California Jack Mine, Fornis, Georgetown District, East Segment Mother Lode, El Dorado County, California, USAi
| Regional Level Types | |
|---|---|
| California Jack Mine | Mine |
| Fornis | Unincorporated Community |
| Georgetown District | Mining District |
| East Segment Mother Lode | Lode |
| El Dorado County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
38° 53' 7'' North , 120° 50' 59'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Georgetown | 2,367 (2011) | 2.6km |
| Auburn Lake Trails | 3,426 (2011) | 9.5km |
| Coloma | 529 (2011) | 10.1km |
| Cool | 4,100 (2017) | 14.3km |
| Foresthill | 1,483 (2011) | 15.2km |
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 |
|---|---|---|
| El Dorado County Mineral and Gem Society | Placerville, California | 18km |
| Gold Country Treasure Seekers | Placerville, California | 18km |
| Roseville Rock Rollers | Roseville, California | 41km |
| Nevada County Gem & Mineral Society | Grass Valley, California | 41km |
A former lode Au mine located in secs. 15 & 22, T12N, R10E, MDM, 1.3 km (0.8 mile) SE of Fornis and 2.6 km (8,600 feet) SSW of Georgetown, on the divide between Manhattan Creek and Empire Creek, NNE of Bald Hill. Operated prior to 1896. MRDS database accuracy for this location is not stated.
Mineralization is a vein deposit hosted in rocks of the Calaveras Complex (Mariposa slate). The ore body strikes N and dips 60E at a thickness of 3.66 meters. Local rocks include Mesozoic volcanic rocks, unit 2 (Western Sierra Foothills and Western Klamath Mountains).
Workings include underground openings comprised of a 350 foot cross cut adit with a 200 foot N drift and a 90 foot shaft. A 10-stamp mill was erected.
No production record was found.
Analytical data results: The ore contains 2% sulfides.
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: | 10030044 |
|---|
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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