Yellowstone Mine, Williams Peak, Hunter Valley Mining District, West Belt, Mariposa County, California, USAi
| Regional Level Types | |
|---|---|
| Yellowstone Mine | Mine |
| Williams Peak | Peak |
| Hunter Valley Mining District | Mining District |
| West Belt | - not defined - |
| Mariposa County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
37° 34' 19'' North , 120° 8' 38'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Bear Valley | 125 (2011) | 2.2km |
| Catheys Valley | 825 (2011) | 16.1km |
| Coulterville | 201 (2011) | 16.1km |
| Mariposa | 2,173 (2017) | 18.4km |
| Greeley Hill | 915 (2011) | 19.2km |
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 |
|---|---|---|
| Mariposa Gem & Mineral Club | Mariposa, California | 18km |
Mindat Locality ID:
82677
Long-form identifier:
mindat:1:2:82677:5
GUID (UUID V4):
24640e7f-d5fc-47eb-aed3-939ba18b7f39
Other/historical names associated with this locality:
Sirocco Mine; Yellowstone-Sirocco Mine
A former Au mine located in sec. 19, T4S, R17E, MDM, 4.0 km (2.5 miles) SE of Williams Peak and 2.2 km (7,200 feet) W of Bear Valley, in the headwaters area of Bear Creek (Hornitos Road). Discovered <1893. Operated by Glenn Coburn (1941). MRDS database stated accuracy for this location is 100 meters.
Mineralization is a vein deposit hosted in greenstone. The ore body is podiform, lenticular masses, strikes N40-45E and dips 75NW. The wall rocks are sheared and schistose pyroxene andesite greenstone. Local rocks include Mesozoic volcanic rocks, unit 2 (Western Sierra Foothills and Western Klamath Mountains).
Workings include underground openings with an overall depth of 128.02 meters and comprised of 2 shafts and adits. The underground workings are probably extensive based on the size of the dumps. None are accessible.
Local structures include a narrow shear zone.
Production data are found in: Bowen & Gray (1957).
No recent activity except for utilization of the extensive dumps for road base and fill.
List of minerals for each chemical element
Other Databases
| Link to USGS MRDS: | 10031020 |
|---|
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 #0060430316
