Diamond 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
This page is currently not sponsored. Click here to sponsor this page.
Latitude & Longitude (WGS84):
39° 11' 38'' North , 121° 3' 8'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Grass Valley | 12,944 (2017) | 2.9km |
| Alta Sierra | 6,911 (2011) | 5.8km |
| Nevada City | 3,152 (2017) | 8.1km |
| Rough and Ready | 963 (2011) | 8.3km |
| Penn Valley | 1,621 (2011) | 12.0km |
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 | 3km |
| Sutter Buttes Gem & Mineral Society | Marysville, California | 47km |
A former lode Au occurrence/mine located in the SE¼NE¼ (estimated) sec. 2, T15N, R8E, MDM, about 2.5 km NNW of La Barr Meadows and about 2 miles S of Grass Valley, on private (patented) land. The property comprises 69.72 acres. MRDS database stated accuracy for this location is 1,000 meters.
NOTE: USGS MRDS database file #10101208 presents geographical coordinates of -121.04659, 39.20683N, placing this locality in sec. 35, T16N, R8E; however, the same file states that the T&R value is sec. 2, T15N, R8E, in agreement with MRDS file #10139963.
Mineralization is hosted in syenite. The ore body strikes N and dips 38E at a thickness of 0.91 meter. Sulfides are concentrated near the footwall. The vein is 1.5 to 3 feet thick. Local rocks include Mesozoic granitic rocks, unit 3 (Sierra Nevada, Death Valley area, Northern Mojave Desert and Transverse Ranges) and/or Mesozoic volcanic rocks, unit 2 (Western Sierra Foothills and Western Klamath Mountains).
Workings include surface and underground openings with a length of 13.72 meters and an overall depth of 39.62 meters and are comprised of a shaft and a drift.
NOTE: USGS MRDS database file #10101208 presents geographical coordinates of -121.04659, 39.20683N, placing this locality in sec. 35, T16N, R8E; however, the same file states that the T&R value is sec. 2, T15N, R8E, in agreement with MRDS file #10139963.
Mineralization is hosted in syenite. The ore body strikes N and dips 38E at a thickness of 0.91 meter. Sulfides are concentrated near the footwall. The vein is 1.5 to 3 feet thick. Local rocks include Mesozoic granitic rocks, unit 3 (Sierra Nevada, Death Valley area, Northern Mojave Desert and Transverse Ranges) and/or Mesozoic volcanic rocks, unit 2 (Western Sierra Foothills and Western Klamath Mountains).
Workings include surface and underground openings with a length of 13.72 meters and an overall depth of 39.62 meters and are comprised of a shaft and a drift.
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 Databases
| Link to USGS MRDS: | 10101208 |
|---|
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
This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to
visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders
for access and that you are aware of all safety precautions necessary.
References
(n.d.) Minerals Availability System (MAS), U.S. Bureau of Mines.file #0060570121
