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:
Otish Mountains U Deposit, Otish Mts, Baie-James, Nord-du-Québec, Québec, Canada

Oldest recorded age at locality: 306
Youngest recorded age at locality: 306

mindat Locality ID: 16069
mindat URL: http://www.mindat.org/loc-16069.html

Tectonic Settings:

Total number of sublocalities beneath "Otish Mountains U Deposit, Otish Mts, Baie-James, Nord-du-Québec, Québec, Canada": 0
Total number of bottom-level sublocalities: 0

Latitude: 52°12'30"N
Longitude: 71°3'"W
Decimal Degree (lat, lon): 52.208333333333,-71.05
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 Au Ba Bi C Ca Ce Cu F Fe H Mg Mn Mo Na O P Pb S Se Si Te Ti U V W Y Zr 

Elements from minerals reported directly at this locality: Al Au Ba Bi C Ca Ce Cu F Fe H Mg Mn Mo Na O P Pb S Se Si Te Ti U V W Y Zr 

Structural Groups for minerals in this locality: 
AllaniteArsenicBaryteBournoniteBranneriteBruciteCalciteChalcopyriteClinozoisiteCopper
CorundumCovelliteDescloiziteDigeniteEpidoteFeldsparFluoriteFritzscheiteMarcasiteMeneghinite
MolybdeniteMonaziteNonePhosphuranylitePyriteQuartzRaspiteRocksaltRutileSchoepite
SpinelTetradymiteWatkinsoniteZircon

43 IMA Minerals at location:
Aikinite  (*)Albite  (*)Allanite-(Ce)  (*)Baryte  (*)Bismuth  (*)
Brannerite  (*)Brucite  (*)Calcite  (*)Chalcopyrite  (*)Clausthalite  (*)
Coffinite  (*)Covellite  (*)Dewindtite  (*)Digenite  (*)Dolomite  (*)
Epidote  (*)Fluorite  (*)Fourmarierite  (*)Francevillite  (*)Galena  (*)
Gold  (*)Hematite  (*)Kasolite  (*)Magnetite  (*)Marcasite  (*)
Molybdenite  (*)Monazite-(Ce)  (*)Mottramite  (*)Poubaite  (*)Pyrite  (*)
Pyrobelonite  (*)Quartz  (*)Raspite  (*)Rutile  (*)Siderite  (*)
Skippenite  (*)Součekite  (*)Uraninite  (*)Uranophane-α  (*)Watkinsonite  (*)
Wittichenite  (*)Xenotime-(Y)  (*)Zircon  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Aikinite  (*)MeneghiniteCuPbBiS33063060315
Albite  (*)FeldsparNa(AlSi3O8)30630608803
Allanite-(Ce)  (*)Allanite EpidoteCaCe(Al2Fe2+)[Si2O7][SiO4]O(OH)3063060706
Baryte  (*)BaryteBa(SO4)306306011547
Bismuth  (*)ArsenicBi30630601966
Brannerite  (*)BranneriteUTi2O63063060248
Brucite  (*)BruciteMg(OH)23063060462
Calcite  (*)CalciteCa(CO3)306306027770
Chalcopyrite  (*)ChalcopyriteCuFeS2306306027198
Clausthalite  (*)RocksaltPbSe3063060281
Coffinite  (*)ZirconU(SiO4)·nH2O3063060566
Covellite  (*)CovelliteCuS30630604165
Dewindtite  (*)PhosphuranyliteH2Pb3(UO2)6O4(PO4)4·12H2O306306082
Digenite  (*)DigeniteCu1.8S30630601027
Dolomite  (*)NoneCaMg(CO3)230630609895
Epidote  (*)Epidote ClinozoisiteCa2(Al2Fe3+)[Si2O7][SiO4]O(OH)30630608173
Fluorite  (*)FluoriteCaF230630609617
Fourmarierite  (*)SchoepitePb1-xO3-2x(UO2)4(OH)4+2x·4H2O306306061
Francevillite  (*)FritzscheiteBa(UO2)2(VO4)2·5H2O306306043
Galena  (*)RocksaltPbS306306024243
Gold  (*)CopperAu306306030554
Hematite  (*)CorundumFe2O3306306014640
Kasolite  (*)NonePb(UO2)(SiO4)·H2O3063060198
Magnetite  (*)SpinelFe2+Fe3+2O4306306014899
Marcasite  (*)MarcasiteFeS230630605674
Molybdenite  (*)MolybdeniteMoS230630605800
Monazite-(Ce)  (*)MonaziteCe(PO4)3063060945
Mottramite  (*)DescloizitePbCu(VO4)(OH)3063060362
Poubaite  (*)TetradymitePbBi2(Se,Te,S)430630606
Pyrite  (*)PyriteFeS2306306039462
Pyrobelonite  (*)DescloizitePbMn2+VO4(OH)306306021
Quartz  (*)QuartzSiO2306306061156
Raspite  (*)RaspitePb(WO4)306306026
Rutile  (*)RutileTiO230630605614
Siderite  (*)CalciteFe(CO3)30630606417
Skippenite  (*)TetradymiteBi2Se2Te30630606
Součekite  (*)BournoniteCuPbBi(S,Se)330630606
Uraninite  (*)FluoriteUO230630602718
Uranophane-α  (*)NoneCa(UO2)2(SiO3OH)2·5H2O3063060890
Watkinsonite  (*)WatkinsonitePbCu2Bi4(Se,S)830630605
Wittichenite  (*)NoneCu3BiS33063060297
Xenotime-(Y)  (*)ZirconY(PO4)3063060939
Zircon  (*)ZirconZr(SiO4)30630605251


Locality Notes from all Ages at Locality:
Age IDLocality Notes
Giersdorf_00000991Uranium vein-type deposits located in the Otish Mountains basin (Quebec) are associated with strongly albitized doleritic dykes and sills. Two periods of mineralization were recognized. The first, contemporaneous with the albitization, consists of brannerite and uraninite. The second, separated from the previous by tectonic movements, is characterized by carbonate gangue (dolomite), and a complex association of selenides, tellurides and sulfides including: skippenite, watkinsonite, poubaite, soucekite, clausthalite, aikinite, wittichenite, molybdenite, pyrite, chalcopyrite, galena, digenite, covellite, electrum, native bismuth, and several unidentified bismuth selenides-tellurides.


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
Giersdorf_00000991306306306 The second cycle, which is weaker, produced pitchblende and coffinite mineralization in a calcite gangue. Its age is approximately 306 Ma and seems to correspondto the mineralizatione vent well known in other areas, as for example in the Athabasca basin    Calcite, Coffinite, Galena, Hematite, Marcasite, PyriteU16069Otish Mountains U Deposit, Otish Mts, Baie-James, Nord-du-Québec, Québec, CanadaOtish Mountains U DepositJohan et al. (1987) CM25_625The age for the second mineralization event of the Otish Mountains which corresponds well to other nearby areas.

SampleSource LocalityReference URL

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