Alma Mine, Jackson, Jackson-Plymouth Mining District, Amador County, California, USAi
| Regional Level Types | |
|---|---|
| Alma Mine | Mine |
| Jackson | City |
| Jackson-Plymouth Mining District | Mining District |
| Amador County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
38° 20' 38'' North , 120° 46' 60'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Jackson | 4,649 (2017) | 1.0km |
| Martell | 282 (2011) | 2.8km |
| Sutter Creek | 2,488 (2017) | 5.7km |
| Mokelumne Hill | 646 (2011) | 8.3km |
| Amador City | 189 (2017) | 9.1km |
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 | 6km |
| Calaveras Gem & Mineral Society | Angels Camp, California | 37km |
| El Dorado County Mineral and Gem Society | Placerville, California | 43km |
| Gold Country Treasure Seekers | Placerville, California | 43km |
A former lode Au mine located in sec. 29, T6N, R11E, MDM, 1.1 km (0.7 mile) WSW of Jackson proper, along Jackson Creek, on private land. Operated by Ralph McGee. MRDS database stated accuracy for this location is 500 meters.
Mineralization is hosted in slate and diabase. A quartz vein lies between a sl;ate hanging wall and a diabase footwall. The diabase is brecciated. The slate bedding, which is 200 feet thick, is surrounded by the diabase. The vein branches , cropping out in two locations on the surface. Local rocks include Mesozoic volcanic rocks, unit 2 (Western Sierra Foothills and Western Klamath Mountains).
Workings include underground openings comprised of a 420 foot vertical shaft. At 375 feet a 60 degree inclined shaft 600 feet (deep ?). Drifts were driven at the bottom of the vertical shaft for 500 feet.
No production recorded.
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: | 10028254 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Calaveras-Baker DomainDomain
- Sierra Nevada BatholithVolcanic Arc
USA
- California
- Amador County
- Mother Lode BeltBelt
- Amador County
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