Eclipse Consolidated Mine (Eclipse Mine; Morning Star claim), Auburn, Ophir Mining District (Auburn Mining District; Duncan Hill Mining District), Placer Co., California, USAi
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Latitude & Longitude (WGS84):
38° 53' 37'' North , 121° 5' 12'' West
Latitude & Longitude (decimal):
Locality 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 Reference: Logan, Clarence August (1936), Gold mines of Placer County: California Journal of Mines and Geology, California Division Mines (Report 32): 32(1): 11, 22; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 108. |
ⓘ Chalcopyrite Formula: CuFeS2 Reference: Aubury, Lewis E. (1908), The copper resources of California: California Mining Bureau. Bulletin 50: 207, 210; Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 133. |
ⓘ Galena Formula: PbS Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. |
ⓘ Gold Formula: Au Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. |
ⓘ Pyrite Formula: FeS2 Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. |
ⓘ Quartz Formula: SiO2 Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. |
ⓘ Sphalerite Formula: ZnS Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. |
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 |
ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
ⓘ | Galena | 2.CD.10 | PbS |
ⓘ | Pyrite | 2.EB.05a | FeS2 |
ⓘ | Sphalerite | 2.CB.05a | ZnS |
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 | ⓘ Pyrite | FeS2 |
S | ⓘ Sphalerite | ZnS |
S | ⓘ Galena | PbS |
S | ⓘ Acanthite | Ag2S |
S | ⓘ Chalcopyrite | CuFeS2 |
Fe | Iron | |
Fe | ⓘ Pyrite | FeS2 |
Fe | ⓘ Chalcopyrite | CuFeS2 |
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 |
References
Sort by
Year (asc) Year (desc) Author (A-Z) Author (Z-A)Lindgren, Waldemar (1892), The gold deposit at Pine Hill, California: American Journal of Science 3rd. series: 44: 92-96.
Lindgren, Waldemar (1894a), The gold-silver veins of Ophir, California: USGS 14th. Annual Report, part 2: 243-284; […(abstract): Mining and Scientific Press: 71: 216, 233 (1895); Journal of Geology: 4: 373-374 (1896); …Nature: 53: 466 (1896)]: 249, 284, Pl. 17.
Aubury, Lewis E. (1908), The copper resources of California: California Mining Bureau. Bulletin 50: 207, 210.
Waring, Clarence A. (1917), Placer County: Report 15 of the State Mineralogist, California State Mining Bureau: 338, Pl. by page 318.
Logan, Clarence August (1934), Mother Lode Gold Belt of California: California Division Mines Bulletin 108, 221 pp.: 207.
Logan, Clarence August (1936), Gold mines of Placer County: California Journal of Mines and Geology, California Division Mines (Report 32): 32(1): 11, 22, 4_.
Eric, J.C. (1948), Tabulation of Copper Deposits in California in: Copper in California: California Division of Mines Bulletin 144: 282.
Goodwin, Joseph Grant (1957) Lead and zinc in California. California Journal of Mines and Geology, Division of Mines: 53(3&4): 590.
Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 84, 133.
Clark, Wm. B. (1970a) Gold districts of California: California Division Mines & Geology Bulletin 193: 102.
Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 29 (map 2-17), 108.
USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10007708 & 10213204.
U.S. Bureau of Mines, Minerals Availability System (MAS) file #0060610157.
Other Databases
Link to USGS MRDS: | 10007708 |
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Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Foothills-Wallowa DomainDomain
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