Little Illinois Mine, Drytown, Jackson-Plymouth Mining District, Amador County, California, USAi
| Regional Level Types | |
|---|---|
| Little Illinois Mine | Mine |
| Drytown | Census-designated Place |
| Jackson-Plymouth Mining District | Mining District |
| Amador County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
38° 26' 48'' North , 120° 50' 52'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Drytown | 167 (2011) | 0.9km |
| Amador City | 189 (2017) | 3.7km |
| Plymouth | 960 (2017) | 3.9km |
| Sutter Creek | 2,488 (2017) | 7.2km |
| Martell | 282 (2011) | 9.9km |
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 | 7km |
| El Dorado County Mineral and Gem Society | Placerville, California | 32km |
| Gold Country Treasure Seekers | Placerville, California | 32km |
| Calaveras Gem & Mineral Society | Angels Camp, California | 50km |
A former lode Au mine located in sec. 23, T7N, R10E, MDM, 0.8 km (0.5 mile) NE of Drytown, E & S of Dry Creek, on private land. Operated by the J. H. Thomas estate. Some assessment work was reportedly done in the 1860's. The mine was reopened during the period 1808 (1908 ?) to 1914, idle since. MRDS database stated accuracy for this location is 1,000 meters.
Mineralization is a quartz vein deposit hosted in greenstone and slate. The vein has an average thickness of 5 feet with a slate footwall and a greenstone hanging wall. Local rocks include Mesozoic volcanic rocks, unit 2 (Western Sierra Foothills and Western Klamath Mountains).
Workings include underground openings comprised of an inclined shaft 147 feet deep.
A few tons of good ore was milled from production during the period 1808 (1908 ?) to 1914.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Native Gold Formula: Au |
| ⓘ Quartz Formula: SiO2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native 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 | ⓘ Native Gold | Au |
Other Databases
| Link to USGS MRDS: | 10028160 |
|---|
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
- Mother Lode BeltBelt
- Amador County
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References
(n.d.) Minerals Availability System (MAS), U.S. Bureau of Mines.file #0060050171
