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:
Pelton's Quarry, Portland, Middlesex Co., Connecticut, USA


mindat Locality ID: 18296
mindat URL: http://www.mindat.org/loc-18296.html

Tectonic Settings:

Total number of sublocalities beneath "Pelton's Quarry, Portland, Middlesex Co., Connecticut, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 41°36'4"N
Longitude: 72°34'36"W
Decimal Degree (lat, lon): 41.601111111111,-72.576666666667
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 Bi C Ca Cu F Fe H K Mn Na Nb O P S Si U Y Zn Zr 

Elements from minerals reported directly at this locality: Al B Be Bi C Ca Cu F Fe H K Mn Na Nb O P S Si U Y Zn Zr 

Structural Groups for minerals in this locality: 
AmorphousApatiteAutuniteBerylBismutiteClayColumbiteFeldsparFluoriteGarnet
MicaNoneNot in a structural groupQuartzSpinelStibniteTourmalineZircon

22 IMA Minerals at location:
Albite  (*)Almandine  (*)Annite  (*)Autunite  (*)Bertrandite  (*)
Beryl  (*)Bismuthinite  (*)Bismutite  (*)Fluorapatite  (*)Gahnite  (*)
Magnetite  (*)Microcline  (*)Muscovite  (*)Opal  (*)Quartz  (*)
Samarskite-(Y)  (*)Schorl  (*)Spessartine  (*)Torbernite  (*)Uraninite  (*)
Uranophane-α  (*)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)08803
Almandine  (*)GarnetFe2+3Al2(SiO4)302353
Annite  (*)Mica ClayKFe2+3(AlSi3O10)(OH)20356
Autunite  (*)AutuniteCa(UO2)2(PO4)2·10-12H2O01272
Bertrandite  (*)Not in a structural groupBe4Si2O7(OH)20606
Beryl  (*)BerylBe3Al2Si6O1804286
Bismuthinite  (*)StibniteBi2S301935
Bismutite  (*)BismutiteBi2O2(CO3)0716
Fluorapatite  (*)ApatiteCa5(PO4)3F02740
Gahnite  (*)SpinelZnAl2O40445
Magnetite  (*)SpinelFe2+Fe3+2O4014899
Microcline  (*)FeldsparK(AlSi3O8)04924
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)2017380
Opal  (*)AmorphousSiO2·nH2O02994
Quartz  (*)QuartzSiO2061156
Samarskite-(Y)  (*)ColumbiteYFe3+Nb2O80353
Schorl  (*)TourmalineNaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)02705
Spessartine  (*)GarnetMn2+3Al2(SiO4)301214
Torbernite  (*)NoneCu(UO2)2(PO4)2·12H2O01059
Uraninite  (*)FluoriteUO202718
Uranophane-α  (*)NoneCa(UO2)2(SiO3OH)2·5H2O0890
Zircon  (*)ZirconZr(SiO4)05251


No ages have been assigned to this locality yet.
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