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Duluth Complex, Minnesota, USAi
Regional Level Types
Duluth ComplexComplex
MinnesotaState
USACountry

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PhotosSearchMineralogy
08747950017367471596849.jpg
Haycockite, etc.

Duluth Complex, Minnesota, USA
08271800017272042771011.jpg
Hibbingite

Hibbingite occurrences, Lake County, Minnesota, USA
09857670017272042621350.jpg
Garnet Group

Unspecified locality, Duluth Gabbro occurrence, Lake County, Minnesota, USA
06103110017365271845424.jpg
Haycockite, etc.

Duluth Complex, Minnesota, USA
03859190017271923737087.jpg
Hibbingite

Hibbingite occurrences, Lake County, Minnesota, USA
06827130017489931518384.jpg
Garnet Group

Unspecified locality, Duluth Gabbro occurrence, Lake County, Minnesota, USA
08747950017367471596849.jpg
Haycockite, etc.

Duluth Complex, Minnesota, USA
03859190017271923737087.jpg
Hibbingite

Hibbingite occurrences, Lake County, Minnesota, USA
Latitude & Longitude (WGS84):
47° North , 91° West (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~81km
GRN:
N32W46
Type:
Complex
Köppen climate type:
Dfb : Warm-summer humid continental climate
Mindat Locality ID:
7919
Long-form identifier:
mindat:1:2:7919:1
GUID (UUID V4):
0
Other/historical names associated with this locality:
Duluth Gabbro


[= Duluth Complex?]
Intrusive rocks formed about 1.1 billion years ago during the Midcontinent Rift.

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

50 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
ⓘ Akaganeite
Formula: (Fe3+,Ni2+)8(OH,O)16Cl1.25 · nH2O
ⓘ 'Amphibole Supergroup'
Formula: AB2C5(T8O22)W2
ⓘ 'Amphibole Supergroup var. Uralite'
Formula: AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
ⓘ 'Apatite'
Formula: Ca5(PO4)3A
ⓘ Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
ⓘ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ Bornite
Formula: Cu5FeS4
ⓘ Chalcopyrite
Formula: CuFeS2
Localities: Reported from at least 6 localities in this region.
ⓘ Chamosite
Formula: Fe2+5Al(AlSi3O10)(OH)8
ⓘ 'Chlorite Group'
ⓘ Cobaltite
Formula: CoAsS
ⓘ Cordierite
Formula: Mg2Al4Si5O18
ⓘ Covellite
Formula: CuS
ⓘ Cubanite
Formula: CuFe2S3
ⓘ Cuprorhodsite
Formula: (Cu+0.5Fe3+0.5)Rh3+2S4
References:
Bart Cannon SEM analysisIdentification: SEM-EDS
ⓘ Digenite
Formula: Cu9S5
ⓘ Fayalite
Formula: Fe2+2(SiO4)
ⓘ 'Fayalite-Forsterite Series'
ⓘ Forsterite
Formula: Mg2(SiO4)
ⓘ Galena
Formula: PbS
ⓘ 'Garnet Group'
Formula: X3Z2(SiO4)3
ⓘ Gersdorffite
Formula: NiAsS
ⓘ Goethite
Formula: Fe3+O(OH)
ⓘ Graphite
Formula: C
ⓘ Haycockite
Formula: Cu4Fe5S8
ⓘ Hibbingite (TL)
Formula: Fe2+2(OH)3Cl
Type Locality:
ⓘ Hisingerite
Formula: Fe3+2(Si2O5)(OH)4 · 2H2O
ⓘ Ilmenite
Formula: Fe2+TiO3
Localities: Reported from at least 10 localities in this region.
ⓘ Lizardite
Formula: Mg3(Si2O5)(OH)4
ⓘ Löllingite
Formula: FeAs2
ⓘ Magnetite
Formula: Fe2+Fe3+2O4
Localities: Reported from at least 13 localities in this region.
ⓘ Marcasite
Formula: FeS2
ⓘ Maucherite
Formula: Ni11As8
ⓘ 'Monazite Group' ?
Formula: REE(PO4)
ⓘ Mooihoekite
Formula: Cu9Fe9S16
ⓘ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ Muscovite var. Sericite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ Native Bismuth
Formula: Bi
ⓘ Native Copper
Formula: Cu
ⓘ Native Silver
Formula: Ag
ⓘ Nickeline
Formula: NiAs
ⓘ 'Olivine Group'
Formula: M2SiO4
ⓘ Pentlandite
Formula: (NixFey)Σ9S8
ⓘ 'Plagioclase'
Formula: (Na,Ca)[(Si,Al)AlSi2]O8
ⓘ Prehnite
Formula: Ca2Al2Si3O10(OH)2
ⓘ Pyrite
Formula: FeS2
ⓘ Pyrite var. Bravoite
Formula: (Fe,Ni)S2
ⓘ 'Pyroxene Group'
Formula: ADSi2O6
ⓘ Pyrrhotite
Formula: Fe1-xS
ⓘ Rammelsbergite
Formula: NiAs2
ⓘ Romarchite
Formula: SnO
ⓘ Safflorite
Formula: (Co,Ni,Fe)As2
ⓘ Saponite
Formula: Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
ⓘ 'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4
ⓘ Sperrylite
Formula: PtAs2
ⓘ Sphalerite
Formula: ZnS
ⓘ Stibiopalladinite
Formula: Pd5Sb2
ⓘ Tetradymite
Formula: Bi2Te2S
ⓘ Troilite
Formula: FeS
ⓘ Uraninite
Formula: UO2
ⓘ Uranophane
Formula: Ca(UO2)2(SiO3OH)2 · 5H2O
Description: with uraninite and galena
ⓘ Vesuvianite
Formula: Ca19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
References:
Daniel Hummer CollectionIdentified by Daniel Hummer: Visual Identification
ⓘ Yarrowite
Formula: Cu9S8

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘNative Copper1.AA.05Cu
ⓘNative Silver1.AA.05Ag
ⓘNative Bismuth1.CA.05Bi
ⓘGraphite1.CB.05aC
Group 2 - Sulphides and Sulfosalts
ⓘMaucherite2.AB.15Ni11As8
ⓘStibiopalladinite2.AC.20aPd5Sb2
ⓘDigenite2.BA.10Cu9S5
ⓘBornite2.BA.15Cu5FeS4
ⓘPentlandite2.BB.15(NixFey)Σ9S8
ⓘCovellite2.CA.05aCuS
ⓘYarrowite2.CA.05dCu9S8
ⓘSphalerite2.CB.05aZnS
ⓘChalcopyrite2.CB.10aCuFeS2
ⓘHaycockite2.CB.10bCu4Fe5S8
ⓘMooihoekite2.CB.10bCu9Fe9S16
ⓘCubanite2.CB.55aCuFe2S3
ⓘNickeline2.CC.05NiAs
ⓘPyrrhotite2.CC.10Fe1-xS
ⓘTroilite2.CC.10FeS
ⓘGalena2.CD.10PbS
ⓘCuprorhodsite2.DA.05(Cu+0.5Fe3+0.5)Rh3+2S4
ⓘTetradymite2.DC.05Bi2Te2S
ⓘPyrite
var. Bravoite		2.EB.05a(Fe,Ni)S2
ⓘ2.EB.05aFeS2
ⓘSperrylite2.EB.05aPtAs2
ⓘMarcasite2.EB.10aFeS2
ⓘLöllingite2.EB.15aFeAs2
ⓘRammelsbergite2.EB.15aNiAs2
ⓘSafflorite2.EB.15a(Co,Ni,Fe)As2
ⓘCobaltite2.EB.25CoAsS
ⓘGersdorffite2.EB.25NiAsS
Group 3 - Halides
ⓘHibbingite (TL)3.DA.10aFe2+2(OH)3Cl
Group 4 - Oxides and Hydroxides
ⓘGoethite4.00.Fe3+O(OH)
ⓘRomarchite4.AC.20SnO
ⓘMagnetite4.BB.05Fe2+Fe3+2O4
ⓘIlmenite4.CB.05Fe2+TiO3
ⓘAkaganeite4.DK.05(Fe3+,Ni2+)8(OH,O)16Cl1.25 · nH2O
ⓘUraninite4.DL.05UO2
Group 9 - Silicates
ⓘFayalite9.AC.05Fe2+2(SiO4)
ⓘForsterite9.AC.05Mg2(SiO4)
ⓘUranophane9.AK.15Ca(UO2)2(SiO3OH)2 · 5H2O
ⓘVesuvianite9.BG.35Ca19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
ⓘCordierite9.CJ.10Mg2Al4Si5O18
ⓘAugite9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
ⓘActinolite9.DE.10◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
ⓘPrehnite9.DP.20Ca2Al2Si3O10(OH)2
ⓘMuscovite9.EC.15KAl2(AlSi3O10)(OH)2
ⓘvar. Sericite9.EC.15KAl2(AlSi3O10)(OH)2
ⓘSaponite9.EC.45Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
ⓘChamosite9.EC.55Fe2+5Al(AlSi3O10)(OH)8
ⓘHisingerite9.ED.10Fe3+2(Si2O5)(OH)4 · 2H2O
ⓘLizardite9.ED.15Mg3(Si2O5)(OH)4
Unclassified
ⓘ'Amphibole Supergroup'-AB2C5(T8O22)W2
ⓘ'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ'Chlorite Group'-
ⓘ'Monazite Group' ?-REE(PO4)
ⓘ'Amphibole Supergroup
var. Uralite'		-AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
ⓘ'Fayalite-Forsterite Series'-
ⓘ'Plagioclase'-(Na,Ca)[(Si,Al)AlSi2]O8
ⓘ'Pyroxene Group'-ADSi2O6
ⓘ'Garnet Group'-X3Z2(SiO4)3
ⓘ'Serpentine Subgroup'-D3[Si2O5](OH)4
ⓘ'Apatite'-Ca5(PO4)3A
ⓘ'Olivine Group'-M2SiO4

List of minerals for each chemical element

HHydrogen
Hⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Hⓘ Akaganeite(Fe3+,Ni2+)8(OH,O)16Cl1.25 · nH2O
Hⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Hⓘ ChamositeFe52+Al(AlSi3O10)(OH)8
Hⓘ GoethiteFe3+O(OH)
Hⓘ HibbingiteFe22+(OH)3Cl
Hⓘ HisingeriteFe23+(Si2O5)(OH)4 · 2H2O
Hⓘ LizarditeMg3(Si2O5)(OH)4
Hⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Hⓘ PrehniteCa2Al2Si3O10(OH)2
Hⓘ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Hⓘ Amphibole Supergroup var. UraliteAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Hⓘ UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
Hⓘ VesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
Hⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Hⓘ Serpentine SubgroupD3[Si2O5](OH)4
CCarbon
Cⓘ GraphiteC
OOxygen
Oⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Oⓘ Akaganeite(Fe3+,Ni2+)8(OH,O)16Cl1.25 · nH2O
Oⓘ Amphibole SupergroupAB2C5(T8O22)W2
Oⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Oⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Oⓘ ChamositeFe52+Al(AlSi3O10)(OH)8
Oⓘ CordieriteMg2Al4Si5O18
Oⓘ FayaliteFe22+(SiO4)
Oⓘ ForsteriteMg2(SiO4)
Oⓘ GoethiteFe3+O(OH)
Oⓘ HibbingiteFe22+(OH)3Cl
Oⓘ HisingeriteFe23+(Si2O5)(OH)4 · 2H2O
Oⓘ IlmeniteFe2+TiO3
Oⓘ LizarditeMg3(Si2O5)(OH)4
Oⓘ MagnetiteFe2+Fe23+O4
Oⓘ Monazite GroupREE(PO4)
Oⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Oⓘ PrehniteCa2Al2Si3O10(OH)2
Oⓘ RomarchiteSnO
Oⓘ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Oⓘ Amphibole Supergroup var. UraliteAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Oⓘ UraniniteUO2
Oⓘ UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
Oⓘ VesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
Oⓘ Fayalite-Forsterite Series
Oⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Oⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Oⓘ Pyroxene GroupADSi2O6
Oⓘ Garnet GroupX3Z2(SiO4)3
Oⓘ Serpentine SubgroupD3[Si2O5](OH)4
Oⓘ ApatiteCa5(PO4)3A
Oⓘ Olivine GroupM2SiO4
FFluorine
Fⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Fⓘ Amphibole Supergroup var. UraliteAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
NaSodium
Naⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
MgMagnesium
Mgⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Mgⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Mgⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Mgⓘ CordieriteMg2Al4Si5O18
Mgⓘ ForsteriteMg2(SiO4)
Mgⓘ LizarditeMg3(Si2O5)(OH)4
Mgⓘ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Mgⓘ VesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
Mgⓘ Fayalite-Forsterite Series
AlAluminium
Alⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Alⓘ ChamositeFe52+Al(AlSi3O10)(OH)8
Alⓘ CordieriteMg2Al4Si5O18
Alⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Alⓘ PrehniteCa2Al2Si3O10(OH)2
Alⓘ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Alⓘ Amphibole Supergroup var. UraliteAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Alⓘ VesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
Alⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Alⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
SiSilicon
Siⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Siⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Siⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Siⓘ ChamositeFe52+Al(AlSi3O10)(OH)8
Siⓘ CordieriteMg2Al4Si5O18
Siⓘ FayaliteFe22+(SiO4)
Siⓘ ForsteriteMg2(SiO4)
Siⓘ HisingeriteFe23+(Si2O5)(OH)4 · 2H2O
Siⓘ LizarditeMg3(Si2O5)(OH)4
Siⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Siⓘ PrehniteCa2Al2Si3O10(OH)2
Siⓘ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Siⓘ Amphibole Supergroup var. UraliteAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Siⓘ UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
Siⓘ VesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
Siⓘ Fayalite-Forsterite Series
Siⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Siⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Siⓘ Pyroxene GroupADSi2O6
Siⓘ Garnet GroupX3Z2(SiO4)3
Siⓘ Serpentine SubgroupD3[Si2O5](OH)4
Siⓘ Olivine GroupM2SiO4
PPhosphorus
Pⓘ Monazite GroupREE(PO4)
Pⓘ ApatiteCa5(PO4)3A
SSulfur
Sⓘ BorniteCu5FeS4
Sⓘ Pyrite var. Bravoite(Fe,Ni)S2
Sⓘ ChalcopyriteCuFeS2
Sⓘ CobaltiteCoAsS
Sⓘ CovelliteCuS
Sⓘ CubaniteCuFe2S3
Sⓘ Cuprorhodsite(Cu+0.5Fe3+0.5)Rh23+S4
Sⓘ DigeniteCu9S5
Sⓘ GalenaPbS
Sⓘ GersdorffiteNiAsS
Sⓘ HaycockiteCu4Fe5S8
Sⓘ MarcasiteFeS2
Sⓘ MooihoekiteCu9Fe9S16
Sⓘ Pentlandite(NixFey)Σ9S8
Sⓘ PyriteFeS2
Sⓘ PyrrhotiteFe1-xS
Sⓘ SphaleriteZnS
Sⓘ TetradymiteBi2Te2S
Sⓘ TroiliteFeS
Sⓘ YarrowiteCu9S8
ClChlorine
Clⓘ Akaganeite(Fe3+,Ni2+)8(OH,O)16Cl1.25 · nH2O
Clⓘ HibbingiteFe22+(OH)3Cl
Clⓘ Amphibole Supergroup var. UraliteAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
KPotassium
Kⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Kⓘ MuscoviteKAl2(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ⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Caⓘ PrehniteCa2Al2Si3O10(OH)2
Caⓘ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Caⓘ UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
Caⓘ VesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
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ⓘ Amphibole Supergroup var. UraliteAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
FeIron
Feⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Feⓘ Akaganeite(Fe3+,Ni2+)8(OH,O)16Cl1.25 · nH2O
Feⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
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ⓘ ChamositeFe52+Al(AlSi3O10)(OH)8
Feⓘ CubaniteCuFe2S3
Feⓘ Cuprorhodsite(Cu+0.5Fe3+0.5)Rh23+S4
Feⓘ FayaliteFe22+(SiO4)
Feⓘ GoethiteFe3+O(OH)
Feⓘ HaycockiteCu4Fe5S8
Feⓘ HibbingiteFe22+(OH)3Cl
Feⓘ HisingeriteFe23+(Si2O5)(OH)4 · 2H2O
Feⓘ IlmeniteFe2+TiO3
Feⓘ LöllingiteFeAs2
Feⓘ MagnetiteFe2+Fe23+O4
Feⓘ MarcasiteFeS2
Feⓘ MooihoekiteCu9Fe9S16
Feⓘ Pentlandite(NixFey)Σ9S8
Feⓘ PyriteFeS2
Feⓘ PyrrhotiteFe1-xS
Feⓘ Safflorite(Co,Ni,Fe)As2
Feⓘ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Feⓘ TroiliteFeS
Feⓘ VesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
Feⓘ Fayalite-Forsterite Series
CoCobalt
Coⓘ CobaltiteCoAsS
Coⓘ Safflorite(Co,Ni,Fe)As2
NiNickel
Niⓘ Akaganeite(Fe3+,Ni2+)8(OH,O)16Cl1.25 · nH2O
Niⓘ Pyrite var. Bravoite(Fe,Ni)S2
Niⓘ GersdorffiteNiAsS
Niⓘ MaucheriteNi11As8
Niⓘ NickelineNiAs
Niⓘ Pentlandite(NixFey)Σ9S8
Niⓘ RammelsbergiteNiAs2
Niⓘ Safflorite(Co,Ni,Fe)As2
CuCopper
Cuⓘ BorniteCu5FeS4
Cuⓘ ChalcopyriteCuFeS2
Cuⓘ CovelliteCuS
Cuⓘ CubaniteCuFe2S3
Cuⓘ Cuprorhodsite(Cu+0.5Fe3+0.5)Rh23+S4
Cuⓘ Native CopperCu
Cuⓘ DigeniteCu9S5
Cuⓘ HaycockiteCu4Fe5S8
Cuⓘ MooihoekiteCu9Fe9S16
Cuⓘ YarrowiteCu9S8
ZnZinc
Znⓘ SphaleriteZnS
AsArsenic
Asⓘ CobaltiteCoAsS
Asⓘ GersdorffiteNiAsS
Asⓘ LöllingiteFeAs2
Asⓘ MaucheriteNi11As8
Asⓘ NickelineNiAs
Asⓘ RammelsbergiteNiAs2
Asⓘ Safflorite(Co,Ni,Fe)As2
Asⓘ SperrylitePtAs2
RhRhodium
Rhⓘ Cuprorhodsite(Cu+0.5Fe3+0.5)Rh23+S4
PdPalladium
Pdⓘ StibiopalladinitePd5Sb2
AgSilver
Agⓘ Native SilverAg
SnTin
Snⓘ RomarchiteSnO
SbAntimony
Sbⓘ StibiopalladinitePd5Sb2
TeTellurium
Teⓘ TetradymiteBi2Te2S
PtPlatinum
Ptⓘ SperrylitePtAs2
PbLead
Pbⓘ GalenaPbS
BiBismuth
Biⓘ Native BismuthBi
Biⓘ TetradymiteBi2Te2S
UUranium
Uⓘ UraniniteUO2
Uⓘ UranophaneCa(UO2)2(SiO3OH)2 · 5H2O

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

Listerud, W.H., Meineke, D.G. (1977) Mineral resources of a portion of the Duluth Complex and adjacent rocks in St. Louis and Lake counties, northeastern Minnesota. Minnesota Department of Natural Resources, Division of Minerals Mineral Exploration Section, Report 93.
Ripley, E.M. (1986) Applications of stable isotope studies to problems of magmatic sulfide ore genesis with special reference to the Duluth Complex, Minnesota. In: Geology and Metallogeny of Copper Deposits (G.H. Friedrich, A.D. Genkin, A.J. Naldrett, J.D. Ridge, R.H. Sillitoe & F.M. Vokes, editors). Springer-Verlag, Berlin, Germany (25-42).
Hauck, S.A., Severson, M.J., Zanko, L., Barnes, S.J., Morton, P., Alminas, H., ... & Dahlberg, E.H. (1997) An overview of the geology and oxide, sulfide, and platinum-group element mineralization along the western and northern contacts of the Duluth Complex. Special Papers-Geological Society of America: 137-186.
Cook, Robert B. (2000) Connoisseur's Choice: Cubanite, Chibougamau, Quebec, Canada. Rocks & Minerals, 75 (6). 404-406 doi:10.1080/00357520009605665
Tutolo, Benjamin, Evans, Bernard, Kuehner, Scott (2019) Serpentine–Hisingerite Solid Solution in Altered Ferroan Peridotite and Olivine Gabbro. Minerals, 9 (1) 47 doi:10.3390/min9010047
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