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:
Mount Desert, Hancock Co., Maine, USA

Oldest recorded age at locality: 432.95
Youngest recorded age at locality: 394.16

mindat Locality ID: 24667
mindat URL: http://www.mindat.org/loc-24667.html

Tectonic Settings:

Total number of sublocalities beneath "Mount Desert, Hancock Co., Maine, USA": 4
Total number of bottom-level sublocalities: 4

Number of Child Localities: 4
Child Localities:
Grenci-Ellis Granite Quarry
Hall's Quarry
Joe's Quarry
Sewards Island

Latitude: 44°20'8"N
Longitude: 68°19'49"W
Decimal Degree (lat, lon): 44.335555555556,-68.330277777778
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 C Ca Ce F Fe H K Mg Na O P Si Ti Y Zr 

Elements from minerals reported directly at this locality: Al Ca Ce F Fe H K Mg Na O P Si Ti Zr 

Structural Groups for minerals in this locality: 
AllaniteAmphiboleAndalusiteApatiteBerylChloriteClayClinozoisiteCorundumEpidote
FeldsparFluoriteMicaNoneOlivinePyroxeneQuartzSpinelStilbiteStilpnomelane
TitaniteTourmalineZircon

25 IMA Minerals at location:
Actinolite  (*)Albite  (*)Allanite-(Ce)  (*)Andalusite  (*)Augite  (*)
Chamosite  (*)Clinochlore  (*)Cordierite  (*)Epidote  (*)Fayalite  (*)
Ferro-edenite  (*)Fluorapatite  (*)Fluorite  (*)Hematite  (*)Kainosite-(Y)  (*)
Kamphaugite-(Y)  (*)Magnetite  (*)Microcline  (*)Muscovite  (*)Quartz  (*)
Schorl  (*)Stellerite  (*)Stilpnomelane  (*)Titanite  (*)Zircon  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Actinolite  (*)Amphibole   Ca2(Mg4.5-2.5Fe2+0.5-2.5)Si8O22(OH)2432.95394.1612170233419
Albite  (*)FeldsparNa(AlSi3O8)432.95394.1612170238803
Allanite-(Ce)  (*)Allanite EpidoteCaCe(Al2Fe2+)[Si2O7][SiO4]O(OH)432.95394.160706
Andalusite  (*)AndalusiteAl2SiO5432.95394.1601310
Augite  (*)Pyroxene(Ca,Mg,Fe)2Si2O6432.95394.1602060
Chamosite  (*)Chlorite Clay(Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)8432.95394.160577
Clinochlore  (*)Chlorite ClayMg5Al(AlSi3O10)(OH)8432.95394.162217023,2170251756
Cordierite  (*)BerylMg2Al4Si5O18432.95394.1601008
Epidote  (*)Epidote ClinozoisiteCa2(Al2Fe3+)[Si2O7][SiO4]O(OH)12170248173
Fayalite  (*)OlivineFe2+2(SiO4)432.95394.160371
Ferro-edenite  (*)AmphiboleNaCa2Fe2+5(Si7Al)O22(OH)2432.95394.16057
Fluorapatite  (*)ApatiteCa5(PO4)3F432.95394.1602740
Fluorite  (*)FluoriteCaF2432.95394.162217023,2170249617
Hematite  (*)CorundumFe2O3121702614640
Kainosite-(Y)  (*)NoneCa2Y2(SiO3)4(CO3)·H2O432.95394.16121702399
Kamphaugite-(Y)  (*)NoneCaY(CO3)2(OH)·H2O432.95394.16121702328
Magnetite  (*)SpinelFe2+Fe3+2O4432.95394.16121702314899
Microcline  (*)FeldsparK(AlSi3O8)432.95394.163217023,217024,2170254924
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)2432.95394.162217023,21702517380
Quartz  (*)QuartzSiO2432.95394.163217023,217024,21702561156
Schorl  (*)TourmalineNaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)432.95394.1612170232705
Stellerite  (*)StilbiteCa4(Si28Al8)O72·28H2O1217025189
Stilpnomelane  (*)Stilpnomelane Clay(K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36·nH2O432.95394.160456
Titanite  (*)TitaniteCaTi(SiO4)O432.95394.1604899
Zircon  (*)ZirconZr(SiO4)432.95394.1605251


20 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
USGS-Rb-Sr-01889432.95406.95419.95±13Rb-Srage of intrusionwhole rock     7598Grenci-Ellis Granite Quarry, Mount Desert, Hancock Co., Maine, USA USGS-Rb-Sr USGS-Rb-Sr 
USGS-Rb-Sr-01890426.16394.16410.16±16Rb-Srminimum age of intrusionwhole rock     7598Grenci-Ellis Granite Quarry, Mount Desert, Hancock Co., Maine, USA USGS-Rb-Sr USGS-Rb-Sr 
USGS-Rb-Sr-01892432.95406.95419.95±13Rb-Srage of intrusionwhole rock     7598Grenci-Ellis Granite Quarry, Mount Desert, Hancock Co., Maine, USA USGS-Rb-Sr USGS-Rb-Sr 
USGS-Rb-Sr-01893426.16394.16410.16±16Rb-Srminimum age of intrusionwhole rock     7598Grenci-Ellis Granite Quarry, Mount Desert, Hancock Co., Maine, USA USGS-Rb-Sr USGS-Rb-Sr 
USGS-Rb-Sr-01894432.95406.95419.95±13Rb-Srage of intrusionwhole rock     7598Grenci-Ellis Granite Quarry, Mount Desert, Hancock Co., Maine, USA USGS-Rb-Sr USGS-Rb-Sr 
USGS-Rb-Sr-01895432.95406.95419.95±13Rb-Srage of intrusionwhole rock     7598Grenci-Ellis Granite Quarry, Mount Desert, Hancock Co., Maine, USA USGS-Rb-Sr USGS-Rb-Sr 
USGS-Rb-Sr-01896426.16394.16410.16±16Rb-Srminimum age of intrusionwhole rock     7598Grenci-Ellis Granite Quarry, Mount Desert, Hancock Co., Maine, USA USGS-Rb-Sr USGS-Rb-Sr 
USGS-Rb-Sr-01897426.16394.16410.16±16Rb-Srminimum age of intrusionwhole rock     7598Grenci-Ellis Granite Quarry, Mount Desert, Hancock Co., Maine, USA USGS-Rb-Sr USGS-Rb-Sr 
USGS-Rb-Sr-01898432.95406.95419.95±13Rb-Srage of intrusionwhole rock     7598Grenci-Ellis Granite Quarry, Mount Desert, Hancock Co., Maine, USA USGS-Rb-Sr USGS-Rb-Sr 
USGS-Rb-Sr-01899426.16394.16410.16±16Rb-Srminimum age of intrusionwhole rock     7598Grenci-Ellis Granite Quarry, Mount Desert, Hancock Co., Maine, USA USGS-Rb-Sr USGS-Rb-Sr 
USGS-Rb-Sr-01900432.95406.95419.95±13Rb-Srage of intrusionwhole rock     7598Grenci-Ellis Granite Quarry, Mount Desert, Hancock Co., Maine, USA USGS-Rb-Sr USGS-Rb-Sr 
USGS-Rb-Sr-01901426.16394.16410.16±16Rb-Srminimum age of intrusionwhole rock     7598Grenci-Ellis Granite Quarry, Mount Desert, Hancock Co., Maine, USA USGS-Rb-Sr USGS-Rb-Sr 
USGS-Rb-Sr-01902432.95406.95419.95±13Rb-Srage of intrusionwhole rock     7598Grenci-Ellis Granite Quarry, Mount Desert, Hancock Co., Maine, USA USGS-Rb-Sr USGS-Rb-Sr 
USGS-Rb-Sr-01903426.16394.16410.16±16Rb-Srminimum age of intrusionwhole rock     7598Grenci-Ellis Granite Quarry, Mount Desert, Hancock Co., Maine, USA USGS-Rb-Sr USGS-Rb-Sr 
USGS-Rb-Sr-01904432.95406.95419.95±13Rb-Srage of intrusionwhole rock     7598Grenci-Ellis Granite Quarry, Mount Desert, Hancock Co., Maine, USA USGS-Rb-Sr USGS-Rb-Sr 
USGS-Rb-Sr-01905426.16394.16410.16±16Rb-Srminimum age of intrusionwhole rock     7598Grenci-Ellis Granite Quarry, Mount Desert, Hancock Co., Maine, USA USGS-Rb-Sr USGS-Rb-Sr 
USGS-Rb-Sr-01906432.95406.95419.95±13Rb-Srage of intrusionwhole rock     7598Grenci-Ellis Granite Quarry, Mount Desert, Hancock Co., Maine, USA USGS-Rb-Sr USGS-Rb-Sr 
USGS-Rb-Sr-01908432.95406.95419.95±13Rb-Srage of intrusionwhole rock     7598Grenci-Ellis Granite Quarry, Mount Desert, Hancock Co., Maine, USA USGS-Rb-Sr USGS-Rb-Sr 
USGS-Rb-Sr-01909426.16394.16410.16±16Rb-Srminimum age of intrusionwhole rock     7598Grenci-Ellis Granite Quarry, Mount Desert, Hancock Co., Maine, USA USGS-Rb-Sr USGS-Rb-Sr 
USGS-Rb-Sr-01910432.95406.95419.95±13Rb-Srage of intrusionwhole rock     7598Grenci-Ellis Granite Quarry, Mount Desert, Hancock Co., Maine, USA USGS-Rb-Sr USGS-Rb-Sr 

SampleSource LocalityReference URL

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