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:
Fillow Quarry (Branchville Quarry; Branchville Mica Mine; Smith Mine), Branchville, Redding (Reading), Fairfield Co., Connecticut, USA

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

mindat Locality ID: 6816
mindat URL: http://www.mindat.org/loc-6816.html

Tectonic Settings:

Total number of sublocalities beneath "Fillow Quarry (Branchville Quarry; Branchville Mica Mine; Smith Mine), Branchville, Redding (Reading), Fairfield Co., Connecticut, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 41°16'4"N
Longitude: 73°26'21"W
Decimal Degree (lat, lon): 41.267777777778,-73.439166666667
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 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: Al B 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 

Structural Groups for minerals in this locality: 
AmorphousApatiteAragoniteArrojaditeArsenicArseniosideriteAutuniteBerylBismutiteCalcite
ChabaziteChildreniteClayColumbiteCorundumDiasporeFairfielditeFeldsparFillowiteFluorite
GarnetHureauliteMarcasiteMeta-autuniteMicaNoneNot in a structural groupOlivinePhenakitePhosphuranylite
PyritePyroxeneQuartzReddingiteScheeliteSmectite-vermiculiteSphaleriteSpinelTitaniteTourmaline
VivianiteWagneriteWurtziteZircon

59 IMA Minerals at location:
Albite  (*)Almandine  (*)Annite  (*)Autunite  (*)Bertrandite  (*)
Beryl  (*)Bismuth  (*)Bismutite  (*)Calcite  (*)Cerussite  (*)
Chabazite-Ca  (*)Columbite-(Fe)  (*)Dickinsonite-(KMnNa)  (*)Elbaite  (*)Eosphorite  (*)
Eucryptite  (*)Fairfieldite  (*)Fillowite  (*)Fluorapatite  (*)Fluorite  (*)
Goethite  (*)Greenockite  (*)Hematite  (*)Hureaulite  (*)Hydroxylapatite  (*)
Ilmenite  (*)Lithiophilite  (*)Magnetite  (*)Marcasite  (*)Meta-autunite  (*)
Metaswitzerite  (*)Metatorbernite  (*)Microcline  (*)Mitridatite  (*)Montebrasite  (*)
Montmorillonite  (*)Muscovite  (*)Natrophilite  (*)Opal  (*)Phosphuranylite  (*)
Purpurite  (*)Pyrite  (*)Quartz  (*)Reddingite  (*)Rhodochrosite  (*)
Samarskite-(Y)  (*)Schorl  (*)Sphalerite  (*)Spodumene  (*)Tantalite-(Mn)  (*)
Titanite  (*)Torbernite  (*)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
Albite  (*)FeldsparNa(AlSi3O8)36936308803
Almandine  (*)GarnetFe2+3Al2(SiO4)336936302353
Annite  (*)Mica ClayKFe2+3(AlSi3O10)(OH)23693630356
Autunite  (*)AutuniteCa(UO2)2(PO4)2·10-12H2O36936301272
Bertrandite  (*)Not in a structural groupBe4Si2O7(OH)23693630606
Beryl  (*)BerylBe3Al2Si6O1836936304286
Bismuth  (*)ArsenicBi36936301966
Bismutite  (*)BismutiteBi2O2(CO3)3693630716
Calcite  (*)CalciteCa(CO3)369363027770
Cerussite  (*)AragonitePb(CO3)36936304979
Chabazite-Ca  (*)ChabaziteCa2[Al4Si8O24]·13H2O3693630310
Columbite-(Fe)  (*)ColumbiteFe2+Nb2O63693630518
Dickinsonite-(KMnNa)  (*)ArrojaditeK(NaMn)CaNa3AlMn13(PO4)12(OH)2369363026
Elbaite  (*)TourmalineNa(Al1.5Li1.5)Al6(Si6O18)(BO3)3(OH)3(OH)3693630520
Eosphorite  (*)ChildreniteMn2+Al(PO4)(OH)2·H2O3693630128
Eucryptite  (*)PhenakiteLiAlSiO4369363029
Fairfieldite  (*)FairfielditeCa2Mn2+(PO4)2·2H2O369363072
Fillowite  (*)FillowiteNa3CaMn2+11(PO4)9369363014
Fluorapatite  (*)ApatiteCa5(PO4)3F36936302740
Fluorite  (*)FluoriteCaF236936309617
Goethite  (*)DiasporeFeO(OH)36936307437
Greenockite  (*)WurtziteCdS3693630717
Hematite  (*)CorundumFe2O3369363014640
Hureaulite  (*)HureauliteMn2+5(PO3OH)2(PO4)2·4H2O3693630125
Hydroxylapatite  (*)ApatiteCa5(PO4)3OH3693630367
Ilmenite  (*)CorundumFe2+Ti4+O336936305433
Lithiophilite  (*)OlivineLiMn2+(PO4)3693630155
Magnetite  (*)SpinelFe2+Fe3+2O4369363014899
Marcasite  (*)MarcasiteFeS236936305674
Meta-autunite  (*)Meta-autuniteCa(UO2)2(PO4)2·6H2O3693630388
Metaswitzerite  (*)NoneMn2+3(PO4)2·4H2O369363022
Metatorbernite  (*)NoneCu(UO2)2(PO4)2·8H2O3693630443
Microcline  (*)FeldsparK(AlSi3O8)36936304924
Mitridatite  (*)ArseniosideriteCa2Fe3+3O2(PO4)3·3H2O3693630129
Montebrasite  (*)NoneLiAl(PO4)(OH)3693630200
Montmorillonite  (*)Clay Smectite-vermiculite(Na,Ca)0.3(Al,Mg)2Si4O10(OH)2·nH2O36936301508
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)2369366017380
Natrophilite  (*)OlivineNaMn2+(PO4)36936305
Opal  (*)AmorphousSiO2·nH2O36936302994
Phosphuranylite  (*)PhosphuranyliteKCa(H3O)3(UO2)7(PO4)4O4·8H2O3693630182
Purpurite  (*)OlivineMn3+(PO4)369363080
Pyrite  (*)PyriteFeS2369363039462
Quartz  (*)QuartzSiO2369363061156
Reddingite  (*)ReddingiteMn2+3(PO4)2·3H2O369363024
Rhodochrosite  (*)CalciteMn(CO3)36936301711
Samarskite-(Y)  (*)ColumbiteYFe3+Nb2O83693630353
Schorl  (*)TourmalineNaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)36936302705
Sphalerite  (*)SphaleriteZnS369363021482
Spodumene  (*)PyroxeneLiAlSi2O63693630688
Tantalite-(Mn)  (*)ColumbiteMn2+Ta2O63693630211
Titanite  (*)TitaniteCaTi(SiO4)O36936304899
Torbernite  (*)NoneCu(UO2)2(PO4)2·12H2O36936301059
Triphylite  (*)OlivineLiFe2+(PO4)3693630313
Triploidite  (*)WagneriteMn2+2(PO4)(OH)369363029
Uraninite  (*)FluoriteUO236736302718
Uranophane-α  (*)NoneCa(UO2)2(SiO3OH)2·5H2O3693630890
Vivianite  (*)VivianiteFe2+3(PO4)2·8H2O3693630636
Wulfenite  (*)ScheelitePbMoO436936301655
Zircon  (*)ZirconZr(SiO4)36936305251


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 YesMuscovite  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

All locality data graciously provided by mindat.org

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