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Stillwater County, Montana, USAi
Regional Level Types
Stillwater CountyCounty
MontanaState
USACountry

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09060660017272046199115.jpg
"Trainload of chrome ore emerging from a mine tunnel", 1942

Benbow Mine, Stillwater County, Montana, USA
Type:
Largest Settlements:
PlacePopulation
Columbus2,042 (2017)
Absarokee1,150 (2011)
Park City983 (2011)
Reed Point193 (2011)
Mindat Locality ID:
19987
Long-form identifier:
mindat:1:2:19987:5
GUID (UUID V4):
0
Other Languages:
French:
comté de Stillwater, Montana, États-Unis
German:
Stillwater County, Montana, Vereinigte Staaten
Italian:
contea di Stillwater, Montana, Stati Uniti d'America
Russian:
Стиллуотер, Монтана, Соединённые Штаты Америки
Simplified Chinese:
斯蒂爾沃特縣, 蒙大拿州, 美国
Spanish:
Condado de Stillwater, Montana, Estados Unidos
Albanian:
Stillwater County, Montana, Shtetet e Bashkuara të Amerikës
Arabic:
مقاطعة ستيلواتر, مونتانا, الولايات المتحدة
Armenian:
Ստիլուոտեր շրջան, Մոնտանա, Ամերիկայի Միացյալ Նահանգներ
Basque:
Stillwater konderria , Montana
Bavarian:
Stillwater County, Montana, Vaoanigte Stootn
Bishnupriya Manipuri:
স্টিলৱাটার কাউন্টি, মন্টানা, তিলপারাষ্ট্র
Bulgarian:
Стилуотър, Монтана, Съединени американски щати
Cebuano:
Stillwater County, Montana
Dutch:
Stillwater County, Montana, Verenigde Staten
Farsi/Persian:
شهرستان استیلواتر، مونتانا, مونتانا, ایالات متحده آمریکا
Georgian:
სტილუოტერის ოლქი, მონტანა, ამერიკის შეერთებული შტატები
Hungarian:
Stillwater megye, Montana, Amerikai Egyesült Államok
Japanese:
スティルウォーター郡, モンタナ州, アメリカ合衆国
Low Saxon/Low German:
Stillwater County, Montana, USA
Min Dong Chinese:
Stillwater Gông, Montana
Minnan / Hokkien-Taiwanese:
Stillwater Kūn
Norwegian:
Stillwater County, Montana, USA
Polish:
Hrabstwo Stillwater, Montana, Stany Zjednoczone
Portuguese:
Condado de Stillwater, Montana, Estados Unidos
Romanian:
Comitatul Stillwater, Montana, Statele Unite ale Americii
Sardinian:
contea de Stillwater, Montana, Istados Unidos de Amèrica
Scottish Gaelic:
Stillwater County, Montana, Na Stàitean Aonaichte
Serbian:
Округ Стилвотер, Монтана, Сједињене Америчке Државе
Serbo-Croatian:
Stillwater County, Montana, Sjedinjene Američke Države
Swedish:
Stillwater County, Montana, USA
Traditional Chinese:
斯蒂爾沃特縣, 蒙大拿州, 美國
Turkish:
Stillwater, Montana, Amerika Birleşik Devletleri
Ukrainian:
Стіллвотер, Монтана, Сполучені Штати Америки
Urdu:
سٹیلواٹر کاؤنٹی، مونٹانا, مونٹانا, ریاستہائے متحدہ امریکا
Vietnamese:
Quận Stillwater, Montana, Chủng Quốc Hoa Kỳ
Waray:
Condado han Stillwater, Montana, Estados Unidos
Western Punjabi:
سٹلواٹر کاؤنٹی،مونٹانا, مونٹانا, امریکہ



A populated place.

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

82 valid minerals. 6 (TL) - type locality of valid minerals. 1 (FRL) - first recorded locality of unapproved mineral/variety/etc.

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
Almandine
Formula: Fe2+3Al2(SiO4)3
Anorthite
Formula: Ca(Al2Si2O8)
Anorthite var. Bytownite
Formula: (Ca,Na)[Al(Al,Si)Si2O8]
'Apatite'
Formula: Ca5(PO4)3A
Arsenopalladinite
Formula: Pd8(As,Sb)3
Arsenopyrite
Formula: FeAsS
Atokite
Formula: (Pd,Pt)3Sn
'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Bornite
Formula: Cu5FeS4
Braggite
Formula: PdPt3S4
Localities: Reported from at least 8 localities in this region.
Calcite
Formula: CaCO3
Carrollite
Formula: CuCo2S4
'Chabazite'
Chalcopyrite
Formula: CuFeS2
Localities: Reported from at least 22 localities in this region.
Chlorapatite
Formula: Ca5(PO4)3Cl
'Chlorite Group'
Chromite
Formula: Fe2+Cr3+2O4
Localities: Reported from at least 12 localities in this region.
'Chromite-Magnesiochromite Series'
References:
Pavel M. Kartashov - look https://www.mindat.org/mesg-821658.htmlIdentified by Pavel Kartashov: Inferred (explain how)
Cobaltite
Formula: CoAsS
Cooperite
Formula: PtS
Localities: Reported from at least 6 localities in this region.
Cordierite
Formula: Mg2Al4Si5O18
Covellite
Formula: CuS
Cubanite
Formula: CuFe2S3
Cuprite
Formula: Cu2O
Enstatite
Formula: Mg2Si2O6
Localities: Reported from at least 6 localities in this region.
Enstatite var. Bronzite
Formula: (Mg,Fe2+)2[SiO3]2
Localities: Reported from at least 6 localities in this region.
Epidote
Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
'Fayalite-Forsterite Series'
Localities: Reported from at least 10 localities in this region.
Forsterite
Formula: Mg2(SiO4)
Galena
Formula: PbS
Gersdorffite
Formula: NiAsS
Graphite
Formula: C
Grossular
Formula: Ca3Al2(SiO4)3
Heazlewoodite
Formula: Ni3S2
Hematite
Formula: Fe2O3
Hercynite
Formula: Fe2+Al2O4
Hercynite var. Picotite
Formula: (Fe,Mg)(Al,Cr)2O4
Hessite
Formula: Ag2Te
Hollingworthite
Formula: (Rh,Pt,Pd)AsS
'Hornblende Root Name Group'
Formula: ◻Ca2(C2+4C3+)(AlSi7O22)W2
Ilmenite
Formula: Fe2+TiO3
Localities: Reported from at least 6 localities in this region.
Isoferroplatinum
Formula: Pt3Fe
Keithconnite (TL)
Formula: Pd20Te7
Kojonenite (TL)
Formula: Pd7-xSnTe2 (0.3 ≤ x ≤ 0.8)
Type Locality:
Kotulskite
Formula: Pd(Te,Bi)2-x (x ≈ 0.4)
Description: with moncheite
Laurite
Formula: RuS2
Mackinawite
Formula: FeS
Magnetite
Formula: Fe2+Fe3+2O4
Localities: Reported from at least 15 localities in this region.
Marcasite
Formula: FeS2
Mertieite
Formula: Pd8Sb2.5As0.5
Michenerite
Formula: PdBiTe
Millerite
Formula: NiS
Localities: Reported from at least 6 localities in this region.
Moncheite
Formula: Pt(Te,Bi)2
Localities: Reported from at least 10 localities in this region.
Mooihoekite
Formula: Cu9Fe9S16
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Muscovite var. Sericite
Formula: KAl2(AlSi3O10)(OH)2
Native Copper
Formula: Cu
Native Gold
Formula: Au
Native Gold var. Electrum
Formula: (Au,Ag)
Native Gold var. Palladium-bearing Gold
Formula: (Au,Pd)
Native Palladium
Formula: (Pd,Pt)
Native Platinum ?
Formula: Pt
Native Rhodium (TL)
Formula: (Rh,Pt)
Type Locality:
Natrolite
Formula: Na2Al2Si3O10 · 2H2O
Nickeline
Formula: NiAs
Nontronite
Formula: Na0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
Palarstanide
Formula: Pd5(Sn,As)2
Palladoarsenide
Formula: Pd2As
Palladobismutharsenide (TL)
Formula: Pd2(As,Bi)
Type Locality:
Pentlandite
Formula: (NixFey)Σ9S8
Localities: Reported from at least 23 localities in this region.
Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
Pigeonite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
'Plagioclase'
Formula: (Na,Ca)[(Si,Al)AlSi2]O8
Localities: Reported from at least 9 localities in this region.
Plumbopalladinite
Formula: Pd3Pb2
Potarite
Formula: PdHg
Pyrite
Formula: FeS2
Localities: Reported from at least 12 localities in this region.
Pyrite var. Bravoite
Formula: (Fe,Ni)S2
Pyrrhotite
Formula: Fe1-xS
Localities: Reported from at least 23 localities in this region.
Rustenburgite
Formula: (Pt,Pd)3Sn
Rutile
Formula: TiO2
'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4
Sperrylite
Formula: PtAs2
Localities: Reported from at least 7 localities in this region.
Sperrylite var. Platarsite
Formula: Pt(As,S)2
Sphalerite
Formula: ZnS
Stannopalladinite
Formula: (Pd,Cu)3Sn
Stibnite
Formula: Sb2S3
'Stilbite Subgroup'
Formula: M6-7[Al8-9Si27-28O72] · nH2O
Stillwaterite (TL)
Formula: Pd8As3
Talc
Formula: Mg3Si4O10(OH)2
Telargpalite
Formula: (Pd,Ag)3(Te,Bi)
Telluropalladinite (TL)
Formula: Pd9Te4
Temagamite
Formula: Pd3HgTe3
'Tetrahedrite Subgroup'
Formula: Cu6(Cu4C2+2)Sb4S12S
Titanite
Formula: CaTiO(SiO4)
Tremolite
Formula: ◻Ca2Mg5(Si8O22)(OH)2
Tulameenite
Formula: Pt2CuFe
'UM1986-51-S:Re' (FRL)
Formula: Re2S3
Type Locality:
Violarite
Formula: Fe2+Ni3+2S4
Vysotskite
Formula: PdS
Localities: Reported from at least 9 localities in this region.
Zircon
Formula: Zr(SiO4)
Zvyagintsevite
Formula: Pd3Pb

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Native Copper1.AA.05Cu
Native Gold
var. Electrum
1.AA.05(Au,Ag)
1.AA.05Au
var. Palladium-bearing Gold1.AA.05(Au,Pd)
Potarite1.AD.25PdHg
Native Palladium1.AF.10(Pd,Pt)
Native Platinum ?1.AF.10Pt
Native Rhodium (TL)1.AF.10(Rh,Pt)
Atokite1.AG.10(Pd,Pt)3Sn
Rustenburgite1.AG.10(Pt,Pd)3Sn
Zvyagintsevite1.AG.10Pd3Pb
Plumbopalladinite1.AG.25Pd3Pb2
Stannopalladinite1.AG.25(Pd,Cu)3Sn
Isoferroplatinum1.AG.35Pt3Fe
Tulameenite1.AG.40Pt2CuFe
Graphite1.CB.05aC
Group 2 - Sulphides and Sulfosalts
Stillwaterite (TL)2.AC.10aPd8As3
Mertieite2.AC.10bPd8Sb2.5As0.5
Arsenopalladinite2.AC.10cPd8(As,Sb)3
Palarstanide2.AC.20bPd5(Sn,As)2
Palladoarsenide2.AC.25aPd2As
Palladobismutharsenide (TL)2.AC.25fPd2(As,Bi)
Bornite2.BA.15Cu5FeS4
Hessite2.BA.60Ag2Te
Heazlewoodite2.BB.05Ni3S2
Pentlandite2.BB.15(NixFey)Σ9S8
Keithconnite (TL)2.BC.20Pd20Te7
Telluropalladinite (TL)2.BC.30Pd9Te4
Kojonenite (TL)2.BC.35Pd7-xSnTe2 (0.3 ≤ x ≤ 0.8)
Telargpalite2.BC.45(Pd,Ag)3(Te,Bi)
Temagamite2.BC.50Pd3HgTe3
Covellite2.CA.05aCuS
Sphalerite2.CB.05aZnS
Chalcopyrite2.CB.10aCuFeS2
Mooihoekite2.CB.10bCu9Fe9S16
Cubanite2.CB.55aCuFe2S3
Kotulskite2.CC.05Pd(Te,Bi)2-x (x ≈ 0.4)
Nickeline2.CC.05NiAs
Pyrrhotite2.CC.10Fe1-xS
Millerite2.CC.20NiS
Mackinawite2.CC.25FeS
Braggite2.CC.35aPdPt3S4
Vysotskite2.CC.35aPdS
Cooperite2.CC.35bPtS
Galena2.CD.10PbS
Carrollite2.DA.05CuCo2S4
Violarite2.DA.05Fe2+Ni3+2S4
Stibnite2.DB.05Sb2S3
Moncheite2.EA.20Pt(Te,Bi)2
Pyrite
var. Bravoite
2.EB.05a(Fe,Ni)S2
Laurite2.EB.05aRuS2
Pyrite2.EB.05aFeS2
Sperrylite2.EB.05aPtAs2
Marcasite2.EB.10aFeS2
Arsenopyrite2.EB.20FeAsS
Cobaltite2.EB.25CoAsS
Gersdorffite2.EB.25NiAsS
Hollingworthite2.EB.25(Rh,Pt,Pd)AsS
Michenerite2.EB.25PdBiTe
Sperrylite
var. Platarsite
2.EB.25Pt(As,S)2
'Tetrahedrite Subgroup'2.GB.05Cu6(Cu4C2+2)Sb4S12S
Group 4 - Oxides and Hydroxides
Cuprite4.AA.10Cu2O
Chromite4.BB.05Fe2+Cr3+2O4
Hercynite4.BB.05Fe2+Al2O4
Magnetite4.BB.05Fe2+Fe3+2O4
Hercynite
var. Picotite
4.BB.05(Fe,Mg)(Al,Cr)2O4
Hematite4.CB.05Fe2O3
Ilmenite4.CB.05Fe2+TiO3
Rutile4.DB.05TiO2
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Group 8 - Phosphates, Arsenates and Vanadates
Chlorapatite8.BN.05Ca5(PO4)3Cl
Group 9 - Silicates
Forsterite9.AC.05Mg2(SiO4)
Almandine9.AD.25Fe2+3Al2(SiO4)3
Grossular9.AD.25Ca3Al2(SiO4)3
Zircon9.AD.30Zr(SiO4)
Titanite9.AG.15CaTiO(SiO4)
Epidote9.BG.05a(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Cordierite9.CJ.10Mg2Al4Si5O18
Enstatite9.DA.05Mg2Si2O6
var. Bronzite9.DA.05(Mg,Fe2+)2[SiO3]2
Pigeonite9.DA.10(CaxMgyFez)(Mgy1Fez1)Si2O6
Actinolite9.DE.10◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Tremolite9.DE.10◻Ca2Mg5(Si8O22)(OH)2
Talc9.EC.05Mg3Si4O10(OH)2
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
var. Sericite9.EC.15KAl2(AlSi3O10)(OH)2
Phlogopite9.EC.20KMg3(AlSi3O10)(OH)2
Nontronite9.EC.40Na0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
Anorthite9.FA.35Ca(Al2Si2O8)
var. Bytownite9.FA.35(Ca,Na)[Al(Al,Si)Si2O8]
Natrolite9.GA.05Na2Al2Si3O10 · 2H2O
Unclassified
'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
'Chabazite'-
'Chlorite Group'-
'Stilbite Subgroup'-M6-7[Al8-9Si27-28O72] · nH2O
'Fayalite-Forsterite Series'-
'Chromite-Magnesiochromite Series'-
'Hornblende Root Name Group'-◻Ca2(C2+4C3+)(AlSi7O22)W2
'Plagioclase'-(Na,Ca)[(Si,Al)AlSi2]O8
'Serpentine Subgroup'-D3[Si2O5](OH)4
'Apatite'-Ca5(PO4)3A
'UM1986-51-S:Re' (TL)-Re2S3

List of minerals for each chemical element

HHydrogen
H Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
H BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
H Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
H MuscoviteKAl2(AlSi3O10)(OH)2
H NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
H NatroliteNa2Al2Si3O10 · 2H2O
H PhlogopiteKMg3(AlSi3O10)(OH)2
H Stilbite SubgroupM6-7[Al8-9Si27-28O72] · nH2O
H TalcMg3Si4O10(OH)2
H Tremolite◻Ca2Mg5(Si8O22)(OH)2
H Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
H Serpentine SubgroupD3[Si2O5](OH)4
CCarbon
C CalciteCaCO3
C GraphiteC
OOxygen
O Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
O AnorthiteCa(Al2Si2O8)
O AlmandineFe32+Al2(SiO4)3
O BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
O Anorthite var. Bytownite(Ca,Na)[Al(Al,Si)Si2O8]
O CalciteCaCO3
O ChlorapatiteCa5(PO4)3Cl
O ChromiteFe2+Cr23+O4
O CordieriteMg2Al4Si5O18
O CupriteCu2O
O EnstatiteMg2Si2O6
O Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
O ForsteriteMg2(SiO4)
O GrossularCa3Al2(SiO4)3
O HematiteFe2O3
O HercyniteFe2+Al2O4
O IlmeniteFe2+TiO3
O MagnetiteFe2+Fe23+O4
O MuscoviteKAl2(AlSi3O10)(OH)2
O NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
O NatroliteNa2Al2Si3O10 · 2H2O
O PhlogopiteKMg3(AlSi3O10)(OH)2
O Pigeonite(CaxMgyFez)(Mgy1Fez1)Si2O6
O RutileTiO2
O Stilbite SubgroupM6-7[Al8-9Si27-28O72] · nH2O
O TalcMg3Si4O10(OH)2
O TitaniteCaTiO(SiO4)
O Tremolite◻Ca2Mg5(Si8O22)(OH)2
O ZirconZr(SiO4)
O Enstatite var. Bronzite(Mg,Fe2+)2[SiO3]2
O Fayalite-Forsterite Series
O Chromite-Magnesiochromite Series
O Hornblende Root Name Group◻Ca2(C42+C3+)(AlSi7O22)W2
O Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
O Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
O Hercynite var. Picotite(Fe,Mg)(Al,Cr)2O4
O Serpentine SubgroupD3[Si2O5](OH)4
O ApatiteCa5(PO4)3A
FFluorine
F BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
NaSodium
Na Anorthite var. Bytownite(Ca,Na)[Al(Al,Si)Si2O8]
Na NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
Na NatroliteNa2Al2Si3O10 · 2H2O
Na Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
MgMagnesium
Mg Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Mg BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Mg CordieriteMg2Al4Si5O18
Mg EnstatiteMg2Si2O6
Mg ForsteriteMg2(SiO4)
Mg PhlogopiteKMg3(AlSi3O10)(OH)2
Mg Pigeonite(CaxMgyFez)(Mgy1Fez1)Si2O6
Mg TalcMg3Si4O10(OH)2
Mg Tremolite◻Ca2Mg5(Si8O22)(OH)2
Mg Enstatite var. Bronzite(Mg,Fe2+)2[SiO3]2
Mg Fayalite-Forsterite Series
Mg Chromite-Magnesiochromite Series
Mg Hercynite var. Picotite(Fe,Mg)(Al,Cr)2O4
AlAluminium
Al AnorthiteCa(Al2Si2O8)
Al AlmandineFe32+Al2(SiO4)3
Al BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Al Anorthite var. Bytownite(Ca,Na)[Al(Al,Si)Si2O8]
Al CordieriteMg2Al4Si5O18
Al Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Al GrossularCa3Al2(SiO4)3
Al HercyniteFe2+Al2O4
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
Al NatroliteNa2Al2Si3O10 · 2H2O
Al PhlogopiteKMg3(AlSi3O10)(OH)2
Al Stilbite SubgroupM6-7[Al8-9Si27-28O72] · nH2O
Al Hornblende Root Name Group◻Ca2(C42+C3+)(AlSi7O22)W2
Al Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Al Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Al Hercynite var. Picotite(Fe,Mg)(Al,Cr)2O4
SiSilicon
Si Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Si AnorthiteCa(Al2Si2O8)
Si AlmandineFe32+Al2(SiO4)3
Si BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Si Anorthite var. Bytownite(Ca,Na)[Al(Al,Si)Si2O8]
Si CordieriteMg2Al4Si5O18
Si EnstatiteMg2Si2O6
Si Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Si ForsteriteMg2(SiO4)
Si GrossularCa3Al2(SiO4)3
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
Si NatroliteNa2Al2Si3O10 · 2H2O
Si PhlogopiteKMg3(AlSi3O10)(OH)2
Si Pigeonite(CaxMgyFez)(Mgy1Fez1)Si2O6
Si Stilbite SubgroupM6-7[Al8-9Si27-28O72] · nH2O
Si TalcMg3Si4O10(OH)2
Si TitaniteCaTiO(SiO4)
Si Tremolite◻Ca2Mg5(Si8O22)(OH)2
Si ZirconZr(SiO4)
Si Enstatite var. Bronzite(Mg,Fe2+)2[SiO3]2
Si Fayalite-Forsterite Series
Si Hornblende Root Name Group◻Ca2(C42+C3+)(AlSi7O22)W2
Si Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Si Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Si Serpentine SubgroupD3[Si2O5](OH)4
PPhosphorus
P ChlorapatiteCa5(PO4)3Cl
P ApatiteCa5(PO4)3A
SSulfur
S ArsenopyriteFeAsS
S BorniteCu5FeS4
S BraggitePdPt3S4
S Pyrite var. Bravoite(Fe,Ni)S2
S CarrolliteCuCo2S4
S ChalcopyriteCuFeS2
S CobaltiteCoAsS
S CooperitePtS
S CovelliteCuS
S CubaniteCuFe2S3
S GalenaPbS
S GersdorffiteNiAsS
S HeazlewooditeNi3S2
S Hollingworthite(Rh,Pt,Pd)AsS
S LauriteRuS2
S MackinawiteFeS
S MarcasiteFeS2
S MilleriteNiS
S MooihoekiteCu9Fe9S16
S Pentlandite(NixFey)Σ9S8
S Sperrylite var. PlatarsitePt(As,S)2
S PyriteFeS2
S PyrrhotiteFe1-xS
S SphaleriteZnS
S StibniteSb2S3
S Tetrahedrite SubgroupCu6(Cu4C22+)Sb4S12S
S ViolariteFe2+Ni23+S4
S VysotskitePdS
S UM1986-51-S:ReRe2S3
ClChlorine
Cl ChlorapatiteCa5(PO4)3Cl
KPotassium
K BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
K MuscoviteKAl2(AlSi3O10)(OH)2
K PhlogopiteKMg3(AlSi3O10)(OH)2
K Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
CaCalcium
Ca Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Ca AnorthiteCa(Al2Si2O8)
Ca Anorthite var. Bytownite(Ca,Na)[Al(Al,Si)Si2O8]
Ca CalciteCaCO3
Ca ChlorapatiteCa5(PO4)3Cl
Ca Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Ca GrossularCa3Al2(SiO4)3
Ca Pigeonite(CaxMgyFez)(Mgy1Fez1)Si2O6
Ca TitaniteCaTiO(SiO4)
Ca Tremolite◻Ca2Mg5(Si8O22)(OH)2
Ca Hornblende Root Name Group◻Ca2(C42+C3+)(AlSi7O22)W2
Ca Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Ca ApatiteCa5(PO4)3A
TiTitanium
Ti BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Ti IlmeniteFe2+TiO3
Ti RutileTiO2
Ti TitaniteCaTiO(SiO4)
CrChromium
Cr ChromiteFe2+Cr23+O4
Cr Chromite-Magnesiochromite Series
Cr Hercynite var. Picotite(Fe,Mg)(Al,Cr)2O4
FeIron
Fe Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Fe ArsenopyriteFeAsS
Fe AlmandineFe32+Al2(SiO4)3
Fe BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Fe BorniteCu5FeS4
Fe Pyrite var. Bravoite(Fe,Ni)S2
Fe ChalcopyriteCuFeS2
Fe ChromiteFe2+Cr23+O4
Fe CubaniteCuFe2S3
Fe Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Fe HematiteFe2O3
Fe HercyniteFe2+Al2O4
Fe IlmeniteFe2+TiO3
Fe IsoferroplatinumPt3Fe
Fe MackinawiteFeS
Fe MagnetiteFe2+Fe23+O4
Fe MarcasiteFeS2
Fe MooihoekiteCu9Fe9S16
Fe NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
Fe Pentlandite(NixFey)Σ9S8
Fe Pigeonite(CaxMgyFez)(Mgy1Fez1)Si2O6
Fe PyriteFeS2
Fe PyrrhotiteFe1-xS
Fe TulameenitePt2CuFe
Fe ViolariteFe2+Ni23+S4
Fe Enstatite var. Bronzite(Mg,Fe2+)2[SiO3]2
Fe Fayalite-Forsterite Series
Fe Chromite-Magnesiochromite Series
Fe Hercynite var. Picotite(Fe,Mg)(Al,Cr)2O4
CoCobalt
Co CarrolliteCuCo2S4
Co CobaltiteCoAsS
NiNickel
Ni Pyrite var. Bravoite(Fe,Ni)S2
Ni GersdorffiteNiAsS
Ni HeazlewooditeNi3S2
Ni MilleriteNiS
Ni NickelineNiAs
Ni Pentlandite(NixFey)Σ9S8
Ni ViolariteFe2+Ni23+S4
CuCopper
Cu BorniteCu5FeS4
Cu CarrolliteCuCo2S4
Cu ChalcopyriteCuFeS2
Cu CovelliteCuS
Cu CubaniteCuFe2S3
Cu CupriteCu2O
Cu Native CopperCu
Cu MooihoekiteCu9Fe9S16
Cu Stannopalladinite(Pd,Cu)3Sn
Cu Tetrahedrite SubgroupCu6(Cu4C22+)Sb4S12S
Cu TulameenitePt2CuFe
ZnZinc
Zn SphaleriteZnS
AsArsenic
As ArsenopalladinitePd8(As,Sb)3
As ArsenopyriteFeAsS
As CobaltiteCoAsS
As GersdorffiteNiAsS
As Hollingworthite(Rh,Pt,Pd)AsS
As MertieitePd8Sb2.5As0.5
As NickelineNiAs
As PalarstanidePd5(Sn,As)2
As PalladoarsenidePd2As
As PalladobismutharsenidePd2(As,Bi)
As Sperrylite var. PlatarsitePt(As,S)2
As SperrylitePtAs2
As StillwateritePd8As3
ZrZirconium
Zr ZirconZr(SiO4)
RuRuthenium
Ru LauriteRuS2
RhRhodium
Rh Hollingworthite(Rh,Pt,Pd)AsS
Rh Native Rhodium(Rh,Pt)
PdPalladium
Pd ArsenopalladinitePd8(As,Sb)3
Pd Atokite(Pd,Pt)3Sn
Pd BraggitePdPt3S4
Pd Hollingworthite(Rh,Pt,Pd)AsS
Pd KeithconnitePd20Te7
Pd KotulskitePd(Te,Bi)2-x (x ≈ 0.4)
Pd MertieitePd8Sb2.5As0.5
Pd MicheneritePdBiTe
Pd PalarstanidePd5(Sn,As)2
Pd Native Palladium(Pd,Pt)
Pd PalladoarsenidePd2As
Pd PalladobismutharsenidePd2(As,Bi)
Pd PlumbopalladinitePd3Pb2
Pd PotaritePdHg
Pd Rustenburgite(Pt,Pd)3Sn
Pd Stannopalladinite(Pd,Cu)3Sn
Pd StillwateritePd8As3
Pd TelluropalladinitePd9Te4
Pd Telargpalite(Pd,Ag)3(Te,Bi)
Pd TemagamitePd3HgTe3
Pd VysotskitePdS
Pd ZvyagintsevitePd3Pb
Pd Native Gold var. Palladium-bearing Gold(Au,Pd)
Pd KojonenitePd7-xSnTe2 (0.3 ≤ x ≤ 0.8)
AgSilver
Ag Native Gold var. Electrum(Au,Ag)
Ag HessiteAg2Te
Ag Telargpalite(Pd,Ag)3(Te,Bi)
SnTin
Sn Atokite(Pd,Pt)3Sn
Sn PalarstanidePd5(Sn,As)2
Sn Rustenburgite(Pt,Pd)3Sn
Sn Stannopalladinite(Pd,Cu)3Sn
Sn KojonenitePd7-xSnTe2 (0.3 ≤ x ≤ 0.8)
SbAntimony
Sb ArsenopalladinitePd8(As,Sb)3
Sb MertieitePd8Sb2.5As0.5
Sb StibniteSb2S3
Sb Tetrahedrite SubgroupCu6(Cu4C22+)Sb4S12S
TeTellurium
Te HessiteAg2Te
Te KeithconnitePd20Te7
Te KotulskitePd(Te,Bi)2-x (x ≈ 0.4)
Te MicheneritePdBiTe
Te MoncheitePt(Te,Bi)2
Te TelluropalladinitePd9Te4
Te Telargpalite(Pd,Ag)3(Te,Bi)
Te TemagamitePd3HgTe3
Te KojonenitePd7-xSnTe2 (0.3 ≤ x ≤ 0.8)
ReRhenium
Re UM1986-51-S:ReRe2S3
PtPlatinum
Pt Atokite(Pd,Pt)3Sn
Pt BraggitePdPt3S4
Pt CooperitePtS
Pt Hollingworthite(Rh,Pt,Pd)AsS
Pt IsoferroplatinumPt3Fe
Pt MoncheitePt(Te,Bi)2
Pt Native Palladium(Pd,Pt)
Pt Sperrylite var. PlatarsitePt(As,S)2
Pt Native PlatinumPt
Pt Native Rhodium(Rh,Pt)
Pt Rustenburgite(Pt,Pd)3Sn
Pt SperrylitePtAs2
Pt TulameenitePt2CuFe
AuGold
Au Native Gold var. Electrum(Au,Ag)
Au Native GoldAu
Au Native Gold var. Palladium-bearing Gold(Au,Pd)
HgMercury
Hg PotaritePdHg
Hg TemagamitePd3HgTe3
PbLead
Pb GalenaPbS
Pb PlumbopalladinitePd3Pb2
Pb ZvyagintsevitePd3Pb
BiBismuth
Bi KotulskitePd(Te,Bi)2-x (x ≈ 0.4)
Bi MicheneritePdBiTe
Bi MoncheitePt(Te,Bi)2
Bi PalladobismutharsenidePd2(As,Bi)
Bi Telargpalite(Pd,Ag)3(Te,Bi)

Fossils

There are 65 fossil localities from the PaleoBioDB database within this region.

These data are provided on an experimental basis and are taken from external databases. Mindat.org has no control currently over the accuracy of these data.

Occurrences65
Youngest Fossil Listed66.0 Ma (Late/Upper Cretaceous)
Oldest Fossil Listed113 Ma (Early/Lower Cretaceous)
Stratigraphic Units
UnitNo. OccurrencesAge
Montana - Bearpaw Shale1272.1 - 66 Ma (Late/Upper Cretaceous)
Montana - Judith River5183.5 - 70.6 Ma (Late/Upper Cretaceous)
Fossils from RegionClick here to show the list.
Accepted NameHierarchy Age
Ammonoidea
order
Animalia : Mollusca : Cephalopoda : Ammonoidea83.5 - 70.6 Ma
Late/Upper Cretaceous
Scaphites
genus
Animalia : Mollusca : Cephalopoda : Ammonoidea : Scaphitidae : Scaphites83.5 - 70.6 Ma
Late/Upper Cretaceous
Bivalvia
class
Animalia : Mollusca : Bivalvia83.5 - 70.6 Ma
Late/Upper Cretaceous
Hybodus
genus
Animalia : Chordata : Chondrichthyes : Hybodontiformes : Hybodontidae : Hybodus83.5 - 70.6 Ma
Late/Upper Cretaceous
Odontaspis
genus
Animalia : Chordata : Elasmobranchii : Lamniformes : Odontaspididae : Odontaspis83.5 - 70.6 Ma
Late/Upper Cretaceous
Ischyrhiza
genus
Animalia : Chordata : Chondrichthyes : Sclerorhynchiformes : Sclerorhynchidae : Ischyrhiza83.5 - 70.6 Ma
Late/Upper Cretaceous
Protoplatyrhina
genus
Animalia : Chordata : Chondrichthyes : Rajiformes : Protoplatyrhina83.5 - 70.6 Ma
Late/Upper Cretaceous
Myledaphus
genus
Animalia : Chordata : Elasmobranchii : Rhinopristiformes : Rhinobatidae : Myledaphus83.5 - 70.6 Ma
Late/Upper Cretaceous
Acipenser
genus
Animalia : Chordata : Actinopteri : Acipenseriformes : Acipenseridae : Acipenser83.5 - 70.6 Ma
Late/Upper Cretaceous
Lepisosteus
genus
Animalia : Chordata : Actinopterygii : Lepisosteiformes : Lepisosteidae : Lepisosteus83.5 - 70.6 Ma
Late/Upper Cretaceous
Belonostomus
genus
Animalia : Chordata : Actinopteri : Aspidorhynchidae : Belonostomus83.5 - 70.6 Ma
Late/Upper Cretaceous
Paralbula
genus
Animalia : Chordata : Actinopteri : Elopiformes : Phyllodontidae : Paralbula83.5 - 70.6 Ma
Late/Upper Cretaceous
Crocodylia
unranked clade
Animalia : Chordata : Reptilia : Crocodylia83.5 - 70.6 Ma
Late/Upper Cretaceous
Opisthotriton
genus
Animalia : Chordata : Osteichthyes : Proteida : Batrachosauroididae : Opisthotriton83.5 - 70.6 Ma
Late/Upper Cretaceous
Scapherpeton
genus
Animalia : Chordata : Osteichthyes : Caudata : Scapherpetontidae : Scapherpeton83.5 - 70.6 Ma
Late/Upper Cretaceous
Boremys
genus
Animalia : Chordata : Reptilia : Testudines : Baenidae : Boremys83.5 - 70.6 Ma
Late/Upper Cretaceous
Champsosaurus
genus
Animalia : Chordata : Reptilia : Champsosauridae : Champsosaurus83.5 - 70.6 Ma
Late/Upper Cretaceous
Mosasauridae
family
Animalia : Chordata : Reptilia : Squamata : Mosasauridae83.5 - 70.6 Ma
Late/Upper Cretaceous
Theropoda
unranked clade
Animalia : Chordata : Saurischia : Theropoda83.5 - 70.6 Ma
Late/Upper Cretaceous
Hadrosauridae
family
Animalia : Chordata : Reptilia : Dinosauria : Hadrosauridae83.5 - 70.6 Ma
Late/Upper Cretaceous
Panoplosaurus
genus
Animalia : Chordata : Reptilia : Dinosauria : Nodosauridae : Panoplosaurus83.5 - 70.6 Ma
Late/Upper Cretaceous
Ankylosauridae
family
Animalia : Chordata : Reptilia : Dinosauria : Ankylosauridae83.5 - 70.6 Ma
Late/Upper Cretaceous
Ceratopsia
unranked clade
Animalia : Chordata : Ornithischia : Ceratopsia83.6 - 66 Ma
Late/Upper Cretaceous
Centrosaurus
genus
Animalia : Chordata : Reptilia : Dinosauria : Ceratopsidae : Centrosaurus83.5 - 70.6 Ma
Late/Upper Cretaceous
Cimexomys
genus
Animalia : Chordata : Mammalia : Taeniolabidae : Cimexomys83.5 - 70.6 Ma
Late/Upper Cretaceous
Mesodma
genus
Animalia : Chordata : Mammalia : Ptilodontidae : Mesodma83.5 - 70.6 Ma
Late/Upper Cretaceous
Meniscoessus
genus
Animalia : Chordata : Mammalia : Taeniolabididae : Meniscoessus83.5 - 70.6 Ma
Late/Upper Cretaceous
Cimolomys
genus
Animalia : Chordata : Mammalia : Cimolomyidae : Cimolomys83.5 - 70.6 Ma
Late/Upper Cretaceous
Alphadon
genus
Animalia : Chordata : Mammalia : Didelphimorphia : Didelphidae : Alphadon83.5 - 70.6 Ma
Late/Upper Cretaceous
Gypsonictops
genus
Animalia : Chordata : Mammalia : Pilosa : Gypsonictopidae : Gypsonictops83.5 - 70.6 Ma
Late/Upper Cretaceous
Gryposaurus
genus
Animalia : Chordata : Reptilia : Dinosauria : Hadrosauridae : Gryposaurus83.5 - 70.6 Ma
Late/Upper Cretaceous
Lambeosaurinae
subfamily
Animalia : Chordata : Ornithischia : Hadrosauridae : Lambeosaurinae83.5 - 70.6 Ma
Late/Upper Cretaceous
Dromaeosaurus albertensis
species
Animalia : Chordata : Reptilia : Dinosauria : Dromaeosauridae : Dromaeosaurus : Dromaeosaurus albertensis83.5 - 70.6 Ma
Late/Upper Cretaceous
Saurornitholestes langstoni
species
Animalia : Chordata : Saurischia : Avetheropoda : Dromaeosauridae : Saurornitholestes : Saurornitholestes langstoni83.5 - 70.6 Ma
Late/Upper Cretaceous
Troodon formosus
species
Animalia : Chordata : Saurischia : Avetheropoda : Troodontidae : Troodon : Troodon formosus83.5 - 70.6 Ma
Late/Upper Cretaceous
Sequoia
genus
Plantae : Tracheophyta : Pinopsida : Pinales : Cupressaceae : Sequoia83.5 - 70.6 Ma
Late/Upper Cretaceous
Trionychinae
unranked clade
Animalia : Chordata : Reptilia : Testudines : Trionychidae : Trionychinae83.5 - 70.6 Ma
Late/Upper Cretaceous
Anguioidea
superfamily
Animalia : Chordata : Reptilia : Squamata : Anguioidea83.5 - 70.6 Ma
Late/Upper Cretaceous
Richardoestesia gilmorei
species
Animalia : Chordata : Reptilia : Dinosauria : Dromaeosauridae : Richardoestesia : Richardoestesia gilmorei83.5 - 70.6 Ma
Late/Upper Cretaceous
Teleostei
unranked clade
Animalia : Chordata : Actinopteri : Teleostei83.5 - 70.6 Ma
Late/Upper Cretaceous
Eucrossorhinus
genus
Animalia : Chordata : Chondrichthyes : Orectolobiformes : Orectolobidae : Eucrossorhinus83.5 - 70.6 Ma
Late/Upper Cretaceous
Cyclurus
genus
Animalia : Chordata : Actinopteri : Amiiformes : Amiidae : Cyclurus83.5 - 70.6 Ma
Late/Upper Cretaceous
Squalicorax pristodontus
species
Animalia : Chordata : Chondrichthyes : Lamniformes : Anacoracidae : Squalicorax : Squalicorax pristodontus83.5 - 70.6 Ma
Late/Upper Cretaceous
Baculites compressus
species
Animalia : Mollusca : Cephalopoda : Ammonoidea : Baculitidae : Baculites : Baculites compressus83.5 - 70.6 Ma
Late/Upper Cretaceous
Rhaeboceras halli
species
Animalia : Mollusca : Cephalopoda : Ammonitida : Scaphitidae : Rhaeboceras : Rhaeboceras halli83.5 - 70.6 Ma
Late/Upper Cretaceous
Metatheria
subclass
Animalia : Chordata : Mammalia : Metatheria83.5 - 70.6 Ma
Late/Upper Cretaceous
Labrodioctes montanensis
species
Animalia : Chordata : Reptilia : Squamata : Necrosauridae : Labrodioctes : Labrodioctes montanensis83.5 - 70.6 Ma
Late/Upper Cretaceous
Pediomyidae
unranked clade
Animalia : Chordata : Mammalia : Pediomyidae83.5 - 70.6 Ma
Late/Upper Cretaceous
Axestemys splendidus
species
Animalia : Chordata : Reptilia : Testudines : Trionychidae : Axestemys : Axestemys splendidus83.5 - 70.6 Ma
Late/Upper Cretaceous
Carinalestes murensis
species
Animalia : Chordata : Mammalia : Carinalestes : Carinalestes murensis113 - 100.5 Ma
Early/Lower Cretaceous
Fossil LocalitiesClick to show 6 fossil localities

Other Databases

Wikipedia:https://en.wikipedia.org/wiki/Stillwater_County,_Montana
Wikidata ID:Q490750
GeoNames ID:5680538

Localities in this Region

Other Regions, Features and Areas that Intersect

North America Plate
USA

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