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:
Chesterfield, Hampshire Co., Massachusetts, USA

Oldest recorded age at locality: 373
Youngest recorded age at locality: 336.3

mindat Locality ID: 66274
mindat URL: http://www.mindat.org/loc-66274.html

Tectonic Settings:

Total number of sublocalities beneath "Chesterfield, Hampshire Co., Massachusetts, USA": 4
Total number of bottom-level sublocalities: 4

Number of Child Localities: 4
Child Localities:
Chesterfield Kyanite Locality
Clark Ledge Pegmatite Locality
Macomber Ledge Pegmatite Locality
West Chesterfield Hollow Pegmatite Locality

Latitude: 42°25'31"N
Longitude: 72°52'47"W
Decimal Degree (lat, lon): 42.425277777778,-72.879722222222

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 Ca Fe H K Li Mn Na Nb O P Si Sn U Zr 

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

Structural Groups for minerals in this locality: 
AutuniteBerylClayColumbiteFeldsparGarnetMicaNoneNot in a structural groupPyroxene
QuartzRutileStauroliteTourmalineZircon

17 IMA Minerals at location:
Albite  (*)Almandine  (*)Autunite  (*)Beryl  (*)Cassiterite  (*)
Columbite-(Fe)  (*)Columbite-(Mn)  (*)Elbaite  (*)Kyanite  (*)Microcline  (*)
Muscovite  (*)Quartz  (*)Schorl  (*)Spessartine  (*)Spodumene  (*)
Staurolite  (*)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)373336.33219523,219524,2195258803
Almandine  (*)GarnetFe2+3Al2(SiO4)3373336.32219522,2195232353
Autunite  (*)AutuniteCa(UO2)2(PO4)2·10-12H2O373336.312195231272
Beryl  (*)BerylBe3Al2Si6O18373336.33219523,219524,2195254286
Cassiterite  (*)RutileSnO2373336.312195235171
Columbite-(Fe)  (*)ColumbiteFe2+Nb2O6373336.31219523518
Columbite-(Mn)  (*)ColumbiteMn2+Nb2O6373336.31219523289
Elbaite  (*)TourmalineNa(Al1.5Li1.5)Al6(Si6O18)(BO3)3(OH)3(OH)373336.31219523520
Kyanite  (*)Not in a structural groupAl2OSiO437336912195221507
Microcline  (*)FeldsparK(AlSi3O8)373336.312195234924
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)2373336.33219523,219524,21952517380
Quartz  (*)QuartzSiO2373336.34219522,219523,219524,21952561156
Schorl  (*)TourmalineNaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)373336.312195232705
Spessartine  (*)GarnetMn2+3Al2(SiO4)33733692219524,2195251214
Spodumene  (*)PyroxeneLiAlSi2O6373336.33219523,219524,219525688
Staurolite  (*)StauroliteFe2+2Al9Si4O23(OH)373336.30978
Zircon  (*)ZirconZr(SiO4)3733693219523,219524,2195255251



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-0183370.89370.59370.74 ± 0.15U-PbAge of pegmatitezircon11DW300a  Zircon  5971Clark Ledge Pegmatite Locality, Chesterfield, Hampshire Co., Massachusetts, USAClark LedgeBradley et al. (2016)10.3749/canmin.1600035CM54_945 
Alexandra-0184341.9336.3339.1 ± 2.8Ar-ArAge of pegmatitemuscovite11Dw300  Muscovite  5971Clark Ledge Pegmatite Locality, Chesterfield, Hampshire Co., Massachusetts, USAClark LedgeBradley et al. (2016)10.3749/canmin.1600035CM54_945 
Bradley_2012_067373369371±2U/Pb zircon   Zircon  5971Clark Ledge Pegmatite Locality, Chesterfield, Hampshire Co., Massachusetts, USAClark LedgeMcCauley and Bradley (2014)10.3749/canmin.52.2.183CM52_183 


SampleSource LocalityReference URL


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