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:
Cheshire, Berkshire Co., Massachusetts, USA


mindat Locality ID: 15276
mindat URL: http://www.mindat.org/loc-15276.html

Tectonic Settings:

Total number of sublocalities beneath "Cheshire, Berkshire Co., Massachusetts, USA": 8
Total number of bottom-level sublocalities: 8

Number of Child Localities: 8
Child Localities:
Ore Pit Lime-Marble Quarry (Lime-Marble Quarry #2)
Bennett Iron Mine
Bliss Iron Mine
Dean Lime-Marble Quarry (Lime-Marble Quarry #3)
Farnams Lime-Marble Quarry (US Gypsum Quarry; Lime-Marble Quarry #4)
Jaeger Iron Mine
Krushnya Quarry (Lime-Marble Quarry #1)
North Mountain Serpentine Locality ("Dunite Locality" Of Emerson)

Latitude: 42°33'43"N
Longitude: 73°9'48"W
Decimal Degree (lat, lon): 42.561944444444,-73.163333333333
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 C Ca Cu F Fe H K Mg Na O Pb S Si Zr 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
AmphiboleAragoniteBruciteCalciteChalcopyriteClayClinozoisiteCorundumDiasporeEpidote
GarnetMicaNoneOlivinePyriteQuartzRocksaltSerpentineSpinelTalc
TourmalineVesuvianiteZircon

22 IMA Minerals at location:
Actinolite  (*)Almandine  (*)Antigorite  (*)Aragonite  (*)Brucite  (*)
Calcite  (*)Chalcopyrite  (*)Chrysotile  (*)Epidote  (*)Forsterite  (*)
Galena  (*)Goethite  (*)Graphite  (*)Hematite  (*)Magnetite  (*)
Muscovite  (*)Pyrite  (*)Quartz  (*)Schorl  (*)Talc  (*)
Vesuvianite  (*)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)212191093419
Almandine  (*)GarnetFe2+3Al2(SiO4)312191092353
Antigorite  (*)Serpentine ClayMg3Si2O5(OH)41219109708
Aragonite  (*)AragoniteCa(CO3)12191063250
Brucite  (*)BruciteMg(OH)21219109462
Calcite  (*)CalciteCa(CO3)121910627770
Chalcopyrite  (*)ChalcopyriteCuFeS2121910627198
Chrysotile  (*)Serpentine ClayMg3Si2O5(OH)41219109951
Epidote  (*)Epidote ClinozoisiteCa2(Al2Fe3+)[Si2O7][SiO4]O(OH)12191098173
Forsterite  (*)OlivineMg2(SiO4)12191091188
Galena  (*)RocksaltPbS121910624243
Goethite  (*)DiasporeFeO(OH)12191077437
Graphite  (*)NoneC12191092812
Hematite  (*)CorundumFe2O33219106,219107,21910914640
Magnetite  (*)SpinelFe2+Fe3+2O4121910914899
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)2121910917380
Pyrite  (*)PyriteFeS2121910639462
Quartz  (*)QuartzSiO22219106,21910961156
Schorl  (*)TourmalineNaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)12191062705
Talc  (*)Clay TalcMg3Si4O10(OH)212191093337
Vesuvianite  (*)Vesuvianite(Ca,Na)19(Al,Mg,Fe)13(SiO4)10(Si2O7)4(OH,F,O)1012191091395
Zircon  (*)ZirconZr(SiO4)12191095251


No ages have been assigned to this locality yet.
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