Three Sisters Mine (Three Sisters veins), French Gulch, French Gulch Mining District, Klamath Mountains, Shasta County, California, USAi
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Latitude & Longitude (WGS84):
40° 43' 1'' North , 122° 38' 29'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| French Gulch | 346 (2011) | 1.8km |
| Lewiston | 1,193 (2011) | 14.0km |
| Keswick | 451 (2011) | 18.2km |
| Shasta | 1,771 (2011) | 18.2km |
| Central Valley (historical) | 4,340 (2015) | 23.1km |
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 |
|---|---|---|
| Shasta Gem & Mineral Society | Redding, California | 26km |
Mindat Locality ID:
92973
Long-form identifier:
mindat:1:2:92973:5
GUID (UUID V4):
63ca5b89-f6c1-4a8a-a85e-0a64b7167c81
A former lode Au mine located in sec. 15, T33N, R7W, MDM (coordinates estimated; section projected), 1.8 km (6,000 feet) N of French Gulch, on the divide between Dutch Gulch and Clear Creek. Located in 1895. The property consists of 4 claims. MRDS database stated accuracy for this location is 1,000 meters.
Mineralization is a gold-bearing vein system in rocks of the Bragdon Formation (siltstone and shale). The ore body is lenses which strike N50E and dip 70NW at a thickness of 0.61 meters. Controls for ore emplacement included a 3 foot thick fault zone. 3 veins are present. Arsenopyrite is disseminated through quartz material. Quartz porphyry forms a wall next to slate at depth. Tension fractures indicate that the hanging wall block of the fault is downdropped. Local rocks include carboniferous marine rocks, unit 4 (Eastern Klamath Mountains).
workings include underground openings comprised of 1 adit 1,350 feet long, 800 feet of drifts, a 200 foot stope, and a 120 foot winze. The ore shoot is 200 feet x 18 inches.
Production data are found in: Albers, J.P. (1965).
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Arsenopyrite Formula: FeAsS |
| ⓘ Gold Formula: Au |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Quartz Formula: SiO2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Gold | 1.AA.05 | Au |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| ⓘ | Arsenopyrite | 2.EB.20 | FeAsS |
| 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 |
| S | Sulfur | |
| S | ⓘ Arsenopyrite | FeAsS |
| S | ⓘ Pyrite | FeS2 |
| Fe | Iron | |
| Fe | ⓘ Arsenopyrite | FeAsS |
| Fe | ⓘ Pyrite | FeS2 |
| As | Arsenic | |
| As | ⓘ Arsenopyrite | FeAsS |
| Au | Gold | |
| Au | ⓘ Gold | Au |
Other Databases
| Link to USGS MRDS: | 10077605 |
|---|
Other Regions, Features and Areas containing this locality
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References
(n.d.) Minerals Availability System (MAS), U.S. Bureau of Mines.file ID #0060890412
