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:
Northfield, Franklin Co., Massachusetts, USA


mindat Locality ID: 15226
mindat URL: http://www.mindat.org/loc-15226.html

Tectonic Settings:

Total number of sublocalities beneath "Northfield, Franklin Co., Massachusetts, USA": 6
Total number of bottom-level sublocalities: 6

Number of Child Localities: 6
Child Localities:
Bassett & Lyons Quarry
Brush Mountain
Lane Quarry
Piper Graphite Mine (Piper Black-lead Mine)
Ross's Lead Mine
Sky Farm

Latitude: 42°40'11"N
Longitude: 72°26'35"W
Decimal Degree (lat, lon): 42.669722222222,-72.443055555556
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 As Ba Be C Ca Cl Cu F Fe H K Mg Na O Pb S Si Zn 

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

Structural Groups for minerals in this locality: 
AmorphousAnalcimeApatiteAragoniteBaryteBerylCalciteChabaziteChalcopyriteClay
ClinozoisiteCorundumDiasporeEpidoteFluoriteGarnetHarmotomeMicaNonePrehnite
PyriteQuartzRocksaltSphaleriteStauroliteWurtzite

26 IMA Minerals at location:
Almandine  (*)Analcime  (*)Baryte  (*)Beryl  (*)Calcite  (*)
Cerussite  (*)Chabazite-Ca  (*)Chalcopyrite  (*)Dolomite  (*)Epidote  (*)
Fluorite  (*)Galena  (*)Goethite  (*)Graphite  (*)Harmotome  (*)
Hematite  (*)Lechatelierite  (*)Mimetite  (*)Muscovite  (*)Prehnite  (*)
Pyrite  (*)Quartz  (*)Sphalerite  (*)Staurolite  (*)Wurtzite  (*)
Zoisite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Almandine  (*)GarnetFe2+3Al2(SiO4)312194492353
Analcime  (*)AnalcimeNa(AlSi2O6)·H2O12194461627
Baryte  (*)BaryteBa(SO4)2219446,21944811547
Beryl  (*)BerylBe3Al2Si6O1812194454286
Calcite  (*)CalciteCa(CO3)121944627770
Cerussite  (*)AragonitePb(CO3)12194464979
Chabazite-Ca  (*)ChabaziteCa2[Al4Si8O24]·13H2O1219446310
Chalcopyrite  (*)ChalcopyriteCuFeS2121944627198
Dolomite  (*)NoneCaMg(CO3)212194489895
Epidote  (*)Epidote ClinozoisiteCa2(Al2Fe3+)[Si2O7][SiO4]O(OH)08173
Fluorite  (*)FluoriteCaF22219446,2194489617
Galena  (*)RocksaltPbS2219446,21944824243
Goethite  (*)DiasporeFeO(OH)12194467437
Graphite  (*)NoneC2219447,2194492812
Harmotome  (*)HarmotomeBa2(Si12Al4)O32·12H2O1219446290
Hematite  (*)CorundumFe2O3014640
Lechatelierite  (*)AmorphousSiO2062
Mimetite  (*)ApatitePb5(AsO4)3Cl12194461107
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)2121944617380
Prehnite  (*)PrehniteCa2Al(Si3Al)O10(OH)212194461898
Pyrite  (*)PyriteFeS22219446,21944839462
Quartz  (*)QuartzSiO2121944661156
Sphalerite  (*)SphaleriteZnS121944621482
Staurolite  (*)StauroliteFe2+2Al9Si4O23(OH)1219449978
Wurtzite  (*)WurtziteZnS1219446372
Zoisite  (*)EpidoteCa2Al3[Si2O7][SiO4]O(OH)01025


No ages have been assigned to this locality yet.
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