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Tin Mountain Mine, Fourmile, Custer Mining District, Custer County, South Dakota, USAi
Regional Level Types
Tin Mountain MineMine
FourmileUnincorporated Community
Custer Mining DistrictMining District
Custer CountyCounty
South DakotaState
USACountry

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Latitude & Longitude (WGS84):
43° 44' 48'' North , 103° 43' 14'' West
Latitude & Longitude (decimal):
Type:
Nearest Settlements:
PlacePopulationDistance
Custer1,952 (2017)10.0km
Pringle109 (2017)18.4km
Hill City995 (2017)23.7km
Keystone343 (2017)29.3km
Hill View Heights170 (2006)36.3km
Mindat Locality ID:
4121
Long-form identifier:
mindat:1:2:4121:1
GUID (UUID V4):
0


A Li-Cs-Be-niobium-tantalum-mica-quartz mine in pegmatite located in secs. 35, 36, T.3S., R.3E., at Fourmile near Custer.

Mineralization is an irregular, L-shaped, zoned pegmatite body in schist. Rare-element pegmatite.

Workings include 12 open cuts, 2 tunnels and a shaft with 2 levels and stopes.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


46 valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

Albite
Formula: Na(AlSi3O8)
Albite var. Andesine
Formula: (Na,Ca)[Al(Si,Al)Si2O8]
Almandine
Formula: Fe2+3Al2(SiO4)3
Amblygonite
Formula: LiAl(PO4)F
References:
Aurichalcite
Formula: (Zn,Cu)5(CO3)2(OH)6
Autunite
Formula: Ca(UO2)2(PO4)2 · 10-12H2O
Azurite
Formula: Cu3(CO3)2(OH)2
Beryl
Formula: Be3Al2(Si6O18)
References:
Beryl var. Morganite
Formula: Be3Al2(Si6O18)
'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Bismuthinite
Formula: Bi2S3
Bornite
Formula: Cu5FeS4
Calcite
Formula: CaCO3
Cassiterite
Formula: SnO2
Chalcopyrite
Formula: CuFeS2
'Chlorite Group'
'Columbite-Tantalite'
References:
Cookeite
Formula: (LiAl4◻)[AlSi3O10](OH)8
Covellite
Formula: CuS
Dawsonite
Formula: NaAlCO3(OH)2
Fluorapatite
Formula: Ca5(PO4)3F
Fourmarierite
Formula: Pb(UO2)4O3(OH)4 · 4H2O
Goethite
Formula: Fe3+O(OH)
Hemimorphite
Formula: Zn4Si2O7(OH)2 · H2O
Hydrozincite
Formula: Zn5(CO3)2(OH)6
Kaolinite
Formula: Al2(Si2O5)(OH)4
Kasolite
Formula: Pb(UO2)(SiO4) · H2O
'Lepidolite'
References:
'Limonite'
Löllingite
Formula: FeAs2
Magnetite
Formula: Fe2+Fe3+2O4
Malachite
Formula: Cu2(CO3)(OH)2
Meta-autunite
Formula: Ca(UO2)2(PO4)2 · 6H2O
Microcline
Formula: K(AlSi3O8)
'Microlite Group'
Formula: A2-mTa2X6-wZ-n
References:
Montebrasite
Formula: LiAl(PO4)(OH)
Montmorillonite
Formula: (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Native Bismuth
Formula: Bi
Pollucite
Formula: (Cs,Na)2(Al2Si4O12) · 2H2O
References:
Pyrolusite
Formula: Mn4+O2
Quartz
Formula: SiO2
Quartz var. Smoky Quartz
Formula: SiO2
Schorl
Formula: NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
Siderite
Formula: FeCO3
Smithsonite
Formula: ZnCO3
Sphalerite
Formula: ZnS
Spodumene
Formula: LiAlSi2O6
Spodumene var. Kunzite
Formula: LiAlSi2O6
'Tantalite'
Formula: (Mn,Fe)(Ta,Nb)2O6
Triphylite
Formula: LiFe2+PO4
Triphylite var. Ferrisicklerite
Formula: Li1-x(Fe3+xFe2+1-x)PO4
Turquoise ?
Formula: CuAl6(PO4)4(OH)8 · 4H2O
Uraninite
Formula: UO2
Uranophane
Formula: Ca(UO2)2(SiO3OH)2 · 5H2O
Vandendriesscheite
Formula: PbU7O22 · 12H2O
Xenotime-(Y)
Formula: Y(PO4)
Zircon
Formula: Zr(SiO4)

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Native Bismuth1.CA.05Bi
Group 2 - Sulphides and Sulfosalts
Bornite2.BA.15Cu5FeS4
Covellite2.CA.05aCuS
Sphalerite2.CB.05aZnS
Chalcopyrite2.CB.10aCuFeS2
Bismuthinite2.DB.05Bi2S3
Löllingite2.EB.15aFeAs2
Group 4 - Oxides and Hydroxides
Goethite4.00.Fe3+O(OH)
'Microlite Group'4.00.A2-mTa2X6-wZ-n
Magnetite4.BB.05Fe2+Fe3+2O4
Quartz4.DA.05SiO2
var. Smoky Quartz4.DA.05SiO2
Cassiterite4.DB.05SnO2
Pyrolusite4.DB.05Mn4+O2
Uraninite4.DL.05UO2
Fourmarierite4.GB.25Pb(UO2)4O3(OH)4 · 4H2O
Vandendriesscheite4.GB.40PbU7O22 · 12H2O
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Siderite5.AB.05FeCO3
Smithsonite5.AB.05ZnCO3
Azurite5.BA.05Cu3(CO3)2(OH)2
Malachite5.BA.10Cu2(CO3)(OH)2
Aurichalcite5.BA.15(Zn,Cu)5(CO3)2(OH)6
Hydrozincite5.BA.15Zn5(CO3)2(OH)6
Dawsonite5.BB.10NaAlCO3(OH)2
Group 8 - Phosphates, Arsenates and Vanadates
Triphylite
var. Ferrisicklerite
8.AB.10Li1-x(Fe3+xFe2+1-x)PO4
8.AB.10LiFe2+PO4
Xenotime-(Y)8.AD.35Y(PO4)
Amblygonite8.BB.05LiAl(PO4)F
Montebrasite8.BB.05LiAl(PO4)(OH)
Fluorapatite8.BN.05Ca5(PO4)3F
Turquoise ?8.DD.15CuAl6(PO4)4(OH)8 · 4H2O
Autunite8.EB.05Ca(UO2)2(PO4)2 · 10-12H2O
Meta-autunite8.EB.10Ca(UO2)2(PO4)2 · 6H2O
Group 9 - Silicates
Almandine9.AD.25Fe2+3Al2(SiO4)3
Zircon9.AD.30Zr(SiO4)
Kasolite9.AK.15Pb(UO2)(SiO4) · H2O
Uranophane9.AK.15Ca(UO2)2(SiO3OH)2 · 5H2O
Hemimorphite9.BD.10Zn4Si2O7(OH)2 · H2O
Beryl9.CJ.05Be3Al2(Si6O18)
var. Morganite9.CJ.05Be3Al2(Si6O18)
Schorl9.CK.05NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
Spodumene
var. Kunzite
9.DA.30LiAlSi2O6
9.DA.30LiAlSi2O6
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
Montmorillonite9.EC.40(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Cookeite9.EC.55(LiAl4◻)[AlSi3O10](OH)8
Kaolinite9.ED.05Al2(Si2O5)(OH)4
Microcline9.FA.30K(AlSi3O8)
Albite9.FA.35Na(AlSi3O8)
var. Andesine9.FA.35(Na,Ca)[Al(Si,Al)Si2O8]
Pollucite9.GB.05(Cs,Na)2(Al2Si4O12) · 2H2O
Unclassified
'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
'Chlorite Group'-
'Lepidolite'-
'Limonite'-
'Tantalite'-(Mn,Fe)(Ta,Nb)2O6
'Columbite-Tantalite'-

List of minerals for each chemical element

HHydrogen
H Aurichalcite(Zn,Cu)5(CO3)2(OH)6
H AutuniteCa(UO2)2(PO4)2 · 10-12H2O
H AzuriteCu3(CO3)2(OH)2
H BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
H Cookeite(LiAl4◻)[AlSi3O10](OH)8
H DawsoniteNaAlCO3(OH)2
H FourmarieritePb(UO2)4O3(OH)4 · 4H2O
H GoethiteFe3+O(OH)
H HemimorphiteZn4Si2O7(OH)2 · H2O
H HydrozinciteZn5(CO3)2(OH)6
H KaoliniteAl2(Si2O5)(OH)4
H KasolitePb(UO2)(SiO4) · H2O
H MalachiteCu2(CO3)(OH)2
H Meta-autuniteCa(UO2)2(PO4)2 · 6H2O
H MontebrasiteLiAl(PO4)(OH)
H MuscoviteKAl2(AlSi3O10)(OH)2
H Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
H Pollucite(Cs,Na)2(Al2Si4O12) · 2H2O
H SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
H TurquoiseCuAl6(PO4)4(OH)8 · 4H2O
H UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
H VandendriesscheitePbU7O22 · 12H2O
LiLithium
Li AmblygoniteLiAl(PO4)F
Li Cookeite(LiAl4◻)[AlSi3O10](OH)8
Li Triphylite var. FerrisickleriteLi1-x(Fex3+Fe2+1-x)PO4
Li Spodumene var. KunziteLiAlSi2O6
Li MontebrasiteLiAl(PO4)(OH)
Li SpodumeneLiAlSi2O6
Li TriphyliteLiFe2+PO4
BeBeryllium
Be BerylBe3Al2(Si6O18)
Be Beryl var. MorganiteBe3Al2(Si6O18)
BBoron
B SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
CCarbon
C Aurichalcite(Zn,Cu)5(CO3)2(OH)6
C AzuriteCu3(CO3)2(OH)2
C CalciteCaCO3
C DawsoniteNaAlCO3(OH)2
C HydrozinciteZn5(CO3)2(OH)6
C MalachiteCu2(CO3)(OH)2
C SideriteFeCO3
C SmithsoniteZnCO3
OOxygen
O AlbiteNa(AlSi3O8)
O AmblygoniteLiAl(PO4)F
O Albite var. Andesine(Na,Ca)[Al(Si,Al)Si2O8]
O Aurichalcite(Zn,Cu)5(CO3)2(OH)6
O AutuniteCa(UO2)2(PO4)2 · 10-12H2O
O AzuriteCu3(CO3)2(OH)2
O AlmandineFe32+Al2(SiO4)3
O BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
O BerylBe3Al2(Si6O18)
O CalciteCaCO3
O CassiteriteSnO2
O Cookeite(LiAl4◻)[AlSi3O10](OH)8
O DawsoniteNaAlCO3(OH)2
O Triphylite var. FerrisickleriteLi1-x(Fex3+Fe2+1-x)PO4
O FluorapatiteCa5(PO4)3F
O FourmarieritePb(UO2)4O3(OH)4 · 4H2O
O GoethiteFe3+O(OH)
O HemimorphiteZn4Si2O7(OH)2 · H2O
O HydrozinciteZn5(CO3)2(OH)6
O KaoliniteAl2(Si2O5)(OH)4
O KasolitePb(UO2)(SiO4) · H2O
O Spodumene var. KunziteLiAlSi2O6
O MagnetiteFe2+Fe23+O4
O MalachiteCu2(CO3)(OH)2
O Meta-autuniteCa(UO2)2(PO4)2 · 6H2O
O MicroclineK(AlSi3O8)
O MontebrasiteLiAl(PO4)(OH)
O Beryl var. MorganiteBe3Al2(Si6O18)
O MuscoviteKAl2(AlSi3O10)(OH)2
O Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
O Pollucite(Cs,Na)2(Al2Si4O12) · 2H2O
O PyrolusiteMn4+O2
O QuartzSiO2
O SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
O SideriteFeCO3
O SmithsoniteZnCO3
O Quartz var. Smoky QuartzSiO2
O SpodumeneLiAlSi2O6
O Tantalite(Mn,Fe)(Ta,Nb)2O6
O TriphyliteLiFe2+PO4
O TurquoiseCuAl6(PO4)4(OH)8 · 4H2O
O UraniniteUO2
O UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
O VandendriesscheitePbU7O22 · 12H2O
O Xenotime-(Y)Y(PO4)
O ZirconZr(SiO4)
FFluorine
F AmblygoniteLiAl(PO4)F
F BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
F FluorapatiteCa5(PO4)3F
NaSodium
Na AlbiteNa(AlSi3O8)
Na Albite var. Andesine(Na,Ca)[Al(Si,Al)Si2O8]
Na DawsoniteNaAlCO3(OH)2
Na Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Na Pollucite(Cs,Na)2(Al2Si4O12) · 2H2O
Na SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
MgMagnesium
Mg BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Mg Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
AlAluminium
Al AlbiteNa(AlSi3O8)
Al AmblygoniteLiAl(PO4)F
Al Albite var. Andesine(Na,Ca)[Al(Si,Al)Si2O8]
Al AlmandineFe32+Al2(SiO4)3
Al BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Al BerylBe3Al2(Si6O18)
Al Cookeite(LiAl4◻)[AlSi3O10](OH)8
Al DawsoniteNaAlCO3(OH)2
Al KaoliniteAl2(Si2O5)(OH)4
Al Spodumene var. KunziteLiAlSi2O6
Al MicroclineK(AlSi3O8)
Al MontebrasiteLiAl(PO4)(OH)
Al Beryl var. MorganiteBe3Al2(Si6O18)
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Al Pollucite(Cs,Na)2(Al2Si4O12) · 2H2O
Al SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Al SpodumeneLiAlSi2O6
Al TurquoiseCuAl6(PO4)4(OH)8 · 4H2O
SiSilicon
Si AlbiteNa(AlSi3O8)
Si Albite var. Andesine(Na,Ca)[Al(Si,Al)Si2O8]
Si AlmandineFe32+Al2(SiO4)3
Si BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Si BerylBe3Al2(Si6O18)
Si Cookeite(LiAl4◻)[AlSi3O10](OH)8
Si HemimorphiteZn4Si2O7(OH)2 · H2O
Si KaoliniteAl2(Si2O5)(OH)4
Si KasolitePb(UO2)(SiO4) · H2O
Si Spodumene var. KunziteLiAlSi2O6
Si MicroclineK(AlSi3O8)
Si Beryl var. MorganiteBe3Al2(Si6O18)
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Si Pollucite(Cs,Na)2(Al2Si4O12) · 2H2O
Si QuartzSiO2
Si SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Si Quartz var. Smoky QuartzSiO2
Si SpodumeneLiAlSi2O6
Si UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
Si ZirconZr(SiO4)
PPhosphorus
P AmblygoniteLiAl(PO4)F
P AutuniteCa(UO2)2(PO4)2 · 10-12H2O
P Triphylite var. FerrisickleriteLi1-x(Fex3+Fe2+1-x)PO4
P FluorapatiteCa5(PO4)3F
P Meta-autuniteCa(UO2)2(PO4)2 · 6H2O
P MontebrasiteLiAl(PO4)(OH)
P TriphyliteLiFe2+PO4
P TurquoiseCuAl6(PO4)4(OH)8 · 4H2O
P Xenotime-(Y)Y(PO4)
SSulfur
S BismuthiniteBi2S3
S BorniteCu5FeS4
S ChalcopyriteCuFeS2
S CovelliteCuS
S SphaleriteZnS
KPotassium
K BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
K MicroclineK(AlSi3O8)
K MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Ca Albite var. Andesine(Na,Ca)[Al(Si,Al)Si2O8]
Ca AutuniteCa(UO2)2(PO4)2 · 10-12H2O
Ca CalciteCaCO3
Ca FluorapatiteCa5(PO4)3F
Ca Meta-autuniteCa(UO2)2(PO4)2 · 6H2O
Ca Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Ca UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
TiTitanium
Ti BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
MnManganese
Mn PyrolusiteMn4+O2
Mn Tantalite(Mn,Fe)(Ta,Nb)2O6
FeIron
Fe AlmandineFe32+Al2(SiO4)3
Fe BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Fe BorniteCu5FeS4
Fe ChalcopyriteCuFeS2
Fe Triphylite var. FerrisickleriteLi1-x(Fex3+Fe2+1-x)PO4
Fe GoethiteFe3+O(OH)
Fe LöllingiteFeAs2
Fe MagnetiteFe2+Fe23+O4
Fe SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Fe SideriteFeCO3
Fe Tantalite(Mn,Fe)(Ta,Nb)2O6
Fe TriphyliteLiFe2+PO4
CuCopper
Cu Aurichalcite(Zn,Cu)5(CO3)2(OH)6
Cu AzuriteCu3(CO3)2(OH)2
Cu BorniteCu5FeS4
Cu ChalcopyriteCuFeS2
Cu CovelliteCuS
Cu MalachiteCu2(CO3)(OH)2
Cu TurquoiseCuAl6(PO4)4(OH)8 · 4H2O
ZnZinc
Zn Aurichalcite(Zn,Cu)5(CO3)2(OH)6
Zn HemimorphiteZn4Si2O7(OH)2 · H2O
Zn HydrozinciteZn5(CO3)2(OH)6
Zn SmithsoniteZnCO3
Zn SphaleriteZnS
AsArsenic
As LöllingiteFeAs2
YYttrium
Y Xenotime-(Y)Y(PO4)
ZrZirconium
Zr ZirconZr(SiO4)
NbNiobium
Nb Tantalite(Mn,Fe)(Ta,Nb)2O6
SnTin
Sn CassiteriteSnO2
CsCaesium
Cs Pollucite(Cs,Na)2(Al2Si4O12) · 2H2O
TaTantalum
Ta Microlite GroupA2-mTa2X6-wZ-n
Ta Tantalite(Mn,Fe)(Ta,Nb)2O6
PbLead
Pb FourmarieritePb(UO2)4O3(OH)4 · 4H2O
Pb KasolitePb(UO2)(SiO4) · H2O
Pb VandendriesscheitePbU7O22 · 12H2O
BiBismuth
Bi Native BismuthBi
Bi BismuthiniteBi2S3
UUranium
U AutuniteCa(UO2)2(PO4)2 · 10-12H2O
U FourmarieritePb(UO2)4O3(OH)4 · 4H2O
U KasolitePb(UO2)(SiO4) · H2O
U Meta-autuniteCa(UO2)2(PO4)2 · 6H2O
U UraniniteUO2
U UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
U VandendriesscheitePbU7O22 · 12H2O

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America PlateTectonic Plate
USA

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References

 
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