Mineral Evolution Database
Created and maintained by the Mineral Evolution Project in partnership with RRUFF and mindat.
Mineral locality data provided by mindat.org



The Mineral Evolution database is currently under development.

The goal of this page is to present localities at which the mineral is found, and estimates of the oldest possible geologic age of the minerals at these localities.


Locality Name:
Yogo Gulch, Yogo District, Little Belt Mts, Judith Basin Co., Montana, USA


mindat Locality ID: 3872
mindat URL: http://www.mindat.org/loc-3872.html

Tectonic Settings:

Total number of sublocalities beneath "Yogo Gulch, Yogo District, Little Belt Mts, Judith Basin Co., Montana, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 46°52'35"N
Longitude: 110°18'27"W
Decimal Degree (lat, lon): 46.876388888889,-110.3075

AThis mineral is Anthropogenic.
GThis mineral is directly dated.
BThis mineral is reported as having this age.
YThis mineral is using an age reported as an element mineralization period.
OThis mineral is using an age calculated from all data at the locality.
RThe age displayed for this mineral originates from a different, non-child locality.
PThe age displayed for this mineral is the range of ages for this mineral at all of this locality's children.
This mineral's age has not yet been recorded.

This Mineral list contains entries from this locality, including sub-localities. Minerals in bold are reported by mindat.org as occurring directly at this locality, and do not occur at any children (sublocalities) of this locality.

Elements at this locality, including sub-localities: Al Ba C Ca Fe H K Mg Na O S Si Zr 

Elements from minerals reported directly at this locality: Al Ba C Ca Fe H K Mg Na O S Si Zr 

Structural Groups for minerals in this locality: 
AnalcimeBaryteCalciteClayCorundumGarnetMicaNonePyritePyroxene
SpinelZircon

16 IMA Minerals at location:
Aegirine  (*)Analcime  (*)Ankerite  (*)Augite  (*)Baryte  (*)
Calcite  (*)Corundum  (*)Diopside  (*)Dolomite  (*)Hematite  (*)
Magnetite  (*)Phlogopite  (*)Pyrite  (*)Pyrope  (*)Spinel  (*)
Zircon  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Aegirine  (*)PyroxeneNaFe3+Si2O601022
Analcime  (*)AnalcimeNa(AlSi2O6)·H2O01627
Ankerite  (*)NoneCa(Fe2+,Mg)(CO3)203092
Augite  (*)Pyroxene(Ca,Mg,Fe)2Si2O602060
Baryte  (*)BaryteBa(SO4)011547
Calcite  (*)CalciteCa(CO3)027770
Corundum  (*)CorundumAl2O301797
Diopside  (*)PyroxeneCaMgSi2O604135
Dolomite  (*)NoneCaMg(CO3)209895
Hematite  (*)CorundumFe2O3014640
Magnetite  (*)SpinelFe2+Fe3+2O4014899
Phlogopite  (*)Mica ClayKMg3(AlSi3O10)(OH)202273
Pyrite  (*)PyriteFeS2039462
Pyrope  (*)GarnetMg3Al2(SiO4)30341
Spinel  (*)SpinelMgAl2O401934
Zircon  (*)ZirconZr(SiO4)05251



No ages have been assigned to this locality yet.

SampleSource LocalityReference URL
R060020Yogo Gulch, Yogo District, Little Belt Mts, Judith Basin Co., Montana, USAhttps://rruff.info/R060020


All locality data graciously provided by mindat.org

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