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:
Airline Railroad, East Hampton (Chatham), Middlesex Co., Connecticut, USA

Oldest recorded age at locality: 274
Youngest recorded age at locality: 272

mindat Locality ID: 237171
mindat URL: http://www.mindat.org/loc-237171.html

Tectonic Settings:

Total number of sublocalities beneath "Airline Railroad, East Hampton (Chatham), Middlesex Co., Connecticut, USA": 3
Total number of bottom-level sublocalities: 3

Number of Child Localities: 3
Child Localities:
Foothold Cleft
Linkpot Cut
Tourmaline Locality

Latitude: 41°34'32"N
Longitude: 72°29'30"W
Decimal Degree (lat, lon): 41.575555555556,-72.491666666667
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 Be C Ca Ce Cu F Fe H K Mg Na O P S Si Ti W Zn 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
AllaniteApatiteBastnäsiteBerylChalcopyriteClayDiasporeEpidoteFeldsparFluorite
GarnetGypsumHalotrichiteKaoliniteMelanteriteMicaNickelineNoneNot in a structural groupPyrite
PyroxeneQuartzScheeliteSphaleriteTitanite

25 IMA Minerals at location:
Albite  (*)Allanite-(Ce)  (*)Almandine  (*)Anorthite  (*)Augite  (*)
Bastnäsite-(Ce)  (*)Beryl  (*)Chalcopyrite  (*)Fluorapatite  (*)Fluorite  (*)
Goethite  (*)Graphite  (*)Gypsum  (*)Kaolinite  (*)Melanterite  (*)
Microcline  (*)Muscovite  (*)Pickeringite  (*)Pyrite  (*)Pyrrhotite  (*)
Quartz  (*)Scheelite  (*)Sillimanite  (*)Sphalerite  (*)Titanite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Albite  (*)FeldsparNa(AlSi3O8)27427211990588803
Allanite-(Ce)  (*)Allanite EpidoteCaCe(Al2Fe2+)[Si2O7][SiO4]O(OH)2742721199058706
Almandine  (*)GarnetFe2+3Al2(SiO4)32742722199058,1990592353
Anorthite  (*)FeldsparCa(Al2Si2O8)27427211990581036
Augite  (*)Pyroxene(Ca,Mg,Fe)2Si2O627427211990582060
Bastnäsite-(Ce)  (*)BastnäsiteCe(CO3)F2742721199058304
Beryl  (*)BerylBe3Al2Si6O1827427211990584286
Chalcopyrite  (*)ChalcopyriteCuFeS2274272119905827198
Fluorapatite  (*)ApatiteCa5(PO4)3F27427211990582740
Fluorite  (*)FluoriteCaF227427211990589617
Goethite  (*)DiasporeFeO(OH)27427211990577437
Graphite  (*)NoneC27427211990572812
Gypsum  (*)GypsumCa(SO4)·2H2O27427211990586890
Kaolinite  (*)Clay KaoliniteAl2Si2O5(OH)42742722199057,1990585591
Melanterite  (*)MelanteriteFe(SO4)·7H2O2742721199058915
Microcline  (*)FeldsparK(AlSi3O8)27427211990584924
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)2274272119905817380
Pickeringite  (*)HalotrichiteMgAl2(SO4)4·22H2O2742721199058265
Pyrite  (*)PyriteFeS22742722199057,19905839462
Pyrrhotite  (*)NickelineFe7S827427211990589056
Quartz  (*)QuartzSiO22742722199057,19905861156
Scheelite  (*)ScheeliteCa(WO4)27427211990584894
Sillimanite  (*)Not in a structural groupAl2SiO527427211990581516
Sphalerite  (*)SphaleriteZnS274272119905821482
Titanite  (*)TitaniteCaTi(SiO4)O27427211990584899


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
Bradley_2012_069274272273±1U/Pb zircon  YesZircon  6782Anderson No. 1 Mica Mine (Swanson Mine; Swanson Lithia Mine), East Hampton (Chatham), Middlesex Co., Connecticut, USAAndersonMcCauley and Bradley (2014)10.3749/canmin.52.2.183CM52_183 

SampleSource LocalityReference URL

All locality data graciously provided by mindat.org

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