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REE-Nb-Zr occurrence, Pennington Mountain, Aroostook County, Maine, USAi
Regional Level Types
REE-Nb-Zr occurrenceOccurrence
Pennington MountainMountain
Aroostook CountyCounty
MaineState
USACountry

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Latitude & Longitude (WGS84):
46° 59' 33'' North , 68° 27' 42'' West
Latitude & Longitude (decimal):
46.99264,-68.46183
GeoHash:
G#: f2r764exg
GRN:
N32W34
Type:
Occurrence
KΓΆppen climate type:
Dfb : Warm-summer humid continental climate
Nearest Settlements:
PlacePopulationDistance
Winterville204 (2017)8.7km
Eagle Lake625 (2017)11.0km
Wallagrass583 (2017)18.3km
Stockholm282 (2017)25.0km
Perham451 (2017)26.0km
Mindat Locality ID:
426175
Long-form identifier:
mindat:1:2:426175:2
GUID (UUID V4):
804744c1-46c4-42f1-a3b0-ec664be5f144


This occurrence was newly discovered by a regional multiparameter, airborne radiometric survey that revealed anomalously high equivalent Th (eTh) and U (eU), confirmed by a detailed ground radiometric survey and by portable X-Ray fluorescence (pXRF) and whole-rock analyses of representative rock samples. The mineralized area occurs within an elongate trachyte body (~1.2 km2) that intrudes Ordovician volcanic rocks. Geologic constraints suggest that the trachyte is also Ordovician in age. The eastern lobe (~900 Γ— ~400 m) of the trachyte is pervasively brecciated with a matrix containing seams, lenses, and veinlets composed mainly of potassium feldspar, albite, and fine-grained zircon and monazite. Barite is locally abundant. Minor minerals within the matrix include columbite, bastnΓ€site, euxenite, chlorite, pyrite, sphalerite, and magnetite. The pXRF analyses of 22 samples collected from the eastern lobe demonstrate that this entire part of the trachyte is highly mineralized.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


22 valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

β“˜ 'Aeschynite'
β“˜ Albite
Formula: Na(AlSi3O8)
β“˜ 'Allanite Group'
Formula: (A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)
β“˜ Baryte
Formula: BaSO4
β“˜ 'BastnΓ€site'
Formula: (Ce/Nd/Y/REE)(CO3)F
β“˜ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
β“˜ Cassiterite
Formula: SnO2
β“˜ 'Chlorite Group'
β“˜ 'Clay minerals'
β“˜ 'Columbite-(Fe)-Columbite-(Mn) Series'
β“˜ Eudialyte
Formula: Na15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2
β“˜ Euxenite-(Y)
Formula: (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
β“˜ 'Feldspar Group'
β“˜ 'Feldspar Group var. Perthite'
β“˜ Fersmite
Formula: (Ca,Ce,Na)(Nb,Ta,Ti)2(O,OH,F)6
β“˜ Fluorite
Formula: CaF2
β“˜ Galena
Formula: PbS
β“˜ Hematite
Formula: Fe2O3
β“˜ 'Hornblende Root Name Group'
Formula: ◻Ca2(Z2+4Z3+)(AlSi7O22)(OH,F,Cl)2
β“˜ Jarosite
Formula: KFe3+3(SO4)2(OH)6
β“˜ 'K Feldspar'
β“˜ Loparite-(Ce)
Formula: (Na,REE)2Ti2O6
β“˜ Lueshite
Formula: NaNbO3
β“˜ Magnetite
Formula: Fe2+Fe3+2O4
β“˜ 'Monazite'
Formula: REE(PO4)
β“˜ Natroniobite
Formula: NaNbO3
β“˜ 'Parisite'
Formula: Ca(Ce/La/Nd/REE)2(CO3)3F2
β“˜ Prehnite
Formula: Ca2Al2Si3O10(OH)2
β“˜ 'Pumpellyite Subgroup'
Formula: Ca2XAl2[Si2O6(OH)][SiO4](OH)2A
β“˜ Pyrite
Formula: FeS2
β“˜ 'Pyrochlore Supergroup'
Formula: A2-mD2X6-wZ1-n
β“˜ 'Pyrochlore Supergroup var. Betafite (of Hogarth 1977)'
Formula: (Ca,Na,U)2(Ti, Nb,Ta)2O6Z(OH)
β“˜ Quartz
Formula: SiO2
β“˜ 'Rhombohedral Carbonate'
Formula: (Ca/Mg/Fe/Mn etc)CO3
β“˜ Rutile
Formula: TiO2
β“˜ Rutile var. Ilmenorutile
Formula: (Ti,Nb)O2
β“˜ Siderite
Formula: FeCO3
β“˜ Sphalerite
Formula: ZnS
β“˜ 'Synchysite'
Formula: Ca(Ce/Nd/Y/REE)(CO3)2F
β“˜ Thorite
Formula: Th(SiO4)
β“˜ Zircon
Formula: Zr(SiO4)

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
β“˜Sphalerite2.CB.05aZnS
β“˜Galena2.CD.10PbS
β“˜Pyrite2.EB.05aFeS2
Group 3 - Halides
β“˜Fluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
β“˜Magnetite4.BB.05Fe2+Fe3+2O4
β“˜Hematite4.CB.05Fe2O3
β“˜Natroniobite4.CC.30NaNbO3
β“˜Lueshite4.CC.30NaNbO3
β“˜Loparite-(Ce)4.CC.35(Na,REE)2Ti2O6
β“˜Quartz4.DA.05SiO2
β“˜Rutile
var. Ilmenorutile		4.DB.05(Ti,Nb)O2
β“˜4.DB.05TiO2
β“˜Cassiterite4.DB.05SnO2
β“˜Euxenite-(Y)4.DG.05(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
β“˜Fersmite4.DG.05(Ca,Ce,Na)(Nb,Ta,Ti)2(O,OH,F)6
Group 5 - Nitrates and Carbonates
β“˜Siderite5.AB.05FeCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
β“˜Baryte7.AD.35BaSO4
β“˜Jarosite7.BC.10KFe3+3(SO4)2(OH)6
Group 9 - Silicates
β“˜Thorite9.AD.30Th(SiO4)
β“˜Zircon9.AD.30Zr(SiO4)
β“˜Eudialyte9.CO.10Na15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2
β“˜Prehnite9.DP.20Ca2Al2Si3O10(OH)2
β“˜Albite9.FA.35Na(AlSi3O8)
Unclassified
β“˜'Hornblende Root Name Group'-β—»Ca2(Z2+4Z3+)(AlSi7O22)(OH,F,Cl)2
β“˜'Parisite'-Ca(Ce/La/Nd/REE)2(CO3)3F2
β“˜'Pyrochlore Supergroup'-A2-mD2X6-wZ1-n
β“˜'Feldspar Group
var. Perthite'		-
β“˜'Allanite Group'-(A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)
β“˜'Columbite-(Fe)-Columbite-(Mn) Series'-
β“˜'K Feldspar'-
β“˜'Synchysite'-Ca(Ce/Nd/Y/REE)(CO3)2F
β“˜'Aeschynite'-
β“˜'Pumpellyite Subgroup'-Ca2XAl2[Si2O6(OH)][SiO4](OH)2A
β“˜'Monazite'-REE(PO4)
β“˜'Feldspar Group'-
β“˜'Clay minerals'-
β“˜'Chlorite Group'-
β“˜'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
β“˜'Pyrochlore Supergroup
var. Betafite (of Hogarth 1977)'		-(Ca,Na,U)2(Ti, Nb,Ta)2O6Z(OH)
β“˜'BastnΓ€site'-(Ce/Nd/Y/REE)(CO3)F
β“˜'Rhombohedral Carbonate'-(Ca/Mg/Fe/Mn etc)CO3

List of minerals for each chemical element

HHydrogen
Hβ“˜ Pyrochlore Supergroup var. Betafite (of Hogarth 1977)(Ca,Na,U)2(Ti, Nb,Ta)2O6Z(OH)
Hβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Hβ“˜ EudialyteNa15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2
Hβ“˜ Fersmite(Ca,Ce,Na)(Nb,Ta,Ti)2(O,OH,F)6
Hβ“˜ JarositeKFe33+(SO4)2(OH)6
Hβ“˜ PrehniteCa2Al2Si3O10(OH)2
Hβ“˜ Pumpellyite SubgroupCa2XAl2[Si2O6(OH)][SiO4](OH)2A
Hβ“˜ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
Hβ“˜ Allanite Group(A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)
CCarbon
Cβ“˜ BastnΓ€site(Ce/Nd/Y/REE)(CO3)F
Cβ“˜ SideriteFeCO3
Cβ“˜ ParisiteCa(Ce/La/Nd/REE)2(CO3)3F2
Cβ“˜ SynchysiteCa(Ce/Nd/Y/REE)(CO3)2F
Cβ“˜ Rhombohedral Carbonate(Ca/Mg/Fe/Mn etc)CO3
OOxygen
Oβ“˜ AlbiteNa(AlSi3O8)
Oβ“˜ BaryteBaSO4
Oβ“˜ BastnΓ€site(Ce/Nd/Y/REE)(CO3)F
Oβ“˜ Pyrochlore Supergroup var. Betafite (of Hogarth 1977)(Ca,Na,U)2(Ti, Nb,Ta)2O6Z(OH)
Oβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Oβ“˜ CassiteriteSnO2
Oβ“˜ EudialyteNa15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2
Oβ“˜ Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Oβ“˜ Fersmite(Ca,Ce,Na)(Nb,Ta,Ti)2(O,OH,F)6
Oβ“˜ HematiteFe2O3
Oβ“˜ Rutile var. Ilmenorutile(Ti,Nb)O2
Oβ“˜ JarositeKFe33+(SO4)2(OH)6
Oβ“˜ Loparite-(Ce)(Na,REE)2Ti2O6
Oβ“˜ LueshiteNaNbO3
Oβ“˜ MagnetiteFe2+Fe23+O4
Oβ“˜ MonaziteREE(PO4)
Oβ“˜ NatroniobiteNaNbO3
Oβ“˜ PrehniteCa2Al2Si3O10(OH)2
Oβ“˜ Pumpellyite SubgroupCa2XAl2[Si2O6(OH)][SiO4](OH)2A
Oβ“˜ QuartzSiO2
Oβ“˜ RutileTiO2
Oβ“˜ SideriteFeCO3
Oβ“˜ ThoriteTh(SiO4)
Oβ“˜ ZirconZr(SiO4)
Oβ“˜ ParisiteCa(Ce/La/Nd/REE)2(CO3)3F2
Oβ“˜ SynchysiteCa(Ce/Nd/Y/REE)(CO3)2F
Oβ“˜ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
Oβ“˜ Allanite Group(A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)
Oβ“˜ Rhombohedral Carbonate(Ca/Mg/Fe/Mn etc)CO3
FFluorine
Fβ“˜ BastnΓ€site(Ce/Nd/Y/REE)(CO3)F
Fβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Fβ“˜ Fersmite(Ca,Ce,Na)(Nb,Ta,Ti)2(O,OH,F)6
Fβ“˜ FluoriteCaF2
Fβ“˜ ParisiteCa(Ce/La/Nd/REE)2(CO3)3F2
Fβ“˜ SynchysiteCa(Ce/Nd/Y/REE)(CO3)2F
Fβ“˜ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
NaSodium
Naβ“˜ AlbiteNa(AlSi3O8)
Naβ“˜ Pyrochlore Supergroup var. Betafite (of Hogarth 1977)(Ca,Na,U)2(Ti, Nb,Ta)2O6Z(OH)
Naβ“˜ EudialyteNa15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2
Naβ“˜ Fersmite(Ca,Ce,Na)(Nb,Ta,Ti)2(O,OH,F)6
Naβ“˜ Loparite-(Ce)(Na,REE)2Ti2O6
Naβ“˜ LueshiteNaNbO3
Naβ“˜ NatroniobiteNaNbO3
MgMagnesium
Mgβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Mgβ“˜ Rhombohedral Carbonate(Ca/Mg/Fe/Mn etc)CO3
AlAluminium
Alβ“˜ AlbiteNa(AlSi3O8)
Alβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Alβ“˜ PrehniteCa2Al2Si3O10(OH)2
Alβ“˜ Pumpellyite SubgroupCa2XAl2[Si2O6(OH)][SiO4](OH)2A
Alβ“˜ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
SiSilicon
Siβ“˜ AlbiteNa(AlSi3O8)
Siβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Siβ“˜ EudialyteNa15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2
Siβ“˜ PrehniteCa2Al2Si3O10(OH)2
Siβ“˜ Pumpellyite SubgroupCa2XAl2[Si2O6(OH)][SiO4](OH)2A
Siβ“˜ QuartzSiO2
Siβ“˜ ThoriteTh(SiO4)
Siβ“˜ ZirconZr(SiO4)
Siβ“˜ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
Siβ“˜ Allanite Group(A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)
PPhosphorus
Pβ“˜ MonaziteREE(PO4)
SSulfur
Sβ“˜ BaryteBaSO4
Sβ“˜ GalenaPbS
Sβ“˜ JarositeKFe33+(SO4)2(OH)6
Sβ“˜ PyriteFeS2
Sβ“˜ SphaleriteZnS
ClChlorine
Clβ“˜ EudialyteNa15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2
Clβ“˜ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
KPotassium
Kβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Kβ“˜ JarositeKFe33+(SO4)2(OH)6
CaCalcium
Caβ“˜ Pyrochlore Supergroup var. Betafite (of Hogarth 1977)(Ca,Na,U)2(Ti, Nb,Ta)2O6Z(OH)
Caβ“˜ EudialyteNa15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2
Caβ“˜ Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Caβ“˜ Fersmite(Ca,Ce,Na)(Nb,Ta,Ti)2(O,OH,F)6
Caβ“˜ FluoriteCaF2
Caβ“˜ PrehniteCa2Al2Si3O10(OH)2
Caβ“˜ Pumpellyite SubgroupCa2XAl2[Si2O6(OH)][SiO4](OH)2A
Caβ“˜ ParisiteCa(Ce/La/Nd/REE)2(CO3)3F2
Caβ“˜ SynchysiteCa(Ce/Nd/Y/REE)(CO3)2F
Caβ“˜ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
Caβ“˜ Rhombohedral Carbonate(Ca/Mg/Fe/Mn etc)CO3
TiTitanium
Tiβ“˜ Pyrochlore Supergroup var. Betafite (of Hogarth 1977)(Ca,Na,U)2(Ti, Nb,Ta)2O6Z(OH)
Tiβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Tiβ“˜ Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Tiβ“˜ Fersmite(Ca,Ce,Na)(Nb,Ta,Ti)2(O,OH,F)6
Tiβ“˜ Rutile var. Ilmenorutile(Ti,Nb)O2
Tiβ“˜ Loparite-(Ce)(Na,REE)2Ti2O6
Tiβ“˜ RutileTiO2
MnManganese
Mnβ“˜ Rhombohedral Carbonate(Ca/Mg/Fe/Mn etc)CO3
FeIron
Feβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Feβ“˜ EudialyteNa15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2
Feβ“˜ HematiteFe2O3
Feβ“˜ JarositeKFe33+(SO4)2(OH)6
Feβ“˜ MagnetiteFe2+Fe23+O4
Feβ“˜ PyriteFeS2
Feβ“˜ SideriteFeCO3
Feβ“˜ Rhombohedral Carbonate(Ca/Mg/Fe/Mn etc)CO3
ZnZinc
Znβ“˜ SphaleriteZnS
YYttrium
Yβ“˜ BastnΓ€site(Ce/Nd/Y/REE)(CO3)F
Yβ“˜ Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Yβ“˜ SynchysiteCa(Ce/Nd/Y/REE)(CO3)2F
ZrZirconium
Zrβ“˜ EudialyteNa15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2
Zrβ“˜ ZirconZr(SiO4)
NbNiobium
Nbβ“˜ Pyrochlore Supergroup var. Betafite (of Hogarth 1977)(Ca,Na,U)2(Ti, Nb,Ta)2O6Z(OH)
Nbβ“˜ Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Nbβ“˜ Fersmite(Ca,Ce,Na)(Nb,Ta,Ti)2(O,OH,F)6
Nbβ“˜ Rutile var. Ilmenorutile(Ti,Nb)O2
Nbβ“˜ LueshiteNaNbO3
Nbβ“˜ NatroniobiteNaNbO3
SnTin
Snβ“˜ CassiteriteSnO2
BaBarium
Baβ“˜ BaryteBaSO4
LaLanthanum
Laβ“˜ ParisiteCa(Ce/La/Nd/REE)2(CO3)3F2
CeCerium
Ceβ“˜ BastnΓ€site(Ce/Nd/Y/REE)(CO3)F
Ceβ“˜ Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Ceβ“˜ Fersmite(Ca,Ce,Na)(Nb,Ta,Ti)2(O,OH,F)6
Ceβ“˜ ParisiteCa(Ce/La/Nd/REE)2(CO3)3F2
Ceβ“˜ SynchysiteCa(Ce/Nd/Y/REE)(CO3)2F
NdNeodymium
Ndβ“˜ BastnΓ€site(Ce/Nd/Y/REE)(CO3)F
Ndβ“˜ ParisiteCa(Ce/La/Nd/REE)2(CO3)3F2
Ndβ“˜ SynchysiteCa(Ce/Nd/Y/REE)(CO3)2F
TaTantalum
Taβ“˜ Pyrochlore Supergroup var. Betafite (of Hogarth 1977)(Ca,Na,U)2(Ti, Nb,Ta)2O6Z(OH)
Taβ“˜ Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Taβ“˜ Fersmite(Ca,Ce,Na)(Nb,Ta,Ti)2(O,OH,F)6
PbLead
Pbβ“˜ GalenaPbS
ThThorium
Thβ“˜ Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Thβ“˜ ThoriteTh(SiO4)
UUranium
Uβ“˜ Pyrochlore Supergroup var. Betafite (of Hogarth 1977)(Ca,Na,U)2(Ti, Nb,Ta)2O6Z(OH)
Uβ“˜ Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

[1]Chunzeng Wang, John F. Slack, Anjana K. Shah, Martin G. Yates, David R. Lentz, Amber T.H. Whittaker, Robert G. Marvinney; A RECENTLY DISCOVERED TRACHYTE-HOSTED RARE EARTH ELEMENT-NIOBIUM-ZIRCONIUM OCCURRENCE IN NORTHERN MAINE, USA. Economic Geology 2022; doi: https://doi.org/10.5382/econgeo.4993
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