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:
Redding (Reading), Fairfield Co., Connecticut, USA

Oldest recorded age at locality: 369
Youngest recorded age at locality: 333.5

mindat Locality ID: 13427
mindat URL: http://www.mindat.org/loc-13427.html

Tectonic Settings:

Total number of sublocalities beneath "Redding (Reading), Fairfield Co., Connecticut, USA": 6
Total number of bottom-level sublocalities: 4

Number of Child Localities: 4
Child Localities:
Branchville
Redding Glen (Redding Ridge)
State Route 57 Zeolite Occurrence (Georgetown Locality; Connerie's Store)
West Redding Grossular Locality

Latitude: 41°16'53"N
Longitude: 73°25'17"W
Decimal Degree (lat, lon): 41.281388888889,-73.421388888889
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 B Ba Be Bi C Ca Cd Cu F Fe H K Li Mg Mn Mo Na Nb O P Pb S Si Ta Ti U Y Zn Zr 

Elements from minerals reported directly at this locality: C Ca Cu Fe H Mg O S Si 

Structural Groups for minerals in this locality: 
AmorphousAmphiboleApatiteAragoniteArrojaditeArsenicArseniosideriteAutuniteBerylBismutite
CalciteChabaziteChalcopyriteChildreniteClayClinozoisiteColumbiteCorundumDiasporeEpidote
FairfielditeFeldsparFillowiteFluoriteGarnetHarmotomeHureauliteMarcasiteMelanteriteMeta-autunite
MicaNatroliteNoneNot in a structural groupOlivinePhenakitePhosphuranylitePyritePyroxeneQuartz
ReddingiteScheeliteSmectite-vermiculiteSphaleriteSpinelStauroliteTitaniteTourmalineVivianiteWagnerite
WurtziteZircon

73 IMA Minerals at location:
Actinolite  (*)Albite  (*)Almandine  (*)Annite  (*)Autunite  (*)
Bertrandite  (*)Beryl  (*)Bismuth  (*)Bismutite  (*)Calcite  (*)
Cerussite  (*)Chabazite-Ca  (*)Chalcopyrite  (*)Clinozoisite  (*)Columbite-(Fe)  (*)
Dickinsonite-(KMnNa)  (*)Diopside  (*)Elbaite  (*)Eosphorite  (*)Eucryptite  (*)
Fairfieldite  (*)Fillowite  (*)Fluorapatite  (*)Fluorite  (*)Forsterite  (*)
Goethite  (*)Graphite  (*)Greenockite  (*)Grossular  (*)Harmotome  (*)
Hematite  (*)Hureaulite  (*)Hydroxylapatite  (*)Ilmenite  (*)Lithiophilite  (*)
Magnetite  (*)Marcasite  (*)Melanterite  (*)Mesolite  (*)Meta-autunite  (*)
Metaswitzerite  (*)Metatorbernite  (*)Microcline  (*)Mitridatite  (*)Montebrasite  (*)
Montmorillonite  (*)Muscovite  (*)Natrolite  (*)Natrophilite  (*)Opal  (*)
Phosphuranylite  (*)Purpurite  (*)Pyrite  (*)Quartz  (*)Reddingite  (*)
Rhodochrosite  (*)Samarskite-(Y)  (*)Schorl  (*)Sillimanite  (*)Sphalerite  (*)
Spodumene  (*)Staurolite  (*)Tantalite-(Mn)  (*)Titanite  (*)Torbernite  (*)
Tremolite  (*)Triphylite  (*)Triploidite  (*)Uraninite  (*)Uranophane-α  (*)
Vivianite  (*)Wulfenite  (*)Zircon  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Actinolite  (*)Amphibole   Ca2(Mg4.5-2.5Fe2+0.5-2.5)Si8O22(OH)2369333.503419
Albite  (*)FeldsparNa(AlSi3O8)3693634198763,198764,198766,1987678803
Almandine  (*)GarnetFe2+3Al2(SiO4)33693633198763,198764,1987652353
Annite  (*)Mica ClayKFe2+3(AlSi3O10)(OH)23693631198763356
Autunite  (*)AutuniteCa(UO2)2(PO4)2·10-12H2O36936311987631272
Bertrandite  (*)Not in a structural groupBe4Si2O7(OH)23693631198763606
Beryl  (*)BerylBe3Al2Si6O1836936311987634286
Bismuth  (*)ArsenicBi36936311987631966
Bismutite  (*)BismutiteBi2O2(CO3)3693631198763716
Calcite  (*)CalciteCa(CO3)3693632198763,19876727770
Cerussite  (*)AragonitePb(CO3)36936311987634979
Chabazite-Ca  (*)ChabaziteCa2[Al4Si8O24]·13H2O3693631198763310
Chalcopyrite  (*)ChalcopyriteCuFeS2369333.5027198
Clinozoisite  (*)Clinozoisite EpidoteCa2Al3[Si2O7][SiO4]O(OH)11987671025
Columbite-(Fe)  (*)ColumbiteFe2+Nb2O63693631198763518
Dickinsonite-(KMnNa)  (*)ArrojaditeK(NaMn)CaNa3AlMn13(PO4)12(OH)2369363119876326
Diopside  (*)PyroxeneCaMgSi2O611987674135
Elbaite  (*)TourmalineNa(Al1.5Li1.5)Al6(Si6O18)(BO3)3(OH)3(OH)3693631198763520
Eosphorite  (*)ChildreniteMn2+Al(PO4)(OH)2·H2O3693631198763128
Eucryptite  (*)PhenakiteLiAlSiO4369363119876329
Fairfieldite  (*)FairfielditeCa2Mn2+(PO4)2·2H2O369363119876372
Fillowite  (*)FillowiteNa3CaMn2+11(PO4)9369363119876314
Fluorapatite  (*)ApatiteCa5(PO4)3F36936311987632740
Fluorite  (*)FluoriteCaF236936311987639617
Forsterite  (*)OlivineMg2(SiO4)369333.501188
Goethite  (*)DiasporeFeO(OH)36936311987637437
Graphite  (*)NoneC369333.502812
Greenockite  (*)WurtziteCdS3693631198763717
Grossular  (*)GarnetCa3Al2(SiO4)311987671544
Harmotome  (*)HarmotomeBa2(Si12Al4)O32·12H2O1198766290
Hematite  (*)CorundumFe2O3369363119876314640
Hureaulite  (*)HureauliteMn2+5(PO3OH)2(PO4)2·4H2O3693631198763125
Hydroxylapatite  (*)ApatiteCa5(PO4)3OH3693631198763367
Ilmenite  (*)CorundumFe2+Ti4+O336936311987635433
Lithiophilite  (*)OlivineLiMn2+(PO4)3693631198763155
Magnetite  (*)SpinelFe2+Fe3+2O4369363119876314899
Marcasite  (*)MarcasiteFeS23693632198763,1987665674
Melanterite  (*)MelanteriteFe(SO4)·7H2O1198766915
Mesolite  (*)NatroliteNa2Ca2(Si9Al6)O30·8H2O1198766425
Meta-autunite  (*)Meta-autuniteCa(UO2)2(PO4)2·6H2O3693631198763388
Metaswitzerite  (*)NoneMn2+3(PO4)2·4H2O369363119876322
Metatorbernite  (*)NoneCu(UO2)2(PO4)2·8H2O3693631198763443
Microcline  (*)FeldsparK(AlSi3O8)3693632198763,1987644924
Mitridatite  (*)ArseniosideriteCa2Fe3+3O2(PO4)3·3H2O3693631198763129
Montebrasite  (*)NoneLiAl(PO4)(OH)3693631198763200
Montmorillonite  (*)Clay Smectite-vermiculite(Na,Ca)0.3(Al,Mg)2Si4O10(OH)2·nH2O36936311987631508
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)23693662198763,19876417380
Natrolite  (*)NatroliteNa2(Si3Al2)O10·2H2O11987661236
Natrophilite  (*)OlivineNaMn2+(PO4)36936311987635
Opal  (*)AmorphousSiO2·nH2O36936311987632994
Phosphuranylite  (*)PhosphuranyliteKCa(H3O)3(UO2)7(PO4)4O4·8H2O3693631198763182
Purpurite  (*)OlivineMn3+(PO4)369363119876380
Pyrite  (*)PyriteFeS2369363119876339462
Quartz  (*)QuartzSiO23693633198763,198764,19876761156
Reddingite  (*)ReddingiteMn2+3(PO4)2·3H2O369363119876324
Rhodochrosite  (*)CalciteMn(CO3)36936311987631711
Samarskite-(Y)  (*)ColumbiteYFe3+Nb2O83693631198763353
Schorl  (*)TourmalineNaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)3693632198763,1987642705
Sillimanite  (*)Not in a structural groupAl2SiO511987641516
Sphalerite  (*)SphaleriteZnS369363119876321482
Spodumene  (*)PyroxeneLiAlSi2O63693631198763688
Staurolite  (*)StauroliteFe2+2Al9Si4O23(OH)1198765978
Tantalite-(Mn)  (*)ColumbiteMn2+Ta2O63693631198763211
Titanite  (*)TitaniteCaTi(SiO4)O3693632198763,1987674899
Torbernite  (*)NoneCu(UO2)2(PO4)2·12H2O36936311987631059
Tremolite  (*)Amphibole   Ca2(Mg5.0-4.5Fe2+0.0-0.5)Si8O22(OH)2369333.502562
Triphylite  (*)OlivineLiFe2+(PO4)3693631198763313
Triploidite  (*)WagneriteMn2+2(PO4)(OH)369363119876329
Uraninite  (*)FluoriteUO236736311987632718
Uranophane-α  (*)NoneCa(UO2)2(SiO3OH)2·5H2O3693631198763890
Vivianite  (*)VivianiteFe2+3(PO4)2·8H2O3693631198763636
Wulfenite  (*)ScheelitePbMoO436936311987631655
Zircon  (*)ZirconZr(SiO4)36936311987635251


3 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
Alexandra-0194337.5333.5335.5 ± 2.0Ar-ArAge of pegmatitemuscovite14Dw3  Muscovite  275695Branchville, Redding (Reading), Fairfield Co., Connecticut, USABranchvilleBradley et al. (2016)10.3749/canmin.1600035CM54_945 
Alexandra-0318367363367-363U-PbAge of pegmatiteuraninite   Uraninite  6816Fillow Quarry (Branchville Quarry; Branchville Mica Mine; Smith Mine), Branchville, Redding (Reading), Fairfield Co., Connecticut, USABranchvilleSpooner and Fairbairn (1970)10.1130/0016-7606(1970)81[3663:RORAOG]2.0.CO;2GSAB81_3663 
Alexandra-0319369366369-366K-ArAge of pegmatitemuscovite   Muscovite  6816Fillow Quarry (Branchville Quarry; Branchville Mica Mine; Smith Mine), Branchville, Redding (Reading), Fairfield Co., Connecticut, USABranchvilleSpooner and Fairbairn (1970)10.1130/0016-7606(1970)81[3663:RORAOG]2.0.CO;2GSAB81_3663 

SampleSource LocalityReference URL
R040066Redding (Reading), Fairfield Co., Connecticut, USAhttps://rruff.info/R040066

All locality data graciously provided by mindat.org

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