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:
Greenwood, Oxford Co., Maine, USA

Oldest recorded age at locality: 264
Youngest recorded age at locality: 260

mindat Locality ID: 3778
mindat URL: http://www.mindat.org/loc-3778.html

Tectonic Settings:

Total number of sublocalities beneath "Greenwood, Oxford Co., Maine, USA": 23
Total number of bottom-level sublocalities: 22

Number of Child Localities: 22
Child Localities:
Beryllium Corporation Quarry
Diamond Ledge Locality
Greenwood Ice Caves
Hayes Ledge Quarries (East And West)
Heath Quarry
Heikkinen Quarry
Immonen Ledge Prospect #1
Immonen Ledge Prospect #2
Morgan Quarry (Upper Noyes Mountain Quarry; Upper Harvard Quarry)
Mustonen Ledge Prospect
Noyes Mountain Quarry (Harvard Quarry)
Nubble Quarry
Ohtonen Quarry
Outback Prospect (Gross Prospect)
Patch Mountain Beryl Prospect
Tamminen Quarry
Tamminen Senior Quarry
Tiger Bill Quarries
Uncle Tom Mountain
Waisanen Quarry (Tamminen-Waisanen Quarry)
West Greenwood Prospect
Witt Hill Chrysoberyl Locality

Latitude: 44°17'34"N
Longitude: 70°38'42"W
Decimal Degree (lat, lon): 44.292777777778,-70.645
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 B Ba Be Bi C Ca Cs Cu F Fe H K Li Mg Mn Na Nb O P Pb S Si Sn Sr Ta U W Zn Zr 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
AllophaneAluniteAmorphousAnalcimeApatiteArrojaditeArsenicArseniosideriteArsenopyriteArthurite
AutuniteAxiniteBerauniteBerylBerylloniteCalciteChalcopyriteChildreniteChloriteClay
ColumbiteCoronaditeDiasporeDumortieriteFairfielditeFeldsparFluoriteGadoliniteGarnetGraftonite
HureauliteJahnsiteKaoliniteLöllingiteLaueiteLeucophosphiteMeta-autuniteMicaMilariteNone
Not in a structural groupOlivinePerhamitePhosphosideritePhosphuranylitePyritePyroxeneQuartzReddingiteRockbridgeite
RutileScapoliteScheeliteSchoepiteSmectite-vermiculiteSphaleriteSpinelStewartiteStrunziteTopaz
TourmalineTridymiteVesuvianiteVivianiteWölsendorfiteZircon

102 IMA Minerals at location:
Albite  (*)Almandine  (*)Arsenopyrite  (*)Autunite  (*)Axinite-(Fe)  (*)
Beraunite  (*)Bermanite  (*)Bertrandite  (*)Beryl  (*)Beryllonite  (*)
Bismuth  (*)Calcite  (*)Cassiterite  (*)Chalcopyrite  (*)Chrysoberyl  (*)
Chrysocolla  (*)Columbite-(Fe)  (*)Columbite-(Mn)  (*)Cookeite  (*)Crandallite  (*)
Cryptomelane  (*)Diadochite  (*)Dickinsonite-(KMnNa)  (*)Diopside  (*)Dumortierite  (*)
Earlshannonite  (*)Elbaite  (*)Eosphorite  (*)Fairfieldite  (*)Fluorapatite  (*)
Fluorite  (*)Fourmarierite  (*)Frondelite  (*)Gahnite  (*)Goethite  (*)
Goyazite  (*)Graftonite  (*)Heterosite  (*)Hureaulite  (*)Hydroxylapatite  (*)
Hydroxylherderite  (*)Ice  (*)Jahnsite-(MnMnMn)  (*)Kaolinite  (*)Kasolite  (*)
Kastningite  (*)Landesite  (*)Laueite  (*)Leucophosphite  (*)Lithiophilite  (*)
Löllingite  (*)Ludlamite  (*)Meionite  (*)Meta-autunite  (*)Metaswitzerite  (*)
Metatorbernite  (*)Microcline  (*)Milarite  (*)Mitridatite  (*)Montebrasite  (*)
Montmorillonite  (*)Moraesite  (*)Muscovite  (*)Nontronite  (*)Opal  (*)
Perhamite  (*)Petalite  (*)Phosphoferrite  (*)Phosphosiderite  (*)Phosphuranylite  (*)
Pollucite  (*)Purpurite  (*)Pyrite  (*)Quartz  (*)Reddingite  (*)
Rhodochrosite  (*)Robertsite  (*)Rockbridgeite  (*)Scheelite  (*)Schorl  (*)
Scorodite  (*)Siderite  (*)Sillimanite  (*)Sphalerite  (*)Spodumene  (*)
Stewartite  (*)Strengite  (*)Strunzite  (*)Tantalite-(Mn)  (*)Tantalowodginite  (*)
Tenorite  (*)Todorokite  (*)Topaz  (*)Torbernite  (*)Triphylite  (*)
Uraninite  (*)Uranophane-α  (*)Vesuvianite  (*)Vivianite  (*)Wodginite  (*)
Wölsendorfite  (*)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)26426019217310,217311,217312,217313,217314,217315,217316,217317,217318,217319,217320,217321,217322,217323,217324,217326,217327,217328,2173298803
Almandine  (*)GarnetFe2+3Al2(SiO4)326426018217307,217310,217311,217312,217313,217314,217315,217316,217317,217318,217319,217321,217322,217323,217324,217326,217327,2173292353
Arsenopyrite  (*)ArsenopyriteFeAsS2642604217315,217317,217326,2173279052
Autunite  (*)AutuniteCa(UO2)2(PO4)2·10-12H2O2642609217310,217312,217315,217317,217320,217322,217324,217326,2173291272
Axinite-(Fe)  (*)AxiniteCa4Fe2+2Al4[B2Si8O30](OH)22642601217317260
Beraunite  (*)BerauniteFe3+6(PO4)4O(OH)4·6H2O2642601217326136
Bermanite  (*)ArthuriteMn2+Mn3+2(PO4)2(OH)2·4H2O264260121732655
Bertrandite  (*)Not in a structural groupBe4Si2O7(OH)22642609217310,217315,217317,217319,217320,217322,217324,217326,217327606
Beryl  (*)BerylBe3Al2Si6O1826426012217307,217310,217312,217317,217318,217319,217321,217322,217323,217324,217326,2173274286
Beryllonite  (*)BerylloniteNaBe(PO4)2642602217317,21732647
Bismuth  (*)ArsenicBi26426012173221966
Calcite  (*)CalciteCa(CO3)2642603217317,217322,21732727770
Cassiterite  (*)RutileSnO22642606217317,217318,217320,217322,217326,2173275171
Chalcopyrite  (*)ChalcopyriteCuFeS22642602217318,21732227198
Chrysoberyl  (*)OlivineBeAl2O42642602217318,217329321
Chrysocolla  (*)Allophane(Cu2-xAlx)H2-xSi2O5(OH)4·nH2O26426012173223531
Columbite-(Fe)  (*)ColumbiteFe2+Nb2O62642603217310,217312,217326518
Columbite-(Mn)  (*)ColumbiteMn2+Nb2O62642603217317,217322,217326289
Cookeite  (*)Chlorite Clay(Al,Li)3Al2(Si,Al)4O10(OH)82642606217315,217317,217320,217322,217326,217327181
Crandallite  (*)AluniteCaAl3(PO4)(PO3OH)(OH)62642601217326310
Cryptomelane  (*)CoronaditeK(Mn4+7Mn3+)O162642601217322599
Diadochite  (*)AmorphousFe3+2(PO4)(SO4)(OH)·6H2O264260121732681
Dickinsonite-(KMnNa)  (*)ArrojaditeK(NaMn)CaNa3AlMn13(PO4)12(OH)22642602217322,21732626
Diopside  (*)PyroxeneCaMgSi2O62642602217315,2173174135
Dumortierite  (*)DumortieriteAlAl6BSi3O182642601217318231
Earlshannonite  (*)ArthuriteMn2+Fe3+2(PO4)2(OH)2·4H2O264260121732612
Elbaite  (*)TourmalineNa(Al1.5Li1.5)Al6(Si6O18)(BO3)3(OH)3(OH)2642606217315,217317,217320,217322,217326,217327520
Eosphorite  (*)ChildreniteMn2+Al(PO4)(OH)2·H2O2642602217322,217326128
Fairfieldite  (*)FairfielditeCa2Mn2+(PO4)2·2H2O2642604217315,217317,217322,21732672
Fluorapatite  (*)ApatiteCa5(PO4)3F26426011217310,217315,217317,217318,217319,217320,217322,217324,217326,217327,2173282740
Fluorite  (*)FluoriteCaF226426012173229617
Fourmarierite  (*)SchoepitePb1-xO3-2x(UO2)4(OH)4+2x·4H2O264260121732261
Frondelite  (*)Rockbridgeite(Mn2+0.5Fe3+0.5)2Fe3+3(PO4)3(OH)5264260121732652
Gahnite  (*)SpinelZnAl2O42642604217315,217319,217326,217329445
Goethite  (*)DiasporeFeO(OH)2642603217315,217317,2173277437
Goyazite  (*)AluniteSrAl3(PO4)(PO3OH)(OH)62642601217326173
Graftonite  (*)GraftoniteFe2+Fe2+2(PO4)22642601217327107
Heterosite  (*)OlivineFe3+(PO4)2642601217327204
Hureaulite  (*)HureauliteMn2+5(PO3OH)2(PO4)2·4H2O2642602217322,217326125
Hydroxylapatite  (*)ApatiteCa5(PO4)3OH2642601217326367
Hydroxylherderite  (*)GadoliniteCaBe(PO4)(OH)2642605217317,217322,217324,217326,217327119
Ice  (*)Amorphous TridymiteH2O264260121730959
Jahnsite-(MnMnMn)  (*)JahnsiteMn2+Mn2+Mn2+2Fe3+2(PO4)4(OH)2·8H2O26426012173266
Kaolinite  (*)Clay KaoliniteAl2Si2O5(OH)426426012173155591
Kasolite  (*)NonePb(UO2)(SiO4)·H2O2642601217312198
Kastningite  (*)StewartiteMn2+Al2(PO4)2(OH)2·8H2O26426012173268
Landesite  (*)ReddingiteMn2+9Fe3+3(PO4)8(OH)3·9H2O264260121732614
Laueite  (*)LaueiteMn2+Fe3+2(PO4)2(OH)2·8H2O264260121732670
Leucophosphite  (*)LeucophosphiteKFe3+2(PO4)2(OH)·2H2O2642601217326110
Lithiophilite  (*)OlivineLiMn2+(PO4)2642602217322,217326155
Löllingite  (*)LöllingiteFeAs22642601217326762
Ludlamite  (*)NoneFe2+3(PO4)2·4H2O264260121732666
Meionite  (*)ScapoliteCa4Al6Si6O24(CO3)2642602217317,217322176
Meta-autunite  (*)Meta-autuniteCa(UO2)2(PO4)2·6H2O2642606217312,217317,217322,217324,217326,217329388
Metaswitzerite  (*)NoneMn2+3(PO4)2·4H2O264260121732622
Metatorbernite  (*)NoneCu(UO2)2(PO4)2·8H2O2642601217329443
Microcline  (*)FeldsparK(AlSi3O8)26426020217307,217310,217311,217312,217313,217314,217315,217316,217317,217318,217319,217320,217321,217322,217323,217324,217326,217327,217328,2173294924
Milarite  (*)MilariteKCa2(Be2AlSi12)O30·H2O2642601217326156
Mitridatite  (*)ArseniosideriteCa2Fe3+3O2(PO4)3·3H2O2642601217326129
Montebrasite  (*)NoneLiAl(PO4)(OH)2642605217315,217317,217320,217322,217326200
Montmorillonite  (*)Clay Smectite-vermiculite(Na,Ca)0.3(Al,Mg)2Si4O10(OH)2·nH2O2642605217315,217317,217322,217326,2173271508
Moraesite  (*)NoneBe2(PO4)(OH)·4H2O264260121732635
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)226426020217307,217310,217311,217312,217313,217314,217315,217316,217317,217318,217319,217320,217321,217322,217323,217324,217326,217327,217328,21732917380
Nontronite  (*)Clay Smectite-vermiculiteNa0.3Fe3+2(Si,Al)4O10(OH)2·nH2O2642601217326471
Opal  (*)AmorphousSiO2·nH2O26426012173122994
Perhamite  (*)PerhamiteCa3Al7.7Si3P4O23.5(OH)14.1·8H2O264260121732619
Petalite  (*)Not in a structural groupLiAlSi4O102642601217322124
Phosphoferrite  (*)ReddingiteFe2+3(PO4)2·3H2O264260121732631
Phosphosiderite  (*)PhosphosideriteFe3+(PO4)·2H2O2642602217322,217326182
Phosphuranylite  (*)PhosphuranyliteKCa(H3O)3(UO2)7(PO4)4O4·8H2O2642601217326182
Pollucite  (*)AnalcimeCs(Si2Al)O6·nH2O2642602217322,217326140
Purpurite  (*)OlivineMn3+(PO4)2642602217322,21732680
Pyrite  (*)PyriteFeS22642607217308,217312,217317,217318,217319,217324,21732739462
Quartz  (*)QuartzSiO226426021217307,217308,217310,217311,217312,217313,217314,217315,217316,217317,217318,217319,217320,217321,217322,217323,217324,217326,217327,217328,21732961156
Reddingite  (*)ReddingiteMn2+3(PO4)2·3H2O264260121732624
Rhodochrosite  (*)CalciteMn(CO3)26426012173261711
Robertsite  (*)ArseniosideriteCa2Mn3+3O2(PO4)3·3H2O264260121732636
Rockbridgeite  (*)Rockbridgeite(Fe2+0.5Fe3+0.5)2Fe3+3(PO4)3(OH)52642601217326206
Scheelite  (*)ScheeliteCa(WO4)26426012173224894
Schorl  (*)TourmalineNaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)26426014217307,217310,217312,217315,217316,217317,217318,217319,217320,217322,217324,217326,217327,2173292705
Scorodite  (*)NoneFe3+(AsO4)·2H2O26426012173261153
Siderite  (*)CalciteFe(CO3)2642602217315,2173266417
Sillimanite  (*)Not in a structural groupAl2SiO52642603217313,217314,2173291516
Sphalerite  (*)SphaleriteZnS2642602217322,21732721482
Spodumene  (*)PyroxeneLiAlSi2O62642606217315,217317,217320,217322,217326,217328688
Stewartite  (*)StewartiteMn2+Fe3+2(PO4)2(OH)2·8H2O264260121732648
Strengite  (*)NoneFe3+(PO4)·2H2O2642601217326263
Strunzite  (*)StrunziteMn2+Fe3+2(PO4)2(OH)2·6H2O264260121732698
Tantalite-(Mn)  (*)ColumbiteMn2+Ta2O62642603217322,217326,217327211
Tantalowodginite  (*)Columbite(Mn,   )TaTa2O826426012173261
Tenorite  (*)NoneCuO26426012173221101
Todorokite  (*)None(Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12·3-4H2O2642603217315,217317,217326433
Topaz  (*)TopazAl2SiO4F22642603217317,217322,2173271476
Torbernite  (*)NoneCu(UO2)2(PO4)2·12H2O26426012173291059
Triphylite  (*)OlivineLiFe2+(PO4)2642602217315,217327313
Uraninite  (*)FluoriteUO22642603217322,217324,2173262718
Uranophane-α  (*)NoneCa(UO2)2(SiO3OH)2·5H2O2642601217322890
Vesuvianite  (*)Vesuvianite(Ca,Na)19(Al,Mg,Fe)13(SiO4)10(Si2O7)4(OH,F,O)102642603217315,217317,2173221395
Vivianite  (*)VivianiteFe2+3(PO4)2·8H2O2642603217315,217317,217326636
Wodginite  (*)ColumbiteMn2+Sn4+Ta2O8264260121732678
Wölsendorfite  (*)WölsendorfitePb7(UO2)14O19(OH)4·12H2O264260121732243
Zircon  (*)ZirconZr(SiO4)2642608217312,217315,217317,217318,217322,217326,217327,2173295251


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
Alexandra-0187264260264–260Ar-ArAge of pegmatitemuscovite11Dw304a, 11Dw305a YesMuscovite  3784Mount Mica Quarry (Mount Mica Mine), Paris, Oxford Co., Maine, USAMount MicaBradley et al. (2016)10.3749/canmin.1600035CM54_945 

SampleSource LocalityReference URL
FKM-198Greenwood, Oxford Co., Maine, USAhttps://www.rockptx.com/fkm-176-to-fkm-200/#FKM-198
R110142Emmons Quarry (Uncle Tom Mountain Quarry), Uncle Tom Mountain, Greenwood, Oxford Co., Maine, USAhttps://rruff.info/R110142

All locality data graciously provided by mindat.org

All age data...

Other copyright data...