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:
Tordilla Hill Prospects (Boso Lease; Nuhn Lease), Karnes Uranium District, Karnes Co., Texas, USA

Oldest recorded age at locality: 65.5
Youngest recorded age at locality: 2.6

mindat Locality ID: 27882
mindat URL: http://www.mindat.org/loc-27882.html

Tectonic Settings:

Total number of sublocalities beneath "Tordilla Hill Prospects (Boso Lease; Nuhn Lease), Karnes Uranium District, Karnes Co., Texas, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 0°0'0"N
Longitude: 0°0'0"E
Decimal Degree (lat, lon): 0,0

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: Ba C Ca Fe H K Mo O P S Se Si U V 

Elements from minerals reported directly at this locality: Ba C Ca Fe H K Mo O P S Se Si U V 

Structural Groups for minerals in this locality: 
AluniteBaryteCalciteGypsumMeta-autuniteMolybdeniteNonePyriteQuartzScheelite
SchoepiteSulphurZircon

17 IMA Minerals at location:
Baryte  (*)Calcite  (*)Carnotite  (*)Coffinite  (*)Gypsum  (*)
Ilsemannite  (*)Jarosite  (*)Meta-autunite  (*)Molybdenite  (*)Mourite  (*)
Powellite  (*)Pyrite  (*)Quartz  (*)Schoepite  (*)Selenium  (*)
Tyuyamunite  (*)Uranophane-α  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Baryte  (*)BaryteBa(SO4)65.52.6011547
Calcite  (*)CalciteCa(CO3)65.52.6027770
Carnotite  (*)NoneK2(UO2)2(VO4)2·3H2O65.52.601184
Coffinite  (*)ZirconU(SiO4)·nH2O65.52.60566
Gypsum  (*)GypsumCa(SO4)·2H2O65.52.606890
Ilsemannite  (*)NoneMo3O8·nH2O (?)65.52.60123
Jarosite  (*)AluniteKFe3+3(SO4)2(OH)665.52.602228
Meta-autunite  (*)Meta-autuniteCa(UO2)2(PO4)2·6H2O65.52.60388
Molybdenite  (*)MolybdeniteMoS265.52.605800
Mourite  (*)None(UO2)(Mo6+)5O16·5H2O65.52.602
Powellite  (*)ScheeliteCa(MoO4)65.52.60494
Pyrite  (*)PyriteFeS265.52.6039462
Quartz  (*)QuartzSiO265.52.6061156
Schoepite  (*)Schoepite(UO2)4O(OH)6(H2O)665.52.6094
Selenium  (*)SulphurSe65.52.60143
Tyuyamunite  (*)NoneCa(UO2)2(VO4)2·5-8H2O65.52.60628
Uranophane-α  (*)NoneCa(UO2)2(SiO3OH)2·5H2O65.52.60890



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
Mo-0021765.52.6      YesMolybdenite, Mourite, Powellite, IlsemanniteMo27869Karnes Uranium District, Karnes Co., Texas, USA Reynolds and Goldhaber (1978); Reynolds et al. (1982)   


SampleSource LocalityReference URL


All locality data graciously provided by mindat.org

All age data...

Other copyright data...