Alaska Mine, Diamond - Bullion - Alaska Mine group (Consolidated Bullion Mine; Diamond claim; Bullion claim; Alaska claim; Union Jack claim; Galena claim; Ione claim; Big Diamond vein; Galena-Bullion vein; Alaska vein), La Barr Meadows, Grass Valley Mining District, Nevada County, California, USAi
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Latitude & Longitude (WGS84):
39° 10' 36'' North , 121° 2' 42'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Alta Sierra | 6,911 (2011) | 4.0km |
| Grass Valley | 12,944 (2017) | 4.9km |
| Nevada City | 3,152 (2017) | 9.7km |
| Rough and Ready | 963 (2011) | 9.9km |
| Colfax | 2,005 (2017) | 11.6km |
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 |
|---|---|---|
| Nevada County Gem & Mineral Society | Grass Valley, California | 5km |
| Sutter Buttes Gem & Mineral Society | Marysville, California | 47km |
A former lode Au occurrence/mine located in the SW¼ sec. 1 (lot 49), T15N, R8E, MDM, 0.2 km (0.1 mile) N of La Barr Meadows and about 2.5 miles SSE of Grass Valley, on private (patented) land. The property comprises 8.28 acres. MRDS database stated accuracy for this location is 500 meters. This mine was worked in conjunction with the Ben Franklin and Bullion Mines.
Mineralization is a vein deposit hosted in diorite. The ore body strikes N and dips 45E at a thickness of 0.91 meter. The vein is 8 to 36 inches (20 to 90 cm) thick. Local rocks include Mesozoic granitic rocks, unit 3 (Sierra Nevada, Death Valley area, Northern Mojave Desert and Transverse Ranges).
Workings include underground openings with a length of 487.68 meters and an overall depth of 152.4 meters and comprised of 2 shafts, a 586 foot drift on the 140 level, plus other drifts on the 220, 275 & 340 foot levels.
Production statistics: Year: 1877 (accurate): 98 grams Au/metric ton; 1878: 79 grams Au/metric ton.
Mineralization is a vein deposit hosted in diorite. The ore body strikes N and dips 45E at a thickness of 0.91 meter. The vein is 8 to 36 inches (20 to 90 cm) thick. Local rocks include Mesozoic granitic rocks, unit 3 (Sierra Nevada, Death Valley area, Northern Mojave Desert and Transverse Ranges).
Workings include underground openings with a length of 487.68 meters and an overall depth of 152.4 meters and comprised of 2 shafts, a 586 foot drift on the 140 level, plus other drifts on the 220, 275 & 340 foot levels.
Production statistics: Year: 1877 (accurate): 98 grams Au/metric ton; 1878: 79 grams Au/metric ton.
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 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 #0060570086
