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:
Wellpinit, Stevens Co., Washington, USA

Oldest recorded age at locality: 51.5
Youngest recorded age at locality: 50.5

mindat Locality ID: 23827
mindat URL: http://www.mindat.org/loc-23827.html

Tectonic Settings:

Total number of sublocalities beneath "Wellpinit, Stevens Co., Washington, USA": 6
Total number of bottom-level sublocalities: 6

Number of Child Localities: 6
Child Localities:
Bair Prospect
Lucky Charm Prospect
Midnite Mine (Midnight Mine; Boyd Lease)
Rattlesnake Mountain
Roadcuts
Section 13 Prospect

Latitude: 47°53'59"N
Longitude: 118°3'2"W
Decimal Degree (lat, lon): 47.899722222222,-118.05055555556
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 C Ca Cu F Fe H K Mg Mo Na O P S Si U Zn 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
AmorphousAmphiboleAndalusiteArsenopyriteAutuniteCalciteChalcopyriteClayClinozoisiteEpidote
FluoriteGarnetKaoliniteMarcasiteMeta-autuniteMicaMolybdeniteNonePhosphuranylitePyrite
PyroxeneQuartzSmectite-vermiculiteSphaleriteSpinelStilbiteVesuvianiteWollastoniteZippeiteZircon

35 IMA Minerals at location:
Andalusite  (*)Anthophyllite  (*)Arsenopyrite  (*)Autunite  (*)Calcite  (*)
Chalcopyrite  (*)Coffinite  (*)Delvauxite  (*)Diopside  (*)Epidote  (*)
Fluorite  (*)Graphite  (*)Grossular  (*)Hisingerite  (*)Kaolinite  (*)
Liebigite  (*)Magnetite  (*)Marcasite  (*)Meta-autunite  (*)Molybdenite  (*)
Montmorillonite  (*)Muscovite  (*)Phlogopite  (*)Phosphuranylite  (*)Pyrite  (*)
Quartz  (*)Sklodowskite  (*)Sphalerite  (*)Stilbite-Na  (*)Torbernite  (*)
Uraninite  (*)Uranophane-α  (*)Vesuvianite  (*)Wollastonite  (*)Zippeite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Andalusite  (*)AndalusiteAl2SiO551.550.512862201310
Anthophyllite  (*)Amphibole   Mg2Mg5Si8O22(OH)21286223718
Arsenopyrite  (*)ArsenopyriteFeAsS51.550.512862209052
Autunite  (*)AutuniteCa(UO2)2(PO4)2·10-12H2O51.550.53286218,286219,2862201272
Calcite  (*)CalciteCa(CO3)51.550.5128622027770
Chalcopyrite  (*)ChalcopyriteCuFeS251.550.5128622027198
Coffinite  (*)ZirconU(SiO4)·nH2O51.550.51286220566
Delvauxite  (*)AmorphousCaFe3+4(PO4)2(OH)8·4-5H2O51.550.5128622041
Diopside  (*)PyroxeneCaMgSi2O651.550.512862204135
Epidote  (*)Epidote ClinozoisiteCa2(Al2Fe3+)[Si2O7][SiO4]O(OH)51.550.512862208173
Fluorite  (*)FluoriteCaF212862229617
Graphite  (*)NoneC51.550.512862202812
Grossular  (*)GarnetCa3Al2(SiO4)312862211544
Hisingerite  (*)Kaolinite ClayFe2Si2O5(OH)4·2H2O51.550.51286220144
Kaolinite  (*)Clay KaoliniteAl2Si2O5(OH)451.550.512862205591
Liebigite  (*)NoneCa2(UO2)(CO3)3·11H2O51.550.5128622078
Magnetite  (*)SpinelFe2+Fe3+2O451.550.5128622014899
Marcasite  (*)MarcasiteFeS251.550.512862205674
Meta-autunite  (*)Meta-autuniteCa(UO2)2(PO4)2·6H2O51.550.51286220388
Molybdenite  (*)MolybdeniteMoS251.550.512862205800
Montmorillonite  (*)Clay Smectite-vermiculite(Na,Ca)0.3(Al,Mg)2Si4O10(OH)2·nH2O51.550.512862201508
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)251.550.5128622017380
Phlogopite  (*)Mica ClayKMg3(AlSi3O10)(OH)251.550.512862202273
Phosphuranylite  (*)PhosphuranyliteKCa(H3O)3(UO2)7(PO4)4O4·8H2O51.550.51286220182
Pyrite  (*)PyriteFeS251.550.5128622039462
Quartz  (*)QuartzSiO251.550.5128622061156
Sklodowskite  (*)NoneMg(UO2)2(SiO3OH)2·6H2O51.550.5128622056
Sphalerite  (*)SphaleriteZnS51.550.5128622021482
Stilbite-Na  (*)StilbiteNa9(Si27Al9)O72·28H2O51.550.5128622015
Torbernite  (*)NoneCu(UO2)2(PO4)2·12H2O51.550.512862201059
Uraninite  (*)FluoriteUO251.550.53286218,286220,2862232718
Uranophane-α  (*)NoneCa(UO2)2(SiO3OH)2·5H2O51.550.52286220,286223890
Vesuvianite  (*)Vesuvianite(Ca,Na)19(Al,Mg,Fe)13(SiO4)10(Si2O7)4(OH,F,O)1051.550.52286220,2862211395
Wollastonite  (*)WollastoniteCaSiO351.550.512862201247
Zippeite  (*)ZippeiteK2[(UO2)4(SO4)2O2(OH)2](H2O)451.550.51286220175


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
EG76_8951.550.551±0.5207Pb/204Pb-235U/204Pbage of high grade oreshighwhole rock   Hisingerite, Marcasite, Pyrite, SphaleriteU, S7252Midnite Mine (Midnight Mine; Boyd Lease), Wellpinit, Stevens Co., Washington, USAUranium ores at the Midnite Mine, WashingtonLudwig et al. (1981)10.2113/gsecongeo.76.1.89EG76_89Fig. 4; USGS https://mrdata.usgs.gov/geochron/show.php?labno=8956 states that the ore formed 51 Ma

SampleSource LocalityReference URL

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