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:
Libby, Libby Mining District (Snowshoe Mining District), Lincoln Co., Montana, USA

Oldest recorded age at locality: 94
Youngest recorded age at locality: 94

mindat Locality ID: 251037
mindat URL: http://www.mindat.org/loc-251037.html

Tectonic Settings:

Total number of sublocalities beneath "Libby, Libby Mining District (Snowshoe Mining District), Lincoln Co., Montana, USA": 1
Total number of bottom-level sublocalities: 1

Number of Child Localities: 1
Child Localities:
Rainy Creek Mine (W. R. Grace Mine)

Latitude: 48°23'14"N
Longitude: 115°33'22"W
Decimal Degree (lat, lon): 48.387222222222,-115.55611111111
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 Cu F Fe H K Mg Na O P Pb S Si Sr Ti Zn 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
AllophaneAmphiboleApatiteAragoniteBaryteCalciteChalcopyriteClayCorrensiteFeldspar
FluoriteNickelineNonePyritePyroxeneQuartzRocksaltRutileSerpentineSmectite-vermiculite
SphaleriteSpinelTalcTitanite

33 IMA Minerals at location:
Aegirine  (*)Aegirine-augite  (*)Albite  (*)Augite  (*)Baryte  (*)
Calcite  (*)Celestine  (*)Chalcopyrite  (*)Chrysocolla  (*)Chrysotile  (*)
Diopside  (*)Dolomite  (*)Fluorapatite  (*)Fluorite  (*)Galena  (*)
Hydrobiotite  (*)Magnesio-arfvedsonite  (*)Magnesio-riebeckite  (*)Magnetite  (*)Microcline  (*)
Orthoclase  (*)Pyrite  (*)Pyrrhotite  (*)Quartz  (*)Richterite  (*)
Rutile  (*)Sphalerite  (*)Strontianite  (*)Talc  (*)Titanite  (*)
Tremolite  (*)Vermiculite  (*)Winchite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Aegirine  (*)PyroxeneNaFe3+Si2O6949412305791022
Aegirine-augite  (*)Pyroxene(Ca,Na)(Fe3+,Mg,Fe2+)Si2O694941230579286
Albite  (*)FeldsparNa(AlSi3O8)949412305798803
Augite  (*)Pyroxene(Ca,Mg,Fe)2Si2O6949412305792060
Baryte  (*)BaryteBa(SO4)9494123057911547
Calcite  (*)CalciteCa(CO3)9494123057927770
Celestine  (*)BaryteSr(SO4)949412305791252
Chalcopyrite  (*)ChalcopyriteCuFeS29494123057927198
Chrysocolla  (*)Allophane(Cu2-xAlx)H2-xSi2O5(OH)4·nH2O949412305793531
Chrysotile  (*)Serpentine ClayMg3Si2O5(OH)494941230579951
Diopside  (*)PyroxeneCaMgSi2O6949412305794135
Dolomite  (*)NoneCaMg(CO3)2949412305799895
Fluorapatite  (*)ApatiteCa5(PO4)3F949412305792740
Fluorite  (*)FluoriteCaF2949412305799617
Galena  (*)RocksaltPbS9494123057924243
Hydrobiotite  (*)Corrensite ClayK(Mg,Fe2+)6(Si,Al)8O20(OH)4·nH2O9494123057949
Magnesio-arfvedsonite  (*)AmphiboleNaNa2(Mg4Fe3+)Si8O22(OH)29494123057979
Magnesio-riebeckite  (*)Amphibole   Na2(Mg3Fe3+2)Si8O22(OH)29494123057993
Magnetite  (*)SpinelFe2+Fe3+2O49494123057914899
Microcline  (*)FeldsparK(AlSi3O8)949412305794924
Orthoclase  (*)FeldsparK(AlSi3O8)949412305792349
Pyrite  (*)PyriteFeS29494123057939462
Pyrrhotite  (*)NickelineFe7S8949412305799056
Quartz  (*)QuartzSiO29494123057961156
Richterite  (*)AmphiboleNa(NaCa)Mg5Si8O22(OH)294941230579148
Rutile  (*)RutileTiO2949412305795614
Sphalerite  (*)SphaleriteZnS9494123057921482
Strontianite  (*)AragoniteSr(CO3)94941230579589
Talc  (*)Clay TalcMg3Si4O10(OH)2949412305793337
Titanite  (*)TitaniteCaTi(SiO4)O949412305794899
Tremolite  (*)Amphibole   Ca2(Mg5.0-4.5Fe2+0.0-0.5)Si8O22(OH)2949412305792562
Vermiculite  (*)Clay Smectite-vermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4·8H2O94941230579652
Winchite  (*)Amphibole   (NaCa)(Mg4Al)Si8O22(OH)29494123057951


Locality Notes from all Ages at Locality:
Age IDLocality Notes
Jen_0000702ASSOCIATED SILICATE ROCKS: Pyroxenite, biotitite, nepheline syenite, syenite, quartz syenite.


1 Ages assigned to this locality:

Excel IDMax Age (Ma)Min Age (Ma)Age as listed in referenceDating MethodAge InterpretPrioritized?Sample SourceSample NumRun NumAge from other LocalityDated MineralMinerals explicitely stated as having this ageAge applies to these ElementsMinDat Locality IDDated Locality (Max Age)Location as listed in referenceReferenceReference DOIReference IDAge Notes
Jen_0000702949494Rb-Sr biotite     29899Rainy Creek Mine (W. R. Grace Mine), Libby, Libby Mining District (Snowshoe Mining District), Lincoln Co., Montana, USARainy CreekWoolley and Kjarsgaard (2008)10.4095/225115GSCOF5796 

SampleSource LocalityReference URL
R050485Libby, Libby Mining District (Snowshoe Mining District), Lincoln Co., Montana, USAhttps://rruff.info/R050485

All locality data graciously provided by mindat.org

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