Briar Cliff Mine (Briarcliffe Mines; Last Chance claim; Baldwin claim), Nashville (Quartzburg), Nashville Mining District, El Dorado County, California, USAi
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Latitude & Longitude (WGS84):
38° 33' 52'' North , 120° 49' 59'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| River Pines | 379 (2011) | 8.0km |
| Plymouth | 960 (2017) | 9.2km |
| Fiddletown | 235 (2011) | 9.5km |
| Deer Park | 1,384 (2018) | 13.1km |
| Drytown | 167 (2011) | 13.8km |
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 | 19km |
| Gold Country Treasure Seekers | Placerville, California | 19km |
| Amador County Gem & Mineral Society | Sutter Creek, California | 19km |
| Roseville Rock Rollers | Roseville, California | 45km |
| Fossils for Fun Society, Inc. | North Highlands, California | 49km |
A former lode Au mine located in sec. 1 & on the W edge of sec. 12, T8N, R10E, MDM, 1.9 km (1.2 miles) SSE of Nashville, along East Big Canyon Creek, on private land. Operated in the 1890's, 1909, 1914, 1932 to 1936, and 1940 to 1941. MRDS database stated accuracy for this location is 100 meters. The Last Chance claim is on the N and the Baldwin is on the S.
Mineralization is a vein deposit hosted in amphibolite and slate. The ore body strikes N10E and dips 66SE at a thickness of 4.57 meters. The vein dips 60 to 72SE and averages 15 feet in thickness. The hanging wall is amphibolite and the footwall is slate. Local rocks include Mesozoic volcanic rocks, unit 2 (Western Sierra Foothills and Western Klamath Mountains).
Workings include underground openings comprised of a 200 foot 70 degree inclined shaft with levels at 100 and 170 feet, a NE drift adit to the shaft and a 500 foot winze. Stoped from the 100 level to surface.
Production data are found in: Clark, Wm. B. & D.W. Carlson (1956).
Production statistics: Year: 1935: 3 grams Au/metric ton.
The best ore was from the hanging wall.
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: | 10006866 |
|---|
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
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