | Fe2+Cr23+O4 |
Other Databases
| Link to USGS MRDS: | 10043522 |
|---|
Other Regions, Features and Areas containing this locality
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References
(n.d.) Minerals Availability System (MAS), U.S. Bureau of Mines.file ID #0061050092
