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Newcastle, Ophir Mining District (Auburn Mining District; Duncan Hill Mining District), Placer County, California, USAi
| Regional Level Types | |
|---|---|
| Newcastle | - 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° 52' 27'' North , 121° 7' 60'' West
Latitude & Longitude (decimal):
Kรถppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Newcastle | 1,224 (2011) | 0.0km |
| Penryn | 831 (2011) | 4.0km |
| Auburn | 13,953 (2017) | 5.5km |
| North Auburn | 13,022 (2011) | 7.8km |
| Loomis | 6,733 (2017) | 7.8km |
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 | 19km |
| Fossils for Fun Society, Inc. | North Highlands, California | 29km |
| Sacramento Valley Detecting Buffs | North Highlands, California | 29km |
| El Dorado County Mineral and Gem Society | Placerville, California | 33km |
| Gold Country Treasure Seekers | Placerville, California | 33km |
A populated place (city) located principally along the W side of Interstate highway 80.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
Mineral list contains entries from the region specified including sub-localities5 valid minerals.
Detailed Mineral List:
| โ Chromite Formula: Fe2+Cr3+2O4 Description: Occurs as nodular masses coated by pennine, kรคmmererite and good crystals of uvarovite. References: |
| โ Clinochlore Formula: Mg5Al(AlSi3O10)(OH)8 References: |
| โ Clinochlore var. Chromium-bearing Clinochlore Formula: Mg5(Al,Cr)2Si3O10(OH)8 References: |
| โ Clinochlore var. Pennine Formula: Mg5Al(AlSi3O10)(OH)8 References: |
| โ Native Gold Formula: Au Localities: Old Pacific Mine, Newcastle, Ophir Mining District (Auburn Mining District; Duncan Hill Mining District), Placer County, California, USA Ard Bell Placer Mine, Newcastle, Ophir Mining District (Auburn Mining District; Duncan Hill Mining District), Placer County, California, USA Burcham Placer Mine, Newcastle, Ophir Mining District (Auburn Mining District; Duncan Hill Mining District), Placer County, California, USA |
| โ Quartz Formula: SiO2 |
| โ Uvarovite Formula: Ca3Cr3+2(SiO4)3 Description: Occurs as good crystals. References: |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| โ | Native Gold | 1.AA.05 | Au |
| Group 4 - Oxides and Hydroxides | |||
| โ | Chromite | 4.BB.05 | Fe2+Cr3+2O4 |
| โ | Quartz | 4.DA.05 | SiO2 |
| Group 9 - Silicates | |||
| โ | Uvarovite | 9.AD.25 | Ca3Cr3+2(SiO4)3 |
| โ | Clinochlore | 9.EC.55 | Mg5Al(AlSi3O10)(OH)8 |
| โ | var. Chromium-bearing Clinochlore | 9.EC.55 | Mg5(Al,Cr)2Si3O10(OH)8 |
| โ | var. Pennine | 9.EC.55 | Mg5Al(AlSi3O10)(OH)8 |
List of minerals for each chemical element
Localities in this Region
- California
- Placer County
- Ophir Mining District (Auburn Mining District; Duncan Hill Mining District)
- Placer County
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
Newcastle, Ophir Mining District, Placer County, California, USA