Big Gulch claim, Volcano, Volcano Mining District, Amador County, California, USAi
| Regional Level Types | |
|---|---|
| Big Gulch claim | Claim |
| Volcano | Town |
| Volcano Mining District | Mining District |
| Amador County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
38° 29' 28'' North , 120° 39' 49'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Volcano | 115 (2017) | 6.1km |
| Fiddletown | 235 (2011) | 8.1km |
| Pine Grove | 2,219 (2011) | 8.7km |
| River Pines | 379 (2011) | 9.3km |
| Red Corral | 1,413 (2017) | 10.2km |
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 |
|---|---|---|
| Amador County Gem & Mineral Society | Sutter Creek, California | 16km |
| El Dorado County Mineral and Gem Society | Placerville, California | 29km |
| Gold Country Treasure Seekers | Placerville, California | 29km |
| Calaveras Gem & Mineral Society | Angels Camp, California | 48km |
Mindat Locality ID:
73494
Long-form identifier:
mindat:1:2:73494:2
GUID (UUID V4):
54ff6c2c-5274-4526-84c7-770ccc3c9dcc
A former Au-Mn occurrence/mine located in the NW¼ sec. 4 and in the SE¼SE¼ sec. 11, T7N, R12E, MDM, about 6.65 km NNW of Volcano, S of the Deadman Fork Dry Creek (5½ miles by road ESE of Fiddletown). Discovered in 1940. Owned by the U.S. government (1974). Operated by G. W. Vose, California (1974). MRDS database stated accuracy for this location is 1,000 meters. Located in an old hydraulic Au mining property.
Mineralization is a residual Mn deposit hosted in Pliocene andesite and sedimentary breccia. Low-grade Mn oxide (psilomelane) occurs in lateritic soils beneath a lava cap of andesitic breccia. The Mn oxides cement a regolithic breccia with quartz fragments. The manganiferous material is mostly below 10% Mn, although a few individual specimens were seen which might run 30% Mn. No commercial ore observed. Local rocks include Paleozoic marine rocks, undivided, unit 4 (Western Sierra Nevada).
Workings include surface openings comprised of a few small, shallow pits and one cut 14 feet long, 3 feet wide and 10 feet deep.
Analytical data results: Mn ore <10%.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ 'Psilomelane' |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Unclassified | |||
|---|---|---|---|
| ⓘ | 'Psilomelane' | - | |
List of minerals for each chemical element
Other Databases
| Link to USGS MRDS: | 10028301 |
|---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
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References
