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Wet Legs deposit, St. Louis County, Minnesota, USAi
Regional Level Types
Wet Legs depositDeposit
St. Louis CountyCounty
MinnesotaState
USACountry

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Latitude & Longitude (WGS84):
47° 34' 55'' North , 92° 2' 14'' West
Latitude & Longitude (decimal):
47.58222,-92.03750
GeoHash:
G#: cbqw9wh6d
GRN:
N32W46
Type:
Deposit
Köppen climate type:
Dfb : Warm-summer humid continental climate
Nearest Settlements:
PlacePopulationDistance
Hoyt Lakes2,004 (2017)10.3km
Babbitt1,519 (2017)15.7km
Aurora1,666 (2017)16.1km
Biwabik992 (2017)23.4km
McKinley128 (2017)29.1km
Mindat Locality ID:
167617
Long-form identifier:
mindat:1:2:167617:7
GUID (UUID V4):
76190461-1b05-4551-a160-a9122b4b749c


Commodities (Major) - PGE, Nickel, Copper

Development Status: Unknown

Deposit Model: 9: Duluth Cu-Ni-PGE

Host Rock Unit: South Kawishiwi Intrusion

Structure: Several Ne-Trending Normal Faults Parallel The Midcontinent Rift System Near The Margin. These Faults Formed During The Opening Of The Rift And Controlled Emplacement Of The Troctolitic And Late Intrusions.

Host Rock: Troctolite

Tectonic Structure: Middle Proterozoic Midcontinent Rift System

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


21 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:

ⓘ '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
ⓘ Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
ⓘ Bornite
Formula: Cu5FeS4
ⓘ Chalcopyrite
Formula: CuFeS2
ⓘ 'Chlorite Group'
ⓘ Cobaltite
Formula: CoAsS
ⓘ Covellite
Formula: CuS
ⓘ Cubanite
Formula: CuFe2S3
ⓘ Digenite
Formula: Cu9S5
ⓘ 'Fayalite-Forsterite Series'
ⓘ Gersdorffite
Formula: NiAsS
ⓘ Graphite
Formula: C
ⓘ Löllingite
Formula: FeAs2
ⓘ Maucherite
Formula: Ni11As8
ⓘ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ Muscovite var. Sericite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ Nickeline
Formula: NiAs
ⓘ Pentlandite
Formula: (NixFey)Σ9S8
ⓘ 'Plagioclase'
Formula: (Na,Ca)[(Si,Al)AlSi2]O8
ⓘ Prehnite
Formula: Ca2Al2Si3O10(OH)2
ⓘ Pyrrhotite
Formula: Fe1-xS
ⓘ Rammelsbergite
Formula: NiAs2
ⓘ Safflorite
Formula: (Co,Ni,Fe)As2
ⓘ 'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4
ⓘ Sperrylite
Formula: PtAs2
ⓘ Stibiopalladinite
Formula: Pd5Sb2
ⓘ Yarrowite
Formula: Cu9S8

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘ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
ⓘChalcopyrite2.CB.10aCuFeS2
ⓘCubanite2.CB.55aCuFe2S3
ⓘNickeline2.CC.05NiAs
ⓘPyrrhotite2.CC.10Fe1-xS
ⓘSperrylite2.EB.05aPtAs2
ⓘSafflorite2.EB.15a(Co,Ni,Fe)As2
ⓘRammelsbergite2.EB.15aNiAs2
ⓘLöllingite2.EB.15aFeAs2
ⓘGersdorffite2.EB.25NiAsS
ⓘCobaltite2.EB.25CoAsS
Group 9 - Silicates
ⓘAugite9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
ⓘPrehnite9.DP.20Ca2Al2Si3O10(OH)2
ⓘMuscovite9.EC.15KAl2(AlSi3O10)(OH)2
ⓘvar. Sericite9.EC.15KAl2(AlSi3O10)(OH)2
Unclassified
ⓘ'Plagioclase'-(Na,Ca)[(Si,Al)AlSi2]O8
ⓘ'Amphibole Supergroup'-AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
ⓘ'Fayalite-Forsterite Series'-
ⓘ'Amphibole Supergroup
var. Uralite'		-AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
ⓘ'Chlorite Group'-
ⓘ'Serpentine Subgroup'-D3[Si2O5](OH)4

List of minerals for each chemical element

HHydrogen
Hⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Hⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Hⓘ PrehniteCa2Al2Si3O10(OH)2
Hⓘ Amphibole Supergroup var. UraliteAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Hⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Hⓘ Serpentine SubgroupD3[Si2O5](OH)4
CCarbon
Cⓘ GraphiteC
OOxygen
Oⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Oⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Oⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Oⓘ PrehniteCa2Al2Si3O10(OH)2
Oⓘ Amphibole Supergroup var. UraliteAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Oⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Oⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Oⓘ Serpentine SubgroupD3[Si2O5](OH)4
FFluorine
Fⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)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ⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
AlAluminium
Alⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Alⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Alⓘ PrehniteCa2Al2Si3O10(OH)2
Alⓘ Amphibole Supergroup var. UraliteAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Alⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Alⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
SiSilicon
Siⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Siⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Siⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Siⓘ PrehniteCa2Al2Si3O10(OH)2
Siⓘ Amphibole Supergroup var. UraliteAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Siⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Siⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Siⓘ Serpentine SubgroupD3[Si2O5](OH)4
SSulfur
Sⓘ BorniteCu5FeS4
Sⓘ ChalcopyriteCuFeS2
Sⓘ CobaltiteCoAsS
Sⓘ CovelliteCuS
Sⓘ CubaniteCuFe2S3
Sⓘ DigeniteCu9S5
Sⓘ GersdorffiteNiAsS
Sⓘ Pentlandite(NixFey)Σ9S8
Sⓘ PyrrhotiteFe1-xS
Sⓘ YarrowiteCu9S8
ClChlorine
Clⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Clⓘ Amphibole Supergroup var. UraliteAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
KPotassium
Kⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Kⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
CaCalcium
Caⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Caⓘ PrehniteCa2Al2Si3O10(OH)2
Caⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
TiTitanium
Tiⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Tiⓘ Amphibole Supergroup var. UraliteAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
FeIron
Feⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Feⓘ BorniteCu5FeS4
Feⓘ ChalcopyriteCuFeS2
Feⓘ CubaniteCuFe2S3
Feⓘ LöllingiteFeAs2
Feⓘ Pentlandite(NixFey)Σ9S8
Feⓘ PyrrhotiteFe1-xS
Feⓘ Safflorite(Co,Ni,Fe)As2
CoCobalt
Coⓘ CobaltiteCoAsS
Coⓘ Safflorite(Co,Ni,Fe)As2
NiNickel
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ⓘ DigeniteCu9S5
Cuⓘ YarrowiteCu9S8
AsArsenic
Asⓘ CobaltiteCoAsS
Asⓘ GersdorffiteNiAsS
Asⓘ LöllingiteFeAs2
Asⓘ MaucheriteNi11As8
Asⓘ NickelineNiAs
Asⓘ RammelsbergiteNiAs2
Asⓘ Safflorite(Co,Ni,Fe)As2
Asⓘ SperrylitePtAs2
PdPalladium
Pdⓘ StibiopalladinitePd5Sb2
SbAntimony
Sbⓘ StibiopalladinitePd5Sb2
PtPlatinum
Ptⓘ SperrylitePtAs2

Other Databases

Link to USGS MRDS:10082825

Other Regions, Features and Areas containing this locality

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

Page, N.J. (1986) Descriptive model of Duluth Cu-Ni-PGE. in Cox, D.P., Singer, D.A. (editors) Mineral Deposit Models. U.S. Geological Survey Bulletin 1693: 16.
Hauck, S., Severson, M., Zanko, L., Barnes, S., Morton, P. et al. (1997) An overview of the geology and oxide, sulfide, and platinum-group element mineralization along the western and northern contacts of the Duluth Complex: Geological Society of America Special Paper: 312: 137-185.
Good, D., Borysenko, J., McBride, J., Walford, P., Smyk, M., Hollings, P., ... & Corkery, J. (2010) Cu-Ni-PGE Deposits in Mafic Intrusions of the Lake Superior Region June 24-30, 2010. 11th International Platinum Symposium.
Raič, S., Mogessie, A., Benkó, Z., Molnár, F., Hauck, S., & Severson, M. (2014, May). Arsenic-enriched Cu-Ni-PGE mineralization in Wetlegs, Duluth Complex, St. Louis County, Minnesota, USA. In EGU General Assembly Conference Abstracts (p. 3324).
Raič, S., Mogessie, A., Benkó, Z., Molnár, F., Hauck, S., Severson, M. (2015) Arsenic-rich Cu-Ni-PGE mineralization in Wetlegs, Duluth complex, St. Louis County, Minnesota, USA. The Canadian Mineralogist: 53: 105-132.
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