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:
McClure Mountain, Iron Mountain Complex, Fremont Co., Colorado, USA

Oldest recorded age at locality: 540
Youngest recorded age at locality: 506

mindat Locality ID: 6125
mindat URL: http://www.mindat.org/loc-6125.html

Tectonic Settings:

Total number of sublocalities beneath "McClure Mountain, Iron Mountain Complex, Fremont Co., Colorado, USA": 3
Total number of bottom-level sublocalities: 3

Number of Child Localities: 3
Child Localities:
Brown Lava Lode Occurrence (Serpant; Pink Lady)
Cabin Group Carbonatite
McClure Gulch Carbonatite Dike

Latitude: 38°20'30"N
Longitude: 105°27'"W
Decimal Degree (lat, lon): 38.341666666667,-105.45
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 Ce Cl Cu F Fe H K Mg Na O P S Si Sr Th Ti Zn 

Elements from minerals reported directly at this locality: Al C Ca Ce Cl Fe H K Mg Na O Si Sr Ti 

Structural Groups for minerals in this locality: 
AmphiboleAncyliteAragoniteBaryteCalciteCancriniteCancrinite-sodaliteChalcopyriteClayDiaspore
LepidocrociteMicaNonePerovskitePyritePyroxeneRhabdophaneRutileSodaliteSphalerite
SpinelTitaniteTridymiteZircon

25 IMA Minerals at location:
Aegirine  (*)Ancylite-(Ce)  (*)Ankerite  (*)Baryte  (*)Brockite  (*)
Calcite  (*)Cancrinite  (*)Chalcopyrite  (*)Cryolite  (*)Diaspore  (*)
Dolomite  (*)Kaersutite  (*)Lepidocrocite  (*)Nepheline  (*)Phlogopite  (*)
Pyrite  (*)Riebeckite  (*)Rutile  (*)Sodalite  (*)Sphalerite  (*)
Strontianite  (*)Synchysite-(Ce)  (*)Thorite  (*)Titanite  (*)Ulvöspinel  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Aegirine  (*)PyroxeneNaFe3+Si2O654050601022
Ancylite-(Ce)  (*)AncyliteCeSr(CO3)2(OH)·H2O540506092
Ankerite  (*)NoneCa(Fe2+,Mg)(CO3)254050611884713092
Baryte  (*)BaryteBa(SO4)540506118847111547
Brockite  (*)Rhabdophane(Ca,Th,Ce)(PO4)·H2O540506118847148
Calcite  (*)CalciteCa(CO3)540506118847127770
Cancrinite  (*)Cancrinite(Na,Ca,   )8(Al6Si6)O24(CO3,SO4)2·2H2O5405061188471232
Chalcopyrite  (*)ChalcopyriteCuFeS2540506118847127198
Cryolite  (*)PerovskiteNa2NaAlF6540506118847150
Diaspore  (*)DiasporeAlO(OH)5405061188471481
Dolomite  (*)NoneCaMg(CO3)254050611884719895
Kaersutite  (*)AmphiboleNaCa2(Mg3AlTi4+)(Si6Al2)O22O25405060179
Lepidocrocite  (*)LepidocrociteFe3+O(OH)5405061188471581
Nepheline  (*)TridymiteNa3K(Al4Si4O16)5405060884
Phlogopite  (*)Mica ClayKMg3(AlSi3O10)(OH)254050602273
Pyrite  (*)PyriteFeS2540506118847139462
Riebeckite  (*)Amphibole   Na2(Fe2+3Fe3+2)Si8O22(OH)25405060375
Rutile  (*)RutileTiO254050611884715614
Sodalite  (*)Cancrinite-sodalite SodaliteNa4(Si3Al3)O12Cl5405060444
Sphalerite  (*)SphaleriteZnS540506118847121482
Strontianite  (*)AragoniteSr(CO3)5405061188471589
Synchysite-(Ce)  (*)NoneCaCe(CO3)2F5405062188470,188471232
Thorite  (*)ZirconTh(SiO4)5405062188469,1884711006
Titanite  (*)TitaniteCaTi(SiO4)O50650604899
Ulvöspinel  (*)SpinelFe2+2TiO45405061188471120


Locality Notes from all Ages at Locality:
Age IDLocality Notes
Jen_0000893MAGMATIC STYLE: Dykes. ASSOCIATED SILICATE ROCKS: Pyroxenite, dunite, gabbro, ijolite, nepheline syenite, trachyte, phonolite, lamprophyre, fenite.
Jen_0000894MAGMATIC STYLE: Dykes. ASSOCIATED SILICATE ROCKS: Pyroxenite, dunite, gabbro, ijolite, nepheline syenite, trachyte, phonolite, lamprophyre, fenite.
Jen_0000895MAGMATIC STYLE: Dykes. ASSOCIATED SILICATE ROCKS: Pyroxenite, dunite, gabbro, ijolite, nepheline syenite, trachyte, phonolite, lamprophyre, fenite.
Jen_0000896MAGMATIC STYLE: Dykes. ASSOCIATED SILICATE ROCKS: Pyroxenite, dunite, gabbro, ijolite, nepheline syenite, trachyte, phonolite, lamprophyre, fenite.
Jen_0000897MAGMATIC STYLE: Dykes. ASSOCIATED SILICATE ROCKS: Pyroxenite, dunite, gabbro, ijolite, nepheline syenite, trachyte, phonolite, lamprophyre, fenite.
Jen_0000898MAGMATIC STYLE: Dykes. ASSOCIATED SILICATE ROCKS: Pyroxenite, dunite, gabbro, ijolite, nepheline syenite, trachyte, phonolite, lamprophyre, fenite.


6 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_0000893528528528K-Ar amphibole, biotite     122863McClure Gulch Carbonatite Dike, McClure Mountain, Iron Mountain Complex, Fremont Co., Colorado, USAMcClure MountainWoolley and Kjarsgaard (2008)10.4095/225115GSCOF5796 
Jen_0000894520520520K-Ar       122863McClure Gulch Carbonatite Dike, McClure Mountain, Iron Mountain Complex, Fremont Co., Colorado, USAMcClure MountainWoolley and Kjarsgaard (2008)10.4095/225115GSCOF5796 
Jen_0000895508508508K-Ar       122863McClure Gulch Carbonatite Dike, McClure Mountain, Iron Mountain Complex, Fremont Co., Colorado, USAMcClure MountainWoolley and Kjarsgaard (2008)10.4095/225115GSCOF5796 
Jen_0000896521521521Rb-Sr       122863McClure Gulch Carbonatite Dike, McClure Mountain, Iron Mountain Complex, Fremont Co., Colorado, USAMcClure MountainWoolley and Kjarsgaard (2008)10.4095/225115GSCOF5796 
Jen_0000897540530535±5Rb-Sr       122863McClure Gulch Carbonatite Dike, McClure Mountain, Iron Mountain Complex, Fremont Co., Colorado, USAMcClure MountainWoolley and Kjarsgaard (2008)10.4095/225115GSCOF5796 
Jen_0000898506506506fission-track titanite   Titanite  122863McClure Gulch Carbonatite Dike, McClure Mountain, Iron Mountain Complex, Fremont Co., Colorado, USAMcClure MountainWoolley and Kjarsgaard (2008)10.4095/225115GSCOF5796 

SampleSource LocalityReference URL

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