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:
Essex Co., Vermont, USA

Oldest recorded age at locality: 171
Youngest recorded age at locality: 171

mindat Locality ID: 22493
mindat URL: http://www.mindat.org/loc-22493.html

Tectonic Settings:

Total number of sublocalities beneath "Essex Co., Vermont, USA": 6
Total number of bottom-level sublocalities: 3

Number of Child Localities: 3
Child Localities:
Brighton
Lemington
Lunenburg

Latitude: 44°48'31"N
Longitude: 71°52'9"W
Decimal Degree (lat, lon): 44.808611111111,-71.869166666667

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 C Ca F Fe H K Mg Mo Na O S Si Ti Zr 

Elements from minerals reported directly at this locality: Al Fe O Si 

Structural Groups for minerals in this locality: 
AmphiboleAndalusiteCalciteClayFeldsparFluoriteGarnetMicaMolybdeniteNone
Not in a structural groupPyritePyroxeneQuartzSpinelTitaniteZircon

20 IMA Minerals at location:
Actinolite  (*)Albite  (*)Almandine  (*)Andalusite  (*)Anorthite  (*)
Augite  (*)Calcite  (*)Diopside  (*)Fluorite  (*)Hastingsite  (*)
Magnetite  (*)Microcline  (*)Molybdenite  (*)Muscovite  (*)Orthoclase  (*)
Pyrite  (*)Quartz  (*)Sillimanite  (*)Titanite  (*)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)21711712279006,2790073419
Albite  (*)FeldsparNa(AlSi3O8)1711712279006,2790078803
Almandine  (*)GarnetFe2+3Al2(SiO4)317117102353
Andalusite  (*)AndalusiteAl2SiO512790041310
Anorthite  (*)FeldsparCa(Al2Si2O8)17117112790061036
Augite  (*)Pyroxene(Ca,Mg,Fe)2Si2O617117112790062060
Calcite  (*)CalciteCa(CO3)171171127900627770
Diopside  (*)PyroxeneCaMgSi2O617117112790064135
Fluorite  (*)FluoriteCaF21711712279006,2790079617
Hastingsite  (*)AmphiboleNaCa2(Fe2+4Fe3+)(Si6Al2)O22(OH)21711711279006209
Magnetite  (*)SpinelFe2+Fe3+2O41711712279006,27900714899
Microcline  (*)FeldsparK(AlSi3O8)1711712279006,2790074924
Molybdenite  (*)MolybdeniteMoS212790045800
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)21711712279004,27900617380
Orthoclase  (*)FeldsparK(AlSi3O8)1711712279006,2790072349
Pyrite  (*)PyriteFeS2171171127900639462
Quartz  (*)QuartzSiO21711713279004,279006,27900761156
Sillimanite  (*)Not in a structural groupAl2SiO512790041516
Titanite  (*)TitaniteCaTi(SiO4)O17117112790064899
Zircon  (*)ZirconZr(SiO4)1711712279006,2790075251



Locality Notes from all Ages at Locality:
Age IDLocality Notes
AREPS5_257-00014There are two Mount Monadnock's in mindat, one in NH one in VT, neither match the GPS listed in this record, but the GPS here is in N. VT near the border w/ NH.


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
AREPS5_257-00014171171171        220659Monadnock Mountain (Mount Monadnock), Lemington, Essex Co., Vermont, USAMount MonadnockZartman (1977)10.1146/annurev.ea.05.050177.001353AREPS5_257 


SampleSource LocalityReference URL


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