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West Belt, El Dorado County, California, USAi
Regional Level Types
West Belt- not defined -
El Dorado CountyCounty
CaliforniaState
USACountry

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PhotosMapsSearchMineralogy
Latitude & Longitude (WGS84):
38° North , 120° West (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~58km
Mindat Locality ID:
77956
Long-form identifier:
mindat:1:2:77956:5
GUID (UUID V4):
0


Continuation of the West Belt of Au mines into El Dorado County.

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

47 valid minerals. 1 (TL) - type locality of valid minerals.

Rock Types Recorded


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

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

Actinolite
Formula: ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Albite
Formula: Na(AlSi3O8)
Ankerite
Formula: Ca(Fe2+,Mg)(CO3)2
Arsenopyrite
Formula: FeAsS
Description: Only a trace is present in ore.
Bornite
Formula: Cu5FeS4
Description: Occurs as pseudomorph(s) after picrolite (CDMG specimen #7470).
Calcite
Formula: CaCO3
Chalcocite
Formula: Cu2S
Chalcopyrite
Formula: CuFeS2
Localities: Reported from at least 10 localities in this region.
Chromite
Formula: Fe2+Cr3+2O4
Localities: Reported from at least 22 localities in this region.
Cinnabar
Formula: HgS
Description: Occurs interstitially in slate and quartzite.
Clinochlore
Formula: Mg5Al(AlSi3O10)(OH)8
Clinochlore var. Chromium-bearing Clinochlore
Formula: Mg5(Al,Cr)2Si3O10(OH)8
Corundum
Formula: Al2O3
Cronstedtite
Formula: Fe2+2Fe3+((Si,Fe3+)2O5)(OH)4
Diopside
Formula: CaMgSi2O6
Dolomite
Formula: CaMg(CO3)2
Enstatite
Formula: Mg2Si2O6
Epidote
Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
'Fayalite-Forsterite Series'
'Feldspar Group'
Forsterite
Formula: Mg2(SiO4)
Galena
Formula: PbS
Localities: Reported from at least 6 localities in this region.
'Garnierite'
Hedenbergite
Formula: CaFe2+Si2O6
Hematite
Formula: Fe2O3
Hematite var. Specularite
Formula: Fe2O3
Hessite
Formula: Ag2Te
'Limonite'
Magnesiochromite
Formula: MgCr2O4
Magnetite
Formula: Fe2+Fe3+2O4
Malachite
Formula: Cu2(CO3)(OH)2
Molybdenite
Formula: MoS2
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Colour: Green
Description: Occurs as green flakes.
Muscovite var. Mariposite
Formula: K(Al,Cr)2(Al,Si)4O10(OH)2
Colour: Green
Description: Occurs as green flakes.
Muscovite var. Phengite
Formula: KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Colour: Green
Description: Occurs as green flakes.
Native Copper
Formula: Cu
Native Gold
Formula: Au
Localities: Reported from at least 87 localities in this region.
Native Iron
Formula: Fe
Native Iron var. Kamacite
Formula: (Fe,Ni)
Oldhamite
Formula: CaS
Pentlandite
Formula: (NixFey)Σ9S8
Pyrite
Formula: FeS2
Localities: Reported from at least 13 localities in this region.
Pyrite var. Gold-bearing Pyrite
Formula: FeS2
'Pyroxene Group'
Formula: ADSi2O6
Pyrrhotite
Formula: Fe1-xS
Quartz
Formula: SiO2
Localities: Reported from at least 56 localities in this region.
Riebeckite
Formula: ◻Na2(Fe2+3Fe3+2)Si8O22(OH)2
Roscoelite (TL)
Formula: KV3+2(AlSi3O10)(OH)2
Habit: radiating and foliated talc-like masses
Colour: Dark green; greenish grey in bulk, light greenish yellow in fragments
Description: Micaceous to ½ inch (1.25 cm) thick.
Rutile
Formula: TiO2
Schreibersite
Formula: (Fe,Ni)3P
'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4
Localities: Reported from at least 8 localities in this region.
'Silica'
'Soapstone'
Sphalerite
Formula: ZnS
Spinel
Formula: MgAl2O4
Stibnite
Formula: Sb2S3
Taenite
Formula: (Ni,Fe)
Talc
Formula: Mg3Si4O10(OH)2
Localities: Reported from at least 9 localities in this region.
Titanite
Formula: CaTiO(SiO4)
Tochilinite
Formula: Fe2+5-6(Mg,Fe2+)5S6(OH)10
Troilite
Formula: FeS

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Native Copper1.AA.05Cu
Native Gold1.AA.05Au
Native Iron1.AE.05Fe
var. Kamacite1.AE.05(Fe,Ni)
Taenite1.AE.10(Ni,Fe)
Schreibersite1.BD.05(Fe,Ni)3P
Group 2 - Sulphides and Sulfosalts
Chalcocite2.BA.05Cu2S
Bornite2.BA.15Cu5FeS4
Hessite2.BA.60Ag2Te
Pentlandite2.BB.15(NixFey)Σ9S8
Sphalerite2.CB.05aZnS
Chalcopyrite2.CB.10aCuFeS2
Pyrrhotite2.CC.10Fe1-xS
Troilite2.CC.10FeS
Galena2.CD.10PbS
Oldhamite2.CD.10CaS
Cinnabar2.CD.15aHgS
Stibnite2.DB.05Sb2S3
Molybdenite2.EA.30MoS2
Pyrite
var. Gold-bearing Pyrite
2.EB.05aFeS2
2.EB.05aFeS2
Arsenopyrite2.EB.20FeAsS
Tochilinite2.FD.35Fe2+5-6(Mg,Fe2+)5S6(OH)10
Group 4 - Oxides and Hydroxides
Chromite4.BB.05Fe2+Cr3+2O4
Magnesiochromite4.BB.05MgCr2O4
Magnetite4.BB.05Fe2+Fe3+2O4
Spinel4.BB.05MgAl2O4
Corundum4.CB.05Al2O3
Hematite4.CB.05Fe2O3
var. Specularite4.CB.05Fe2O3
Quartz4.DA.05SiO2
Rutile4.DB.05TiO2
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Ankerite5.AB.10Ca(Fe2+,Mg)(CO3)2
Dolomite5.AB.10CaMg(CO3)2
Malachite5.BA.10Cu2(CO3)(OH)2
Group 9 - Silicates
Forsterite9.AC.05Mg2(SiO4)
Titanite9.AG.15CaTiO(SiO4)
Epidote9.BG.05a(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Enstatite9.DA.05Mg2Si2O6
Diopside9.DA.15CaMgSi2O6
Hedenbergite9.DA.15CaFe2+Si2O6
Actinolite9.DE.10◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Riebeckite9.DE.25◻Na2(Fe2+3Fe3+2)Si8O22(OH)2
Talc9.EC.05Mg3Si4O10(OH)2
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
var. Phengite9.EC.15KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Roscoelite (TL)9.EC.15KV3+2(AlSi3O10)(OH)2
Muscovite
var. Mariposite
9.EC.15K(Al,Cr)2(Al,Si)4O10(OH)2
Clinochlore9.EC.55Mg5Al(AlSi3O10)(OH)8
var. Chromium-bearing Clinochlore9.EC.55Mg5(Al,Cr)2Si3O10(OH)8
Cronstedtite9.ED.15Fe2+2Fe3+((Si,Fe3+)2O5)(OH)4
Albite9.FA.35Na(AlSi3O8)
Unclassified
'Feldspar Group'-
'Limonite'-
'Fayalite-Forsterite Series'-
'Soapstone'-
'Pyroxene Group'-ADSi2O6
'Silica'-
'Garnierite'-
'Serpentine Subgroup'-D3[Si2O5](OH)4

List of minerals for each chemical element

HHydrogen
H Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
H ClinochloreMg5Al(AlSi3O10)(OH)8
H CronstedtiteFe22+Fe3+((Si,Fe3+)2O5)(OH)4
H Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
H Clinochlore var. Chromium-bearing ClinochloreMg5(Al,Cr)2Si3O10(OH)8
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 Riebeckite◻Na2(Fe32+Fe23+)Si8O22(OH)2
H RoscoeliteKV23+(AlSi3O10)(OH)2
H TalcMg3Si4O10(OH)2
H TochiliniteFe2+5-6(Mg,Fe2+)5S6(OH)10
H Muscovite var. MaripositeK(Al,Cr)2(Al,Si)4O10(OH)2
H Serpentine SubgroupD3[Si2O5](OH)4
CCarbon
C AnkeriteCa(Fe2+,Mg)(CO3)2
C CalciteCaCO3
C DolomiteCaMg(CO3)2
C MalachiteCu2(CO3)(OH)2
OOxygen
O Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
O AlbiteNa(AlSi3O8)
O AnkeriteCa(Fe2+,Mg)(CO3)2
O CalciteCaCO3
O ChromiteFe2+Cr23+O4
O ClinochloreMg5Al(AlSi3O10)(OH)8
O CorundumAl2O3
O CronstedtiteFe22+Fe3+((Si,Fe3+)2O5)(OH)4
O DiopsideCaMgSi2O6
O DolomiteCaMg(CO3)2
O EnstatiteMg2Si2O6
O Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
O ForsteriteMg2(SiO4)
O HedenbergiteCaFe2+Si2O6
O HematiteFe2O3
O Clinochlore var. Chromium-bearing ClinochloreMg5(Al,Cr)2Si3O10(OH)8
O MagnesiochromiteMgCr2O4
O MagnetiteFe2+Fe23+O4
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 Riebeckite◻Na2(Fe32+Fe23+)Si8O22(OH)2
O RoscoeliteKV23+(AlSi3O10)(OH)2
O RutileTiO2
O SpinelMgAl2O4
O TalcMg3Si4O10(OH)2
O TitaniteCaTiO(SiO4)
O TochiliniteFe2+5-6(Mg,Fe2+)5S6(OH)10
O Hematite var. SpeculariteFe2O3
O Fayalite-Forsterite Series
O Pyroxene GroupADSi2O6
O Muscovite var. MaripositeK(Al,Cr)2(Al,Si)4O10(OH)2
O Serpentine SubgroupD3[Si2O5](OH)4
NaSodium
Na AlbiteNa(AlSi3O8)
Na Riebeckite◻Na2(Fe32+Fe23+)Si8O22(OH)2
MgMagnesium
Mg Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Mg AnkeriteCa(Fe2+,Mg)(CO3)2
Mg ClinochloreMg5Al(AlSi3O10)(OH)8
Mg DiopsideCaMgSi2O6
Mg DolomiteCaMg(CO3)2
Mg EnstatiteMg2Si2O6
Mg ForsteriteMg2(SiO4)
Mg Clinochlore var. Chromium-bearing ClinochloreMg5(Al,Cr)2Si3O10(OH)8
Mg MagnesiochromiteMgCr2O4
Mg Muscovite var. PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Mg SpinelMgAl2O4
Mg TalcMg3Si4O10(OH)2
Mg TochiliniteFe2+5-6(Mg,Fe2+)5S6(OH)10
Mg Fayalite-Forsterite Series
AlAluminium
Al AlbiteNa(AlSi3O8)
Al ClinochloreMg5Al(AlSi3O10)(OH)8
Al CorundumAl2O3
Al Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Al Clinochlore var. Chromium-bearing ClinochloreMg5(Al,Cr)2Si3O10(OH)8
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al Muscovite var. PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Al RoscoeliteKV23+(AlSi3O10)(OH)2
Al SpinelMgAl2O4
Al Muscovite var. MaripositeK(Al,Cr)2(Al,Si)4O10(OH)2
SiSilicon
Si Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Si AlbiteNa(AlSi3O8)
Si ClinochloreMg5Al(AlSi3O10)(OH)8
Si CronstedtiteFe22+Fe3+((Si,Fe3+)2O5)(OH)4
Si DiopsideCaMgSi2O6
Si EnstatiteMg2Si2O6
Si Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Si ForsteriteMg2(SiO4)
Si HedenbergiteCaFe2+Si2O6
Si Clinochlore var. Chromium-bearing ClinochloreMg5(Al,Cr)2Si3O10(OH)8
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si Muscovite var. PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Si QuartzSiO2
Si Riebeckite◻Na2(Fe32+Fe23+)Si8O22(OH)2
Si RoscoeliteKV23+(AlSi3O10)(OH)2
Si TalcMg3Si4O10(OH)2
Si TitaniteCaTiO(SiO4)
Si Fayalite-Forsterite Series
Si Pyroxene GroupADSi2O6
Si Muscovite var. MaripositeK(Al,Cr)2(Al,Si)4O10(OH)2
Si Serpentine SubgroupD3[Si2O5](OH)4
PPhosphorus
P Schreibersite(Fe,Ni)3P
SSulfur
S ArsenopyriteFeAsS
S Pyrite var. Gold-bearing PyriteFeS2
S BorniteCu5FeS4
S ChalcopyriteCuFeS2
S ChalcociteCu2S
S CinnabarHgS
S GalenaPbS
S MolybdeniteMoS2
S OldhamiteCaS
S Pentlandite(NixFey)Σ9S8
S PyriteFeS2
S PyrrhotiteFe1-xS
S SphaleriteZnS
S StibniteSb2S3
S TochiliniteFe2+5-6(Mg,Fe2+)5S6(OH)10
S TroiliteFeS
KPotassium
K MuscoviteKAl2(AlSi3O10)(OH)2
K Muscovite var. PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
K RoscoeliteKV23+(AlSi3O10)(OH)2
K Muscovite var. MaripositeK(Al,Cr)2(Al,Si)4O10(OH)2
CaCalcium
Ca Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Ca AnkeriteCa(Fe2+,Mg)(CO3)2
Ca CalciteCaCO3
Ca DiopsideCaMgSi2O6
Ca DolomiteCaMg(CO3)2
Ca Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Ca HedenbergiteCaFe2+Si2O6
Ca OldhamiteCaS
Ca TitaniteCaTiO(SiO4)
TiTitanium
Ti RutileTiO2
Ti TitaniteCaTiO(SiO4)
VVanadium
V RoscoeliteKV23+(AlSi3O10)(OH)2
CrChromium
Cr ChromiteFe2+Cr23+O4
Cr Clinochlore var. Chromium-bearing ClinochloreMg5(Al,Cr)2Si3O10(OH)8
Cr MagnesiochromiteMgCr2O4
Cr Muscovite var. MaripositeK(Al,Cr)2(Al,Si)4O10(OH)2
FeIron
Fe Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Fe AnkeriteCa(Fe2+,Mg)(CO3)2
Fe ArsenopyriteFeAsS
Fe Pyrite var. Gold-bearing PyriteFeS2
Fe BorniteCu5FeS4
Fe ChalcopyriteCuFeS2
Fe ChromiteFe2+Cr23+O4
Fe CronstedtiteFe22+Fe3+((Si,Fe3+)2O5)(OH)4
Fe Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Fe HedenbergiteCaFe2+Si2O6
Fe HematiteFe2O3
Fe Native IronFe
Fe Native Iron var. Kamacite(Fe,Ni)
Fe MagnetiteFe2+Fe23+O4
Fe Pentlandite(NixFey)Σ9S8
Fe Muscovite var. PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Fe PyriteFeS2
Fe PyrrhotiteFe1-xS
Fe Riebeckite◻Na2(Fe32+Fe23+)Si8O22(OH)2
Fe Schreibersite(Fe,Ni)3P
Fe Taenite(Ni,Fe)
Fe TochiliniteFe2+5-6(Mg,Fe2+)5S6(OH)10
Fe TroiliteFeS
Fe Hematite var. SpeculariteFe2O3
Fe Fayalite-Forsterite Series
NiNickel
Ni Native Iron var. Kamacite(Fe,Ni)
Ni Pentlandite(NixFey)Σ9S8
Ni Schreibersite(Fe,Ni)3P
Ni Taenite(Ni,Fe)
CuCopper
Cu BorniteCu5FeS4
Cu ChalcopyriteCuFeS2
Cu ChalcociteCu2S
Cu Native CopperCu
Cu MalachiteCu2(CO3)(OH)2
ZnZinc
Zn SphaleriteZnS
AsArsenic
As ArsenopyriteFeAsS
MoMolybdenum
Mo MolybdeniteMoS2
AgSilver
Ag HessiteAg2Te
SbAntimony
Sb StibniteSb2S3
TeTellurium
Te HessiteAg2Te
AuGold
Au Native GoldAu
HgMercury
Hg CinnabarHgS
PbLead
Pb GalenaPbS

Localities in this Region

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