Duluth Complex, Minnesota, USAi
| Regional Level Types | |
|---|---|
| Duluth Complex | Complex |
| Minnesota | State |
| USA | Country |
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Latitude & Longitude (WGS84):
47° North , 91° West (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~81km
Type:
Köppen climate type:
Mindat Locality ID:
7919
Long-form identifier:
mindat:1:2:7919:1
GUID (UUID V4):
94c1de65-fecc-442c-861a-b1e45f2bb399
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 ElementsCommodity 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-localities49 valid minerals. 1 (TL) - type locality of valid minerals.
Rock Types Recorded
Note: data is currently VERY limited. Please bear with us while we work towards adding this information!
Rock list contains entries from the region specified including sub-localities
Select Rock List Type
Alphabetical List Tree DiagramDetailed 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((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| ⓘ 'Amphibole Supergroup var. Uralite' Formula: AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| ⓘ 'Apatite' Formula: Ca5(PO4)3(Cl/F/OH) |
| ⓘ Augite Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6 Localities: |
| ⓘ 'Biotite' Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 Localities: |
| ⓘ Bismuth Formula: Bi |
| ⓘ Bornite Formula: Cu5FeS4 Localities: |
| ⓘ Chalcopyrite Formula: CuFeS2 Localities: Reported from at least 6 localities in this region. |
| ⓘ Chamosite Formula: (Fe2+)5Al(Si,Al)4O10(OH,O)8 |
| ⓘ 'Chlorite Group' Localities: |
| ⓘ Cobaltite Formula: CoAsS |
| ⓘ Copper Formula: Cu |
| ⓘ Cordierite Formula: (Mg,Fe)2Al3(AlSi5O18) |
| ⓘ Covellite Formula: CuS |
| ⓘ Cubanite Formula: CuFe2S3 Localities: |
| ⓘ Cuprorhodsite Formula: (Cu1+0.5Fe3+0.5)Rh3+2S4 References: Bart Cannon SEM analysisIdentification: SEM-EDS |
| ⓘ Digenite Formula: Cu9S5 |
| ⓘ Fayalite Formula: Fe2+2SiO4 |
| ⓘ 'Fayalite-Forsterite Series' Localities: |
| ⓘ Forsterite Formula: Mg2SiO4 |
| ⓘ Galena Formula: PbS |
| ⓘ 'Garnet Group' Formula: X3Z2(SiO4)3 |
| ⓘ Gersdorffite Formula: NiAsS |
| ⓘ Goethite Formula: α-Fe3+O(OH) |
| ⓘ Graphite Formula: C Localities: |
| ⓘ 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' ? Formula: REE(PO4) |
| ⓘ Mooihoekite Formula: Cu9Fe9S16 |
| ⓘ Muscovite Formula: KAl2(AlSi3O10)(OH)2 |
| ⓘ Muscovite var. Sericite Formula: KAl2(AlSi3O10)(OH)2 |
| ⓘ Nickeline Formula: NiAs Localities: |
| ⓘ 'Olivine Group' Formula: M2SiO4 |
| ⓘ Pentlandite Formula: (NixFey)Σ9S8 Localities: |
| ⓘ 'Plagioclase' Formula: (Na,Ca)[(Si,Al)AlSi2]O8 Localities: |
| ⓘ Prehnite Formula: Ca2Al2Si3O10(OH)2 |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Pyrite var. Bravoite Formula: (Fe,Ni)S2 |
| ⓘ 'Pyroxene Group' Formula: ADSi2O6 Localities: |
| ⓘ Pyrrhotite Formula: Fe1-xS Localities: |
| ⓘ 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 Localities: |
| ⓘ Silver Formula: Ag |
| ⓘ 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 |
| ⓘ Yarrowite Formula: Cu9S8 |
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Copper | 1.AA.05 | Cu |
| ⓘ | Silver | 1.AA.05 | Ag |
| ⓘ | Bismuth | 1.CA.05 | Bi |
| ⓘ | Graphite | 1.CB.05a | C |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Maucherite | 2.AB.15 | Ni11As8 |
| ⓘ | Stibiopalladinite | 2.AC.20a | Pd5Sb2 |
| ⓘ | Digenite | 2.BA.10 | Cu9S5 |
| ⓘ | Bornite | 2.BA.15 | Cu5FeS4 |
| ⓘ | Pentlandite | 2.BB.15 | (NixFey)Σ9S8 |
| ⓘ | Covellite | 2.CA.05a | CuS |
| ⓘ | Yarrowite | 2.CA.05d | Cu9S8 |
| ⓘ | Sphalerite | 2.CB.05a | ZnS |
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Haycockite | 2.CB.10b | Cu4Fe5S8 |
| ⓘ | Mooihoekite | 2.CB.10b | Cu9Fe9S16 |
| ⓘ | Cubanite | 2.CB.55a | CuFe2S3 |
| ⓘ | Nickeline | 2.CC.05 | NiAs |
| ⓘ | Troilite | 2.CC.10 | FeS |
| ⓘ | Pyrrhotite | 2.CC.10 | Fe1-xS |
| ⓘ | Galena | 2.CD.10 | PbS |
| ⓘ | Cuprorhodsite | 2.DA.05 | (Cu1+0.5Fe3+0.5)Rh3+2S4 |
| ⓘ | Tetradymite | 2.DC.05 | Bi2Te2S |
| ⓘ | Sperrylite | 2.EB.05a | PtAs2 |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| ⓘ | var. Bravoite | 2.EB.05a | (Fe,Ni)S2 |
| ⓘ | Marcasite | 2.EB.10a | FeS2 |
| ⓘ | Löllingite | 2.EB.15a | FeAs2 |
| ⓘ | Safflorite | 2.EB.15a | (Co,Ni,Fe)As2 |
| ⓘ | Rammelsbergite | 2.EB.15a | NiAs2 |
| ⓘ | Gersdorffite | 2.EB.25 | NiAsS |
| ⓘ | Cobaltite | 2.EB.25 | CoAsS |
| Group 3 - Halides | |||
| ⓘ | Hibbingite (TL) | 3.DA.10a | Fe2+2(OH)3Cl |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Goethite | 4.00. | α-Fe3+O(OH) |
| ⓘ | Romarchite | 4.AC.20 | SnO |
| ⓘ | Magnetite | 4.BB.05 | Fe2+Fe3+2O4 |
| ⓘ | Ilmenite | 4.CB.05 | Fe2+TiO3 |
| ⓘ | Akaganeite | 4.DK.05 | (Fe3+,Ni2+)8(OH,O)16Cl1.25 · nH2O |
| ⓘ | Uraninite | 4.DL.05 | UO2 |
| Group 9 - Silicates | |||
| ⓘ | Forsterite | 9.AC.05 | Mg2SiO4 |
| ⓘ | Fayalite | 9.AC.05 | Fe2+2SiO4 |
| ⓘ | Uranophane | 9.AK.15 | Ca(UO2)2(SiO3OH)2 · 5H2O |
| ⓘ | Cordierite | 9.CJ.10 | (Mg,Fe)2Al3(AlSi5O18) |
| ⓘ | Augite | 9.DA.15 | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| ⓘ | Actinolite | 9.DE.10 | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| ⓘ | Prehnite | 9.DP.20 | Ca2Al2Si3O10(OH)2 |
| ⓘ | Muscovite var. Sericite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
| ⓘ | 9.EC.15 | KAl2(AlSi3O10)(OH)2 | |
| ⓘ | Saponite | 9.EC.45 | Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O |
| ⓘ | Chamosite | 9.EC.55 | (Fe2+)5Al(Si,Al)4O10(OH,O)8 |
| ⓘ | Hisingerite | 9.ED.10 | Fe3+2(Si2O5)(OH)4 · 2H2O |
| ⓘ | Lizardite | 9.ED.15 | Mg3(Si2O5)(OH)4 |
| Unclassified | |||
| ⓘ | 'Apatite' | - | Ca5(PO4)3(Cl/F/OH) |
| ⓘ | 'Serpentine Subgroup' | - | D3[Si2O5](OH)4 |
| ⓘ | 'Garnet Group' | - | X3Z2(SiO4)3 |
| ⓘ | 'Pyroxene Group' | - | ADSi2O6 |
| ⓘ | 'Plagioclase' | - | (Na,Ca)[(Si,Al)AlSi2]O8 |
| ⓘ | 'Biotite' | - | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| ⓘ | 'Fayalite-Forsterite Series' | - | |
| ⓘ | 'Amphibole Supergroup' | - | AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| ⓘ | 'var. Uralite' | - | AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| ⓘ | 'Chlorite Group' | - | |
| ⓘ | 'Monazite' ? | - | REE(PO4) |
| ⓘ | 'Olivine Group' | - | M2SiO4 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| H | ⓘ Akaganeite | (Fe3+,Ni2+)8(OH,O)16Cl1.25 · nH2O |
| H | ⓘ Amphibole Supergroup | AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| H | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| H | ⓘ Chamosite | (Fe2+)5Al(Si,Al)4O10(OH,O)8 |
| H | ⓘ Goethite | α-Fe3+O(OH) |
| H | ⓘ Hibbingite | Fe22+(OH)3Cl |
| H | ⓘ Hisingerite | Fe23+(Si2O5)(OH)4 · 2H2O |
| H | ⓘ Lizardite | Mg3(Si2O5)(OH)4 |
| H | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| H | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
| H | ⓘ Saponite | Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O |
| H | ⓘ Amphibole Supergroup var. Uralite | AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| H | ⓘ Uranophane | Ca(UO2)2(SiO3OH)2 · 5H2O |
| H | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| H | ⓘ Serpentine Subgroup | D3[Si2O5](OH)4 |
| H | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
| C | Carbon | |
| C | ⓘ Graphite | C |
| O | Oxygen | |
| 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 Supergroup | AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| O | ⓘ Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| O | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| O | ⓘ Chamosite | (Fe2+)5Al(Si,Al)4O10(OH,O)8 |
| O | ⓘ Cordierite | (Mg,Fe)2Al3(AlSi5O18) |
| O | ⓘ Fayalite | Fe22+SiO4 |
| O | ⓘ Forsterite | Mg2SiO4 |
| O | ⓘ Goethite | α-Fe3+O(OH) |
| O | ⓘ Hibbingite | Fe22+(OH)3Cl |
| O | ⓘ Hisingerite | Fe23+(Si2O5)(OH)4 · 2H2O |
| O | ⓘ Ilmenite | Fe2+TiO3 |
| O | ⓘ Lizardite | Mg3(Si2O5)(OH)4 |
| O | ⓘ Magnetite | Fe2+Fe23+O4 |
| O | ⓘ Monazite | REE(PO4) |
| O | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| O | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
| O | ⓘ Romarchite | SnO |
| O | ⓘ Saponite | Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O |
| O | ⓘ Amphibole Supergroup var. Uralite | AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| O | ⓘ Uraninite | UO2 |
| O | ⓘ Uranophane | Ca(UO2)2(SiO3OH)2 · 5H2O |
| O | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| O | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| O | ⓘ Pyroxene Group | ADSi2O6 |
| O | ⓘ Garnet Group | X3Z2(SiO4)3 |
| O | ⓘ Serpentine Subgroup | D3[Si2O5](OH)4 |
| O | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
| O | ⓘ Olivine Group | M2SiO4 |
| F | Fluorine | |
| F | ⓘ Amphibole Supergroup | AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| F | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| F | ⓘ Amphibole Supergroup var. Uralite | AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| F | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
| Na | Sodium | |
| Na | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Mg | Magnesium | |
| Mg | ⓘ Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| Mg | ⓘ Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| Mg | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Mg | ⓘ Cordierite | (Mg,Fe)2Al3(AlSi5O18) |
| Mg | ⓘ Forsterite | Mg2SiO4 |
| Mg | ⓘ Lizardite | Mg3(Si2O5)(OH)4 |
| Mg | ⓘ Saponite | Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O |
| Al | Aluminium | |
| Al | ⓘ Amphibole Supergroup | AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| Al | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Al | ⓘ Chamosite | (Fe2+)5Al(Si,Al)4O10(OH,O)8 |
| Al | ⓘ Cordierite | (Mg,Fe)2Al3(AlSi5O18) |
| Al | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Al | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
| Al | ⓘ Saponite | Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O |
| Al | ⓘ Amphibole Supergroup var. Uralite | AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| Al | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| Al | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Si | Silicon | |
| Si | ⓘ Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| Si | ⓘ Amphibole Supergroup | AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| Si | ⓘ Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| Si | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Si | ⓘ Chamosite | (Fe2+)5Al(Si,Al)4O10(OH,O)8 |
| Si | ⓘ Cordierite | (Mg,Fe)2Al3(AlSi5O18) |
| Si | ⓘ Fayalite | Fe22+SiO4 |
| Si | ⓘ Forsterite | Mg2SiO4 |
| Si | ⓘ Hisingerite | Fe23+(Si2O5)(OH)4 · 2H2O |
| Si | ⓘ Lizardite | Mg3(Si2O5)(OH)4 |
| Si | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Si | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
| Si | ⓘ Saponite | Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O |
| Si | ⓘ Amphibole Supergroup var. Uralite | AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| Si | ⓘ Uranophane | Ca(UO2)2(SiO3OH)2 · 5H2O |
| Si | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| Si | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Si | ⓘ Pyroxene Group | ADSi2O6 |
| Si | ⓘ Garnet Group | X3Z2(SiO4)3 |
| Si | ⓘ Serpentine Subgroup | D3[Si2O5](OH)4 |
| Si | ⓘ Olivine Group | M2SiO4 |
| P | Phosphorus | |
| P | ⓘ Monazite | REE(PO4) |
| P | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
| S | Sulfur | |
| S | ⓘ Bornite | Cu5FeS4 |
| S | ⓘ Pyrite var. Bravoite | (Fe,Ni)S2 |
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Cobaltite | CoAsS |
| S | ⓘ Covellite | CuS |
| S | ⓘ Cubanite | CuFe2S3 |
| S | ⓘ Cuprorhodsite | (Cu1+0.5Fe3+0.5)Rh23+S4 |
| S | ⓘ Digenite | Cu9S5 |
| S | ⓘ Galena | PbS |
| S | ⓘ Gersdorffite | NiAsS |
| S | ⓘ Haycockite | Cu4Fe5S8 |
| S | ⓘ Marcasite | FeS2 |
| S | ⓘ Mooihoekite | Cu9Fe9S16 |
| S | ⓘ Pentlandite | (NixFey)Σ9S8 |
| S | ⓘ Pyrite | FeS2 |
| S | ⓘ Pyrrhotite | Fe1-xS |
| S | ⓘ Sphalerite | ZnS |
| S | ⓘ Tetradymite | Bi2Te2S |
| S | ⓘ Troilite | FeS |
| S | ⓘ Yarrowite | Cu9S8 |
| Cl | Chlorine | |
| Cl | ⓘ Akaganeite | (Fe3+,Ni2+)8(OH,O)16Cl1.25 · nH2O |
| Cl | ⓘ Amphibole Supergroup | AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| Cl | ⓘ Hibbingite | Fe22+(OH)3Cl |
| Cl | ⓘ Amphibole Supergroup var. Uralite | AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| Cl | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
| K | Potassium | |
| K | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| K | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| K | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| Ca | Calcium | |
| Ca | ⓘ Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| Ca | ⓘ Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| Ca | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
| Ca | ⓘ Saponite | Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O |
| Ca | ⓘ Uranophane | Ca(UO2)2(SiO3OH)2 · 5H2O |
| Ca | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Ca | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
| Ti | Titanium | |
| Ti | ⓘ Amphibole Supergroup | AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| Ti | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Ti | ⓘ Ilmenite | Fe2+TiO3 |
| Ti | ⓘ Amphibole Supergroup var. Uralite | AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| Fe | Iron | |
| 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 | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Fe | ⓘ Bornite | Cu5FeS4 |
| Fe | ⓘ Pyrite var. Bravoite | (Fe,Ni)S2 |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Chamosite | (Fe2+)5Al(Si,Al)4O10(OH,O)8 |
| Fe | ⓘ Cordierite | (Mg,Fe)2Al3(AlSi5O18) |
| Fe | ⓘ Cubanite | CuFe2S3 |
| Fe | ⓘ Cuprorhodsite | (Cu1+0.5Fe3+0.5)Rh23+S4 |
| Fe | ⓘ Fayalite | Fe22+SiO4 |
| Fe | ⓘ Goethite | α-Fe3+O(OH) |
| Fe | ⓘ Haycockite | Cu4Fe5S8 |
| Fe | ⓘ Hibbingite | Fe22+(OH)3Cl |
| Fe | ⓘ Hisingerite | Fe23+(Si2O5)(OH)4 · 2H2O |
| Fe | ⓘ Ilmenite | Fe2+TiO3 |
| Fe | ⓘ Löllingite | FeAs2 |
| Fe | ⓘ Magnetite | Fe2+Fe23+O4 |
| Fe | ⓘ Marcasite | FeS2 |
| Fe | ⓘ Mooihoekite | Cu9Fe9S16 |
| Fe | ⓘ Pentlandite | (NixFey)Σ9S8 |
| Fe | ⓘ Pyrite | FeS2 |
| Fe | ⓘ Pyrrhotite | Fe1-xS |
| Fe | ⓘ Safflorite | (Co,Ni,Fe)As2 |
| Fe | ⓘ Saponite | Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O |
| Fe | ⓘ Troilite | FeS |
| Co | Cobalt | |
| Co | ⓘ Cobaltite | CoAsS |
| Co | ⓘ Safflorite | (Co,Ni,Fe)As2 |
| Ni | Nickel | |
| Ni | ⓘ Akaganeite | (Fe3+,Ni2+)8(OH,O)16Cl1.25 · nH2O |
| Ni | ⓘ Pyrite var. Bravoite | (Fe,Ni)S2 |
| Ni | ⓘ Gersdorffite | NiAsS |
| Ni | ⓘ Maucherite | Ni11As8 |
| Ni | ⓘ Nickeline | NiAs |
| Ni | ⓘ Pentlandite | (NixFey)Σ9S8 |
| Ni | ⓘ Rammelsbergite | NiAs2 |
| Ni | ⓘ Safflorite | (Co,Ni,Fe)As2 |
| Cu | Copper | |
| Cu | ⓘ Bornite | Cu5FeS4 |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
| Cu | ⓘ Covellite | CuS |
| Cu | ⓘ Cubanite | CuFe2S3 |
| Cu | ⓘ Cuprorhodsite | (Cu1+0.5Fe3+0.5)Rh23+S4 |
| Cu | ⓘ Copper | Cu |
| Cu | ⓘ Digenite | Cu9S5 |
| Cu | ⓘ Haycockite | Cu4Fe5S8 |
| Cu | ⓘ Mooihoekite | Cu9Fe9S16 |
| Cu | ⓘ Yarrowite | Cu9S8 |
| Zn | Zinc | |
| Zn | ⓘ Sphalerite | ZnS |
| As | Arsenic | |
| As | ⓘ Cobaltite | CoAsS |
| As | ⓘ Gersdorffite | NiAsS |
| As | ⓘ Löllingite | FeAs2 |
| As | ⓘ Maucherite | Ni11As8 |
| As | ⓘ Nickeline | NiAs |
| As | ⓘ Rammelsbergite | NiAs2 |
| As | ⓘ Safflorite | (Co,Ni,Fe)As2 |
| As | ⓘ Sperrylite | PtAs2 |
| Rh | Rhodium | |
| Rh | ⓘ Cuprorhodsite | (Cu1+0.5Fe3+0.5)Rh23+S4 |
| Pd | Palladium | |
| Pd | ⓘ Stibiopalladinite | Pd5Sb2 |
| Ag | Silver | |
| Ag | ⓘ Silver | Ag |
| Sn | Tin | |
| Sn | ⓘ Romarchite | SnO |
| Sb | Antimony | |
| Sb | ⓘ Stibiopalladinite | Pd5Sb2 |
| Te | Tellurium | |
| Te | ⓘ Tetradymite | Bi2Te2S |
| Pt | Platinum | |
| Pt | ⓘ Sperrylite | PtAs2 |
| Pb | Lead | |
| Pb | ⓘ Galena | PbS |
| Bi | Bismuth | |
| Bi | ⓘ Bismuth | Bi |
| Bi | ⓘ Tetradymite | Bi2Te2S |
| U | Uranium | |
| U | ⓘ Uraninite | UO2 |
| U | ⓘ Uranophane | Ca(UO2)2(SiO3OH)2 · 5H2O |
Localities in this Region
- Minnesota
- Cook County
- Duluth Complex
- Lake County
- St. Louis County
Other Regions, Features and Areas that Intersect
North America PlateTectonic Plate
- Mid-continent DomainDomain
- Superior DomainDomain
USA
- Minnesota
- Duluth Complex
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
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for access and that you are aware of all safety precautions necessary.
References
Duluth Complex, Minnesota, USA