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:
Willsboro, Essex Co., New York, USA

Oldest recorded age at locality: 1008
Youngest recorded age at locality: 998

mindat Locality ID: 16451
mindat URL: http://www.mindat.org/loc-16451.html

Tectonic Settings:

Total number of sublocalities beneath "Willsboro, Essex Co., New York, USA": 2
Total number of bottom-level sublocalities: 2

Number of Child Localities: 2
Child Localities:
Lewis Mine (Cabot Corporation Mine; Lewis NYCO Mine)
Willsboro Mine

Latitude: 44°19'23"N
Longitude: 73°45'"W
Decimal Degree (lat, lon): 44.323055555556,-73.75
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 Fe H Mg Na O Si Ti Zr 

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

Structural Groups for minerals in this locality: 
CalciteClayClinozoisiteEpidoteGarnetNonePyroxeneQuartzSmectite-vermiculiteTalc
TitaniteWollastoniteZircon

12 IMA Minerals at location:
Andradite  (*)Calcite  (*)Clinozoisite  (*)Diopside  (*)Grossular  (*)
Montmorillonite  (*)Quartz  (*)Stevensite  (*)Talc  (*)Titanite  (*)
Wollastonite  (*)Zircon  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Andradite  (*)GarnetCa3Fe3+2(SiO4)3100899801534
Calcite  (*)CalciteCa(CO3)124798227770
Clinozoisite  (*)Clinozoisite EpidoteCa2Al3[Si2O7][SiO4]O(OH)100899801025
Diopside  (*)PyroxeneCaMgSi2O610089982247981,2479824135
Grossular  (*)GarnetCa3Al2(SiO4)312479821544
Montmorillonite  (*)Clay Smectite-vermiculite(Na,Ca)0.3(Al,Mg)2Si4O10(OH)2·nH2O12479821508
Quartz  (*)QuartzSiO2124798261156
Stevensite  (*)Clay(Ca,Na)xMg3-ySi4O10(OH)2124798257
Talc  (*)Clay TalcMg3Si4O10(OH)212479823337
Titanite  (*)TitaniteCaTi(SiO4)O12479824899
Wollastonite  (*)WollastoniteCaSiO310089982247981,2479821247
Zircon  (*)ZirconZr(SiO4)100899812479815251


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_05810089981003±5U/Pb zircon   Zircon  69598Lewis Mine (Cabot Corporation Mine; Lewis NYCO Mine), Willsboro, Essex Co., New York, USALewis MineMcCauley and Bradley (2014)10.3749/canmin.52.2.183CM52_183 

SampleSource LocalityReference URL
FKM-126Lewis Mine (Cabot Corporation Mine; Lewis NYCO Mine), Willsboro, Essex Co., New York, USAhttps://www.rockptx.com/fkm-126-to-fkm-150/#FKM-126

All locality data graciously provided by mindat.org

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