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:
Seal Lake Alkaline Complex (Letitia Lake), Labrador, Newfoundland And Labrador, Canada

Oldest recorded age at locality: 1600
Youngest recorded age at locality: 541

mindat Locality ID: 25760
mindat URL: http://www.mindat.org/loc-25760.html

Tectonic Settings:

Total number of sublocalities beneath "Seal Lake Alkaline Complex (Letitia Lake), Labrador, Newfoundland And Labrador, Canada": 4
Total number of bottom-level sublocalities: 4

Number of Child Localities: 4
Child Localities:
Mann 1 (Letitia Lake)
Mann 2 (Ten Mile Lake)
Michelin Deposit
Two Tom Lake Prospect

Latitude: 54°13'15"N
Longitude: 62°22'14"W
Decimal Degree (lat, lon): 54.220833333333,-62.370555555556
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 Ba Be C Ca Ce Cl F Fe H K Li Mg Mn Na Nb O P Pb S Si Sr Th Ti U Zn Zr 

Elements from minerals reported directly at this locality: Be Ca H Na O Si Ti 

Structural Groups for minerals in this locality: 
AllaniteAmphiboleApatiteAstrophylliteBaryteCalciteCatapleiiteCeriteClayClinozoisite
CorundumEpidoteEudialyteFeldsparFluoriteHarmotomeJoaquiniteMicaMonaziteNeptunite
NoneNot in a structural groupPectolitePerovskitePyritePyroxeneQuartzRocksaltSapphirineSmectite-vermiculite
SphaleriteSpinelTitaniteTripliteZircon

51 IMA Minerals at location:
Aegirine  (*)Aegirine-augite  (*)Aenigmatite  (*)Albite  (*)Allanite-(Ce)  (*)
Anatase  (*)Arfvedsonite  (*)Astrophyllite  (*)Augite  (*)Barylite  (*)
Baryte  (*)Barytolamprophyllite  (*)Britholite-(Ce)  (*)Calcite  (*)Catapleiite  (*)
Epididymite  (*)Epidote  (*)Eudialyte  (*)Eudidymite  (*)Fluorapatite  (*)
Fluorite  (*)Galena  (*)Harmotome  (*)Hematite  (*)Hydroxycalciopyrochlore  (*)
Ilmenite  (*)Joaquinite-(Ce)  (*)Lamprophyllite  (*)Loparite-(Ce)  (*)Lorenzenite  (*)
Magnetite  (*)Microcline  (*)Monazite-(Ce)  (*)Muscovite  (*)Neptunite  (*)
Niobophyllite  (*)Nontronite  (*)Orthoclase  (*)Pectolite  (*)Perovskite  (*)
Pyrite  (*)Quartz  (*)Riebeckite  (*)Rosenbuschite  (*)Sphalerite  (*)
Titanite  (*)Triplite  (*)Ussingite  (*)Veblenite  (*)Whitlockite  (*)
Zircon  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Aegirine  (*)PyroxeneNaFe3+Si2O61600541430873,30874,30875,308761022
Aegirine-augite  (*)Pyroxene(Ca,Na)(Fe3+,Mg,Fe2+)Si2O6130874286
Aenigmatite  (*)SapphirineNa4[Fe2+10Ti2]O4[Si12O36]1600541230873,30874133
Albite  (*)FeldsparNa(AlSi3O8)1600541330873,30874,308758803
Allanite-(Ce)  (*)Allanite EpidoteCaCe(Al2Fe2+)[Si2O7][SiO4]O(OH)1600541130873706
Anatase  (*)Not in a structural groupTiO216005411308732162
Arfvedsonite  (*)AmphiboleNaNa2(Fe2+4Fe3+)Si8O22(OH)21600541230873,30874295
Astrophyllite  (*)AstrophylliteK2NaFe2+7Ti2(Si4O12)2O2(OH)4F1600541130873161
Augite  (*)Pyroxene(Ca,Mg,Fe)2Si2O61600541230873,308742060
Barylite  (*)NoneBaBe2Si2O71600541330873,30874,3087633
Baryte  (*)BaryteBa(SO4)160054113087311547
Barytolamprophyllite  (*)None(BaK)Ti2Na3Ti(Si2O7)2O2(OH)2160054113087321
Britholite-(Ce)  (*)Apatite(Ce,Ca)5(SiO4)3(OH)1600541130873115
Calcite  (*)CalciteCa(CO3)160054113087327770
Catapleiite  (*)CatapleiiteNa2Zr(Si3O9)·2H2O130876113
Epididymite  (*)Not in a structural groupNa2Be2Si6O15·H2O1600541070
Epidote  (*)Epidote ClinozoisiteCa2(Al2Fe3+)[Si2O7][SiO4]O(OH)16005411308738173
Eudialyte  (*)EudialyteNa15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)21600541230873,30874182
Eudidymite  (*)NoneNa2Be2Si6O15·H2O1600541330873,30874,3087642
Fluorapatite  (*)ApatiteCa5(PO4)3F16005411308732740
Fluorite  (*)FluoriteCaF216005411308739617
Galena  (*)RocksaltPbS1600541230873,3087424243
Harmotome  (*)HarmotomeBa2(Si12Al4)O32·12H2O1600541130873290
Hematite  (*)CorundumFe2O3160054113087314640
Hydroxycalciopyrochlore  (*)None(Ca,Na,U,   )2(Nb,Ti)2O6(OH)13087410
Ilmenite  (*)CorundumFe2+Ti4+O316005411308735433
Joaquinite-(Ce)  (*)JoaquiniteNaBa2Fe2+Ti2Ce2(Si4O12)2O2(OH)·H2O160054113087311
Lamprophyllite  (*)None(SrNa)Ti2Na3Ti(Si2O7)2O2(OH)213087463
Loparite-(Ce)  (*)Perovskite(Na,Ce,Sr)(Ce,Th)(Ti,Nb)2O6160054113087357
Lorenzenite  (*)NoneNa2Ti2O3(Si2O6)1600541230873,3087482
Magnetite  (*)SpinelFe2+Fe3+2O4160054113087314899
Microcline  (*)FeldsparK(AlSi3O8)1308744924
Monazite-(Ce)  (*)MonaziteCe(PO4)130874945
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)2160054113087317380
Neptunite  (*)NeptuniteKNa2LiFe2+2Ti2Si8O2413321332230873,3087449
Niobophyllite  (*)AstrophylliteK2NaFe2+7(Nb,Ti)2(Si4O12)2O2(OH)4(O,F)1600541330873,30874,308768
Nontronite  (*)Clay Smectite-vermiculiteNa0.3Fe3+2(Si,Al)4O10(OH)2·nH2O1600541130873471
Orthoclase  (*)FeldsparK(AlSi3O8)16005411308732349
Pectolite  (*)PectoliteNaCa2Si3O8(OH)1600541230873,30874363
Perovskite  (*)PerovskiteCaTiO316005410495
Pyrite  (*)PyriteFeS2160054113087339462
Quartz  (*)QuartzSiO21600541230873,3087461156
Riebeckite  (*)Amphibole   Na2(Fe2+3Fe3+2)Si8O22(OH)21600541130873375
Rosenbuschite  (*)NoneCa6Zr2Na6ZrTi(Si2O7)4(OF)2F413087642
Sphalerite  (*)SphaleriteZnS1600541230873,3087421482
Titanite  (*)TitaniteCaTi(SiO4)O16005411308734899
Triplite  (*)TripliteMn2+2(PO4)F1600541130873233
Ussingite  (*)NoneNa2AlSi3O8(OH)160054113087324
Veblenite  (*)Not in a structural groupK2   2Na(Fe2+5Fe3+4Mn7   )Nb3Ti(Si2O7)2(Si8O22)2O6(OH)10(H2O)31308741
Whitlockite  (*)CeriteCa9Mg(PO3OH)(PO4)61600541130873104
Zircon  (*)ZirconZr(SiO4)134113131308735251


4 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
Grew_Li_2019_0075133213321332      Neptunite 210522Mann 1 (Letitia Lake), Seal Lake Alkaline Complex (Letitia Lake), Labrador, Newfoundland And Labrador, CanadaMann 1, Letitia Lake, Seal Lake alkaline complex, Labrador, Newfoundland and Labrador, CanadaMiller et al. (1997)10.1016/S0301-9268(96)00024-1PR81_67 
IGCCA_1986_0001122111571189 ± 32Rb-Srhost rockwhole rock     210522Mann 1 (Letitia Lake), Seal Lake Alkaline Complex (Letitia Lake), Labrador, Newfoundland And Labrador, CanadaStrange Lake Alkaline ComplexDuthou (1986) IGCCA_1986 
NDMER81-4_1_0001134113131327 ± 14U-Pbhost rockzircon  YesZircon  210522Mann 1 (Letitia Lake), Seal Lake Alkaline Complex (Letitia Lake), Labrador, Newfoundland And Labrador, CanadaSeal Lake Alkaline ComplexThomas (1981) NDMER81-4_1 
ree-002201600541Middle Proterozoic        210522Mann 1 (Letitia Lake), Seal Lake Alkaline Complex (Letitia Lake), Labrador, Newfoundland And Labrador, CanadaLetitia Lake - Mann 1Orris and Grauch (2002) USGSOFR02_189 

SampleSource LocalityReference URL

All locality data graciously provided by mindat.org

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