St. Francis Mine, Crystal Hill, Butte County, California, USAi
| Regional Level Types | |
|---|---|
| St. Francis Mine | Mine |
| Crystal Hill | Hill |
| Butte County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
39° 33' 25'' North , 121° 19' 51'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Forbestown | 320 (2011) | 7.0km |
| Berry Creek | 1,424 (2011) | 11.6km |
| Challenge-Brownsville | 1,148 (2011) | 11.8km |
| Rackerby | 204 (2017) | 13.1km |
| Oroville East | 8,280 (2011) | 13.4km |
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 |
|---|---|---|
| Feather River Lapidary & Mineral Society | Oroville, California | 20km |
| Paradise Gem & Mineral Club | Paradise, California | 34km |
| Nevada County Gem & Mineral Society | Grass Valley, California | 44km |
A former lode Au mine located in the SW¼SW¼ sec. 28 & in the NW¼NW¼ sec. 33, T20N, R6E, MDM (The original record had no geographic coordinates; these coordinates were derived from the PLSS description provided), 3.6 km (2.2 miles) ESE of Crystal Hill. MRDS database stated accuracy for this location is 500 meters.
Mineralization is hosted in granodiorite. Two quartz veins strike ENE in granodiorite. Local rocks include Mesozoic granitic rocks, unit 3 (Sierra Nevada, Death Valley area, Northern Mojave Desert and Transverse Ranges).
Wrkings include surface and underground openings comprised of a shaft, adit and several pits.
Analytical data results: Sulfides assayed 0.15 - 0.20 ounces Au/ton.
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: | 10035991 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Foothills-Wallowa DomainDomain
- Sierra Nevada BatholithVolcanic Arc
USA
- Sierra NevadaMountain Range
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References
(n.d.) Minerals Availability System (MAS), U.S. Bureau of Mines.file ID #0060070231
