Mineral Species sorted by the element Pr Praeseodymium (original) (raw)

Praeseodymium (Pr) Element Properties

Atomic Mass 140.90765
Atomic Number 59
Name Origins Greek, prasios didymos = "green twin"
Year Discovered 1885
Discovery Credits Separated by Baron Auer von Welsbach at Vienna, Austria.
Remarks Soft, malleable, silvery metal of the lanthanide group. Reacts slowly with oxygen, rapidly with water. Used in alloys for permanent magnets, flints, yellow glass for eye protection for welders, etc.Diagnostic tests: There are no simple diagnostic tests to identify praeseodymium. X-ray fluorescence spectroscopy is commonly employed to identify and analyze members of the Rare-Earth group elements.
References Emsley, J., 1991; THE ELEMENTS : Sec. Ed., Clarendon Press, Oxford, 251 p.
See Also WebElements,ChemiCool

Naturally Occurring Isotopes

Symbol Isotope Mass Isotope Nuclide Number Isotope Number Natural Abundance Half-life Half-life Units Decay Mode Decay Mode MeV Decay Mode %
Pr 140.907648 141 59 100.0000% Stable

Mineral Species sorted by the element Pr (Praeseodymium )

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%Pr Mineral Name Chemical Formula MW
6.89%Pr Paratooite-(La) ! REE3(Ca,Sr)2NaCu(CO3)8 2,146.77
6.87%Pr Kozoite-(Nd) ! (Nd,La,Sm,Pr)(CO3)(OH) 205.20
6.11%Pr Wakefieldite-(La) ! LaVO4 253.60
4.94%Pr Fergusonite-beta-(Nd) (Nd,Ce)NbO4 285.36
4.88%Pr Fergusonite-beta-(Ce) (Ce,La,Nd)NbO4 288.78
3.69%Pr Kozoite-(La) ! La(CO3)(OH) 190.98
3.11%Pr Fluorbritholite-(Ce) (Ca,Ce,La,Na)5(SiO4,PO4)3(OH,F) 769.69
3.10%Pr Aluminocerite-(Ce) ! (Ce,REE,Ca)9(Al,Fe+++)(SiO4)3[SiO3(OH)]4(OH)3 1,725.28
2.96%Pr Astrocyanite-(Ce) Cu2(Ce,Nd,La)2(UO2)(CO3)5(OH)2•1.5(H2O) 951.38
2.93%Pr Galgenbergite-(Ce) ! Ca(REE)2(CO3)4•(H2O) 577.84
2.86%Pr Percleveite-(Ce) ! (Ce,La,Nd)2Si2O7 442.72
2.68%Pr Allanite-(La) ! Ca(REE,Ca)Al2(Fe++,Fe+++)(SiO4)(Si2O7)O(OH) 557.74
2.30%Pr Biraite-(Ce) ! Ce2Fe++(CO3)(Si2O7) 551.07
2.24%Pr Polyakovite-(Ce) ! (Ce,La,Nd,Pr,Ca)4(Mg,Fe++)(Cr,Fe+++)2(Ti,Nb)2Si4O22 1,255.42
2.15%Pr Ilimaussite-(Ce) (Ba,Na)10K3Na4.5Ce5(Nb,Ti)6[Si12O36][Si9O18(O,OH)24]O6 4,253.30
2.11%Pr Zugshunstite-(Ce) ! (Ce,Nd,La)Al(SO4)2(C2O4)•8(H2O) 667.51
2.10%Pr Petersenite-(Ce) (Na,Ca)4(Ce,La,Nd)2(CO3)5 672.29
1.86%Pr Tundrite-(Ce) Na2Ce2TiO2(SiO4)(CO3)2 614.89
1.84%Pr Hingganite-(Ce) (Ce,Ca)2([ ],Fe)Be2Si2O8[(OH),O]2 460.63
1.80%Pr Vastmanlandite-(Ce) ! (Ce,La)3CaAl2Mg2[Si2O7][SiO4]3F(OH)2 1,094.51
1.69%Pr Uedaite-(Ce) ! Mn++CeAl2Fe++(Si2O7)(SiO4)O(OH) 584.87
1.61%Pr Haleniusite-(La) ! (La,Ce)OF 174.90
1.59%Pr Fluorcalciobritholite ! (Ca,REE)5[(Si,P)O4]3F 710.23
1.48%Pr Qaqarssukite-(Ce) ! Ba(Ce,REE)(CO3)2F 379.62
1.48%Pr Proshchenkoite-(Y) ! (Y,REE,Ca,Na,Mn)15Fe++Ca(P,Si)Si6B3(O,F)48 2,711.51
1.36%Pr Zajacite-(Ce) Na(REExCa1-x)(REEyCa1-y)F6where(xney) 295.08
1.32%Pr Gatelite-(Ce) ! (Ca,Ce,La,Nd)4(Al,Mg,Fe)4[Si2O7][SiO4]3(O,F,OH)3 1,067.70
1.30%Pr Maoniupingite-(Ce) ! (REE,Ca)4(Fe+++,Ti,Fe++,[])(Ti,Fe+++,Fe++,Nb)4Si4O22 1,228.90
1.22%Pr Calcybeborosilite-(Y) ! (REE,Ca)2[](B,Be)2(SiO4)2(OH,O)2 437.09
1.15%Pr Chukhrovite-(Nd) ! Ca3(Nd,Y)Al2(SO4)F13•12(H2O) 857.24
1.13%Pr Calciogadolinite ? CaREE(Fe+++)Be2Si2O10 474.11
1.09%Pr Kentbrooksite ! (Na,REE)15(Ca,REE)6Mn++Zr3NbSi25O74F2•2(H2O) 3,900.86
1.09%Pr Abenakiite-(Ce) Na26REE6(SiO3)6(PO4)6(CO3)6(S++++O2)O 2,928.18
1.09%Pr Bussyite-(Ce) ! (Ce,REE)3(Na,H2O)6MnSi9Be5(O,OH)30F4 1,329.21
1.06%Pr Hundholmenite-(Y) ! (Y,REE,Ca,Na)15(Al,Fe+++)CaxAs+++1-x(Si,As+++++)Si6B3(O,F)48 2,521.06
1.00%Pr Johnsenite-(Ce) ! Na12(Ce,REE,Sr)3Ca6Mn3Zr3W(Si25O73)(CO3)(OH,Cl)2 3,374.09
0.99%Pr Thomasclarkite-(Y) ! (Na,Ce)(Y,REE)(HCO3)(OH)3•4(H2O) 375.77
0.99%Pr Orthojoaquinite-(La) ! Ba2Na(La,Ce)2Fe++Ti2Si8O26(OH,O,F)•H2O 1,429.39
0.88%Pr Ferronordite-(La) ! Na3Sr(La,Ce)FeSi6O17 800.84
0.80%Pr Calcioburbankite Na3(Ca,REE,Sr)3(CO3)5 597.04
0.70%Pr Kukharenkoite-(La) ! Ba2(La,Ce)(CO3)3F 605.99
0.63%Pr IMA2008-024 ! (Ca,Na,REE,[])7(Nb,Ti)[Si2O7]2OF3 841.27
0.62%Pr Diversilite-(Ce) ! Na2(Ba,K)6Ce2Fe++Ti3Si12O36(OH)3(OH,H2O)9 2,272.68
0.61%Pr Khristovite-(Ce) (Ca,REE)(Ce,REE)(Mg,Fe,Cr,Ti,V,Al)Mn++Al(SiO4)(Si2O7)(OH)(F,O) 610.88
0.58%Pr IMA2009-001 Ba5(Ca,REE,Y)22(Ti,Nb)18(SiO4)4[(PO4),(SiO4)]4(BO3)9O22[(OH),F]43(H2O)1.5 4,586.47
0.58%Pr Dissakisite-(Ce) Ca(Ce,REE)(Mg,Fe++)(Al,Fe+++)2Si3O12(OH) 599.36
0.56%Pr Piergorite-(Ce) ! Ca8Ce2(Al0.5 Fe+++0.5)([ ],Li,Be)2Si6B8O36(OH,F)2 1,498.89
0.56%Pr Trimounsite-(Y) (Y,REE)2Ti2SiO9 475.18
0.54%Pr Cerite-(La) ! (La,Ce,Ca)9(Mg,Fe+++)(SiO4)6[SiO3(OH)](OH)3 1,825.93
0.52%Pr Hellandite-(Y) (Ca,REE)4(Y,Ce)2(Al,[])2[Si4B4O22](OH)2 1,029.47
0.49%Pr Kamphaugite-(Y) (Ca1.84REEx)(Y1.46REE0.54-x)(CO3)4(OH)1.65•2(H2O) 585.44
0.49%Pr Nioboaeschynite-(Y) ! [(Y,**RE**E),Ca,Th,Fe](Nb,Ti,Ta)2(O,OH)6 368.70
0.49%Pr Dissakisite-(La) ! (Ca,Fe++,Th,La)(La,REE,Ca)(Al,Cr,Ti)2(Mg,Fe,Al)Si3O12(OH,F)withLa>Ce 551.33
0.48%Pr Hellandite-(Ce) ! (Ca3REE)4Ce2Al[]2[Si4B4O22](OH)2 1,114.02
0.47%Pr Strontiochevkinite (Sr,REE)4Fe(Ti,Zr)2Ti2Si4O22 1,140.23
0.46%Pr Gerenite-(Y) ! (Ca,Na)2(Y,REE)3Si6O18•2(H2O) 872.18
0.43%Pr Sazhinite-(La) ! Na3La[Si6O15]•2(H2O) 652.93
0.38%Pr IMA2009-005 (Y,Ca,REE)5[(Si,P)O4]3F 696.25
0.38%Pr Ciprianiite ! Ca4[(Th,U)(REE)]2(Al,[])2[Si4B4O22](OH,F)2 1,032.51
0.32%Pr Hingganite-(Y) Y2([ ])Be2Si2O8(OH)2 433.65
0.23%Pr Kuliokite-(Y) (Y,REE)4Al(SiO4)2(OH)2F5 706.82
0.23%Pr Carbokentbrooksite ! (Na,[ ])12(Na,Ce)3Ca6Mn3Zr3Nb(Si25O73)(OH)3(CO3)•H2O 3,121.55
0.20%Pr Cerotungstite-(Ce) (Ce,REE)W2O6(OH)3 655.80
0.16%Pr Decrespignyite-(Y) ! (Y,REE)4Cu(CO3)4Cl(OH)5•2(H2O) 867.49
0.16%Pr Calciopetersite ! CaCu6[(PO4)2(PO3OH)(OH)6]•3(H2O) 907.06
0.15%Pr Bijvoetite-(Y) (Y,REE)8(H2O)25(UO2)16O8(OH)8(CO3)16•14(H2O) 7,068.68
0.13%Pr Plumboagardite ! (Pb,REE,Ca)Cu6(AsO4)3(OH)6•3(H2O) 1,097.39
0.12%Pr Mckelveyite-(Nd) * (Ba,Sr)(Ca,Na,Nd,REE)(CO3)2•3-10(H2O) 456.93
0.10%Pr Miserite K1.5-x(Ca,Y,REE)5[Si6O15][Si2O7](OH,F)2•yH2O 933.24
0.10%Pr Georgbarsanovite ! Na12(Mn,Sr,REE)3Ca6Fe++3Zr3NbSi25O76Cl2•H2O 3,297.19
0.08%Pr Kapitsaite-(Y) ! (Ba,K,Pb,Na)4(Y,Ca,REE)2[Si8B2(B,Si)2O28F] 1,419.80
0.07%Pr Mckelveyite-(Y) NaCa(Ba,Sr)3(Y,REE)(CO3)6•3(H2O) 971.59
0.05%Pr Samarskite-(Yb) ! (Yb,Y,REE,U,Th,Ca,Fe++)(Nb,Ta,Ti)O4 312.29

(* - Mineral Name Is Not IMA Approved)
(! - New Dana classification added or changed from Danas New Mineralogy)
(? - IMA Discredited Mineral Species Name)

There are 73 minerals with Pr in the Mineralogy Database.