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Auburn, Ophir Mining District (Auburn Mining District; Duncan Hill Mining District), Placer County, California, USAi
Regional Level Types
Auburn- not defined -
Ophir Mining District (Auburn Mining District; Duncan Hill Mining District)Mining District
Placer CountyCounty
CaliforniaState
USACountry

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PhotosMapsSearchMineralogy
00299650017272094593249.jpg
View of the Auburn gold mining area, ca. 1910.

Salsic Mine, Auburn, Ophir Mining District, Placer County, California, USA
03540770017272299669251.jpg
Pyrite

Auburn, Ophir Mining District, Placer County, California, USA
08448710017272094549393.jpg
Native Gold, etc.

Little Banner Mine, Auburn, Ophir Mining District, Placer County, California, USA
00299650017272094593249.jpg
View of the Auburn gold mining area, ca. 1910.

Salsic Mine, Auburn, Ophir Mining District, Placer County, California, USA
09087100017272298241401.jpg
Pyrite

Auburn, Ophir Mining District, Placer County, California, USA
08448710017272094549393.jpg
Native Gold, etc.

Little Banner Mine, Auburn, Ophir Mining District, Placer County, California, USA
00299650017272094593249.jpg
View of the Auburn gold mining area, ca. 1910.

Salsic Mine, Auburn, Ophir Mining District, Placer County, California, USA
07281800017272299667072.jpg
Pyrite

Auburn, Ophir Mining District, Placer County, California, USA
Latitude & Longitude (WGS84):
38° 53' 48'' North , 121° 4' 37'' West
Latitude & Longitude (decimal):
38.89667,-121.07694
GRN:
N26W69
Köppen climate type:
Csa : Hot-summer Mediterranean climate
Nearest Settlements:
PlacePopulationDistance
Auburn13,953 (2017)0.0km
North Auburn13,022 (2011)3.9km
Newcastle1,224 (2011)5.5km
Cool4,100 (2017)5.5km
Penryn831 (2011)9.4km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Roseville Rock RollersRoseville, California24km
El Dorado County Mineral and Gem SocietyPlacerville, California30km
Gold Country Treasure SeekersPlacerville, California30km
Fossils for Fun Society, Inc.North Highlands, California35km
Sacramento Valley Detecting BuffsNorth Highlands, California35km
Mindat Locality ID:
211518
Long-form identifier:
mindat:1:2:211518:7
GUID (UUID V4):
0


A populated place (city).

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded from this region.


Mineral List

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

13 valid minerals.

Detailed Mineral List:

ⓘ Acanthite
Formula: Ag2S
ⓘ Chalcopyrite
Formula: CuFeS2
Localities: Reported from at least 6 localities in this region.
ⓘ Galena
Formula: PbS
Localities: Reported from at least 10 localities in this region.
ⓘ Hausmannite
Formula: Mn2+Mn3+2O4
ⓘ Kalinite
Formula: KAl(SO4)2 · 11H2O
Description: Occurs in slates.
ⓘ Malachite
Formula: Cu2(CO3)(OH)2
ⓘ Molybdenite
Formula: MoS2
ⓘ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ Muscovite var. Mariposite
Formula: K(Al,Cr)2(Al,Si)4O10(OH)2
ⓘ Muscovite var. Phengite
Formula: KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
ⓘ Native Gold
Formula: Au
Localities: Reported from at least 31 localities in this region.
ⓘ Native Gold var. Electrum
Formula: (Au,Ag)
ⓘ Native Silver
Formula: Ag
ⓘ Pyrite
Formula: FeS2
Localities: Reported from at least 10 localities in this region.
ⓘ Quartz
Formula: SiO2
Localities: Reported from at least 27 localities in this region.
ⓘ Sphalerite
Formula: ZnS
ⓘ 'Tetrahedrite Subgroup'
Formula: Cu6(Cu4C2+2)Sb4S12S
Description: Occurs with sulphides.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘNative Gold
var. Electrum		1.AA.05(Au,Ag)
ⓘ1.AA.05Au
ⓘNative Silver1.AA.05Ag
Group 2 - Sulphides and Sulfosalts
ⓘAcanthite2.BA.35Ag2S
ⓘSphalerite2.CB.05aZnS
ⓘChalcopyrite2.CB.10aCuFeS2
ⓘGalena2.CD.10PbS
ⓘMolybdenite2.EA.30MoS2
ⓘPyrite2.EB.05aFeS2
ⓘ'Tetrahedrite Subgroup'2.GB.05Cu6(Cu4C2+2)Sb4S12S
Group 4 - Oxides and Hydroxides
ⓘHausmannite4.BB.10Mn2+Mn3+2O4
ⓘQuartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
ⓘMalachite5.BA.10Cu2(CO3)(OH)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘKalinite7.CC.15KAl(SO4)2 · 11H2O
Group 9 - Silicates
ⓘMuscovite9.EC.15KAl2(AlSi3O10)(OH)2
ⓘvar. Phengite9.EC.15KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
ⓘvar. Mariposite9.EC.15K(Al,Cr)2(Al,Si)4O10(OH)2

List of minerals for each chemical element

HHydrogen
Hⓘ KaliniteKAl(SO4)2 · 11H2O
Hⓘ MalachiteCu2(CO3)(OH)2
Hⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Hⓘ Muscovite var. PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Hⓘ Muscovite var. MaripositeK(Al,Cr)2(Al,Si)4O10(OH)2
CCarbon
Cⓘ MalachiteCu2(CO3)(OH)2
OOxygen
Oⓘ HausmanniteMn2+Mn23+O4
Oⓘ KaliniteKAl(SO4)2 · 11H2O
Oⓘ MalachiteCu2(CO3)(OH)2
Oⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Oⓘ Muscovite var. PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Oⓘ QuartzSiO2
Oⓘ Muscovite var. MaripositeK(Al,Cr)2(Al,Si)4O10(OH)2
MgMagnesium
Mgⓘ Muscovite var. PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
AlAluminium
Alⓘ KaliniteKAl(SO4)2 · 11H2O
Alⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Alⓘ Muscovite var. PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Alⓘ Muscovite var. MaripositeK(Al,Cr)2(Al,Si)4O10(OH)2
SiSilicon
Siⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Siⓘ Muscovite var. PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Siⓘ QuartzSiO2
Siⓘ Muscovite var. MaripositeK(Al,Cr)2(Al,Si)4O10(OH)2
SSulfur
Sⓘ AcanthiteAg2S
Sⓘ ChalcopyriteCuFeS2
Sⓘ GalenaPbS
Sⓘ KaliniteKAl(SO4)2 · 11H2O
Sⓘ MolybdeniteMoS2
Sⓘ PyriteFeS2
Sⓘ SphaleriteZnS
Sⓘ Tetrahedrite SubgroupCu6(Cu4C22+)Sb4S12S
KPotassium
Kⓘ KaliniteKAl(SO4)2 · 11H2O
Kⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Kⓘ Muscovite var. PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Kⓘ Muscovite var. MaripositeK(Al,Cr)2(Al,Si)4O10(OH)2
CrChromium
Crⓘ Muscovite var. MaripositeK(Al,Cr)2(Al,Si)4O10(OH)2
MnManganese
Mnⓘ HausmanniteMn2+Mn23+O4
FeIron
Feⓘ ChalcopyriteCuFeS2
Feⓘ Muscovite var. PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Feⓘ PyriteFeS2
CuCopper
Cuⓘ ChalcopyriteCuFeS2
Cuⓘ MalachiteCu2(CO3)(OH)2
Cuⓘ Tetrahedrite SubgroupCu6(Cu4C22+)Sb4S12S
ZnZinc
Znⓘ SphaleriteZnS
MoMolybdenum
Moⓘ MolybdeniteMoS2
AgSilver
Agⓘ AcanthiteAg2S
Agⓘ Native Gold var. Electrum(Au,Ag)
Agⓘ Native SilverAg
SbAntimony
Sbⓘ Tetrahedrite SubgroupCu6(Cu4C22+)Sb4S12S
AuGold
Auⓘ Native Gold var. Electrum(Au,Ag)
Auⓘ Native GoldAu
PbLead
Pbⓘ GalenaPbS

Localities in this Region

USA
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

Hanks, Henry Garber (1884), Fourth report of the State Mineralogist: California Mining Bureau. Report 4, 410 pp. (includes catalog of minerals of California pp. 63-410), and miscellaneous observations on mineral products): 68
Fairbanks, Harold W. (1890), Geology of the Mother Lode region: California Mining Bureau. Report 10: 47
Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 215, 293.
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