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:
Vermiculite Mine (MRDS - 10013422), Gem Park Complex, Fremont Co., Colorado, USA

Oldest recorded age at locality: 551
Youngest recorded age at locality: 551

mindat Locality ID: 6204
mindat URL: http://www.mindat.org/loc-6204.html

Tectonic Settings:

Total number of sublocalities beneath "Vermiculite Mine (MRDS - 10013422), Gem Park Complex, Fremont Co., Colorado, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 38°16'1"N
Longitude: 105°32'44"W
Decimal Degree (lat, lon): 38.266944444444,-105.54555555556
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 As Ba C Ca Ce Cl Cu F Fe H K Mg Na Nb Ni O P S Si Sr Ta Th Ti 

Elements from minerals reported directly at this locality: Al As Ba C Ca Ce Cl Cu F Fe H K Mg Na Nb Ni O P S Si Sr Th Ti 

Structural Groups for minerals in this locality: 
AmphiboleAnalcimeAncyliteAragoniteBaryteBrookiteCalciteCancrinite-sodaliteClayColumbite
CorundumFluoriteMicaMonaziteNatroliteNickelineNoneNot in a structural groupPerovskitePyrite
PyroxeneQuartzRutileSmectite-vermiculiteSodaliteSpinel

34 IMA Minerals at location:
Actinolite  (*)Aegirine  (*)Analcime  (*)Anatase  (*)Ancylite-(Ce)  (*)
Ankerite  (*)Augite  (*)Baryte  (*)Bornite  (*)Brookite  (*)
Calcite  (*)Dolomite  (*)Fersmite  (*)Fluorite  (*)Ilmenite  (*)
Lueshite  (*)Magnesio-riebeckite  (*)Magnetite  (*)Monazite-(Ce)  (*)Natrolite  (*)
Natroniobite  (*)Nickeline  (*)Perovskite  (*)Phlogopite  (*)Pyrite  (*)
Pyrrhotite  (*)Quartz  (*)Riebeckite  (*)Rutile  (*)Sodalite  (*)
Strontianite  (*)Thorianite  (*)Tremolite  (*)Vermiculite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Actinolite  (*)Amphibole   Ca2(Mg4.5-2.5Fe2+0.5-2.5)Si8O22(OH)255155103419
Aegirine  (*)PyroxeneNaFe3+Si2O655155101022
Analcime  (*)AnalcimeNa(AlSi2O6)·H2O55155101627
Anatase  (*)Not in a structural groupTiO255155102162
Ancylite-(Ce)  (*)AncyliteCeSr(CO3)2(OH)·H2O551551092
Ankerite  (*)NoneCa(Fe2+,Mg)(CO3)255155103092
Augite  (*)Pyroxene(Ca,Mg,Fe)2Si2O655155102060
Baryte  (*)BaryteBa(SO4)551551011547
Bornite  (*)NoneCu5FeS455155105516
Brookite  (*)BrookiteTiO25515510700
Calcite  (*)CalciteCa(CO3)551551027770
Dolomite  (*)NoneCaMg(CO3)255155109895
Fersmite  (*)ColumbiteCaNb2O6551551083
Fluorite  (*)FluoriteCaF255155109617
Ilmenite  (*)CorundumFe2+Ti4+O355155105433
Lueshite  (*)PerovskiteNaNbO3551551016
Magnesio-riebeckite  (*)Amphibole   Na2(Mg3Fe3+2)Si8O22(OH)2551551093
Magnetite  (*)SpinelFe2+Fe3+2O4551551014899
Monazite-(Ce)  (*)MonaziteCe(PO4)5515510945
Natrolite  (*)NatroliteNa2(Si3Al2)O10·2H2O55155101236
Natroniobite  (*)PerovskiteNaNbO355155105
Nickeline  (*)NickelineNiAs5515510633
Perovskite  (*)PerovskiteCaTiO35515510495
Phlogopite  (*)Mica ClayKMg3(AlSi3O10)(OH)255155102273
Pyrite  (*)PyriteFeS2551551039462
Pyrrhotite  (*)NickelineFe7S855155109056
Quartz  (*)QuartzSiO2551551061156
Riebeckite  (*)Amphibole   Na2(Fe2+3Fe3+2)Si8O22(OH)25515510375
Rutile  (*)RutileTiO255155105614
Sodalite  (*)Cancrinite-sodalite SodaliteNa4(Si3Al3)O12Cl5515510444
Strontianite  (*)AragoniteSr(CO3)5515510589
Thorianite  (*)FluoriteThO25515510236
Tremolite  (*)Amphibole   Ca2(Mg5.0-4.5Fe2+0.0-0.5)Si8O22(OH)255155102562
Vermiculite  (*)Clay Smectite-vermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4·8H2O5515510652


Locality Notes from all Ages at Locality:
Age IDLocality Notes
Jen_0000904MAGMATIC STYLE: Dykes and small plug (Pine Creek). ASSOCIATED SILICATE ROCKS: Pyroxenite, gabbro, nepheline syenite, lamprophyre, fenite.


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_0000904551551551K-Ar riebeckite  YesRiebeckite  24296Gem Park Complex, Fremont Co., Colorado, USAGem ParkWoolley and Kjarsgaard (2008)10.4095/225115GSCOF5796 

SampleSource LocalityReference URL

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