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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 CountyCounty
CaliforniaState
USACountry

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06993490017272298654924.jpg
Chromium-bearing Clinochlore, etc.

Newcastle, Ophir Mining District, Placer County, California, USA
06993490017272298654924.jpg
Chromium-bearing Clinochlore, etc.

Newcastle, Ophir Mining District, Placer County, California, USA
06993490017272298654924.jpg
Chromium-bearing Clinochlore, etc.

Newcastle, Ophir Mining District, Placer County, California, USA
Latitude & Longitude (WGS84):
38° 52' 27'' North , 121° 7' 60'' West
Latitude & Longitude (decimal):
38.87417,-121.13333
GRN:
N26W69
Köppen climate type:
Csa : Hot-summer Mediterranean climate
Nearest Settlements:
PlacePopulationDistance
Newcastle1,224 (2011)0.0km
Penryn831 (2011)4.0km
Auburn13,953 (2017)5.5km
North Auburn13,022 (2011)7.8km
Loomis6,733 (2017)7.8km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Roseville Rock RollersRoseville, California19km
Fossils for Fun Society, Inc.North Highlands, California29km
Sacramento Valley Detecting BuffsNorth Highlands, California29km
El Dorado County Mineral and Gem SocietyPlacerville, California33km
Gold Country Treasure SeekersPlacerville, California33km
Mindat Locality ID:
209904
Long-form identifier:
mindat:1:2:209904:3
GUID (UUID V4):
0


A populated place (city) located principally along the W side of Interstate highway 80.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

Mineral list contains entries from the region specified including sub-localities

5 valid minerals.

Detailed Mineral List:

ⓘ Chromite
Formula: Fe2+Cr3+2O4
Description: Occurs as nodular masses coated by pennine, kämmererite and good crystals of uvarovite.
ⓘ Clinochlore
Formula: Mg5Al(AlSi3O10)(OH)8
ⓘ Clinochlore var. Chromium-bearing Clinochlore
Formula: Mg5(Al,Cr)2Si3O10(OH)8
ⓘ Clinochlore var. Pennine
Formula: Mg5Al(AlSi3O10)(OH)8
ⓘ Native Gold
Formula: Au
ⓘ Quartz
Formula: SiO2
ⓘ Uvarovite
Formula: Ca3Cr3+2(SiO4)3
Description: Occurs as good crystals.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘNative Gold1.AA.05Au
Group 4 - Oxides and Hydroxides
ⓘChromite4.BB.05Fe2+Cr3+2O4
ⓘQuartz4.DA.05SiO2
Group 9 - Silicates
ⓘUvarovite9.AD.25Ca3Cr3+2(SiO4)3
ⓘClinochlore9.EC.55Mg5Al(AlSi3O10)(OH)8
ⓘvar. Chromium-bearing Clinochlore9.EC.55Mg5(Al,Cr)2Si3O10(OH)8
ⓘvar. Pennine9.EC.55Mg5Al(AlSi3O10)(OH)8

List of minerals for each chemical element

HHydrogen
Hⓘ ClinochloreMg5Al(AlSi3O10)(OH)8
Hⓘ Clinochlore var. Chromium-bearing ClinochloreMg5(Al,Cr)2Si3O10(OH)8
Hⓘ Clinochlore var. PennineMg5Al(AlSi3O10)(OH)8
OOxygen
Oⓘ ChromiteFe2+Cr23+O4
Oⓘ ClinochloreMg5Al(AlSi3O10)(OH)8
Oⓘ Clinochlore var. Chromium-bearing ClinochloreMg5(Al,Cr)2Si3O10(OH)8
Oⓘ QuartzSiO2
Oⓘ UvaroviteCa3Cr23+(SiO4)3
Oⓘ Clinochlore var. PennineMg5Al(AlSi3O10)(OH)8
MgMagnesium
Mgⓘ ClinochloreMg5Al(AlSi3O10)(OH)8
Mgⓘ Clinochlore var. Chromium-bearing ClinochloreMg5(Al,Cr)2Si3O10(OH)8
Mgⓘ Clinochlore var. PennineMg5Al(AlSi3O10)(OH)8
AlAluminium
Alⓘ ClinochloreMg5Al(AlSi3O10)(OH)8
Alⓘ Clinochlore var. Chromium-bearing ClinochloreMg5(Al,Cr)2Si3O10(OH)8
Alⓘ Clinochlore var. PennineMg5Al(AlSi3O10)(OH)8
SiSilicon
Siⓘ ClinochloreMg5Al(AlSi3O10)(OH)8
Siⓘ Clinochlore var. Chromium-bearing ClinochloreMg5(Al,Cr)2Si3O10(OH)8
Siⓘ QuartzSiO2
Siⓘ UvaroviteCa3Cr23+(SiO4)3
Siⓘ Clinochlore var. PennineMg5Al(AlSi3O10)(OH)8
CaCalcium
Caⓘ UvaroviteCa3Cr23+(SiO4)3
CrChromium
Crⓘ ChromiteFe2+Cr23+O4
Crⓘ Clinochlore var. Chromium-bearing ClinochloreMg5(Al,Cr)2Si3O10(OH)8
Crⓘ UvaroviteCa3Cr23+(SiO4)3
FeIron
Feⓘ ChromiteFe2+Cr23+O4
AuGold
Auⓘ Native GoldAu

Localities in this Region

USA

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America PlateTectonic Plate

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 visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Melhase, John (1935c), Some garnet localities of California: Mineralogist: 3(11): 23
Murdoch, Joseph; Webb, Robert Wallace (1966) Minerals of California, Centennial Volume (1866-1966) - California Division of Mines and Geology, Bulletin 189. California Division of Mines and Geology. 559 pp.
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