Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Yankee Fork Mining District, Custer County, Idaho, USAi
Regional Level Types
Yankee Fork Mining DistrictMining District
Custer CountyCounty
IdahoState
USACountry

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PhotosMapsSearchMineralogy
09145020017272069506018.jpg
McFadden Compressor

McFadden Group Mine, Yankee Fork Mining District, Custer County, Idaho, USA
06572670017272069515700.jpg
Cabin

McFadden Group Mine, Yankee Fork Mining District, Custer County, Idaho, USA
03861830017272069523988.jpg
Aguilarite

4th of July Mine, Yankee Fork Mining District, Custer County, Idaho, USA
09145020017272069506018.jpg
McFadden Compressor

McFadden Group Mine, Yankee Fork Mining District, Custer County, Idaho, USA
06572670017272069515700.jpg
Cabin

McFadden Group Mine, Yankee Fork Mining District, Custer County, Idaho, USA
03861830017272069523988.jpg
Aguilarite

4th of July Mine, Yankee Fork Mining District, Custer County, Idaho, USA
09145020017272069506018.jpg
McFadden Compressor

McFadden Group Mine, Yankee Fork Mining District, Custer County, Idaho, USA
06572670017272069515700.jpg
Cabin

McFadden Group Mine, Yankee Fork Mining District, Custer County, Idaho, USA


No description has been added for this locality. Can you add one?

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

36 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:

ⓘ Acanthite
Formula: Ag2S
Localities: Reported from at least 15 localities in this region.
ⓘ Aguilarite
Formula: Ag4SeS
ⓘ Arsenopyrite
Formula: FeAsS
ⓘ Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
ⓘ Azurite
Formula: Cu3(CO3)2(OH)2
ⓘ Baryte
Formula: BaSO4
ⓘ Bornite
Formula: Cu5FeS4
ⓘ Boulangerite
Formula: Pb5Sb4S11
ⓘ Brannerite
Formula: UTi2O6
ⓘ Calcite
Formula: CaCO3
Localities: Reported from at least 15 localities in this region.
ⓘ Cerussite
Formula: PbCO3
ⓘ Chalcocite
Formula: Cu2S
ⓘ Chalcopyrite
Formula: CuFeS2
Localities: Reported from at least 18 localities in this region.
ⓘ Chlorargyrite
Formula: AgCl
ⓘ 'Chlorite Group'
ⓘ Covellite
Formula: CuS
ⓘ Enargite
Formula: Cu3AsS4
ⓘ Euxenite-(Y)
Formula: (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
ⓘ Fluorite
Formula: CaF2
ⓘ 'Freibergite Subgroup'
Formula: (Ag6,[Ag6]4+)(Cu4 C2+2)Sb4S12S0-1
ⓘ Galena
Formula: PbS
Localities: Reported from at least 14 localities in this region.
ⓘ 'Garnet Group'
Formula: X3Z2(SiO4)3
ⓘ Geocronite
Formula: Pb14Sb6S23
ⓘ 'Hornblende Root Name Group'
Formula: ◻Ca2(C2+4C3+)(AlSi7O22)W2
ⓘ 'K Feldspar'
ⓘ 'K Feldspar var. Adularia'
Formula: KAlSi3O8
ⓘ Malachite
Formula: Cu2(CO3)(OH)2
ⓘ Miargyrite
Formula: AgSbS2
ⓘ Native Gold
Formula: Au
Localities: Reported from at least 23 localities in this region.
ⓘ Native Gold var. Electrum
Formula: (Au,Ag)
Localities: Reported from at least 9 localities in this region.
ⓘ Native Silver
Formula: Ag
Localities: Reported from at least 8 localities in this region.
ⓘ Naumannite
Formula: Ag2Se
ⓘ Orthoclase
Formula: K(AlSi3O8)
ⓘ Owyheeite
Formula: Ag3Pb10Sb11S28
ⓘ Polybasite
Formula: [Ag6Sb2S7][Ag9CuS4]
ⓘ Proustite
Formula: Ag3AsS3
ⓘ Pyrargyrite
Formula: Ag3SbS3
Localities: Reported from at least 7 localities in this region.
ⓘ Pyrite
Formula: FeS2
Localities: Reported from at least 22 localities in this region.
ⓘ Quartz
Formula: SiO2
Localities: Reported from at least 29 localities in this region.
ⓘ Quartz var. Amethyst
Formula: SiO2
ⓘ Quartz var. Chalcedony
Formula: SiO2
Localities: Reported from at least 6 localities in this region.
ⓘ Selenostephanite
Formula: Ag5SbSe4
ⓘ Sphalerite
Formula: ZnS
Localities: Reported from at least 12 localities in this region.
ⓘ Stephanite
Formula: Ag5SbS4
ⓘ 'Tetrahedrite Subgroup'
Formula: Cu6(Cu4C2+2)Sb4S12S
Localities: Reported from at least 12 localities in this region.
ⓘ 'Wad'
ⓘ Zircon
Formula: Zr(SiO4)

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
ⓘChalcocite2.BA.05Cu2S
ⓘBornite2.BA.15Cu5FeS4
ⓘAcanthite2.BA.35Ag2S
ⓘAguilarite2.BA.55Ag4SeS
ⓘNaumannite2.BA.55Ag2Se
ⓘCovellite2.CA.05aCuS
ⓘSphalerite2.CB.05aZnS
ⓘChalcopyrite2.CB.10aCuFeS2
ⓘGalena2.CD.10PbS
ⓘPyrite2.EB.05aFeS2
ⓘArsenopyrite2.EB.20FeAsS
ⓘProustite2.GA.05Ag3AsS3
ⓘPyrargyrite2.GA.05Ag3SbS3
ⓘ'Freibergite Subgroup'2.GB.05(Ag6,[Ag6]4+)(Cu4 C2+2)Sb4S12S0-1
ⓘ'Tetrahedrite Subgroup'2.GB.05Cu6(Cu4C2+2)Sb4S12S
ⓘSelenostephanite2.GB.10Ag5SbSe4
ⓘStephanite2.GB.10Ag5SbS4
ⓘPolybasite2.GB.15[Ag6Sb2S7][Ag9CuS4]
ⓘMiargyrite2.HA.10AgSbS2
ⓘBoulangerite2.HC.15Pb5Sb4S11
ⓘOwyheeite2.HC.35Ag3Pb10Sb11S28
ⓘGeocronite2.JB.30aPb14Sb6S23
ⓘEnargite2.KA.05Cu3AsS4
Group 3 - Halides
ⓘChlorargyrite3.AA.15AgCl
ⓘFluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
ⓘQuartz
var. Amethyst		4.DA.05SiO2
ⓘvar. Chalcedony4.DA.05SiO2
ⓘ4.DA.05SiO2
ⓘEuxenite-(Y)4.DG.05(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
ⓘBrannerite4.DH.05UTi2O6
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
ⓘCerussite5.AB.15PbCO3
ⓘAzurite5.BA.05Cu3(CO3)2(OH)2
ⓘMalachite5.BA.10Cu2(CO3)(OH)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘBaryte7.AD.35BaSO4
Group 9 - Silicates
ⓘZircon9.AD.30Zr(SiO4)
ⓘAugite9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
ⓘOrthoclase9.FA.30K(AlSi3O8)
Unclassified
ⓘ'K Feldspar
var. Adularia'		-KAlSi3O8
ⓘ'Chlorite Group'-
ⓘ'Wad'-
ⓘ'Hornblende Root Name Group'-◻Ca2(C2+4C3+)(AlSi7O22)W2
ⓘ'K Feldspar'-
ⓘ'Garnet Group'-X3Z2(SiO4)3

List of minerals for each chemical element

HHydrogen
Hⓘ AzuriteCu3(CO3)2(OH)2
Hⓘ MalachiteCu2(CO3)(OH)2
CCarbon
Cⓘ AzuriteCu3(CO3)2(OH)2
Cⓘ CalciteCaCO3
Cⓘ CerussitePbCO3
Cⓘ MalachiteCu2(CO3)(OH)2
OOxygen
Oⓘ K Feldspar var. AdulariaKAlSi3O8
Oⓘ Quartz var. AmethystSiO2
Oⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Oⓘ AzuriteCu3(CO3)2(OH)2
Oⓘ BaryteBaSO4
Oⓘ BranneriteUTi2O6
Oⓘ CalciteCaCO3
Oⓘ CerussitePbCO3
Oⓘ Quartz var. ChalcedonySiO2
Oⓘ Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Oⓘ MalachiteCu2(CO3)(OH)2
Oⓘ OrthoclaseK(AlSi3O8)
Oⓘ QuartzSiO2
Oⓘ ZirconZr(SiO4)
Oⓘ Hornblende Root Name Group◻Ca2(C42+C3+)(AlSi7O22)W2
Oⓘ Garnet GroupX3Z2(SiO4)3
FFluorine
Fⓘ FluoriteCaF2
MgMagnesium
Mgⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
AlAluminium
Alⓘ K Feldspar var. AdulariaKAlSi3O8
Alⓘ OrthoclaseK(AlSi3O8)
Alⓘ Hornblende Root Name Group◻Ca2(C42+C3+)(AlSi7O22)W2
SiSilicon
Siⓘ K Feldspar var. AdulariaKAlSi3O8
Siⓘ Quartz var. AmethystSiO2
Siⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Siⓘ Quartz var. ChalcedonySiO2
Siⓘ OrthoclaseK(AlSi3O8)
Siⓘ QuartzSiO2
Siⓘ ZirconZr(SiO4)
Siⓘ Hornblende Root Name Group◻Ca2(C42+C3+)(AlSi7O22)W2
Siⓘ Garnet GroupX3Z2(SiO4)3
SSulfur
Sⓘ AcanthiteAg2S
Sⓘ AguilariteAg4SeS
Sⓘ ArsenopyriteFeAsS
Sⓘ BaryteBaSO4
Sⓘ BorniteCu5FeS4
Sⓘ BoulangeritePb5Sb4S11
Sⓘ ChalcopyriteCuFeS2
Sⓘ ChalcociteCu2S
Sⓘ CovelliteCuS
Sⓘ EnargiteCu3AsS4
Sⓘ Freibergite Subgroup(Ag6,[Ag6]4+)(Cu4 C22+)Sb4S12S0-1
Sⓘ GalenaPbS
Sⓘ GeocronitePb14Sb6S23
Sⓘ MiargyriteAgSbS2
Sⓘ OwyheeiteAg3Pb10Sb11S28
Sⓘ Polybasite[Ag6Sb2S7][Ag9CuS4]
Sⓘ ProustiteAg3AsS3
Sⓘ PyrargyriteAg3SbS3
Sⓘ PyriteFeS2
Sⓘ SphaleriteZnS
Sⓘ StephaniteAg5SbS4
Sⓘ Tetrahedrite SubgroupCu6(Cu4C22+)Sb4S12S
ClChlorine
Clⓘ ChlorargyriteAgCl
KPotassium
Kⓘ K Feldspar var. AdulariaKAlSi3O8
Kⓘ OrthoclaseK(AlSi3O8)
CaCalcium
Caⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Caⓘ CalciteCaCO3
Caⓘ Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Caⓘ FluoriteCaF2
Caⓘ Hornblende Root Name Group◻Ca2(C42+C3+)(AlSi7O22)W2
TiTitanium
Tiⓘ BranneriteUTi2O6
Tiⓘ Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
FeIron
Feⓘ ArsenopyriteFeAsS
Feⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Feⓘ BorniteCu5FeS4
Feⓘ ChalcopyriteCuFeS2
Feⓘ PyriteFeS2
CuCopper
Cuⓘ AzuriteCu3(CO3)2(OH)2
Cuⓘ BorniteCu5FeS4
Cuⓘ ChalcopyriteCuFeS2
Cuⓘ ChalcociteCu2S
Cuⓘ CovelliteCuS
Cuⓘ EnargiteCu3AsS4
Cuⓘ Freibergite Subgroup(Ag6,[Ag6]4+)(Cu4 C22+)Sb4S12S0-1
Cuⓘ MalachiteCu2(CO3)(OH)2
Cuⓘ Polybasite[Ag6Sb2S7][Ag9CuS4]
Cuⓘ Tetrahedrite SubgroupCu6(Cu4C22+)Sb4S12S
ZnZinc
Znⓘ SphaleriteZnS
AsArsenic
Asⓘ ArsenopyriteFeAsS
Asⓘ EnargiteCu3AsS4
Asⓘ ProustiteAg3AsS3
SeSelenium
Seⓘ AguilariteAg4SeS
Seⓘ NaumanniteAg2Se
Seⓘ SelenostephaniteAg5SbSe4
YYttrium
Yⓘ Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
ZrZirconium
Zrⓘ ZirconZr(SiO4)
NbNiobium
Nbⓘ Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
AgSilver
Agⓘ AcanthiteAg2S
Agⓘ AguilariteAg4SeS
Agⓘ ChlorargyriteAgCl
Agⓘ Native Gold var. Electrum(Au,Ag)
Agⓘ Freibergite Subgroup(Ag6,[Ag6]4+)(Cu4 C22+)Sb4S12S0-1
Agⓘ MiargyriteAgSbS2
Agⓘ NaumanniteAg2Se
Agⓘ OwyheeiteAg3Pb10Sb11S28
Agⓘ Polybasite[Ag6Sb2S7][Ag9CuS4]
Agⓘ ProustiteAg3AsS3
Agⓘ PyrargyriteAg3SbS3
Agⓘ SelenostephaniteAg5SbSe4
Agⓘ Native SilverAg
Agⓘ StephaniteAg5SbS4
SbAntimony
Sbⓘ BoulangeritePb5Sb4S11
Sbⓘ Freibergite Subgroup(Ag6,[Ag6]4+)(Cu4 C22+)Sb4S12S0-1
Sbⓘ GeocronitePb14Sb6S23
Sbⓘ MiargyriteAgSbS2
Sbⓘ OwyheeiteAg3Pb10Sb11S28
Sbⓘ Polybasite[Ag6Sb2S7][Ag9CuS4]
Sbⓘ PyrargyriteAg3SbS3
Sbⓘ SelenostephaniteAg5SbSe4
Sbⓘ StephaniteAg5SbS4
Sbⓘ Tetrahedrite SubgroupCu6(Cu4C22+)Sb4S12S
BaBarium
Baⓘ BaryteBaSO4
CeCerium
Ceⓘ Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
TaTantalum
Taⓘ Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
AuGold
Auⓘ Native Gold var. Electrum(Au,Ag)
Auⓘ Native GoldAu
PbLead
Pbⓘ BoulangeritePb5Sb4S11
Pbⓘ CerussitePbCO3
Pbⓘ GalenaPbS
Pbⓘ GeocronitePb14Sb6S23
Pbⓘ OwyheeiteAg3Pb10Sb11S28
ThThorium
Thⓘ Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
UUranium
Uⓘ BranneriteUTi2O6
Uⓘ Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6

Fossils

This region is too big or complex to display the fossil list, try looking at smaller subregions.

Localities in this Region

USA
USA

Other Regions, Features and Areas that Intersect

North AmericaContinent
North America PlateTectonic Plate
USA

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

Econ Geol (1985) 80:1277-1296
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