Mammoth Mine (Webster; Orcutt), Republican group (Republican claim; Mammoth claim; Orcutt claim; Harrison claim; White Oak claim), Hog Mountain, Jacksonville Mining District, Tuolumne County, California, USAi
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Latitude & Longitude (WGS84):
37° 51' 14'' North , 120° 23' 4'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Chinese Camp | 126 (2011) | 4.7km |
| Jamestown | 3,433 (2011) | 11.5km |
| Groveland | 601 (2011) | 13.4km |
| East Sonora | 2,266 (2011) | 13.9km |
| Sonora | 4,818 (2017) | 14.5km |
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 | 27km |
A former lode Au mine located in sec. 13, T1S, R14E, MDM, about 4.2 km (2.6 miles) SW of Hog Mountain, along the NE shore of the Don Pedro Reservoir (Tuolumne River), on the divide between the river and Smarts Gulch. MRDS database stated accuracy for this location is 100 meters. Operated as an independent mine in the earlier days. Incorporated into the holdings of the Republican group (Republican Mine) in later years.
Mineralization is a quartz vein deposit hosted in greenstone and slate. The ore body strikes N45W and dips 65NE at a thickness of 9.14 meters. The hanging wall is slate and the footwall is greenstone. Gouge seams up to 6 feet thick with the massive quartz vein as thick as 30 feet. Local rocks include Jurassic marine rocks, unit 1 (Western Sierra Nevada and Western Klamath Mountains).
Workings include underground openings comprised of 4 crosscut adits above one another, the lowest and longest being 675 feet, 500 feet below the outcrop. There is a 430 foot deep winze on this adit, along gouge and massive quartz on the hanging wall side. Principal development was in the mid 1890's.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsGallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Gold | 1.AA.05 | Au |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Quartz | SiO2 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| Au | Gold | |
| Au | ⓘ Gold | Au |
Other Databases
| Link to USGS MRDS: | 10077882 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Calaveras-Baker DomainDomain
- Sierra Nevada BatholithVolcanic Arc
USA
- California
- Mother Lode BeltBelt
- Sierra NevadaMountain Range
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References
(n.d.) Minerals Availability System (MAS), U.S. Bureau of Mines.file ID #0061090098
