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:
White Cloud Pegmatite, South Platte Pegmatite District, Jefferson Co., Colorado, USA

Oldest recorded age at locality: 1079
Youngest recorded age at locality: 1075

mindat Locality ID: 26279
mindat URL: http://www.mindat.org/loc-26279.html

Tectonic Settings:

Total number of sublocalities beneath "White Cloud Pegmatite, South Platte Pegmatite District, Jefferson Co., Colorado, USA": 1
Total number of bottom-level sublocalities: 2

Latitude: 39°23'44"N
Longitude: 105°10'35"W
Decimal Degree (lat, lon): 39.395555555556,-105.17638888889
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 Be C Ca Ce F Fe H K Mg Na Nb O P Si Th Y Zr 

Elements from minerals reported directly at this locality: Al Be C Ca Ce F Fe H K Mg Na Nb O P Si Th Y Zr 

Structural Groups for minerals in this locality: 
AllaniteChloriteClayCorundumEpidoteFeldsparFluoriteGadoliniteMicaNone
QuartzScheeliteTopazZircon

18 IMA Minerals at location:
Albite  (*)Allanite-(Ce)  (*)Clinochlore  (*)Fergusonite-(Y)  (*)Fluorite  (*)
Gadolinite-(Ce)  (*)Gadolinite-(Y)  (*)Hematite  (*)Kainosite-(Y)  (*)Microcline  (*)
Muscovite  (*)Quartz  (*)Synchysite-(Y)  (*)Thalénite-(Y)  (*)Thorite  (*)
Topaz  (*)Xenotime-(Y)  (*)Zircon  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Albite  (*)FeldsparNa(AlSi3O8)1079107508803
Allanite-(Ce)  (*)Allanite EpidoteCaCe(Al2Fe2+)[Si2O7][SiO4]O(OH)107910750706
Clinochlore  (*)Chlorite ClayMg5Al(AlSi3O10)(OH)81079107501756
Fergusonite-(Y)  (*)ScheeliteYNbO4107910750196
Fluorite  (*)FluoriteCaF21079107509617
Gadolinite-(Ce)  (*)GadoliniteCe2Fe2+Be2O2(SiO4)210791075031
Gadolinite-(Y)  (*)GadoliniteY2Fe2+Be2O2(SiO4)2107910750163
Hematite  (*)CorundumFe2O310791075014640
Kainosite-(Y)  (*)NoneCa2Y2(SiO3)4(CO3)·H2O10791075099
Microcline  (*)FeldsparK(AlSi3O8)1079107504924
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)210791075017380
Quartz  (*)QuartzSiO210791075061156
Synchysite-(Y)  (*)NoneCaY(CO3)2F10791075055
Thalénite-(Y)  (*)NoneY3Si3O10F10791075026
Thorite  (*)ZirconTh(SiO4)1079107501006
Topaz  (*)TopazAl2SiO4F21079107501476
Xenotime-(Y)  (*)ZirconY(PO4)107910750939
Zircon  (*)ZirconZr(SiO4)1079107505251


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
Bradley_2012_132107910751077±2Ar/Ar    Yes  3668Pikes Peak, El Paso Co., Colorado, USAPike's PeakMcCauley and Bradley (2014)10.3749/canmin.52.2.183CM52_183 

SampleSource LocalityReference URL

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