Duncan and Adams Mine, Logtown, El Dorado Mining District, El Dorado County, California, USAi
| Regional Level Types | |
|---|---|
| Duncan and Adams Mine | Mine |
| Logtown | - not defined - |
| El Dorado Mining District | Mining District |
| El Dorado County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
38° 39' 44'' North , 120° 50' 11'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Deer Park | 1,384 (2018) | 2.5km |
| Diamond Springs | 11,037 (2011) | 4.1km |
| Shingle Springs | 4,432 (2011) | 7.8km |
| Placerville | 10,650 (2017) | 8.2km |
| Cold Springs | 446 (2011) | 9.3km |
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 | 8km |
| Gold Country Treasure Seekers | Placerville, California | 8km |
| Amador County Gem & Mineral Society | Sutter Creek, California | 30km |
| Roseville Rock Rollers | Roseville, California | 40km |
| Fossils for Fun Society, Inc. | North Highlands, California | 47km |
A former lode Au mine located in secs. 1 & 2, T9N, R10E, MDM, 2.2 km (1.4 miles) NNE of Logtown (site) and about 1.4 mile SSE of El Dorado, on the W side of Deadman Creek and W of Tombstone Mountain. Operated in 1931. MRDS database stated accuracy for this location is 1,000 meters. The tailings are in the NW¼NW¼ sec. 2.
Mineralization is a vein deposit. Local rocks include Mesozoic volcanic rocks, unit 2 (Western Sierra Foothills and Western Klamath Mountains).
Workings include underground openings.
Production data are found in: Clark, Wm. B. & D.W. Carlson (1956).
Production statistics: Year: 1931, accurate; 8,306 grams of Au.
700 tons of ore were mined that yielded $10,266 (period values) (1931).
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: | 10006883 |
|---|
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 #0060170252
