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Minneapolis adit, J-M Reef (Howland Reef), Stillwater Complex, Nye, Stillwater Co., Montana, USAi
Regional Level Types
Minneapolis aditAdit
J-M Reef (Howland Reef)Reef
Stillwater ComplexComplex
Nye- not defined -
Stillwater Co.County
MontanaState
USACountry

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Key
Latitude & Longitude (WGS84):
45° North , 109° West (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~6km
Locality type:
Köppen climate type:


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

Regions containing this locality

North America PlateTectonic Plate
Rocky Mountains, North AmericaMountain Range

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


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

Detailed Mineral List:

'Albite-Anorthite Series'
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Arsenopalladinite
Formula: Pd8(As,Sb)3
Reference: www.cannonmicroprobe.com/Mineral_Specimens.htm
Atokite
Formula: (Pd,Pt)3Sn
Reference: www.cannonmicroprobe.com/Mineral_Specimens.htm
Braggite
Formula: (Pt,Pd,Ni)S
Habit: Crystals to 8mm
Reference: Canadian Mineralogist Vol. 23, pp.149-162(1985)
Chalcopyrite
Formula: CuFeS2
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.; Econ Geol (1986) 81:1187-1195; Canadian Mineralogist Vol. 23, pp.149-162(1985)
'Chlorite Group'
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Cooperite
Formula: PtS
Reference: Canadian Mineralogist Vol. 23, pp."149-162(1 985)
Cubanite
Formula: CuFe2S3
Reference: Canadian Mineralogist Vol. 23, pp.149-162(1985)
Enstatite
Formula: MgSiO3
Reference: British Museum specimen (BM 1981,134).
Enstatite var: Bronzite
Formula: (Mg,Fe2+)2[SiO3]2
Reference: British Museum specimen (BM 1981,134).
'Fayalite-Forsterite Series'
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.; Econ Geol (1986) 81:1187-1195
Gold
Formula: Au
Reference: Canadian Mineralogist Vol. 23, pp.149-162(1985); Bart Cannon (Cannon Microprobe, Seattle) analysis # MA121,695-2.
Gold var: Palladian Gold
Formula: (Au,Pd)
Reference: www.cannonmicroprobe.com/Mineral_Specimens.htm; Bart Cannon (Cannon Microprobe, Seattle) analysis # MA121,695-2.
'Hornblende'
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Isoferroplatinum
Formula: Pt3Fe
Reference: Canadian Mineralogist Vol. 23, pp.149-162(1985); Bart Cannon (Cannon Microprobe, Seattle) analysis # MA121,695-2.
Keithconnite
Formula: Pd20Te7
Reference: www.cannonmicroprobe.com/Mineral_Specimens.htm; Canadian Mineralogist Vol. 23, pp.149-162(1985)
Kojonenite (TL)
Formula: Pd7-xSnTe2 (0.3 ≤ x ≤ 0.8)
Type Locality:
Reference: Stanley, C.J. and Vymazalová, A. (2014) Kojonenite, IMA 2013-132. CNMNC Newsletter No. 20, June 2014, page 552; Mineralogical Magazine, 78, 549-558
Kotulskite
Formula: Pd(Te,Bi)
Reference: Canadian Mineralogist Vol. 23, pp.149-162(1985)
Laurite
Formula: RuS2
Description: Associated with unnamed (Ir,Ru)S.
Reference: Bart Cannon (Cannon Microprobe) analysis # MR 5-3.; Bart Cannon (Cannon Microprobe, Seattle) analysis # MA121,695-2.
Mackinawite
Formula: (Fe,Ni)9S8
Reference: Canadian Mineralogist Vol. 23, pp.149-162(1985)
Magnetite
Formula: Fe2+Fe3+2O4
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Moncheite
Formula: (Pt,Pd)(Te,Bi)2
Reference: www.cannonmicroprobe.com/Mineral_Specimens.htm; Canadian Mineralogist Vol. 23, pp.149-162(1985)
Palarstanide
Formula: Pd5(Sn,As)2
Reference: www.cannonmicroprobe.com/Mineral_Specimens.htm
Pentlandite
Formula: (FexNiy)Σ9S8
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.; Econ Geol (1986) 81:1187-1195; Canadian Mineralogist Vol. 23, pp.149-162(1985)
Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Platarsite
Formula: PtAsS
Reference: Bart Cannon (Cannon Microprobe) analysis # MR 5-
Plumbopalladinite
Formula: Pd3Pb2
Reference: www.cannonmicroprobe.com/Mineral_Specimens.htm
Potarite
Formula: PdHg
Reference: www.cannonmicroprobe.com/Mineral_Specimens.htm
Pyrite
Formula: FeS2
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.; Canadian Mineralogist Vol. 23, pp.149-162(1985)
Pyrrhotite
Formula: Fe7S8
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.; Econ Geol (1986) 81:1187-1195; Canadian Mineralogist Vol. 23, pp.149-162(1985)
'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Stannopalladinite
Formula: (Pd,Cu)3Sn2
Reference: Bart Cannon (Cannon Microprobe) analysis # MR 5-4.
Talc
Formula: Mg3Si4O10(OH)2
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Telluropalladinite
Formula: Pd9Te4
Reference: www.cannonmicroprobe.com/Mineral_Specimens.htm
Tremolite
Formula: ☐{Ca2}{Mg5}(Si8O22)(OH)2
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Tulameenite
Formula: Pt2CuFe
Reference: Canadian Mineralogist Vol. 23, pp.149-162(1985)
Vysotskite
Formula: (Pd,Ni)S
Reference: Canadian Mineralogist Vol. 23, pp."149-162(1 985)
Zvyagintsevite
Formula: Pd3Pb
Reference: www.cannonmicroprobe.com/Mineral_Specimens.htm

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Atokite1.AG.10(Pd,Pt)3Sn
Gold1.AA.05Au
var: Palladian Gold1.AA.05(Au,Pd)
Isoferroplatinum1.AG.35Pt3Fe
Plumbopalladinite1.AG.25Pd3Pb2
Potarite1.AD.25PdHg
Stannopalladinite1.AG.25(Pd,Cu)3Sn2
Tulameenite1.AG.40Pt2CuFe
Zvyagintsevite1.AG.10Pd3Pb
Group 2 - Sulphides and Sulfosalts
Arsenopalladinite2.AC.10cPd8(As,Sb)3
Braggite2.CC.35a(Pt,Pd,Ni)S
Chalcopyrite2.CB.10aCuFeS2
Cooperite2.CC.35bPtS
Cubanite2.CB.55aCuFe2S3
Keithconnite2.BC.20Pd20Te7
Kotulskite2.CC.05Pd(Te,Bi)
Laurite2.EB.05aRuS2
Mackinawite2.CC.25(Fe,Ni)9S8
Moncheite2.EA.20(Pt,Pd)(Te,Bi)2
Palarstanide2.AC.20bPd5(Sn,As)2
Pentlandite2.BB.15(FexNiy)Σ9S8
Platarsite2.EB.25PtAsS
Pyrite2.EB.05aFeS2
Pyrrhotite2.CC.10Fe7S8
Telluropalladinite2.BC.30Pd9Te4
Vysotskite2.CC.35a(Pd,Ni)S
Group 4 - Oxides and Hydroxides
Magnetite4.BB.05Fe2+Fe3+2O4
Group 9 - Silicates
Enstatite9.DA.05MgSiO3
var: Bronzite9.DA.05(Mg,Fe2+)2[SiO3]2
Phlogopite9.EC.20KMg3(AlSi3O10)(OH)2
Talc9.EC.05Mg3Si4O10(OH)2
Tremolite9.DE.10☐{Ca2}{Mg5}(Si8O22)(OH)2
Unclassified Minerals, Rocks, etc.
'Albite-Anorthite Series'-
'Apatite'-Ca5(PO4)3(Cl/F/OH)
'Chlorite Group'-
'Fayalite-Forsterite Series'-
'Hornblende'-
Kojonenite (TL)-Pd7-xSnTe2 (0.3 ≤ x ≤ 0.8)
'Serpentine Subgroup'-D3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Gold1.1.1.1Au
Platinum Group Metals and Alloys
Atokite1.2.5.3(Pd,Pt)3Sn
Isoferroplatinum1.2.5.1Pt3Fe
Plumbopalladinite1.2.11.1Pd3Pb2
Potarite1.2.4.4PdHg
Stannopalladinite1.2.9.1(Pd,Cu)3Sn2
Tulameenite1.2.4.2Pt2CuFe
Zvyagintsevite1.2.5.4Pd3Pb
Group 2 - SULFIDES
AmBnXp, with (m+n):p = 3:1
Keithconnite2.2.6.1Pd20Te7
AmBnXp, with (m+n):p = 5:2
Palarstanide2.3.3.2Pd5(Sn,As)2
AmBnXp, with (m+n):p = 9:8
Mackinawite2.7.2.1(Fe,Ni)9S8
Pentlandite2.7.1.1(FexNiy)Σ9S8
AmXp, with m:p = 1:1
Braggite2.8.5.3(Pt,Pd,Ni)S
Cooperite2.8.5.1PtS
Pyrrhotite2.8.10.1Fe7S8
Vysotskite2.8.5.2(Pd,Ni)S
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
Cubanite2.9.13.1CuFe2S3
AmBnXp, with (m+n):p = 1:2
Laurite2.12.1.10RuS2
Moncheite2.12.14.3(Pt,Pd)(Te,Bi)2
Platarsite2.12.3.6PtAsS
Pyrite2.12.1.1FeS2
Miscellaneous
Arsenopalladinite2.16.5.1Pd8(As,Sb)3
Telluropalladinite2.16.6.1Pd9Te4
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=2
Enstatite65.1.2.1MgSiO3
Group 66 - INOSILICATES Double-Width,Unbranched Chains,(W=2)
Amphiboles - Mg-Fe-Mn-Li subgroup
Tremolite66.1.3a.1☐{Ca2}{Mg5}(Si8O22)(OH)2
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Phlogopite71.2.2b.1KMg3(AlSi3O10)(OH)2
Talc71.2.1.3Mg3Si4O10(OH)2
Unclassified Minerals, Mixtures, etc.
'Albite-Anorthite Series'-
'Apatite'-Ca5(PO4)3(Cl/F/OH)
'Chlorite Group'-
Enstatite
var: Bronzite
-(Mg,Fe2+)2[SiO3]2
'Fayalite-Forsterite Series'-
Gold
var: Palladian Gold
-(Au,Pd)
'Hornblende'-
Kojonenite (TL)-Pd7-xSnTe2 (0.3 ≤ x ≤ 0.8)
Kotulskite-Pd(Te,Bi)
'Serpentine Subgroup'-D3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn

List of minerals for each chemical element

HHydrogen
H PhlogopiteKMg3(AlSi3O10)(OH)2
H ApatiteCa5(PO4)3(Cl/F/OH)
H Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
H TalcMg3Si4O10(OH)2
H Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
OOxygen
O PhlogopiteKMg3(AlSi3O10)(OH)2
O ApatiteCa5(PO4)3(Cl/F/OH)
O Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
O TalcMg3Si4O10(OH)2
O MagnetiteFe2+Fe23+O4
O Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
O Enstatite (var: Bronzite)(Mg,Fe2+)2[SiO3]2
O EnstatiteMgSiO3
FFluorine
F ApatiteCa5(PO4)3(Cl/F/OH)
MgMagnesium
Mg PhlogopiteKMg3(AlSi3O10)(OH)2
Mg Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
Mg TalcMg3Si4O10(OH)2
Mg Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
Mg Enstatite (var: Bronzite)(Mg,Fe2+)2[SiO3]2
Mg EnstatiteMgSiO3
AlAluminium
Al PhlogopiteKMg3(AlSi3O10)(OH)2
Al Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
SiSilicon
Si PhlogopiteKMg3(AlSi3O10)(OH)2
Si Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
Si TalcMg3Si4O10(OH)2
Si Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
Si Enstatite (var: Bronzite)(Mg,Fe2+)2[SiO3]2
Si EnstatiteMgSiO3
PPhosphorus
P ApatiteCa5(PO4)3(Cl/F/OH)
SSulfur
S Vysotskite(Pd,Ni)S
S Braggite(Pt,Pd,Ni)S
S CooperitePtS
S PyrrhotiteFe7S8
S Pentlandite(FexNiy)Σ9S8
S PyriteFeS2
S ChalcopyriteCuFeS2
S CubaniteCuFe2S3
S Mackinawite(Fe,Ni)9S8
S PlatarsitePtAsS
S LauriteRuS2
ClChlorine
Cl ApatiteCa5(PO4)3(Cl/F/OH)
KPotassium
K PhlogopiteKMg3(AlSi3O10)(OH)2
CaCalcium
Ca ApatiteCa5(PO4)3(Cl/F/OH)
Ca Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
MnManganese
Mn Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
FeIron
Fe PyrrhotiteFe7S8
Fe Pentlandite(FexNiy)Σ9S8
Fe PyriteFeS2
Fe ChalcopyriteCuFeS2
Fe Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
Fe MagnetiteFe2+Fe23+O4
Fe CubaniteCuFe2S3
Fe IsoferroplatinumPt3Fe
Fe TulameenitePt2CuFe
Fe Mackinawite(Fe,Ni)9S8
Fe Enstatite (var: Bronzite)(Mg,Fe2+)2[SiO3]2
NiNickel
Ni Vysotskite(Pd,Ni)S
Ni Pentlandite(FexNiy)Σ9S8
Ni Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
Ni Mackinawite(Fe,Ni)9S8
CuCopper
Cu ChalcopyriteCuFeS2
Cu CubaniteCuFe2S3
Cu TulameenitePt2CuFe
Cu Stannopalladinite(Pd,Cu)3Sn2
ZnZinc
Zn Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
AsArsenic
As ArsenopalladinitePd8(As,Sb)3
As PalarstanidePd5(Sn,As)2
As PlatarsitePtAsS
RuRuthenium
Ru LauriteRuS2
PdPalladium
Pd KojonenitePd7-xSnTe2 (0.3 ≤ x ≤ 0.8)
Pd Vysotskite(Pd,Ni)S
Pd ArsenopalladinitePd8(As,Sb)3
Pd Atokite(Pd,Pt)3Sn
Pd KeithconnitePd20Te7
Pd Moncheite(Pt,Pd)(Te,Bi)2
Pd PalarstanidePd5(Sn,As)2
Pd Gold (var: Palladian Gold)(Au,Pd)
Pd PlumbopalladinitePd3Pb2
Pd PotaritePdHg
Pd TelluropalladinitePd9Te4
Pd ZvyagintsevitePd3Pb
Pd KotulskitePd(Te,Bi)
Pd Stannopalladinite(Pd,Cu)3Sn2
SnTin
Sn KojonenitePd7-xSnTe2 (0.3 ≤ x ≤ 0.8)
Sn Atokite(Pd,Pt)3Sn
Sn PalarstanidePd5(Sn,As)2
Sn Stannopalladinite(Pd,Cu)3Sn2
SbAntimony
Sb ArsenopalladinitePd8(As,Sb)3
TeTellurium
Te KojonenitePd7-xSnTe2 (0.3 ≤ x ≤ 0.8)
Te KeithconnitePd20Te7
Te Moncheite(Pt,Pd)(Te,Bi)2
Te TelluropalladinitePd9Te4
Te KotulskitePd(Te,Bi)
PtPlatinum
Pt Braggite(Pt,Pd,Ni)S
Pt CooperitePtS
Pt Moncheite(Pt,Pd)(Te,Bi)2
Pt IsoferroplatinumPt3Fe
Pt TulameenitePt2CuFe
Pt PlatarsitePtAsS
AuGold
Au Gold (var: Palladian Gold)(Au,Pd)
Au GoldAu
HgMercury
Hg PotaritePdHg
PbLead
Pb PlumbopalladinitePd3Pb2
Pb ZvyagintsevitePd3Pb
BiBismuth
Bi Moncheite(Pt,Pd)(Te,Bi)2
Bi KotulskitePd(Te,Bi)

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Canadian Mineralogist (1985): 23: 149-162.
Barnes, S.J. and Naldrett, A.J. (1985), Geochemistry of the J-M (Howland) Reef of the Stillwater complex, Minneapolis Adit area. I. Sulfide chemistry and sulfide-olivine equilibrium. Economic Geology: 80: 627-645.
Economic Geology (1986): 81: 1187-1195.
Stanley, C.J. and Vymazalová, A. (2014) Kojonenite, IMA 2013-132. CNMNC Newsletter No. 20, June 2014, page 552; Mineralogical Magazine: 78: 549-558.

External Links

www.cannonmicroprobe.com/Mineral_Specimens.htm


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