Eclipse Consolidated Mine (Eclipse Mine; Morning Star claim), Auburn, Ophir Mining District (Auburn Mining District; Duncan Hill Mining District), Placer County, California, USAi
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Latitude & Longitude (WGS84):
38° 53' 37'' North , 121° 5' 12'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Auburn | 13,953 (2017) | 0.9km |
| North Auburn | 13,022 (2011) | 4.2km |
| Newcastle | 1,224 (2011) | 4.6km |
| Cool | 4,100 (2017) | 6.3km |
| Penryn | 831 (2011) | 8.5km |
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 | 23km |
| El Dorado County Mineral and Gem Society | Placerville, California | 31km |
| Gold Country Treasure Seekers | Placerville, California | 31km |
| Fossils for Fun Society, Inc. | North Highlands, California | 34km |
| Sacramento Valley Detecting Buffs | North Highlands, California | 34km |
A former Au-Cu-Ag-Pb-Zn mine located in the NW¼ sec. 17, T12N, R8E, MDM, the NW¼ sec. 17, T12N, R8E, MDM, about 1/8 mile NE of Ophir and about 2 miles W of Auburn, on private (patented) land. The claim has a total length of 2,475 feet. Owned by the Ophir-Nevada Mining and Milling Company (1940). MRDS database stated accuracy for this location is 500 meters.
Mineralization is a gold-bearing vein hosted in granodiorite and schist. The ore body strikes N70E and dips 45S at a thickness of 1.83 meters. The deposit has 7 veins a few inches to 6 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 underground openings with a length 472.44 meters and an overall depth of 161.54 meters, and comprised of shafts with 4 levels, stopes, drifts, an adit & 3 raises.
Production data are found in: Logan (1936); Goodwin (1957).
The ore was estimated to contain 9 ounces of Ag/ton and 2% sulfides.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Acanthite Formula: Ag2S |
| ⓘ Chalcopyrite Formula: CuFeS2 References: |
| ⓘ Galena Formula: PbS |
| ⓘ Gold Formula: Au |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Quartz Formula: SiO2 |
| ⓘ Sphalerite Formula: ZnS |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Gold | 1.AA.05 | Au |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Acanthite | 2.BA.35 | Ag2S |
| ⓘ | Sphalerite | 2.CB.05a | ZnS |
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Galena | 2.CD.10 | PbS |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| 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 | ⓘ Acanthite | Ag2S |
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Galena | PbS |
| S | ⓘ Pyrite | FeS2 |
| S | ⓘ Sphalerite | ZnS |
| Fe | Iron | |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Pyrite | FeS2 |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
| Zn | Zinc | |
| Zn | ⓘ Sphalerite | ZnS |
| Ag | Silver | |
| Ag | ⓘ Acanthite | Ag2S |
| Au | Gold | |
| Au | ⓘ Gold | Au |
| Pb | Lead | |
| Pb | ⓘ Galena | PbS |
Other Databases
| Link to USGS MRDS: | 10007708 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Foothills-Wallowa DomainDomain
- Sierra Nevada BatholithVolcanic Arc
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
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References
(n.d.) Minerals Availability System (MAS), U.S. Bureau of Mines.file #0060610157
(1908, September) The Copper Resources of California. Bulletin 50. California State Mining Bureaupages 207, 210
