River Hill Mine (River Hill group; Gentle Annie claim; Hall Consolidated claim; New Era claim; Lyon claim; Lucky Star claim; Bell claim), Chili Bar, Placerville Mining District, El Dorado County, California, USAi
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Latitude & Longitude (WGS84):
38° 45' 8'' North , 120° 48' 28'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Placerville | 10,650 (2017) | 2.6km |
| Cold Springs | 446 (2011) | 5.5km |
| Diamond Springs | 11,037 (2011) | 6.4km |
| Deer Park | 1,384 (2018) | 7.9km |
| Coloma | 529 (2011) | 8.9km |
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 |
|---|---|---|
| El Dorado County Mineral and Gem Society | Placerville, California | 3km |
| Gold Country Treasure Seekers | Placerville, California | 3km |
| Amador County Gem & Mineral Society | Sutter Creek, California | 40km |
| Roseville Rock Rollers | Roseville, California | 42km |
| Fossils for Fun Society, Inc. | North Highlands, California | 49km |
A former lode Au mine located in sec. 6, T10N, R11E and in sec. 36, T11N, R11E, MDM, 1.9 km (1.2 miles) NW of Chili Bar and about 3 km (1.8 miles) N of Placerville, on private land. Operated during the period 1890 to 1906. MRDS database stated accuracy for this location is 500 meters.
Mineralization is a vein deposit hosted in slate. The ore body strikes NW and dips NE. There are 5 parallel veins in slate. Ore shoots are up to 150 feet wide and 30 feet thick. Local rocks include Jurassic marine rocks, unit 1 (Western Sierra Nevada and Western Klamath Mountains).
Workings include underground openings with a 600 foot and a 1,550 foot inclined shafts, a 2,400 foot adit and much drifting.
Production data are found in: Clark and Carlson (1956).
The ore ran $2.50 to $4.80 (period values) Au/ton. There was considerable production but no figures given.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Native Gold Formula: Au References: |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Gold | 1.AA.05 | Au |
List of minerals for each chemical element
| Au | Gold | |
|---|---|---|
| Au | ⓘ Native Gold | Au |
Other Databases
| Link to USGS MRDS: | 10034920 |
|---|
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 #0060170486
