Three Stars Mine (Belmont vein; Columbia Mine; North Star claim; Middle Star claim; Morning Star claim), Belmont vein, Gold Hill, Ophir Mining District (Auburn Mining District; Duncan Hill Mining District), Placer County, California, USAi
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Latitude & Longitude (WGS84):
38° 55' 8'' North , 121° 10' 7'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Newcastle | 1,224 (2011) | 5.8km |
| Penryn | 831 (2011) | 7.4km |
| North Auburn | 13,022 (2011) | 7.6km |
| Auburn | 13,953 (2017) | 8.3km |
| Loomis | 6,733 (2017) | 11.1km |
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 |
|---|---|---|
| Roseville Rock Rollers | Roseville, California | 21km |
| Fossils for Fun Society, Inc. | North Highlands, California | 31km |
| Sacramento Valley Detecting Buffs | North Highlands, California | 31km |
| Nevada County Gem & Mineral Society | Grass Valley, California | 35km |
| El Dorado County Mineral and Gem Society | Placerville, California | 38km |
A former Au-Ag mine located in the W½ sec. 2, T12N, R7E, MDM, 2.2 km (1.4 mile) NNE of Gold Hill and 5.0 km (3.1 miles) NW of Ophir and 5 miles NE of Auburn (3 miles NW of Newcastle), on private (patented) land. The property is comprised of 3 patented claims. Owned by Apphia Vance Morgan (1935). Operated in 1889. MRDS database stated accuracy for this location is 500 meters.
Mineralization is a gold vein deposit hosted in granodiorite. The ore body strikes NE and dips 45 at a thickness of 0.91 meter. The vein is 3 feet 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 an overall depth of 396.24 meters and comprised of 3 shafts and a winze.
Production data are found in: Logan, Clarence August (1936).
A few thousand dollars from the Almont vein were reported in 1889. No other production records were found.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Native Gold Formula: Au |
| ⓘ Pyrargyrite Formula: Ag3SbS3 Description: Occurs in gold-quartz. |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Gold | 1.AA.05 | Au |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Pyrargyrite | 2.GA.05 | Ag3SbS3 |
List of minerals for each chemical element
| S | Sulfur | |
|---|---|---|
| S | ⓘ Pyrargyrite | Ag3SbS3 |
| Ag | Silver | |
| Ag | ⓘ Pyrargyrite | Ag3SbS3 |
| Sb | Antimony | |
| Sb | ⓘ Pyrargyrite | Ag3SbS3 |
| Au | Gold | |
| Au | ⓘ Native Gold | Au |
Other Databases
| Link to USGS MRDS: | 10007677 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Foothills-Wallowa DomainDomain
- Sierra Nevada BatholithVolcanic Arc
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References
(n.d.) Minerals Availability System (MAS), U.S. Bureau of Mines.file #0060610052
Three Stars Mine, Belmont vein, Gold Hill, Ophir Mining District, Placer County, California, USA