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:
Sheila I Prospect, Texas Creek Area, Fremont Co., Colorado, USA

Oldest recorded age at locality: 1693.1
Youngest recorded age at locality: 1169.1

mindat Locality ID: 113115
mindat URL: http://www.mindat.org/loc-113115.html

Tectonic Settings:

Total number of sublocalities beneath "Sheila I Prospect, Texas Creek Area, Fremont Co., Colorado, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 38°23'50"N
Longitude: 105°38'40"W
Decimal Degree (lat, lon): 38.397222222222,-105.64444444444
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: H O Si U 

Elements from minerals reported directly at this locality: H O Si U 

Structural Groups for minerals in this locality: 
FluoriteNoneZircon

2 IMA Minerals at location:
Coffinite  (*)Uraninite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Coffinite  (*)ZirconU(SiO4)·nH2O1693.11169.10566
Uraninite  (*)FluoriteUO21693.11169.102718


12 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
USGS-U-Th-Pb-01619_206_2381442.61442.61442.6206_238age of intrusionzircon   Zircon  113115Sheila I Prospect, Texas Creek Area, Fremont Co., Colorado, USA USGS-U-Th-Pb USGS-U-Th-Pb 
USGS-U-Th-Pb-01619_207_2061656.11656.11656.1207_206age of intrusionzircon   Zircon  113115Sheila I Prospect, Texas Creek Area, Fremont Co., Colorado, USA USGS-U-Th-Pb USGS-U-Th-Pb 
USGS-U-Th-Pb-01619_207_2351531.31531.31531.3207_235age of intrusionzircon   Zircon  113115Sheila I Prospect, Texas Creek Area, Fremont Co., Colorado, USA USGS-U-Th-Pb USGS-U-Th-Pb 
USGS-U-Th-Pb-01620_206_2381366.91366.91366.9206_238age of intrusionzircon   Zircon  113115Sheila I Prospect, Texas Creek Area, Fremont Co., Colorado, USA USGS-U-Th-Pb USGS-U-Th-Pb 
USGS-U-Th-Pb-01620_207_2061645.71645.71645.7207_206age of intrusionzircon   Zircon  113115Sheila I Prospect, Texas Creek Area, Fremont Co., Colorado, USA USGS-U-Th-Pb USGS-U-Th-Pb 
USGS-U-Th-Pb-01620_207_2351479.91479.91479.9207_235age of intrusionzircon   Zircon  113115Sheila I Prospect, Texas Creek Area, Fremont Co., Colorado, USA USGS-U-Th-Pb USGS-U-Th-Pb 
USGS-U-Th-Pb-01621_206_2381279.81279.81279.8206_238age of intrusionzircon   Zircon  113115Sheila I Prospect, Texas Creek Area, Fremont Co., Colorado, USA USGS-U-Th-Pb USGS-U-Th-Pb 
USGS-U-Th-Pb-01621_207_2061693.11693.11693.1207_206age of intrusionzircon   Zircon  113115Sheila I Prospect, Texas Creek Area, Fremont Co., Colorado, USA USGS-U-Th-Pb USGS-U-Th-Pb 
USGS-U-Th-Pb-01621_207_2351420.81420.81420.8207_235age of intrusionzircon   Zircon  113115Sheila I Prospect, Texas Creek Area, Fremont Co., Colorado, USA USGS-U-Th-Pb USGS-U-Th-Pb 
USGS-U-Th-Pb-01622_206_2381169.11169.11169.1206_238age of intrusionzircon   Zircon  113115Sheila I Prospect, Texas Creek Area, Fremont Co., Colorado, USA USGS-U-Th-Pb USGS-U-Th-Pb 
USGS-U-Th-Pb-01622_207_2061633.61633.61633.6207_206age of intrusionzircon   Zircon  113115Sheila I Prospect, Texas Creek Area, Fremont Co., Colorado, USA USGS-U-Th-Pb USGS-U-Th-Pb 
USGS-U-Th-Pb-01622_207_2351343.61343.61343.6207_235age of intrusionzircon   Zircon  113115Sheila I Prospect, Texas Creek Area, Fremont Co., Colorado, USA USGS-U-Th-Pb USGS-U-Th-Pb 

SampleSource LocalityReference URL

All locality data graciously provided by mindat.org

All age data...

Other copyright data...