Walker Mine (Chaparral; Brushy Hill), Carmen City, Foothill Copper Belt, Calaveras County, California, USAi
Regional Level Types | |
---|---|
Walker Mine (Chaparral; Brushy Hill) | Mine |
Carmen City | City |
Foothill Copper Belt | Belt |
Calaveras County | County |
California | State |
USA | Country |
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Latitude & Longitude (WGS84):
38° 1' 25'' North , 120° 38' 34'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
Place | Population | Distance |
---|---|---|
Copperopolis | 3,671 (2011) | 4.7km |
Angels Camp | 2,677 (2012) | 10.3km |
Tuttletown | 668 (2011) | 16.4km |
Vallecito | 442 (2011) | 16.6km |
San Andreas | 2,783 (2011) | 19.4km |
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 | 10km |
Amador County Gem & Mineral Society | Sutter Creek, California | 43km |
Mindat Locality ID:
76180
Long-form identifier:
mindat:1:2:76180:3
GUID (UUID V4):
d5c1328e-9e1c-4c11-9f69-80f735bf5312
A former Cr mine located near the center of the E½ of sec. 15, T2N, R12E, MDM, about 5.35 km SE of Carmen City, and about 2 miles N of Copperopolis, along Black Creek (near the head of a gulch tributaryn to Black Creek). Discovered in 1917. MRDS database stated accuracy for this location is 1,000 meters.
The ore body strikes S00E and dips 00W. It is a disseminated body. The primary mode of origin was magmatic differentiation Primary ore contyrol was lithology. Wallrock alteration is intense (carbonitization). Ore hosted in highly sheared serpentine near the W contact of the serpentine with granodiorite. The maximum thickness of the massive ore was 2 feet. A small amount of disseminated ore is also present. To the W of the deposit the serpentine contains some asbestos. Local rocks include Mesozoic volcanic rocks, unit 2 (Western Sierra Foothills and Western Klamath Mountains).
Workings include surface and underground openings comprised of 3 open cuts, 3 partially caved shafts and 2 short drifts.
The recorded production is 71 long tons of 40% crhomic oxide ore.
Reserves are probasbly negligible.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
ⓘ 'Asbestos' |
ⓘ Formula: Fe2+Cr3+2O4 |
ⓘ Magnesiochromite Formula: MgCr2O4 |
ⓘ 'Serpentine Subgroup' Formula: D3[Si2O5](OH)4 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Group 4 - Oxides and Hydroxides | |||
---|---|---|---|
ⓘ | Magnesiochromite | 4.BB.05 | MgCr2O4 |
ⓘ | Chromite ? | 4.BB.05 | Fe2+Cr3+2O4 |
Unclassified | |||
ⓘ | 'Asbestos' | - | |
ⓘ | 'Serpentine Subgroup' | - | D3[Si2O5](OH)4 |
List of minerals for each chemical element
H | Hydrogen | |
---|---|---|
H | ⓘ Serpentine Subgroup | D3[Si2O5](OH)4 |
O | Oxygen | |
O | ⓘ Chromite | Fe2+Cr23+O4 |
O | ⓘ Magnesiochromite | MgCr2O4 |
O | ⓘ Serpentine Subgroup | D3[Si2O5](OH)4 |
Mg | Magnesium | |
Mg | ⓘ Magnesiochromite | MgCr2O4 |
Si | Silicon | |
Si | ⓘ Serpentine Subgroup | D3[Si2O5](OH)4 |
Cr | Chromium | |
Cr | ⓘ Chromite | Fe2+Cr23+O4 |
Cr | ⓘ Magnesiochromite | MgCr2O4 |
Fe | Iron | |
Fe | ⓘ Chromite | Fe2+Cr23+O4 |
Other Databases
Link to USGS MRDS: | 10028797 |
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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 #0060090407