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:
Simsbury Mines, East Granby, Hartford Co., Connecticut, USA

Oldest recorded age at locality: 220
Youngest recorded age at locality: 220

mindat Locality ID: 23020
mindat URL: http://www.mindat.org/loc-23020.html

Tectonic Settings:

Total number of sublocalities beneath "Simsbury Mines, East Granby, Hartford Co., Connecticut, USA": 3
Total number of bottom-level sublocalities: 3

Number of Child Localities: 3
Child Localities:
Higley Mine
Newgate Copper Mine (Old Newgate Prison)
North Hill Mines

Latitude: 41°57'22"N
Longitude: 72°44'51"W
Decimal Degree (lat, lon): 41.956111111111,-72.7475

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 Cu Fe H K Mg O S Si U V 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
AllophaneChalcopyriteCopperCorundumFluoriteMalachiteNoneNot in a structural groupZircon

14 IMA Minerals at location:
Azurite  (*)Bornite  (*)Carnotite  (*)Chalcocite  (*)Chalcopyrite  (*)
Chrysocolla  (*)Coffinite  (*)Copper  (*)Cuprite  (*)Dolomite  (*)
Hematite  (*)Malachite  (*)Tyuyamunite  (*)Uraninite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Azurite  (*)Not in a structural groupCu3(CO3)2(OH)222022011988415509
Bornite  (*)NoneCu5FeS42202203198840,198841,1988425516
Carnotite  (*)NoneK2(UO2)2(VO4)2·3H2O22022011988411184
Chalcocite  (*)NoneCu2S2202202198841,1988425707
Chalcopyrite  (*)ChalcopyriteCuFeS22202203198840,198841,19884227198
Chrysocolla  (*)Allophane(Cu2-xAlx)H2-xSi2O5(OH)4·nH2O22022011988413531
Coffinite  (*)ZirconU(SiO4)·nH2O2202201198841566
Copper  (*)CopperCu22022011988413846
Cuprite  (*)Not in a structural groupCu2O2202202198841,1988422970
Dolomite  (*)NoneCaMg(CO3)211988409895
Hematite  (*)CorundumFe2O3119884014640
Malachite  (*)MalachiteCu2(CO3)(OH)22202202198841,19884212537
Tyuyamunite  (*)NoneCa(UO2)2(VO4)2·5-8H2O2202201198841628
Uraninite  (*)FluoriteUO222022011988412718



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
sedcu-00664220220Triassic       Cu205644Newgate Copper Mine (Old Newgate Prison), Simsbury Mines, East Granby, Hartford Co., Connecticut, USANewgate PrisonCox et al. (2003) USGSOFR03_107 


SampleSource LocalityReference URL


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