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:
Franconia, Grafton Co., New Hampshire, USA

Oldest recorded age at locality: 194
Youngest recorded age at locality: 194

mindat Locality ID: 9277
mindat URL: http://www.mindat.org/loc-9277.html

Tectonic Settings:

Total number of sublocalities beneath "Franconia, Grafton Co., New Hampshire, USA": 6
Total number of bottom-level sublocalities: 5

Number of Child Localities: 5
Child Localities:
Cannon Mountain
Coppermine Brook Mine (Franconia Copper Mine; Bridal Veil Falls Mine)
Gale River Placer Localities
Mount Lafayette
Peckett Mine (Peckett's Copper Mine)

Latitude: 44°10'1"N
Longitude: 71°41'40"W
Decimal Degree (lat, lon): 44.166944444444,-71.694444444444
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 Au C Ca Cu Fe H K Mg Mo O Pb S Si Ti 

Elements from minerals reported directly at this locality: Al C Ca Cu Fe H Mg Mo O S Si 

Structural Groups for minerals in this locality: 
AmphiboleArsenopyriteCalciteChalcopyriteClayClinozoisiteCopperCorundumEpidoteGarnet
MicaMolybdeniteNoneNot in a structural groupOlivinePyritePyroxeneQuartzRocksaltSpinel
Staurolite

22 IMA Minerals at location:
Almandine  (*)Arsenopyrite  (*)Azurite  (*)Calcite  (*)Chalcopyrite  (*)
Epidote  (*)Fayalite  (*)Ferrimolybdite  (*)Galena  (*)Gold  (*)
Hedenbergite  (*)Hematite  (*)Ilmenite  (*)Magnetite  (*)Molybdenite  (*)
Muscovite  (*)Pyrite  (*)Quartz  (*)Sillimanite  (*)Staurolite  (*)
Tremolite  (*)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)312421762353
Arsenopyrite  (*)ArsenopyriteFeAsS12421759052
Azurite  (*)Not in a structural groupCu3(CO3)2(OH)219419405509
Calcite  (*)CalciteCa(CO3)194194027770
Chalcopyrite  (*)ChalcopyriteCuFeS22242175,24217827198
Epidote  (*)Epidote ClinozoisiteCa2(Al2Fe3+)[Si2O7][SiO4]O(OH)19419408173
Fayalite  (*)OlivineFe2+2(SiO4)1941940371
Ferrimolybdite  (*)NoneFe3+2(Mo6+O4)3·7H2O1941940345
Galena  (*)RocksaltPbS194194124217424243
Gold  (*)CopperAu124217630554
Hedenbergite  (*)PyroxeneCaFe2+Si2O61941940741
Hematite  (*)CorundumFe2O3124217714640
Ilmenite  (*)CorundumFe2+Ti4+O312421765433
Magnetite  (*)SpinelFe2+Fe3+2O4124217614899
Molybdenite  (*)MolybdeniteMoS219419405800
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)21941943242174,242176,24217817380
Pyrite  (*)PyriteFeS21941943242174,242175,24217839462
Quartz  (*)QuartzSiO21941944242174,242175,242176,24217861156
Sillimanite  (*)Not in a structural groupAl2SiO519419401516
Staurolite  (*)StauroliteFe2+2Al9Si4O23(OH)1941940978
Tremolite  (*)Amphibole   Ca2(Mg5.0-4.5Fe2+0.0-0.5)Si8O22(OH)219419402562
Zoisite  (*)EpidoteCa2Al3[Si2O7][SiO4]O(OH)19419401025


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
AREPS5_257-00007194194194        234183Cannon Mountain, Franconia, Grafton Co., New Hampshire, USACannon MountainZartman (1977)10.1146/annurev.ea.05.050177.001353AREPS5_257 

SampleSource LocalityReference URL

All locality data graciously provided by mindat.org

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