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:
Pembroke, Washington Co., Maine, USA

Oldest recorded age at locality: 430
Youngest recorded age at locality: 430

mindat Locality ID: 30643
mindat URL: http://www.mindat.org/loc-30643.html

Tectonic Settings:

Total number of sublocalities beneath "Pembroke, Washington Co., Maine, USA": 4
Total number of bottom-level sublocalities: 4

Number of Child Localities: 4
Child Localities:
Big Hill Mine
Dolsan Prospect (Barrett Prospect)
Long Hill Mine
US #1 Road Cuts

Latitude: 44°57'55"N
Longitude: 67°12'39"W
Decimal Degree (lat, lon): 44.965277777778,-67.210833333333
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 Ba C Ca Cl Cu Fe H Mg Na O P Pb S Si Zn 

Elements from minerals reported directly at this locality: Au C Ca Mg O 

Structural Groups for minerals in this locality: 
ApatiteAragoniteArsenopyriteBaryteCalciteChalcopyriteChloriteClayClinozoisiteCopper
CorundumDiasporeEpidoteGypsumLepidocrociteMalachiteNoneNot in a structural groupOlivinePumpellyite
PyriteQuartzRocksaltSmectite-vermiculiteSphaleriteSpinel

33 IMA Minerals at location:
Anglesite  (*)Aragonite  (*)Arsenopyrite  (*)Aurichalcite  (*)Azurite  (*)
Baryte  (*)Bornite  (*)Calcite  (*)Cerussite  (*)Chalcopyrite  (*)
Chamosite  (*)Cuprite  (*)Dolomite  (*)Epidote  (*)Forsterite  (*)
Galena  (*)Goethite  (*)Gold  (*)Gypsum  (*)Hematite  (*)
Hemimorphite  (*)Lepidocrocite  (*)Magnetite  (*)Malachite  (*)Pumpellyite-(Mg)  (*)
Pyrite  (*)Pyromorphite  (*)Quartz  (*)Saponite  (*)Siderite  (*)
Smithsonite  (*)Sphalerite  (*)Tenorite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Anglesite  (*)BarytePb(SO4)43043012181642734
Aragonite  (*)AragoniteCa(CO3)43043012181653250
Arsenopyrite  (*)ArsenopyriteFeAsS43043012181649052
Aurichalcite  (*)None(Zn,Cu)5(CO3)2(OH)64304302218164,218165919
Azurite  (*)Not in a structural groupCu3(CO3)2(OH)24304302218164,2181655509
Baryte  (*)BaryteBa(SO4)4304302218164,21816511547
Bornite  (*)NoneCu5FeS443043012181645516
Calcite  (*)CalciteCa(CO3)4304302218164,21816727770
Cerussite  (*)AragonitePb(CO3)43043012181644979
Chalcopyrite  (*)ChalcopyriteCuFeS24304302218164,21816527198
Chamosite  (*)Chlorite Clay(Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)84304301218164577
Cuprite  (*)Not in a structural groupCu2O43043012181652970
Dolomite  (*)NoneCaMg(CO3)243043009895
Epidote  (*)Epidote ClinozoisiteCa2(Al2Fe3+)[Si2O7][SiO4]O(OH)12181678173
Forsterite  (*)OlivineMg2(SiO4)12181671188
Galena  (*)RocksaltPbS4304302218164,21816524243
Goethite  (*)DiasporeFeO(OH)43043012181647437
Gold  (*)CopperAu430430030554
Gypsum  (*)GypsumCa(SO4)·2H2O43043012181656890
Hematite  (*)CorundumFe2O3430430121816414640
Hemimorphite  (*)Not in a structural groupZn4(Si2O7)(OH)2·H2O43043012181641689
Lepidocrocite  (*)LepidocrociteFe3+O(OH)4304301218164581
Magnetite  (*)SpinelFe2+Fe3+2O4430430121816414899
Malachite  (*)MalachiteCu2(CO3)(OH)24304302218164,21816512537
Pumpellyite-(Mg)  (*)PumpellyiteCa2MgAl2(Si2O7)(SiO4)(OH)2·H2O1218167106
Pyrite  (*)PyriteFeS24304302218164,21816539462
Pyromorphite  (*)ApatitePb5(PO4)3Cl43043012181641725
Quartz  (*)QuartzSiO24304302218164,21816561156
Saponite  (*)Clay Smectite-vermiculite(Ca,Na)0.3(Mg,Fe)3(Si,Al)4O10(OH)2·4H2O1218167301
Siderite  (*)CalciteFe(CO3)43043012181646417
Smithsonite  (*)CalciteZn(CO3)4304302218164,2181652473
Sphalerite  (*)SphaleriteZnS4304302218164,21816521482
Tenorite  (*)NoneCuO43043012181651101


2 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
vms-01055430430Silurian       S46375Big Hill Mine, Pembroke, Washington Co., Maine, USABig HillMoiser et al. (2009) USGSOFR2009_1034 
vms-01054430430Silurian       S30641Dolsan Prospect (Barrett Prospect), Pembroke, Washington Co., Maine, USABarrettMoiser et al. (2009) USGSOFR2009_1034 

SampleSource LocalityReference URL

All locality data graciously provided by mindat.org

All age data...

Other copyright data...