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Yogo District, Little Belt Mountains, Judith Basin County, Montana, USAi
Regional Level Types
Yogo DistrictMining District
Little Belt MountainsMountain Range
Judith Basin CountyCounty
MontanaState
USACountry

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PhotosMapsSearch
05641080017272013503976.jpg
Yogo Gulch, c. 1950

Yogo Gulch, Yogo District, Little Belt Mountains, Judith Basin County, Montana, USA
05224230017272013528052.jpg
Corundum

Yogo Gulch, Yogo District, Little Belt Mountains, Judith Basin County, Montana, USA
09732720017272013538705.jpg
Corundum

Yogo Gulch, Yogo District, Little Belt Mountains, Judith Basin County, Montana, USA
05641080017272013503976.jpg
Yogo Gulch, c. 1950

Yogo Gulch, Yogo District, Little Belt Mountains, Judith Basin County, Montana, USA
05224230017272013528052.jpg
Corundum

Yogo Gulch, Yogo District, Little Belt Mountains, Judith Basin County, Montana, USA
09732720017272013538705.jpg
Corundum

Yogo Gulch, Yogo District, Little Belt Mountains, Judith Basin County, Montana, USA
05641080017272013503976.jpg
Yogo Gulch, c. 1950

Yogo Gulch, Yogo District, Little Belt Mountains, Judith Basin County, Montana, USA
05224230017272013528052.jpg
Corundum

Yogo Gulch, Yogo District, Little Belt Mountains, Judith Basin County, Montana, USA
Type:
Mining District
Mindat Locality ID:
50256
Long-form identifier:
mindat:1:2:50256:5
GUID (UUID V4):
0


30 miles west of Garnell. Au, Ag, Cu, Pb.

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

20 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 Diagram

Detailed Mineral List:

ⓘ Aegirine
Formula: NaFe3+Si2O6
ⓘ 'Amphibole Supergroup'
Formula: AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
ⓘ Analcime
Formula: Na(AlSi2O6) · H2O
ⓘ Ankerite
Formula: Ca(Fe2+,Mg)(CO3)2
ⓘ 'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
ⓘ Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
ⓘ Baryte
Formula: BaSO4
ⓘ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ Calcite
Formula: CaCO3
ⓘ 'Chlorite Group'
ⓘ 'Clinopyroxene Subgroup'
ⓘ Corundum
Formula: Al2O3
ⓘ Corundum var. Sapphire
Formula: Al2O3
Habit: up to 15mm
Colour: Bright blue
Description: Blue (Fe2+/Ti4+ charge transfer) or purple (Cr). Xenolithic.
ⓘ Diopside
Formula: CaMgSi2O6
ⓘ Dolomite
Formula: CaMg(CO3)2
ⓘ Forsterite
Formula: Mg2SiO4
ⓘ Hematite
Formula: Fe2O3
ⓘ 'Hornblende Root Name Group'
Formula: ◻Ca2(Z2+4Z3+)(AlSi7O22)(OH,F,Cl)2
ⓘ Magnetite
Formula: Fe2+Fe3+2O4
Description: With Al-rich rims. Rims pleonaste.
ⓘ Microcline
Formula: K(AlSi3O8)
ⓘ Native Gold
Formula: Au
ⓘ Nepheline
Formula: Na3K(Al4Si4O16)
ⓘ 'Orthopyroxene Subgroup'
ⓘ Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
Description: Mg-rich core. Fe/Ba-rich rims.
ⓘ 'Plagioclase'
Formula: (Na,Ca)[(Si,Al)AlSi2]O8
Description: In pyrope-cpx-plagioclase granulite xenolith.
ⓘ Pyrite
Formula: FeS2
ⓘ Pyrope
Formula: Mg3Al2(SiO4)3
Description: In pyrope-cpx-plagioclase granulite xenolith.
ⓘ 'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4
ⓘ Spinel
Formula: MgAl2O4
Description: Rims sapphire. Mixture of Al-rich material with the Yogo magma.
ⓘ Spinel var. Pleonaste
Formula: (Mg,Fe)Al2O4
Description: Rims sapphire. Mixture of Al-rich material with the Yogo magma.
ⓘ Zircon
Formula: Zr(SiO4)

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘNative Gold1.AA.05Au
Group 2 - Sulphides and Sulfosalts
ⓘPyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
ⓘMagnetite4.BB.05Fe2+Fe3+2O4
ⓘSpinel4.BB.05MgAl2O4
ⓘvar. Pleonaste4.BB.05(Mg,Fe)Al2O4
ⓘCorundum4.CB.05Al2O3
ⓘHematite4.CB.05Fe2O3
ⓘCorundum
var. Sapphire		4.CB.05Al2O3
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
ⓘAnkerite5.AB.10Ca(Fe2+,Mg)(CO3)2
ⓘDolomite5.AB.10CaMg(CO3)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘBaryte7.AD.35BaSO4
Group 9 - Silicates
ⓘForsterite9.AC.05Mg2SiO4
ⓘPyrope9.AD.25Mg3Al2(SiO4)3
ⓘZircon9.AD.30Zr(SiO4)
ⓘAugite9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
ⓘDiopside9.DA.15CaMgSi2O6
ⓘAegirine9.DA.25NaFe3+Si2O6
ⓘPhlogopite9.EC.20KMg3(AlSi3O10)(OH)2
ⓘNepheline9.FA.05Na3K(Al4Si4O16)
ⓘMicrocline9.FA.30K(AlSi3O8)
ⓘAnalcime9.GB.05Na(AlSi2O6) · H2O
Unclassified
ⓘ'Amphibole Supergroup'-AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
ⓘ'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ'Chlorite Group'-
ⓘ'Clinopyroxene Subgroup'-
ⓘ'Hornblende Root Name Group'-◻Ca2(Z2+4Z3+)(AlSi7O22)(OH,F,Cl)2
ⓘ'Plagioclase'-(Na,Ca)[(Si,Al)AlSi2]O8
ⓘ'Orthopyroxene Subgroup'-
ⓘ'Serpentine Subgroup'-D3[Si2O5](OH)4
ⓘ'Apatite'-Ca5(PO4)3(Cl/F/OH)

List of minerals for each chemical element

HHydrogen
Hⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Hⓘ AnalcimeNa(AlSi2O6) · H2O
Hⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Hⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Hⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
Hⓘ Serpentine SubgroupD3[Si2O5](OH)4
Hⓘ ApatiteCa5(PO4)3(Cl/F/OH)
CCarbon
Cⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
Cⓘ CalciteCaCO3
Cⓘ DolomiteCaMg(CO3)2
OOxygen
Oⓘ AegirineNaFe3+Si2O6
Oⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Oⓘ AnalcimeNa(AlSi2O6) · H2O
Oⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
Oⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Oⓘ BaryteBaSO4
Oⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Oⓘ CalciteCaCO3
Oⓘ CorundumAl2O3
Oⓘ DiopsideCaMgSi2O6
Oⓘ DolomiteCaMg(CO3)2
Oⓘ ForsteriteMg2SiO4
Oⓘ HematiteFe2O3
Oⓘ MagnetiteFe2+Fe23+O4
Oⓘ MicroclineK(AlSi3O8)
Oⓘ NephelineNa3K(Al4Si4O16)
Oⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Oⓘ PyropeMg3Al2(SiO4)3
Oⓘ Corundum var. SapphireAl2O3
Oⓘ SpinelMgAl2O4
Oⓘ ZirconZr(SiO4)
Oⓘ Spinel var. Pleonaste(Mg,Fe)Al2O4
Oⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
Oⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Oⓘ Serpentine SubgroupD3[Si2O5](OH)4
Oⓘ ApatiteCa5(PO4)3(Cl/F/OH)
FFluorine
Fⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Fⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Fⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
Fⓘ ApatiteCa5(PO4)3(Cl/F/OH)
NaSodium
Naⓘ AegirineNaFe3+Si2O6
Naⓘ AnalcimeNa(AlSi2O6) · H2O
Naⓘ NephelineNa3K(Al4Si4O16)
Naⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
MgMagnesium
Mgⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
Mgⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Mgⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Mgⓘ DiopsideCaMgSi2O6
Mgⓘ DolomiteCaMg(CO3)2
Mgⓘ ForsteriteMg2SiO4
Mgⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Mgⓘ PyropeMg3Al2(SiO4)3
Mgⓘ SpinelMgAl2O4
Mgⓘ Spinel var. Pleonaste(Mg,Fe)Al2O4
AlAluminium
Alⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Alⓘ AnalcimeNa(AlSi2O6) · H2O
Alⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Alⓘ CorundumAl2O3
Alⓘ MicroclineK(AlSi3O8)
Alⓘ NephelineNa3K(Al4Si4O16)
Alⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Alⓘ PyropeMg3Al2(SiO4)3
Alⓘ Corundum var. SapphireAl2O3
Alⓘ SpinelMgAl2O4
Alⓘ Spinel var. Pleonaste(Mg,Fe)Al2O4
Alⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
Alⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
SiSilicon
Siⓘ AegirineNaFe3+Si2O6
Siⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Siⓘ AnalcimeNa(AlSi2O6) · H2O
Siⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Siⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Siⓘ DiopsideCaMgSi2O6
Siⓘ ForsteriteMg2SiO4
Siⓘ MicroclineK(AlSi3O8)
Siⓘ NephelineNa3K(Al4Si4O16)
Siⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Siⓘ PyropeMg3Al2(SiO4)3
Siⓘ ZirconZr(SiO4)
Siⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
Siⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Siⓘ Serpentine SubgroupD3[Si2O5](OH)4
PPhosphorus
Pⓘ ApatiteCa5(PO4)3(Cl/F/OH)
SSulfur
Sⓘ BaryteBaSO4
Sⓘ PyriteFeS2
ClChlorine
Clⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Clⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
Clⓘ ApatiteCa5(PO4)3(Cl/F/OH)
KPotassium
Kⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Kⓘ MicroclineK(AlSi3O8)
Kⓘ NephelineNa3K(Al4Si4O16)
Kⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
CaCalcium
Caⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
Caⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Caⓘ CalciteCaCO3
Caⓘ DiopsideCaMgSi2O6
Caⓘ DolomiteCaMg(CO3)2
Caⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
Caⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Caⓘ ApatiteCa5(PO4)3(Cl/F/OH)
TiTitanium
Tiⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Tiⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
FeIron
Feⓘ AegirineNaFe3+Si2O6
Feⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
Feⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Feⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Feⓘ HematiteFe2O3
Feⓘ MagnetiteFe2+Fe23+O4
Feⓘ PyriteFeS2
Feⓘ Spinel var. Pleonaste(Mg,Fe)Al2O4
ZrZirconium
Zrⓘ ZirconZr(SiO4)
BaBarium
Baⓘ BaryteBaSO4
AuGold
Auⓘ Native GoldAu

Fossils

There are 2 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.

Occurrences61
Youngest Fossil Listed299 Ma (Carboniferous)
Oldest Fossil Listed359 Ma (Late/Upper Devonian)
Stratigraphic Units
UnitNo. OccurrencesAge
Otter1330.9 - 318.1 Ma (Carboniferous)
Madison - Lodgepole60358.9 - 298.9 Ma (Paleozoic)
Fossils from RegionClick here to show the list.
Accepted NameHierarchy Age
Aulopora
genus		Animalia : Cnidaria : Anthozoa : Auloporidae : Aulopora358.9 - 298.9 Ma
Paleozoic
Cleistopora
genus		Animalia : Cnidaria : Anthozoa : Favositidae : Cleistopora358.9 - 298.9 Ma
Paleozoic
Syringopora
genus		Animalia : Cnidaria : Anthozoa : Favositidae : Syringopora358.9 - 298.9 Ma
Paleozoic
Lithostrotion
genus		Animalia : Cnidaria : Anthozoa : Lithostrotionidae : Lithostrotion358.9 - 298.9 Ma
Paleozoic
Lithostrotionella
genus		Animalia : Cnidaria : Anthozoa : Petalaxidae : Lithostrotionella358.9 - 298.9 Ma
Paleozoic
Vesiculophyllum
genus		Animalia : Cnidaria : Anthozoa : Uraliniidae : Vesiculophyllum358.9 - 298.9 Ma
Paleozoic
Platyceras
genus		Animalia : Mollusca : Gastropoda : Platyceratidae : Platyceras358.9 - 298.9 Ma
Paleozoic
Edmondia
genus		Animalia : Mollusca : Bivalvia : Adapedonta : Edmondiidae : Edmondia358.9 - 298.9 Ma
Paleozoic
Grammysia
genus		Animalia : Mollusca : Bivalvia : Grammysiidae : Grammysia358.9 - 298.9 Ma
Paleozoic
Exochops
genus		Animalia : Arthropoda : Trilobita : Proetida : Proetidae : Exochops358.9 - 298.9 Ma
Paleozoic
Cheilotrypa
genus		Animalia : Bryozoa : Stenolaemata : Cystoporida : Fistuliporidae : Cheilotrypa358.9 - 298.9 Ma
Paleozoic
Sulcoretepora
genus		Animalia : Bryozoa : Stenolaemata : Cystoporida : Cystodictyonidae : Sulcoretepora358.9 - 298.9 Ma
Paleozoic
Rhombopora
genus		Animalia : Bryozoa : Stenolaemata : Cryptostomida : Rhabdomesidae : Rhombopora358.9 - 298.9 Ma
Paleozoic
Fenestralia
genus		Animalia : Bryozoa : Stenolaemata : Fenestralia358.9 - 298.9 Ma
Paleozoic
Chonetes
genus		Animalia : Brachiopoda : Strophomenata : Productida : Chonetidae : Chonetes358.9 - 298.9 Ma
Paleozoic
Dictyoclostus
genus		Animalia : Brachiopoda : Strophomenata : Productida : Productidae : Dictyoclostus358.9 - 298.9 Ma
Paleozoic
Leptagonia
genus		Animalia : Brachiopoda : Strophomenata : Strophomenida : Rafinesquinidae : Leptagonia358.9 - 298.9 Ma
Paleozoic
Linoproductus
genus		Animalia : Brachiopoda : Strophomenata : Productida : Linoproductidae : Linoproductus358.9 - 298.9 Ma
Paleozoic
Schuchertella
genus		Animalia : Brachiopoda : Strophomenata : Orthotetida : Schuchertellidae : Schuchertella358.9 - 298.9 Ma
Paleozoic
Camarotoechia
genus		Animalia : Brachiopoda : Rhynchonellata : Rhynchonellida : Camarotoechiidae : Camarotoechia358.9 - 298.9 Ma
Paleozoic
Composita
genus		Animalia : Brachiopoda : Rhynchonellata : Athyridida : Athyrididae : Composita358.9 - 298.9 Ma
Paleozoic
Delthyris
genus		Animalia : Brachiopoda : Rhynchonellata : Spiriferida : Delthyrididae : Delthyris358.9 - 298.9 Ma
Paleozoic
Eumetria
genus		Animalia : Brachiopoda : Rhynchonellata : Athyridida : Retziidae : Eumetria358.9 - 298.9 Ma
Paleozoic
Reticularia
genus		Animalia : Brachiopoda : Rhynchonellata : Spiriferida : Reticulariidae : Reticularia358.9 - 298.9 Ma
Paleozoic
Spirifer
genus		Animalia : Brachiopoda : Rhynchonellata : Spiriferida : Spiriferidae : Spirifer358.9 - 298.9 Ma
Paleozoic
Atrypa
genus		Animalia : Brachiopoda : Rhynchonellata : Atrypida : Atrypidae : Atrypa358.9 - 298.9 Ma
Paleozoic
Dielasma
genus		Animalia : Brachiopoda : Rhynchonellata : Terebratulida : Dielasmatidae : Dielasma358.9 - 298.9 Ma
Paleozoic
Pentremites
genus		Animalia : Echinodermata : Pentremitidae : Pentremites358.9 - 298.9 Ma
Paleozoic
Cactocrinus
genus		Animalia : Echinodermata : Crinoidea : Actinocrinitidae : Cactocrinus358.9 - 298.9 Ma
Paleozoic
Culmicrinus
genus		Animalia : Echinodermata : Crinoidea : Culmicrinus358.9 - 298.9 Ma
Paleozoic
Dinotocrinus
genus		Animalia : Echinodermata : Crinoidea : Dinotocrinus358.9 - 298.9 Ma
Paleozoic
Loxonematidae
family		Animalia : Mollusca : Gastropoda : Loxonematidae358.9 - 298.9 Ma
Paleozoic
Nautiloidea
subclass		Animalia : Mollusca : Cephalopoda : Nautiloidea358.9 - 298.9 Ma
Paleozoic
Euomphalidae
family		Animalia : Mollusca : Gastropoda : Euomphalidae358.9 - 298.9 Ma
Paleozoic
Platyceras niagarensis
species		Animalia : Mollusca : Gastropoda : Euomphalina : Platyceratidae : Platyceras : Platyceras niagarensis358.9 - 298.9 Ma
Paleozoic
Platycrinus
genus		Platycrinus358.9 - 298.9 Ma
Paleozoic
Schizophoria depressa
species		Animalia : Brachiopoda : Rhynchonellata : Orthida : Schizophoriidae : Schizophoria : Schizophoria depressa330.9 - 323.2 Ma
Carboniferous
Leptagonia analoga
species		Animalia : Brachiopoda : Strophomenata : Strophomenida : Rafinesquinidae : Leptagonia : Leptagonia analoga358.9 - 298.9 Ma
Paleozoic
Schellwienella inflata
species		Animalia : Brachiopoda : Strophomenata : Orthotetida : Pulsiidae : Schellwienella : Schellwienella inflata358.9 - 298.9 Ma
Paleozoic
Mesochorispira grimesi
species		Animalia : Brachiopoda : Rhynchonellata : Spiriferida : Spiriferidae : Mesochorispira : Mesochorispira grimesi358.9 - 298.9 Ma
Paleozoic
Fossil LocalitiesClick to show 2 fossil localities

Localities in this Region

USA

Other Regions, Features and Areas that Intersect

North AmericaContinent
North America PlateTectonic Plate

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.
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