cerium — Ce
Het chemische element cerium is een element van het type Metalen lanthaniden met symbool Ce. Het heeft een atoommassa van 140.116 u en een elektronenconfiguratie [Xe] 4f1 5d1 6s2.
Synthétique
Radioactif
Liquide
Gaz
798°
3257°
3257°
140.116
58
2
3
4
3
4
Ce
2
8
18
19
9
2
8
18
19
9
2
[Xe] 4f1 5d1 6s2
1.12
5.5387
Diagram van elektronenconfiguratie
kenmerken
- Atoomnummer
- 58
- Atoommassa
- 140.116
- Symbool
- Ce
- Smeltpunt
- 798
- Kookpunt
- 3257
- Dichtheid
- 6.77
- Periode
- 6
- Groep
- 0
- Ontdekking
- 1803 Berzelius
- Overvloed
- 66.5
- Straal
- 2.7
- Elektronegativiteit
- 1.12
- Ionisatie
- 5.5387
- Isotoop
- 19
- Elektronenconfiguratie
- [Xe] 4f1 5d1 6s2
- Oxidatietoestand
- 2,3,4
- Elektron
- 2,8,18,19,9,2
Cerium is een zwaar metaal dat behoort tot de lanthanidefamilie en de chemische reeks actiniden. Het is het meest voorkomende splijtingsmetaal op aarde en het meest reactieve chemische element in zijn reeks.
cerium is een zeer kneedbaar en kneedbaar zilvergrijs metaal. Het heeft een relatief hoog smeltpunt (1037°C) en een kookpunt van 3500°C. De dichtheid is ongeveer 6,77 g/cm3 en de atoommassa is 140,1 g/mol.
cerium is een relatief reactief metaal en wordt geclassificeerd als een zwaar metaal. Het is zeer kneedbaar en ductiel en kan worden gelegeerd met andere metalen en materialen om de mechanische en fysieke eigenschappen te verbeteren. cerium is ook zeer vuurvast en corrodeert niet gemakkelijk in een oxiderende omgeving.
cerium wordt gebruikt in een verscheidenheid aan toepassingen, met name in de verbrandingsmotorindustrie. Het wordt ook gebruikt in legeringen, elektronica, smeermiddelen, damplampen en katalysatoren. cerium wordt ook gebruikt in vuurvaste materialen en superlegeringen voor de lucht- en ruimtevaart- en auto-industrie.
Mineralen die cerium bevatten
| voornaam | Hardheid | Dichtheid | Chemische formule |
|---|---|---|---|
| Abenakiite-(Ce) | — | 3.21 | Na26Ce6(SiO3)6(PO4)6(CO3)6(SO2)O |
| Aeschynite-(Ce) | — | 5.19 | (Ce,Ca,Fe,Th)(Ti,Nb)2(O,OH)6 |
| Aeschynite-(Nd) | — | 4.60 | Nd(Ti,Nb)2(O,OH)6 |
| Agardite-(Ce) | — | 3.72 | Cu2+6Ce(AsO4)3(OH)6·3H2O |
| Allaniet | — | 3.30 | CaCeAl2Fe2+(Si2O7)(SiO4)O(OH) |
| Allanite-(La) | — | 3.93 | CaLaAl2Fe2+(Si2O7)(SiO4)O(OH) |
| Allanite-(Y) | — | 3.30 | CaYAl2Fe2+(Si2O7)(SiO4)O(OH) |
| Alnaperbøeite-(Ce) | — | 0.00 | (CaCe2.5Na0.5)Al4(Si2O7)(SiO4)3O(OH)2 |
| Aluminocerite-(Ce) | — | 4.68 | (Ce,Ca)9Al(SiO4)3(SiO3OH)4(OH)3 |
| Ancylite-(Ce) | — | 3.90 | CeSr(CO3)2(OH)·H2O |
| Ancylite-(La) | — | 3.88 | LaSr(CO3)2(OH)·H2O |
| Andrianovite | — | 3.02 | Na12(K,Sr,Ce)3Ca6Mn3Zr3NbSi25O73(O,H2O,OH)5 |
| Anzaite-(Ce) | — | 5.05 | Ce4Fe2+Ti6O18(OH)2 |
| Arapovite | — | 3.43 | (K1-xx)(Ca,Na)2U4+Si8O20 (x~0.5) |
| Arisite-(Ce) | — | 0.00 | NaCe2(CO3)2[(CO3)1-xF2x]F |
| Arsenoflorencite-(Ce) | — | 4.10 | CeAl3(AsO4)2(OH)6 |
| Arsenoflorencite-(La) | — | 4.10 | LaAl3(AsO4)2(OH)6 |
| Arsenoflorencite-(Nd) | — | 4.05 | NdAl3(AsO4)2(OH)6 |
| Astrocyanite-(Ce) | — | 3.80 | Cu2Ce2(UO2)(CO3)5(OH)2·1.5H2O |
| Bario-olgite | — | 4.00 | Na(Na,Sr,Ce)2Ba(PO4)2 |
| Bastnäsite-(Ce) | — | 4.95 | CeCO3F |
| Belovite-(Ce) | — | 4.19 | NaCeSr3(PO4)3F |
| Belovite-(La) | — | 4.19 | NaLaSr3(PO4)3F |
| Biraite-(Ce) | — | 4.76 | Ce2Fe2+Si2O7(CO3) |
| Braitschite-(Ce) | — | 2.90 | Ca6.15Na0.85Ce2[B6O7(OH)3(O,OH)3]4·H2O |
| Brannerite | — | 4.50 | UTi2O6 |
| Britholite-(Ce) | — | 4.20 | (Ce,Ca)5(SiO4)3OH |
| Brockite | — | 3.70 | (Ca,Th,Ce)PO4·H2O |
| Burbankite | — | 3.50 | (Na,Ca)3(Sr,Ba,Ce)3(CO3)5 |
| Bussyite-(Ce) | — | 3.00 | (Na,H2O)6(Ce,REE)3Be5MnSi9(O,OH)30F4 |
| Byelorussite-(Ce) | — | 3.92 | NaBa2Ce2Mn2+Ti2Si8O26(F,OH)·H2O |
| Calcioancylite-(Ce) | — | 0.00 | (Ce,Ca,Sr)CO3(OH,H2O) |
| Calcioburbankite | — | 3.45 | Na3(Ca,Ce,Sr,La)3(CO3)5 |
| Calciopetersite | — | 3.33 | Cu2+6Ca(PO4)2(PO3OH)(OH)6·3H2O |
| Calkinsite-(Ce) | — | 3.27 | Ce2(CO3)3·4H2O |
| Cappelenite-(Y) | — | 4.40 | BaY6B6Si3O24F2 |
| Carbocernaite | — | 3.53 | (Sr,Ce,La)(Ca,Na)(CO3)2 |
| Carbokentbrooksite | — | 3.14 | (Na)12(Na,Ce)3Ca6Mn3Zr3NbSi25O73(OH)3(CO3)·H2O |
| Cebaite-(Ce) | — | 4.81 | Ba3Ce2(CO3)5F2 |
| Cebaite-(Nd) | — | 4.80 | Ba3Nd2(CO3)5F2 |
| Cerianite-(Ce) | — | 7.22 | CeO2 |
| Ceriopyrochlore-(Ce) | — | 4.13 | (Ca,Ce,Y,Na)2Nb2(O,OH,F)7 |
| Cerite-(Ce) | — | 4.86 | (Ce,La,Ca)9(Mg,Fe3+)(SiO4)3(SiO3OH)4(OH)3 |
| Cerite-(La) | — | 4.70 | (La,Ce,Ca)9(Fe3+,Ca,Mg)(SiO4)3(SiO3OH)4(OH)3 |
| Cerium | — | 0.00 | Ce |
| Cervandonite-(Ce) | — | 0.00 | (Ce,Nd,La)(Fe3+,Ti,Fe2+,Al)3O2(Si2O7)1-x+y(AsO3)1+x-y(OH)3x-3y, x=0.5, y=0.3 |
| Chevkinite-(Ce) | — | 4.50 | Ce4(Ti,Fe2+,Fe3+)5O8(Si2O7)2 |
| Christofschäferite-(Ce) | — | 4.00 | (Ce,La,Ca)4Mn(Ti,Fe)3(Fe,Ti)(Si2O7)2O8 |
| Chukhrovite-(Ce) | — | 0.00 | Ca3CeAl2(SO4)F13·10H2O |
| Chukhrovite-(Nd) | — | 2.42 | Ca3NdAl2SO4F13·12H2O |
| Chukhrovite-(Y) | — | 2.27 | Ca3YAl2(SO4)F13·10H2O |
| Cordylite-(Ce) | — | 4.44 | (Na,Ca)BaCe2(CO3)4(F,O) |
| Coskrenite-(Ce) | — | 0.00 | Ce2(SO4)2(C2O4)·8H2O |
| Crichtonite | — | 4.46 | Sr(Mn,Y,U)Fe2(Ti,Fe,Cr,V)18(O,OH)38 |
| Daqingshanite-(Ce) | — | 3.81 | Sr3CePO4(CO3)3 |
| Davidite-(Ce) | — | 4.42 | Ce(Y,U)Fe2(Ti,Fe,Cr,V)18(O,OH,F)38 |
| Davidite-(La) | — | 4.42 | La(Y,U)Fe2(Ti,Fe,Cr,V)18(O,OH,F)38 |
| Deveroite-(Ce) | — | 2.35 | Ce2(C2O4)3·10H2O |
| Dingdaohengite-(Ce) | — | 4.83 | (Ce3+,La)4Fe2+(Ti,Fe2+,Mg,Fe3+)2Ti2Si4O22 |
| Dissakisite-(Ce) | — | 3.75 | CaCeMgAl2(Si2O7)(SiO4)O(OH) |
| Dissakisite-(La) | — | 3.79 | CaLaMgAl2(Si2O7)(SiO4)O(OH) |
| Diversilite-(Ce) | — | 3.68 | Na2Ba6Ce2Fe2+Ti3Si12O36(OH)10·nH2O |
| Dollaseite-(Ce) | — | 0.00 | CaCeMg2Al(Si2O7)(SiO4)(OH)F |
| Dualite | — | 2.84 | Na30(Ca,Na,Ce,Sr)12(Na,Mn,Fe,Ti)6Zr3Ti3MnSi51O144(OH,H2O,Cl)9 |
| Dyrnaesite-(La) | — | 3.68 | Na8Ce4+(La,REE)2(PO4)6 |
| Eudialyte | — | 2.80 | Na15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2 |
| Euxenite-(Y) | — | 4.70 | (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6 |
| Ewaldite | — | 3.25 | Ba(Na,Ca,Y,Ce,K)(CO3)2·2.6H2O |
| Feklichevite | — | 2.87 | Na11Ca9(Fe3+,Fe2+)2Zr3Nb(Si25O73)(OH,H2O,Cl,O)5 |
| Fergusonite-(Ce) | — | 5.48 | CeNbO4·0.3H2O |
| Fergusonite-(Ce)- | — | 0.00 | CeNbO4 |
| Fergusonite-(Nd) | — | 4.50 | NdNbO4 |
| Ferriallanite-(Ce) | — | 4.22 | CaCeFe2+Fe3+Al(SiO4)(Si2O7)O(OH) |
| Ferronordite-(Ce) | — | 3.46 | Na3SrCeFe2+Si6O17 |
| Ferronordite-(La) | — | 3.54 | Na3SrLaFe2+Si6O17 |
| Fersmite | — | 4.69 | (Ca,Ce,Na)(Nb,Ta,Ti)2(O,OH,F)6 |
| Florencite-(Ce) | — | 3.46 | CeAl3(PO4)2(OH)6 |
| Florencite-(La) | — | 3.52 | LaAl3(PO4)2(OH)6 |
| Florencite-(Nd) | — | 3.50 | NdAl3(PO4)2(OH)6 |
| Fluocerite-(Ce) | — | 6.13 | CeF3 |
| Fluocerite-(La) | — | 5.93 | LaF3 |
| Fluorbritholite-(Ce) | — | 4.66 | (Ce,Ca)5(SiO4)3F |
| Fluorcalciobritholite | — | 4.20 | (Ca,REE)5(SiO4,PO4)3F |
| Fluorcaphite | — | 3.60 | SrCaCa3(PO4)3F |
| Françoisite-(Ce) | — | 0.00 | Ce(UO2)3(PO4)2O(OH)·6H2O |
| Françoisite-(Nd) | — | 4.06 | Nd(UO2)3(PO4)2O(OH)·6H2O |
| Gadolinite-(Ce) | — | 4.20 | Fe2+Be2Ce2(SiO4)2O2 |
| Gagarinite-(Ce) | — | 0.00 | NaCaCeF6 |
| Galgenbergite-(Ce) | — | 0.00 | CaCe2(CO3)4·H2O |
| Gasparite-(Ce) | — | 0.00 | CeAsO4 |
| Gatelite-(Ce) | — | 4.51 | (Ca,Ce)4(Al,Mg,Fe)4(Si2O7)(SiO4)3(O,F,OH)3 |
| Golyshevite | — | 2.89 | Na10Ca9Zr3Fe2SiNb(Si3O9)2(Si9O27)2(OH)3(CO3)·H2O |
| Gramaccioliite-(Y) | — | 4.66 | (Pb,Sr)(Y,Mn)Fe3+2(Ti,Fe3+)18O38 |
| Graulichite-(Ce) | — | 3.90 | CeFe3+3(AsO4)2(OH)6 |
| Håleniusite-(La) | — | 6.50 | LaOF |
| Hellandite-(Ce) | — | 0.00 | (Ca,REE)4Ce2Al(Be,Li)2-xB4Si4O22(OH)2 |
| Hellandite-(Y) | — | 3.70 | (Ca,REE)4Y2Al(Be,Li)2-xB4Si4O22(OH)2 |
| Hibonite | — | 3.84 | (Ca,Ce)(Al,Ti,Mg)12O19 |
| Hingganite-(Ce) | — | 4.28 | BeCe(SiO4)(OH) |
| Hingganite-(Y) | — | 0.00 | BeY(SiO4)(OH) |
| Huanghoite-(Ce) | — | 4.51 | BaCe(CO3)2F |
| Hydroxylbastnäsite-(Ce) | — | 4.75 | CeCO3(OH) |
| Ikranite | — | 2.82 | (Na,H3O)15(Ca,Mn,REE)6Fe3+2Zr3Si24O66(O,OH)6Cl·nH2O |
| Ilímaussite-(Ce) | — | 3.60 | (Ba,Na)10K3Na4.5Ce5(Nb,Ti)6O6(Si12O36)(Si9O18)(O,OH)24 |
| Ilmajokite | — | 2.20 | (Na,Ce,Ba)10Ti5Si14O22(OH)44·nH2O |
| Iraqite-(La) | — | 3.27 | KCa4(La,Ce,Th)2Si16O40 |
| Joaquinite-(Ce) | — | 3.62 | NaBa2Fe2+Ti2Ce2(SiO3)8O2(OH)·H2O |
| Johnsenite-(Ce) | — | 3.20 | Na12Ce3Ca6Mn3Zr3WSi25O73(CO3)(OH)2 |
| Kainosite-(Y) | — | 3.40 | Ca2Y2(SiO3)4(CO3)·H2O |
| Kapustinite | — | 2.78 | Na6ZrSi6O16(OH)2 |
| Karnasurtite-(Ce) | — | 2.89 | CeTiAlSi2O7(OH)4·3H2O |
| Kemmlitzite | — | 3.63 | SrAl3(AsO4)(SO4)(OH)6 |
| Khanneshite | — | 3.80 | (Na,Ca)3(Ba,Sr,Ce,Ca)3(CO3)5 |
| Khristovite-(Ce) | — | 4.05 | CaCeMgMn2+Al(Si2O7)(SiO4)(OH)F |
| Kihlmanite-(Ce) | — | 3.69 | Ce2TiO2(SiO4)(HCO3)2·H2O |
| Kochite | — | 3.32 | Na(Na,Ca)2Ca2(Mn,Ca)ZrTi(Si2O7)2(F,O)4 |
| Kuannersuite-(Ce) | — | 4.66 | Na2Ce2Ba6(PO4)6FCl |
| Kukharenkoite-(Ce) | — | 4.61 | Ba2Ce(CO3)3F |
| Kukharenkoite-(La) | — | 4.65 | Ba2La(CO3)3F |
| Labyrinthite | — | 2.88 | (Na,K,Sr)35Ca12Fe3Zr6TiSi51O144(O,OH,H2O)9Cl3 |
| Lakargiite | — | 4.59 | CaZrO3 |
| Lanthanite-(Ce) | — | 2.76 | Ce2(CO3)3·8H2O |
| Lanthanite-(La) | — | 2.61 | La2(CO3)3·8H2O |
| Laplandite-(Ce) | — | 2.83 | Na4CeTiPSi7O22·5H2O |
| Loparite-(Ce) | — | 4.77 | (Na,Ce,Sr)(Ce,Th)(Ti,Nb)2O6 |
| Loranskite-(Y) | — | 4.40 | (Y,Ce,Ca)(Zr,Ta)2O6 |
| Loveringite | — | 4.41 | (Ca,Ce,La)(Zr,Fe)(Mg,Fe)2(Ti,Fe,Cr,Al)18O38 |
| Lucasite-(Ce) | — | 0.00 | CeTi2O5(OH) |
| Lukechangite-(Ce) | — | 3.97 | Na3Ce2(CO3)4F |
| Manganiandrosite-(Ce) | — | 0.00 | Mn2+Ce3+AlMn3+Mn2+(Si2O7)(SiO4)O(OH) |
| Manganiandrosite-(La) | — | 4.21 | LaMn2+2Mn3+Al(Si2O7)(SiO4)O(OH) |
| Manganokukisvumite | — | 2.86 | Na6MnTi4Si8O28·4H2O |
| Manganonordite-(Ce) | — | 3.43 | Na3SrCeMn2+Si6O17 |
| Maoniupingite-(Ce) | — | 0.00 | (Ce,Ca)4(Fe3+,Ti,Fe2+)(Ti,Fe3+,Fe2+,Nb)4Si4O22 |
| Melanocerite-(Ce) | — | 4.13 | Ce5(SiO4,BO4)3(OH,O) |
| Mendeleevite-(Ce) | — | 0.00 | (Cs)6(Cs)6(K)6(Ce,Ca)30(Si70O175)(H2O,OH,F)35 |
| Menezesite | — | 4.18 | Ba3MgZr4Nb12O42·12H2O |
| Mianningite | — | 0.00 | (Pb,Ce,Na)(U4+,Mn,U6+)Fe3+2(Ti,Fe3+)18O38 |
| Mogovidite | — | 2.90 | Na9(Ca,Na)12Fe2Zr3Si25O72(CO3)(OH)4 |
| Monazite-(Ce) | — | 4.80 | CePO4 |
| Monazite-(La) | — | 4.80 | LaPO4 |
| Monazite-(Nd) | — | 4.80 | NdPO4 |
| Monazite-(Sm) | — | 5.51 | SmPO4 |
| Mosandrite | — | 3.29 | (Ca,Ce)4(Ca,Na)3Ti(Si2O7)2(H2O,OH,F)4·H2O |
| Mottanaite-(Ce) | — | 3.61 | Ca4(CeCa)AlBe2(B4Si4O22)O2 |
| Nacareniobsite-(Ce) | — | 3.45 | Na3Ca3CeNb(Si2O7)2OF3 |
| Natrokomarovite | — | 3.30 | (Na,Ca)6-xCa(Nb,Ti)6Si4O12(O,OH,F)16·nH2O |
| Nechelyustovite | — | 3.32 | (Ba,Na)2(Na,Ti,Mn)4(Ti,Nb)2Si4O14(OH,O,F)5·3H2O |
| Ningyoite | — | 4.75 | (U,Ca,Ce)2(PO4)2·1-2H2O |
| Nioboaeschynite-(Ce) | — | 5.04 | (Ce,Ca)(Nb,Ti)2(O,OH)6 |
| Nioboaeschynite-(Nd) | — | 0.00 | Nd(Nb,Ti)2(O,OH)6 |
| Nordite-(Ce) | — | 6.43 | Na3SrCeZnSi6O17 |
| Nordite-(La) | — | 3.43 | Na3SrLaZnSi6O17 |
| Orthojoaquinite-(Ce) | — | 3.68 | NaBa2Fe2+Ce2Ti2(SiO3)8O2(O,OH)·H2O |
| Orthojoaquinite-(La) | — | 4.10 | NaBa2La2Fe2+Ti2Si8O26(OH,O,F)·H2O |
| Parisite-(Ce) | — | 4.36 | CaCe2(CO3)3F2 |
| Parisite-(Nd) | — | 4.20 | CaNd2(CO3)3F2 |
| Peprossiite-(Ce) | — | 3.45 | (Ce,La)(Al3O)2/3B4O10 |
| Perbøeite-(Ce) | — | 0.00 | (CaCe3)(Al3Fe2+)(Si2O7)(SiO4)3O(OH)2 |
| Percleveite-(Ce) | — | 5.21 | Ce2Si2O7 |
| Perrierite-(Ce) | — | 4.29 | Ce4MgFe3+2Ti4+2O8(Si2O7)2 |
| Perrierite-(La) | — | 0.00 | (La,Ce,Ca)4(Fe2+,Mn)(Ti,Fe3+,Al)4(Si2O7)2O8 |
| Petersenite-(Ce) | — | 3.69 | Na4Ce2(CO3)5 |
| Petersite-(Ce) | — | 0.00 | Cu6Ce(PO4)3(OH)6·3H2O |
| Petersite-(Y) | — | 3.41 | Cu2+6Y(PO4)3(OH)6·3H2O |
| Phosinaite-(Ce) | — | 2.97 | Na13Ca2Ce(SiO3)4(PO4)4 |
| Piergorite-(Ce) | — | 0.00 | Ca8Ce2AlLiSi6B8O36(OH)2 |
| Plumboagardite | — | 3.74 | Cu2+6(Pb,La,Nd,Ce,Ca)(AsO4)3(OH)6·3H2O |
| Polezhaevaite-(Ce) | — | 4.65 | NaSrCeF6 |
| Polyakovite-(Ce) | — | 4.75 | (Ce,Ca)4MgCr2(Ti,Nb)2Si4O22 |
| Polycrase-(Y) | — | 4.97 | Y(Ti,Nb)2(O,OH)6 |
| Potassicmendeleevite-(Ce) | — | 0.00 | Cs6K6(Ce22Ca6)(Si70O175)(OH,F)20·15H2O |
| Qaqarssukite-(Ce) | — | 0.00 | BaCe(CO3)2F |
| Rémondite-(Ce) | — | 3.43 | Na3(Ce,La,Ca,Na,Sr)3(CO3)5 |
| Rémondite-(La) | — | 3.50 | Na3(La,Ce,Ca)3(CO3)5 |
| Retzian-(Ce) | — | 4.45 | Mn2+2CeAsO4(OH)4 |
| Retzian-(La) | — | 4.49 | Mn2+2LaAsO4(OH)4 |
| Retzian-(Nd) | — | 4.45 | Mn2+2Nd(AsO4)(OH)4 |
| Rhabdophane-(Ce) | — | 4.00 | CePO4·H2O |
| Rhabdophane-(La) | — | 3.94 | LaPO4·H2O |
| Rhabdophane-(Nd) | — | 4.00 | NdPO4·H2O |
| Rinkite | — | 3.50 | Na2Ca4CeTi(Si2O7)2OF3 |
| Röntgenite-(Ce) | — | 4.19 | Ca2Ce3(CO3)5F3 |
| Roumaite | — | 3.33 | (Ca,Na,Ce)7(Nb,Ti)(Si2O7)2(OH)F3 |
| Sahamalite-(Ce) | — | 4.30 | Ce2Mg(CO3)4 |
| Samarskite-(Y) | — | 5.60 | (Y,Ce,U,Fe,Nb)(Nb,Ta,Ti)O4 |
| Samarskite-(Yb) | — | 7.03 | YbNbO4 |
| Sazhinite-(Ce) | — | 2.61 | Na3CeSi6O15·2H2O |
| Sazhinite-(La) | — | 0.00 | Na3LaSi6O15·2H2O |
| Seidite-(Ce) | — | 2.76 | Na4(Ce,Sr)2TiSi8O18(O,OH,F)6·5H2O |
| Semenovite-(Ce) | — | 0.00 | (Na,Ca)9Fe2+Ce2(Si,Be)20(O,OH,F)48 |
| Stavelotite-(La) | — | 4.49 | La3Mn2+3Cu2+(Mn3+,Fe3+,Mn4+)26(Si2O7)6O30 |
| Steenstrupine-(Ce) | — | 3.40 | Na14Ce6Mn2+2Fe3+2Zr(PO4)7Si12O36(OH)2·3H2O |
| Stetindite-(Ce) | — | 5.03 | CeSiO4 |
| Stillwellite-(Ce) | — | 4.57 | CeBSiO5 |
| Strontiochevkinite | — | 5.44 | (Sr,Ce,La)4Fe2+(Ti,Zr)4O8(Si2O7)2 |
| Synchysite-(Ce) | — | 3.90 | CaCe(CO3)2F |
| Tadzhikite-(Ce) | — | 3.73 | Ca4Ce3+2Ti(B4Si4O22)(OH)2 |
| Tadzhikite-(Y) | — | 3.73 | — |
| Tancaite-(Ce) | — | 0.00 | FeCe(MoO4)3·3H2O |
| Tantalaeschynite-(Y) | — | 5.75 | Y(Ta,Ti,Nb)2O6 |
| Tanteuxenite-(Y) | — | 5.40 | Y(Ta,Nb,Ti)2(O,OH)6 |
| Taseqite | — | 3.24 | Na12Sr3Ca6Fe3Zr3NbSi25O73(O,OH,H2O)3Cl2 |
| Thomasclarkite-(Y) | — | 2.30 | NaY(HCO3)(OH)3·4H2O |
| Thorbastnäsite | — | 4.04 | ThCa(CO3)2F2·3H2O |
| Thoriopyrochlore | — | 0.00 | (Ca,Th,Na,Ce)2(Nb,Zr,Ti,Fe)2(O,OH,F)7 |
| Törnebohmite-(Ce) | — | 4.90 | Ce2Al(SiO4)2(OH) |
| Törnebohmite-(La) | — | 4.94 | La2Al(SiO4)2(OH) |
| Tritomite-(Ce) | — | 4.20 | Ce5(SiO4,BO4)3(OH,O) |
| Tundrite-(Ce) | — | 4.08 | Na2Ce2TiO2SiO4(CO3)2 |
| Uedaite-(Ce) | — | 4.19 | Mn2+CeAl2Fe2+(Si2O7)(SiO4)O(OH) |
| Uranmicrolite | — | 5.75 | (U,Ca,Ce)2Ta2(O,OH,F)7 |
| Uranpyrochlore | — | 4.80 | (Ca,U,Na,Ce)2Nb2(O,OH,F)7 |
| Vanadoandrosite-(Ce) | — | 0.00 | Mn2+CeV3+AlMn2+O(Si2O7)(SiO4)(OH) |
| Västmanlandite-(Ce) | — | 4.51 | Ce3CaMg2Al2Si5O19(OH)2F |
| Vicanite-(Ce) | — | 4.73 | (Ca,Ce,La,Th)15As5+(As3+,Na)0.5Fe3+0.7Si6B4(O,F)47 |
| Vigezzite | — | 5.54 | (Ca,Ce)(Nb,Ta,Ti)2O6 |
| Vitusite-(Ce) | — | 3.60 | Na3Ce(PO4)2 |
| Voronkovite | — | 2.97 | Na15(Na,Ca,Ce)3(Mn,Ca)3Fe3Zr3Si26O72(OH,O)4Cl·H2O |
| Wakefieldite-(Ce) | — | 4.76 | CeVO4 |
| Yakovenchukite-(Y) | — | 2.83 | K3NaCaY2Si12O30·4H2O |
| Yttrobetafite-(Y) | — | 3.65 | (Y,U,Ce)2(Ti,Nb,Ta)2(O,OH)7 |
| Yttrotungstite-(Ce) | — | 5.96 | CeW2O6(OH)3 |
| Zhonghuacerite-(Ce) | — | 4.20 | Ba2Ce(CO3)3F |
| Zirconolite | — | 4.80 | (Ca,Y)Zr(Ti,Mg,Al)2O7 |
| Zirkelite | — | 4.70 | (Ti,Ca,Zr)O2-x |
| Zirsilite-(Ce) | — | 3.15 | (Na)12(Ce,Na)3Ca6Mn3Zr3NbSi25O73(OH)3(CO3)·H2O |
| Zugshunstite-(Ce) | — | 0.00 | CeAl(SO4)2(C2O4)·12H2O |