Davenport Mine, Auburn, Ophir Mining District (Auburn Mining District; Duncan Hill Mining District), Placer County, California, USAi
| Regional Level Types | |
|---|---|
| Davenport Mine | Mine |
| Auburn | - not defined - |
| Ophir Mining District (Auburn Mining District; Duncan Hill Mining District) | Mining District |
| Placer County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
38° 53' 19'' North , 121° 3' 55'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Auburn | 13,953 (2017) | 1.3km |
| Cool | 4,100 (2017) | 4.4km |
| North Auburn | 13,022 (2011) | 5.0km |
| Newcastle | 1,224 (2011) | 6.1km |
| Penryn | 831 (2011) | 9.9km |
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 | 25km |
| El Dorado County Mineral and Gem Society | Placerville, California | 29km |
| Gold Country Treasure Seekers | Placerville, California | 29km |
| Fossils for Fun Society, Inc. | North Highlands, California | 35km |
| Sacramento Valley Detecting Buffs | North Highlands, California | 35km |
A Cu-Au occurrence/mine located in sec. 15, T12N, R8E, MDM, 1.3 km (0.8 mile) SE of Auburn proper, E of the county fairgrounds. MRDS database stated accuracy for this location is 500 meters.
Mineralization is a vein deposit hosted in slate. The ore body strikes S3E and dips 80E at a thickness of 0.61 meters. Local rocks include Mesozoic volcanic rocks, unit 2 (Western Sierra Foothills and Western Klamath Mountains).
Workings include underground openings with a length of 21.34 meters and comprised of a 70 foot inclined shaft.
Analytical data results: Reported values of 1% Cu and $0.75 (period values) in Au (per ton ??).
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Chalcopyrite Formula: CuFeS2 |
| ⓘ Malachite Formula: Cu2(CO3)(OH)2 |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Quartz Formula: SiO2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Malachite | 5.BA.10 | Cu2(CO3)(OH)2 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Malachite | Cu2(CO3)(OH)2 |
| C | Carbon | |
| C | ⓘ Malachite | Cu2(CO3)(OH)2 |
| O | Oxygen | |
| O | ⓘ Malachite | Cu2(CO3)(OH)2 |
| O | ⓘ Quartz | SiO2 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| S | Sulfur | |
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Pyrite | FeS2 |
| Fe | Iron | |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Pyrite | FeS2 |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
| Cu | ⓘ Malachite | Cu2(CO3)(OH)2 |
Other Databases
| Link to USGS MRDS: | 10095115 |
|---|
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 #0060610136
(1908, September) The Copper Resources of California. Bulletin 50. California State Mining Bureaup.209
