Brunswick Mine (Brunswick vein; Miners' group), Deadwood area, French Gulch Mining District, Klamath Mountains, Shasta County, California, USAi
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Latitude & Longitude (WGS84):
40° 42' 21'' North , 122° 41' 42'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| French Gulch | 346 (2011) | 4.8km |
| Lewiston | 1,193 (2011) | 9.5km |
| Shasta | 1,771 (2011) | 20.8km |
| Weaverville | 3,600 (2011) | 21.0km |
| Keswick | 451 (2011) | 21.4km |
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 |
|---|---|---|
| Shasta Gem & Mineral Society | Redding, California | 29km |
Mindat Locality ID:
92490
Long-form identifier:
mindat:1:2:92490:7
GUID (UUID V4):
193c6953-7237-4b00-b2f8-d762247613e0
A former Au mine located 3.5 km (2.2 miles) ESE of Deadwood and 4.9 km (3.0 miles) W of French Gulch, between Brunswick Ridge and French Creek (stream). MRDS database stated accuracy for this location is 500 meters.
Mineralization is a vein deposit hosted in rocks of the Bragdon Formation (siltstone and shale) and diorite and porphyry. The ore body is tabular, strikes N80E, and dips 45N at 0.3 meters thick. The ore is in small quartz lenses and in a vein between slate on the hanging wall and diorite porphyry on the footwall. Local rocks include carboniferous marine rocks, unit 4 (Eastern Klamath Mountains).
Workings include surface and underground openings consisting of 6 adits at 100 to 800 foot long, 1,500 feet of drifts, 200 feet of stopes, 150 feet of raises and several open cuts.
Production data are found in: Albers, J.P. (1965).
3,700 ounces of Au were extracted prior to 1912. The highest grade ore was ½ ounce per 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 2 - Sulphides and Sulfosalts | |||
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
List of minerals for each chemical element
| S | Sulfur | |
|---|---|---|
| S | ⓘ Pyrite | FeS2 |
| Fe | Iron | |
| Fe | ⓘ Pyrite | FeS2 |
| Au | Gold | |
| Au | ⓘ Gold | Au |
Other Databases
| Link to USGS MRDS: | 10077612 |
|---|
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 #0060890425
