titanio — Ti
L'elemento chimico titanio è un elemento di tipo Metallo di transizione e simbolo Ti. Ha una massa atomica di 47.867 u e una configurazione elettronica [Ar] 3d2 4s2.
Synthétique
Radioactif
Liquide
Gaz
1660°
3260°
3260°
47.867
22
-1
2
3
4
2
3
4
Ti
2
8
10
2
8
10
2
[Ar] 3d2 4s2
1.54
6.8281
Diagramma di configurazione elettronica
caratteristiche
- Numero atomico
- 22
- Massa atomica
- 47.867
- Simbolo
- Ti
- Punto di fusione
- 1660
- Punto di ebollizione
- 3260
- Densità
- 4.54
- Periodo
- 4
- Gruppo
- 4
- Scoperta
- 1791 Gregor
- Abbondanza
- 5650
- Raggio
- 2
- Elettronegatività
- 1.54
- Ionizzazione
- 6.8281
- Isotopo
- 9
- Configurazione elettronica
- [Ar] 3d2 4s2
- Stato di ossidazione
- -1,2,3,4
- Elettrone
- 2,8,10,2
Il titanio è un elemento chimico metallico con simbolo Ti e numero atomico 22. Appartiene alla famiglia dei metalli di transizione ed è classificato tra i metalli più forti, leggeri e resistenti alla corrosione.
Il suo colore è grigio argento e il suo stato di ossidazione è +4. È abbastanza duro e ha una grande resistenza agli agenti chimici. Il titanio è anche un ottimo conduttore di calore ed elettricità.
Viene utilizzato per realizzare leghe metalliche e compositi utilizzati nei settori aeronautico e spaziale. Il titanio è anche molto presente in campo medico e viene utilizzato per la produzione di materiali per la sostituzione delle articolazioni e materiali medici.
Il titanio viene utilizzato per realizzare rivestimenti e rivestimenti protettivi contro la corrosione nell'industria chimica e petrolchimica, negli impianti di riscaldamento e nei serbatoi di carburante. Infine trova largo impiego nel campo dell'architettura e del paesaggio per la realizzazione di elementi decorativi e funzionali.
Minerali contenenti titanio
| nome | Durezza | Densità | Formula chimica |
|---|---|---|---|
| Achalaite | — | 0.00 | (Fe2+,Mn)(Ti,Fe3+,Ta)(Nb,Ta)2O8 |
| Actinolite | — | 2.98 | Ca2(Mg4.5-2.5Fe2+0.5-2.5)S=5Si8O22(OH)2 |
| Aenigmatite | — | 3.74 | Na4(Fe2+10Ti2)O4[Si12O36] |
| 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 |
| Aeschynite-(Y) | — | 4.85 | (Y,Ca,Th)(Ti,Nb)2(O,OH)6 |
| Akaogiite | — | 0.00 | TiO2 |
| Alcaparrosaite | — | 2.81 | K3Ti4+Fe3+(SO4)4O·2H2O |
| Allanite-(La) | — | 3.93 | CaLaAl2Fe2+(Si2O7)(SiO4)O(OH) |
| Allendeite | — | 4.84 | Sc4Zr3O12 |
| Alluaivite | — | 2.76 | Na19(Ca,Mn2+)6(Ti,Nb)3Si26O74Cl·2H2O |
| Almeidaite | — | 0.00 | PbZn2(Mn,Y)(Ti,Fe3+)18O36(OH,O)2 |
| Alsakharovite-Zn | — | 2.90 | NaSrKZn(Ti,Nb)4(Si4O12)2(O,OH)4·7H2O |
| Altisite | — | 2.64 | Na3K6Ti2Al2Si8O26Cl3 |
| Alumino-magnesiotaramite | — | 0.00 | Na2CaMg3Al2(Si6Al2)O22(OH)2 |
| Aluminomagnesiohulsite | — | 3.84 | Mg2AlO2(BO3) |
| Anatase | — | 3.90 | TiO2 |
| Andreyivanovite | — | 0.00 | FeCrP |
| Ankangite | — | 4.44 | Ba(Ti,V3+,Cr)8O16 |
| Anzaite-(Ce) | — | 5.05 | Ce4Fe2+Ti6O18(OH)2 |
| Ardennite-(V) | — | 3.55 | Mn2+4Al4(AlMg)(VO4)(SiO4)2(Si3O10)(OH)6 |
| Armalcolite | — | 4.00 | (Mg,Fe2+)Ti2O5 |
| Armbrusterite | — | 2.78 | Na6K5Mn3+Mn2+14[Si9O22]4(OH)10·4H2O |
| Arrojadite-(KNa) | — | 0.00 | KNa3(CaNa2)Fe2+13Al(PO4)11(PO3OH)(OH)2 |
| Asbecasite | — | 3.70 | Ca3TiAs6Be2Si2O20 |
| Aspidolite | — | 2.89 | NaMg3(Si3Al)O10(OH)2 |
| Astrophyllite | — | 3.30 | K2NaFe2+7Ti2(Si4O12)2O2(OH)4F |
| Augite | — | 3.20 | (Ca,Mg,Fe)2Si2O6 |
| Azoproite | — | 3.63 | Mg2[(Ti,Mg),Fe3+]O2BO3 |
| Bafertisite | — | 3.96 | Ba2Fe2+4Ti2(Si2O7)2O2(OH)2F2 |
| Baghdadite | — | 3.48 | Ca3Zr(Si2O7)O2 |
| Baotite | — | 4.42 | Ba4(Ti,Nb,W)8O16(SiO3)4Cl |
| Baratovite | — | 2.92 | KLi3Ca7Ti2(SiO3)12F2 |
| Bario-orthojoaquinite | — | 3.96 | Ba4Fe2+2Ti2O2(SiO3)8·H2O |
| Barioperovskite | — | 0.00 | BaTiO3 |
| Bariopyrochlore | — | 4.00 | Ba2Nb2O7 |
| Barytolamprophyllite | — | 3.62 | Na3(BaK)Ti3(Si2O7)2O2(OH)2 |
| Batievaite-(Y) | — | 3.45 | Y2Ca2Ti(Si2O7)2(OH)2·4H2O |
| Batiferrite | — | 0.00 | BaTi2Fe3+8Fe2+2O19 |
| Batisite | — | 3.43 | Na2BaTi2(Si4O12)O2 |
| Batisivite | — | 4.62 | BaTi6(V,Cr)8Si2O29 |
| Belkovite | — | 4.16 | Ba3Nb6(Si2O7)2O12 |
| Belyankinite | — | 2.32 | Ca1-2(Ti,Zr,Nb)5O12·9H2O |
| Benitoite | — | 3.60 | BaTiSi3O9 |
| Benyacarite | — | 2.40 | KTiMn2+2Fe3+2(PO4)4OF·15H2O |
| Berdesinskiite | — | 0.00 | V3+2TiO5 |
| Berezanskite | — | 2.66 | KTi2(Li3Si12)O30 |
| Betalomonosovite | — | 0.00 | Na64Ti4(Si2O7)2[PO3(OH)][PO2(OH)2]O2(OF) |
| Biraite-(Ce) | — | 4.76 | Ce2Fe2+Si2O7(CO3) |
| Bobshannonite | — | 3.79 | Na2KBa(Mn,Na)8(Nb,Ti)4(Si2O7)4O4(OH)4(O,F)2 |
| Bornemanite | — | 3.47 | Na6BaTi2Nb(Si2O7)2(PO4)O2(OH)F |
| Braithwaiteite | — | 3.75 | NaCu2+5(Ti4+Sb5+)O2(AsO4)4[AsO3(OH)]2·8H2O |
| Brannerite | — | 4.50 | UTi2O6 |
| Brookite | — | 4.10 | TiO2 |
| Bulgakite | — | 0.00 | Li2(Ca,Na)Fe2+7Ti2(Si4O12)2O2(OH)4(F,O)(H2O)2 |
| Burovaite-Ca | — | 2.73 | (Na,K)4Ca2(Ti,Nb)8[Si4O12]4(OH,O)8·12H2O |
| Bussenite | — | 3.63 | Na2Ba2Fe2+TiSi2O7(CO3)O(OH)F·H2O |
| Byelorussite-(Ce) | — | 3.92 | NaBa2Ce2Mn2+Ti2Si8O26(F,OH)·H2O |
| Bykovaite | — | 2.98 | (Ba,Na,K)2(Na,Ti,Mn)4(Ti,Nb)2O2Si4O14(H2O,F,OH)2·3.5H2O |
| Byrudite | — | 4.35 | (Be)(V3+,Ti4+)3O6 |
| Byzantievite | — | 4.25 | Ba5(Ca,REE,Y)22(Ti,Nb)18(SiO4)4(PO4,SiO4)4(BO3)9O22[(OH),F]43·1.5H2O |
| Cafarsite | — | 3.90 | Ca5.9Mn1.7Fe3Ti3(AsO3)12·4-5H2O |
| Cafetite | — | 3.28 | CaTi2O5·H2O |
| Calciobetafite | — | 4.20 | (Ca,Na)2(Nb,Ti)2(O,OH)7 |
| Calciomurmanite | — | 2.85 | (Na)2Ca(Ti,Mg,Nb)4[Si2O7]2O2(OH,O)2(H2O)4 |
| Calciosamarskite | — | 4.48 | (Ca,Fe,Y)(Nb,Ta,Ti)O4 |
| Calzirtite | — | 5.01 | Ca2Zr5Ti2O16 |
| Cámaraite | — | 0.00 | Ba3Na(Fe2+,Mn)8Ti4(Si2O7)4O4(OH,F)7 |
| Carbokentbrooksite | — | 3.14 | (Na)12(Na,Ce)3Ca6Mn3Zr3NbSi25O73(OH)3(CO3)·H2O |
| Carlosturanite | — | 2.63 | (Mg,Fe2+,Ti)21(Si,Al)12O28(OH)34·H2O |
| Carmichaelite | — | 4.13 | (Ti,Cr,Fe)(O,OH)2 |
| Caryochroite | — | 2.99 | (Na,Sr)3(Fe3+,Mg)10Ti2Si12O37(H2O,O,OH)17 |
| 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 |
| Chivruaiite | — | 2.40 | Ca4(Ti,Nb)5(Si6O17)2(OH,O)5·13-14H2O |
| Christofschäferite-(Ce) | — | 4.00 | (Ce,La,Ca)4Mn(Ti,Fe)3(Fe,Ti)(Si2O7)2O8 |
| Ciprianiite | — | 0.00 | Ca4(Th,REE)2Al(B4Si4O22)(OH)2 |
| Cleusonite | — | 4.74 | Pb(U4+,U6+)Fe2+2(Ti,Fe2+,Fe3+)18(O,OH)38 |
| Columbite-(Mg) | — | 5.04 | MgNb2O6 |
| Columbite-(Mn) | — | 5.28 | Mn2+Nb2O6 |
| Crichtonite | — | 4.46 | Sr(Mn,Y,U)Fe2(Ti,Fe,Cr,V)18(O,OH)38 |
| Curetonite | — | 4.31 | Ba(Al,Ti)(PO4)(OH,O)F |
| Dalyite | — | 2.84 | K2ZrSi6O15 |
| Davanite | — | 2.76 | K2TiSi6O15 |
| 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 |
| Davidite-(Y) | — | 0.00 | (Y,U)(Ti,Fe3+)21O38 |
| Davisite | — | 0.00 | CaScAlSiO6 |
| Delindeite | — | 3.30 | Na2Ba2Ti3(Si2O7)2O2(OH)2·2H2O |
| Derbylite | — | 4.50 | Fe3+4Ti4+3Sb3+O13(OH) |
| Dessauite-(Y) | — | 4.68 | Sr(Y,U,Mn)Fe2(Ti,Fe,Cr,V)18(O,OH)38 |
| Dickinsonite-(KMnNa) | — | 3.42 | K(NaMn)CaNa3AlMn13(PO4)12(OH)2 |
| Dingdaohengite-(Ce) | — | 4.83 | (Ce3+,La)4Fe2+(Ti,Fe2+,Mg,Fe3+)2Ti2Si4O22 |
| Dissakisite-(La) | — | 3.79 | CaLaMgAl2(Si2O7)(SiO4)O(OH) |
| Diversilite-(Ce) | — | 3.68 | Na2Ba6Ce2Fe2+Ti3Si12O36(OH)10·nH2O |
| Dmitryivanovite | — | 0.00 | CaAl2O4 |
| Dovyrenite | — | 3.03 | Ca6Zr(Si2O7)2(OH)4 |
| Dualite | — | 2.84 | Na30(Ca,Na,Ce,Sr)12(Na,Mn,Fe,Ti)6Zr3Ti3MnSi51O144(OH,H2O,Cl)9 |
| Ecandrewsite | — | 4.00 | ZnTiO3 |
| Eliseevite | — | 2.71 | Na1.5Li[Ti2O2(Si4O10.5(OH)1.5)]·2H2O |
| Ellenbergerite | — | 3.15 | Mg6(Mg,Ti,Zr)2(Al,Mg)6Si8O28(OH)10 |
| Emmerichite | — | 3.86 | Ba2Na(Na,Fe2+)2(Fe3+,Mg)Ti2(Si2O7)2O2F2 |
| Epistolite | — | 2.65 | Na4TiNb2(Si2O7)2O2(OH)2·4H2O |
| Ershovite | — | 2.75 | K3Na4(Fe,Mn,Ti)2Si8O20(OH,O)4·4H2O |
| Euxenite-(Y) | — | 4.70 | (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6 |
| Eveslogite | — | 2.85 | (Ca,K,Na,Sr,Ba)48(Ti,Nb,Fe,Mn)12(OH)12Si48O144(OH,F,Cl)14 |
| Faizievite | — | 2.82 | Li6K2Na(Ca6Na)Ti4(Si6O18)2(Si12O30)F2 |
| Feklichevite | — | 2.87 | Na11Ca9(Fe3+,Fe2+)2Zr3Nb(Si25O73)(OH,H2O,Cl,O)5 |
| Fergusonite-(Nd) | — | 4.50 | NdNbO4 |
| Fernandinite | — | 2.78 | (Ca,Na,K)0.9(V5+,V4+,Fe2+,Ti)8O20·4H2O |
| Ferri-kaersutite | — | 0.00 | NaCa2(Mg3Fe3+Ti)(Si6Al2)O22O2 |
| Ferri-obertiite | — | 0.00 | NaNa2(Mg3Fe3+Ti)Si8O22O2 |
| Ferri-ottoliniite | — | 0.00 | NaLi(Fe3+2Mg3)Si8O22(OH)2 |
| Ferriallanite-(Ce) | — | 4.22 | CaCeFe2+Fe3+Al(SiO4)(Si2O7)O(OH) |
| Ferriwhittakerite | — | 0.00 | Na(NaLi)(Mg2Fe3+2Li)Si8O22(OH)2 |
| Ferro-ferri-obertiite | — | 3.33 | NaNa2(Fe2+3Fe3+Ti)Si8O22O2 |
| Ferrocarpholite | — | 3.04 | Fe2+Al2Si2O6(OH)4 |
| Ferrohögbomite-2N2S | — | 0.00 | (Fe,Mg,Zn,Al)3(Al,Ti,Fe)8O15(OH) |
| Ferrokaersutite | — | 3.20 | NaCa2(Fe2+4Ti2+)(Si6Al2)O22O(OH) |
| Ferrokentbrooksite | — | 3.06 | Na15Ca6Fe2+3Zr3Nb(Si25O73)(O,OH,H2O)3(F,Cl)2 |
| Ferrotitanowodginite | — | 0.00 | Fe2+TiTa2O8 |
| Fersmanite | — | 3.44 | Ca4(Na,Ca)4(Ti,Nb)4(Si2O7)2O8F3 |
| Fersmite | — | 4.69 | (Ca,Ce,Na)(Nb,Ta,Ti)2(O,OH,F)6 |
| Feruvite | — | 3.21 | CaFe2+3(Al5Mg)(Si6O18)(BO3)3(OH)3OH |
| Fetiasite | — | 4.60 | (Fe2+,Fe3+,Ti4+)3O2As3+2O5 |
| Florenskyite | — | 0.00 | FeTiP |
| Fluorcalciopyrochlore | — | 0.00 | (Ca,Na)2(Nb,Ti)2O6F |
| Fluorlamprophyllite | — | 0.00 | Na3(SrNa)Ti3(Si2O7)2O2F2 |
| Fluorophlogopite | — | 2.83 | KMg3(Si3Al)O10F2 |
| Fogoite-(Y) | — | 3.52 | Na3Ca2Y2Ti(Si2O7)2OF3 |
| Fresnoite | — | 4.43 | Ba2TiO(Si2O7) |
| Freudenbergite | — | 4.30 | Na(Ti4+3Fe3+)O8 |
| Gadolinite-(Ce) | — | 4.20 | Fe2+Be2Ce2(SiO4)2O2 |
| Ganterite | — | 3.11 | Ba0.5(Na,K)0.5Al2(Si2.5Al1.5)O10(OH)2 |
| Geikielite | — | 4.00 | MgTiO3 |
| Georgbarsanovite | — | 3.05 | Na12(Mn,Sr,REE)3Ca6Fe2+3Zr3NbSi25O76Cl2·H2O |
| Gerasimovskite | — | 2.52 | Mn2+(Ti,Nb)5O12·9H2O |
| Gjerdingenite-Ca | — | 2.79 | K2Ca(Nb,Ti)4(Si4O12)2(O,OH)4·6H2O |
| Gjerdingenite-Fe | — | 2.82 | K2Fe(Nb,Ti)4(Si4O12)2(O,OH)4·6H2O |
| Gjerdingenite-Mn | — | 2.93 | K2Mn(Nb,Ti)4(Si4O12)2(O,OH)4·6H2O |
| Gjerdingenite-Na | — | 2.71 | (K,Na)2Na(Nb,Ti)4(Si4O12)2(OH,O)4·5H2O |
| Götzenite | — | 3.14 | NaCa6Ti(Si2O7)2OF3 |
| Graeserite | — | 4.62 | Fe3+4Ti3As3+O13(OH) |
| Gramaccioliite-(Y) | — | 4.66 | (Pb,Sr)(Y,Mn)Fe3+2(Ti,Fe3+)18O38 |
| Grenmarite | — | 3.49 | Na4MnZr3(Si2O7)2O2F2 |
| Grossmanite | — | 3.41 | CaTi3+AlSiO6 |
| Gutkovaite-Mn | — | 2.83 | CaK2Mn(Ti,Nb)4(Si4O12)2(O,OH)4·5H2O |
| Haggertyite | — | 0.00 | BaFe2+4Fe3+2Ti5MgO19 |
| Haineaultite | — | 2.28 | (Na,Ca)5Ca(Ti,Nb)5Si12O34(OH,F)8·5H2O |
| Hainite | — | 3.15 | Na2Ca4(Y,REE)Ti(Si2O7)2OF3 |
| Hawthorneite | — | 5.00 | BaMgTi3Cr4Fe2+2Fe3+2O19 |
| Heideite | — | 4.10 | (Fe,Cr)1.15(Ti,Fe)2S4 |
| Hejtmanite | — | 4.02 | BaMn2+2Ti(Si2O7)O(OH)2 |
| Hemloite | — | 4.00 | (Ti,V3+,Fe3+,Al)12As3+2O23(OH) |
| Henrymeyerite | — | 4.00 | Ba(Ti4+7Fe2+)O16 |
| Hezuolinite | — | 4.30 | (Sr,REE)4Zr(Ti,Fe3+,Fe2+)2Ti2O8(Si2O7)2 |
| Hiärneite | — | 5.44 | (Ca,Mn2+,Na)2(Zr,Mn3+)5(Sb,Ti,Fe)2O16 |
| Hibonite | — | 3.84 | (Ca,Ce)(Al,Ti,Mg)12O19 |
| Hiortdahlite | — | 3.27 | (Na,Ca)2Ca4Zr(Mn,Ti,Fe)(Si2O7)2(F,O)4 |
| Hogarthite | — | 2.40 | (Na,K)2CaTi2Si10O26·8H2O |
| Høgtuvaite | — | 3.85 | Ca4(Fe2+6Fe3+6)O4[Si8Be2Al2O36] |
| Holfertite | — | 4.26 | (UO2)1.75Ca0.25TiO4·3H2O |
| Hutcheonite | — | 3.86 | Ca3Ti2(Al2Si)O12 |
| Hydroastrophyllite | — | 3.15 | (H3O,K)2CaFe2+5-6Ti2Si8O26(OH)4F |
| Hydroxycalciopyrochlore | — | 5.15 | (Ca,Na,U)2(Nb,Ti)2O6(OH) |
| Hydroxycalcioroméite | — | 0.00 | (Ca,Sb3+)2(Sb5+,Ti)2O6(OH) |
| Hydroxymanganopyrochlore | — | 5.40 | (Mn,Th,Na,Ca,REE)2(Nb,Ti)2O6(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 |
| Ilmenite | — | 4.72 | Fe2+Ti4+O3 |
| Innelite | — | 3.96 | Na2CaBa4Ti3(Si2O7)2(SO4)2O4 |
| Intersilite | — | 2.42 | Na6Mn(Ti,Nb)Si10(O,OH)28·4H2O |
| Isolueshite | — | 4.72 | NaNbO3 |
| Ivanyukite-Cu | — | 2.46 | CuTi4(SiO4)3O2(OH)2·7H2O |
| Ivanyukite-K | — | 2.69 | K2Ti4(SiO4)3O2(OH)2·9H2O |
| Ivanyukite-Na | — | 0.00 | Na2Ti4(SiO4)3O2(OH)2·6H2O |
| Ivanyukite-Na-T | — | 2.58 | Na3Ti4(SiO4)3O3(OH)·7H2O |
| Iwashiroite-(Y) | — | 7.10 | YTaO4 |
| Janhaugite | — | 3.60 | (Na,Ca)3(Mn2+,Fe2+)3(Ti,Zr,Nb)2(Si2O7)2O2(OH,F)2 |
| Jeppeite | — | 3.94 | (K,Ba)2(Ti,Fe3+)6O13 |
| Jinshajiangite | — | 3.61 | NaBaFe2+4Ti2(Si2O7)2O2(OH)2F |
| Joaquinite-(Ce) | — | 3.62 | NaBa2Fe2+Ti2Ce2(SiO3)8O2(OH)·H2O |
| Johnsenite-(Ce) | — | 3.20 | Na12Ce3Ca6Mn3Zr3WSi25O73(CO3)(OH)2 |
| Jonesite | — | 3.25 | KBa2Ti2(Si5Al)O18·nH2O |
| Kaersutite | — | 3.20 | NaCa2(Mg3Ti4+Al)(Si6Al2)O22O2 |
| Kampfite | — | 3.45 | Ba12(Si11Al5)O31(CO3)8Cl5 |
| Kapustinite | — | 2.78 | Na6ZrSi6O16(OH)2 |
| Karnasurtite-(Ce) | — | 2.89 | CeTiAlSi2O7(OH)4·3H2O |
| Karupmøllerite-Ca | — | 2.71 | (Na,Ca,K)2Ca(Nb,Ti)4(Si4O12)2(O,OH)4·7H2O |
| Kassite | — | 3.42 | CaTi2O4(OH)2 |
| Katayamalite | — | 2.91 | KLi3Ca7Ti2(SiO3)12(OH)2 |
| Katiarsite | — | 3.49 | KTiO(AsO4) |
| Katophorite | — | 3.20 | NaNaCa(Mg4Al)(Si7Al)O22(OH)2 |
| Kazakovite | — | 2.84 | Na6Mn2+TiSi6O18 |
| Kazanskyite | — | 2.93 | BaNa3Ti2Nb(Si2O7)2O2(OH)2·4H2O |
| Kentrolite | — | 6.19 | Pb2Mn3+2O2(Si2O7) |
| Khamrabaevite | — | 10.01 | (Ti,V,Fe)C |
| Khristovite-(Ce) | — | 4.05 | CaCeMgMn2+Al(Si2O7)(SiO4)(OH)F |
| Kihlmanite-(Ce) | — | 3.69 | Ce2TiO2(SiO4)(HCO3)2·H2O |
| Kimzeyite | — | 4.00 | Ca3Zr2(Al2Si)O12 |
| Kleberite | — | 3.27 | FeTi6O11(OH)5 |
| Koashvite | — | 2.98 | Na6CaTiSi6O18 |
| Kobeite-(Y) | — | 4.60 | (Y,U)(Ti,Nb)2(O,OH)6 |
| Kochite | — | 3.32 | Na(Na,Ca)2Ca2(Mn,Ca)ZrTi(Si2O7)2(F,O)4 |
| Kolskyite | — | 2.51 | CaNa2Ti4(Si2O7)2O4·7H2O |
| Komarovite | — | 3.61 | (Ca,Sr,Na)6-x(Nb,Ti)6(Si4O12)(O,OH,F)16·nH2O |
| Koragoite | — | 4.70 | Mn2+2Mn3+Nb2(Nb,Ta)3W2O20 |
| Kornerupine | — | 3.30 | (Mg,Fe2+,Al)10(Si,Al,B)5O21(OH,F) |
| Korobitsynite | — | 0.00 | (Na)8Ti4(Si4O12)2(O,OH)4·8H2O |
| Kudryavtsevaite | — | 3.85 | Na3MgFe3+Ti4O12 |
| Kukisvumite | — | 2.90 | Na6ZnTi4O4(SiO3)8·4H2O |
| Kupletskite | — | 3.20 | K2NaMn2+7Ti2(Si4O12)2O2(OH)4F |
| Kupletskite-(Cs) | — | 3.68 | Cs2NaMn2+7Ti2(Si4O12)2O2(OH)4F |
| Kuratite | — | 0.00 | Ca2(Fe2+5Ti)O2[Si4Al2O18] |
| Kuzmenkoite-Mn | — | 2.67 | K4Mn2Ti8(Si4O12)4(OH,O)8·10-12H2O |
| Kuzmenkoite-Zn | — | 2.78 | K2ZnTi4(Si4O12)2(OH)4·6-8H2O |
| Kyzylkumite | — | 3.75 | Ti2V3+O5(OH) |
| Laachite | — | 5.42 | (Ca,Mn)2Zr2Nb2TiFeO14 |
| Labuntsovite-Fe | — | 2.94 | Na4K4Fe2+2Ti8(Si4O12)4(O,OH)8·10-12H2O |
| Labuntsovite-Mg | — | 2.88 | Na4K4Mg2Ti8O4(Si4O12)4(OH)4·10-12H2O |
| Labuntsovite-Mn | — | 2.89 | Na4K4Mn2+2Ti8O4(Si4O12)4(OH)4·10-12H2O |
| Labyrinthite | — | 2.88 | (Na,K,Sr)35Ca12Fe3Zr6TiSi51O144(O,OH,H2O)9Cl3 |
| Lakargiite | — | 4.59 | CaZrO3 |
| Lamprophyllite | — | 3.44 | Na3(SrNa)Ti3(Si2O7)2O2(OH)2 |
| Landauite | — | 4.42 | (Na,Pb)(Mn2+,Y)(Zn,Fe)2(Ti,Fe3+,Nb)18(O,OH,F)O38 |
| Laplandite-(Ce) | — | 2.83 | Na4CeTiPSi7O22·5H2O |
| Latrappite | — | 4.40 | Ca2NbFe3+O6 |
| Låvenite | — | 3.51 | (Na,Ca)2(Mn2+,Fe2+)(Zr,Ti,Nb)(Si2O7)(O,OH,F)2 |
| Lemmleinite-Ba | — | 3.03 | Na4K4Ba2+xTi8(Si4O12)4(O,OH)8·8H2O |
| Lemmleinite-K | — | 2.80 | Na4K8Ti8(Si4O12)4(O,OH)8·8H2O |
| Lepkhenelmite-Zn | — | 2.96 | Ba2Zn(Ti,Nb)4(Si4O12)2(O,OH)4·7H2O |
| Leucosphenite | — | 3.00 | Na4BaTi2B2Si10O30 |
| Lileyite | — | 3.78 | Ba2(Na,Fe,Ca)3MgTi2(Si2O7)2O2F2 |
| Lindsleyite | — | 4.63 | (Ba,Sr)(Zr,Ca)(Fe,Mg)2(Ti,Cr,Fe)18O38 |
| Lintisite | — | 2.77 | Na3LiTi2O2(SiO3)4·2H2O |
| Lobanovite | — | 3.16 | K2Na(Fe2+4Mg2Na)Ti2(Si4O12)2O2(OH)4 |
| Lomonosovite | — | 3.12 | Na5Ti2(Si2O7)(PO4)O2 |
| Loparite-(Ce) | — | 4.77 | (Na,Ce,Sr)(Ce,Th)(Ti,Nb)2O6 |
| Lorenzenite | — | 3.40 | Na2Ti2O3(Si2O6) |
| Lourenswalsite | — | 3.17 | (K,Ba)2Ti4(Si,Al)6O14(OH)12 |
| Lovdarite | — | 2.33 | K2Na6Be4Si14O36·9H2O |
| Loveringite | — | 4.41 | (Ca,Ce,La)(Zr,Fe)(Mg,Fe)2(Ti,Fe,Cr,Al)18O38 |
| Lovozerite | — | 2.30 | Na3CaZrSi6O15(OH)3 |
| Lucasite-(Ce) | — | 0.00 | CeTi2O5(OH) |
| Macedonite | — | 7.82 | PbTiO3 |
| Magnesiodumortierite | — | 3.22 | MgAl6BSi3O17(OH) |
| Magnesiohögbomite-2N2S | — | 3.81 | (Al,Mg,Fe,Ti)22(O,OH)32 |
| Magnesiohögbomite-2N3S | — | 3.81 | (Mg,Fe,Zn,Ti)4(Al,Fe)10O19(OH) |
| Magnesiohögbomite-2N4S | — | 3.70 | Mg10Al22Ti2O46(OH)2 |
| Magnesiohögbomite-6N6S | — | 3.81 | (Mg,Al,Fe)3(Al,Ti)8O15(OH) |
| Magnesioneptunite | — | 3.15 | KNa2LiMg2Ti2Si8O24 |
| Magnesiosadanagaite | — | 3.00 | NaCa2[Mg3(Fe3+,Al)2](Si5Al3)O22(OH)2 |
| Magnesiostaurolite | — | 3.54 | Mg(Mg,Li)3(Al,Mg)18Si8O44(OH)4 |
| Magnetoplumbite | — | 5.52 | PbFe3+12O19 |
| Makarochkinite | — | 3.93 | Ca2Fe2+4Fe3+TiSi4BeAlO20 |
| Manganbelyankinite | — | 2.40 | Mn2+(Ti,Nb)5O12·9H2O |
| Mangani-dellaventuraite | — | 3.18 | NaNa2(MgMn3+2LiTi4+)Si8O22O2 |
| Mangani-obertiite | — | 3.16 | NaNa2(Mg3Mn3+Ti4+)Si8O22O2 |
| Manganiandrosite-(Ce) | — | 0.00 | Mn2+Ce3+AlMn3+Mn2+(Si2O7)(SiO4)O(OH) |
| Manganokukisvumite | — | 2.86 | Na6MnTi4Si8O28·4H2O |
| Manganoneptunite | — | 3.23 | KNa2LiMn2+2Ti2Si8O24 |
| Mannardite | — | 4.12 | Ba(Ti4+6V3+2)O16 |
| Mantienneite | — | 2.31 | KMg2Al2Ti(PO4)4(OH)3·15H2O |
| Maoniupingite-(Ce) | — | 0.00 | (Ce,Ca)4(Fe3+,Ti,Fe2+)(Ti,Fe3+,Fe2+,Nb)4Si4O22 |
| Mapiquiroite | — | 0.00 | (Sr,Pb)(U,Y)Fe2(Ti,Fe3+,Cr3+)18O38 |
| Marianoite | — | 3.32 | Na2Ca4(Nb,Zr)2(Si2O7)2(O,F)4 |
| Martinite | — | 0.00 | (Na,Ca)12Ca4(Si,S,B)14B2O38(OH,Cl)2F2·4H2O |
| Mathiasite | — | 4.60 | (K,Ba,Sr)(Zr,Fe)(Mg,Fe)2(Ti,Cr,Fe)18O38 |
| Matsubaraite | — | 4.13 | Sr4Ti5O8(Si2O7)2 |
| Menezesite | — | 4.18 | Ba3MgZr4Nb12O42·12H2O |
| Mianningite | — | 0.00 | (Pb,Ce,Na)(U4+,Mn,U6+)Fe3+2(Ti,Fe3+)18O38 |
| Middendorfite | — | 2.60 | K3Na2Mn5Si12(O,OH)36·2H2O |
| Mieite-(Y) | — | 4.61 | Y4Ti(SiO4)2O[F,(OH)]6 |
| Miserite | — | 2.84 | KCa6Si8O22(OH) |
| Mogovidite | — | 2.90 | Na9(Ca,Na)12Fe2Zr3Si25O72(CO3)(OH)4 |
| Mongshanite | — | 0.00 | (Mg,Cr,Fe,Ca,K)2(Ti,Zr,Cr,Fe)5O12 |
| Morimotoite | — | 3.75 | Ca3TiFe2+Si3O12 |
| 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 |
| Muirite | — | 3.86 | Ba10Ca2Mn2+TiSi10O30(OH,Cl,F)10 |
| Murataite-(Y) | — | 4.00 | (Y,Na)6Zn(Zn,Fe3+)4(Ti,Nb,Na)12O29(O,F,OH)10F4 |
| Murmanite | — | 2.64 | Na2Ti2(Si2O7)O2·2H2O |
| Nabalamprophyllite | — | 3.58 | Na3(BaNa)Ti3(Si2O7)2O2(OH)2 |
| Nacareniobsite-(Ce) | — | 3.45 | Na3Ca3CeNb(Si2O7)2OF3 |
| Nafertisite | — | 2.70 | Na3Fe2+10Ti4+2(Si6O17)2O2(OH)6F·2H2O |
| Nagashimalite | — | 4.08 | Ba4(V3+,Ti)4(O,OH)2[B2Si8O27]Cl |
| Nalivkinite | — | 3.29 | Li2NaFe2+7Ti2(Si4O12)2O2(OH)4F |
| Narsarsukite | — | 2.70 | Na2(Ti,Fe3+)Si4(O,F)11 |
| Natisite | — | 3.15 | Na2TiO(SiO4) |
| Natrokomarovite | — | 3.30 | (Na,Ca)6-xCa(Nb,Ti)6Si4O12(O,OH,F)16·nH2O |
| Natrotitanite | — | 3.83 | (Na0.5Y0.5)Ti(SiO4)O |
| Nechelyustovite | — | 3.32 | (Ba,Na)2(Na,Ti,Mn)4(Ti,Nb)2Si4O14(OH,O,F)5·3H2O |
| Nenadkevichite | — | 2.84 | (Na)8Nb4(Si4O12)2(O,OH)4·8H2O |
| Neptunite | — | 3.23 | KNa2LiFe2+2Ti2Si8O24 |
| Neskevaaraite-Fe | — | 2.88 | NaK3Fe(Ti,Nb)4(Si4O12)2(O,OH)4·6H2O |
| Nežilovite | — | 5.69 | PbZn2Mn4+2Fe3+8O19 |
| Nioboaeschynite-(Ce) | — | 5.04 | (Ce,Ca)(Nb,Ti)2(O,OH)6 |
| Nioboaeschynite-(Nd) | — | 0.00 | Nd(Nb,Ti)2(O,OH)6 |
| Nioboaeschynite-(Y) | — | 5.34 | (Y,REE,Ca,Th,Fe)(Nb,Ti,Ta)2(O,OH)6 |
| Niobokupletskite | — | 3.33 | K2NaMn2+7(Nb,Zr,Ti)(Si4O12)2O2(OH)4(O,F) |
| Niobophyllite | — | 3.42 | K2NaFe2+7(Nb,Ti)(Si4O12)2O2(OH)4(O,F) |
| Nolanite | — | 4.69 | (V3+,Fe3+,Fe2+,Ti)10O14(OH)2 |
| Noonkanbahite | — | 0.00 | KNaBaTi2(Si4O12)O2 |
| Normandite | — | 3.48 | NaCa(Mn,Fe)(Ti,Nb,Zr)(Si2O7)OF |
| Nybøite | — | 3.12 | NaNa2(Mg3Al2)(Si7Al)O22(OH)2 |
| Odinite | — | 2.60 | (Fe3+,Mg,Al,Fe2+)2.5(Si,Al)2O5(OH)4 |
| Odintsovite | — | 2.94 | K2Na4Ca3Ti2Be4Si12O38 |
| Ohmilite | — | 3.38 | Sr3(Ti,Fe3+)(Si2O6)2(O,OH)·2H2O |
| Okanoganite-(Y) | — | 4.35 | (Y,REE,Ca,Na,Th)16(Fe3+,Ti)(Si,B,P)10(O,OH)38F10 |
| Olkhonskite | — | 4.48 | Cr2Ti3O9 |
| Organovaite-Mn | — | 2.88 | K2MnNb4(Si4O12)2O4·5-7H2O |
| Organovaite-Zn | — | 2.88 | K2Zn(Nb,Ti)4(Si4O12)2(O,OH)4·6H2O |
| Orlovite | — | 2.01 | KLi2TiSi4O10(OF) |
| Orthobrannerite | — | 5.46 | U4+U6+Ti4O12(OH)2 |
| Orthoericssonite | — | 4.21 | BaMn2+2(Fe3+,Ti)Si2O7(O,OH)2 |
| Orthojoaquinite-(Ce) | — | 3.68 | NaBa2Fe2+Ce2Ti2(SiO3)8O2(O,OH)·H2O |
| Orthojoaquinite-(La) | — | 4.10 | NaBa2La2Fe2+Ti2Si8O26(OH,O,F)·H2O |
| Osbornite | — | 5.00 | TiN |
| Oxycalciobetafite | — | 0.00 | Ca2(Ti,Nb)2O6O |
| Oxykinoshitalite | — | 3.30 | BaMg2Ti4+O2(Si2Al2)O10 |
| Oxyphlogopite | — | 3.09 | K(Mg,Ti,Fe)3[(Si,Al)4O10](O,F)2 |
| Oxyuranobetafite | — | 0.00 | (U,Ca)2(Ti,Nb)2O6O |
| Pabstite | — | 4.03 | BaSnSi3O9 |
| Painite | — | 4.00 | CaZrAl9O15(BO3) |
| Panguite | — | 3.75 | (Ti,Al,Sc,Mg,Zr,Ca)1.8O3 |
| Paqueite | — | 0.00 | Ca3TiSi2(Al,Ti,Si)3O14 |
| Parakuzmenkoite-Fe | — | 3.00 | (K,Ba)8Fe4Ti16(Si4O12)8(OH,O)16·20-28H2O |
| Paralabuntsovite-Mg | — | 4.81 | Na8K8Mg4Ti16(Si4O12)8(O,OH)16·20-24H2O |
| Paranatisite | — | 3.12 | Na2TiO(SiO4) |
| Paratsepinite-Ba | — | 2.88 | (Ba,Na,K)2-x(Ti,Nb)2Si4O12(OH,O)2·4H2O |
| Paratsepinite-Na | — | 0.00 | (Na,Sr,K,Ca)2(Ti,Nb)2(Si4O12)(O,OH)2·4H2O |
| Paravinogradovite | — | 2.77 | (Na)2(Ti4+,Fe3+)4(Si2O6)2(Si3AlO10)(OH)4·H2O |
| Parvo-mangano-edenite | — | 3.11 | Na(CaMn)Mg5(Si7Al)O22(OH)2 |
| Paseroite | — | 4.32 | PbMn2+(Fe3+)2(V5+,Ti)18O38 |
| Paulkerrite | — | 2.36 | KMg2TiFe3+2(PO4)4(OH)3·15H2O |
| Penkvilksite | — | 2.63 | Na4Ti2Si8O22·4H2O |
| Perovskite | — | 4.00 | CaTiO3 |
| Perraultite | — | 3.71 | (Na,Ca)2(Ba,K)2(Mn,Fe)8(Ti,Nb)4O4(OH)2(Si2O7)4(OH,F)4 |
| 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 |
| Phosphoinnelite | — | 3.82 | Na3Ba4Ti3Si4O14(PO4)2O2F |
| Piergorite-(Ce) | — | 0.00 | Ca8Ce2AlLiSi6B8O36(OH)2 |
| Písekite-(Y) | — | 4.03 | (Y,As,Ca,Fe,U)(Nb,Ti,Ta)O4 |
| Plumbobetafite | — | 4.64 | (Pb,U,Ca)2(Ti,Nb)2(O,OH,F)7 |
| Polyakovite-(Ce) | — | 4.75 | (Ce,Ca)4MgCr2(Ti,Nb)2Si4O22 |
| Polycrase-(Y) | — | 4.97 | Y(Ti,Nb)2(O,OH)6 |
| Polyphite | — | 3.00 | Na9Ca2Ti2(Si2O7)(PO4)3O2F2 |
| Poppiite | — | 3.36 | Ca2(V3+,Fe3+,Mg)V3+2(Si,Al)3(O,OH)14 |
| Priderite | — | 3.86 | K(Ti4+7Fe3+)O16 |
| Proshchenkoite-(Y) | — | 4.72 | (Y,REE,Ca,Na,Mn)15CaFe2+(P,Si)Si6B3O34F14 |
| Pseudobrookite | — | 4.40 | Fe3+2TiO5 |
| Pseudorutile | — | 3.80 | Fe3+2Ti4+3O9 |
| Punkaruaivite | — | 2.55 | LiTi2Si4O11(OH)3·H2O |
| Pyatenkoite-(Y) | — | 2.68 | Na5YTiSi6O18·6H2O |
| Pyrophanite | — | 4.50 | Mn2+TiO3 |
| Qandilite | — | 4.03 | Mg2(Ti,Fe3+,Al)O4 |
| Qaqarssukite-(Ce) | — | 0.00 | BaCe(CO3)2F |
| Quadruphite | — | 3.00 | Na14Ca2Ti4(Si2O7)2(PO4)4O4F2 |
| Raite | — | 2.32 | Na3Mn2+3Ti0.25Si8O20(OH)2·10H2O |
| Redledgeite | — | 3.72 | Ba(Ti4+6Cr3+2)O16 |
| Rengeite | — | 4.12 | Sr4Ti4ZrO8(Si2O7)2 |
| Rhönite | — | 3.40 | Ca4(Mg8Fe3+2Ti2)O4[Si6Al6O36] |
| Rinkite | — | 3.50 | Na2Ca4CeTi(Si2O7)2OF3 |
| Rippite | — | 0.00 | K2(Nb,Ti)2(Si4O12)O(O,F) |
| Romanite | — | 4.07 | (Fe2+,U,Pb)2(Ti,Fe3+)O12(?) |
| Roméite | — | 4.70 | (Ca,Fe2+,Mn2+,Na)2(Sb5+,Ti4+)2O6(O,OH,F) |
| Rondorfite | — | 3.03 | Ca8Mg(SiO4)4Cl2 |
| Rosenbuschite | — | 3.30 | Na2(Na,Ca)4Ca6Zr3Ti(Si2O7)4O4F4 |
| Rossovskyite | — | 6.30 | (Fe3+,Ta)(Nb,Ti)O4 |
| Roumaite | — | 3.33 | (Ca,Na,Ce)7(Nb,Ti)(Si2O7)2(OH)F3 |
| Rutile | — | 4.25 | TiO2 |
| Saamite | — | 3.24 | BaNa3Ti2Nb(Si2O7)2O2(OH)2·2H2O |
| Sabinaite | — | 3.36 | Na4TiZr2O4(CO3)4 |
| Sadanagaite | — | 3.30 | NaCa2(Mg3Al2)(Si5Al3)O22(OH)2 |
| Samarskite-(Y) | — | 5.60 | (Y,Ce,U,Fe,Nb)(Nb,Ta,Ti)O4 |
| Samarskite-(Yb) | — | 7.03 | YbNbO4 |
| Schorlomite | — | 3.81 | Ca3Ti2(Fe3+2Si)O12 |
| Schreyerite | — | 4.00 | V3+2Ti4+3O9 |
| Schüllerite | — | 3.97 | Na2Ba2Mg2Ti2(Si2O7)2O2F2 |
| Seidite-(Ce) | — | 2.76 | Na4(Ce,Sr)2TiSi8O18(O,OH,F)6·5H2O |
| Seidozerite | — | 3.47 | (Na,Ca)4Mn(Ti,Zr)2(Si2O7)2(O,F,OH)4 |
| Selivanovaite | — | 0.00 | (Na,Ca)3(Ti,Fe)5[Si4O18(OH)3]·7H2O |
| Senaite | — | 5.30 | Pb(Mn,Y,U)(Fe,Zn)2(Ti,Fe,Cr,V)18(O,OH)38 |
| Senkevichite | — | 3.13 | CsKNaCa2TiOSi7O18(OH) |
| Shcherbakovite | — | 3.34 | K2NaTi4+2(Si4O12)O(OH) |
| Shirozulite | — | 3.20 | KMn2+3(Si3Al)O10(OH)2 |
| Shkatulkalite | — | 2.70 | Na10MnTi3Nb3(Si2O7)6(OH)2F·12H2O |
| Shulamitite | — | 3.84 | Ca3TiFe3+AlO8 |
| Sitinakite | — | 2.86 | KNa2Ti4Si2O13(OH)·4H2O |
| Sobolevite | — | 3.03 | Na13Ca2Mn2Ti3(Si2O7)2(PO4)4O3F3 |
| Sodic-ferripedrizite | — | 3.15 | LiNa2(Fe3+2Mg2Li)Si8O22(OH)2 |
| Srilankite | — | 4.77 | Ti2ZrO6 |
| Stavelotite-(La) | — | 4.49 | La3Mn2+3Cu2+(Mn3+,Fe3+,Mn4+)26(Si2O7)6O30 |
| Strontio-orthojoaquinite | — | 3.62 | NaSr4Fe3+Ti2Si8O24(OH)4 |
| Strontiochevkinite | — | 5.44 | (Sr,Ce,La)4Fe2+(Ti,Zr)4O8(Si2O7)2 |
| Strontiojoaquinite | — | 3.68 | (Na,Fe)2Ba2Sr2Ti2(SiO3)8(O,OH)2·H2O |
| Sugilite | — | 2.74 | KNa2Fe3+2(Li3Si12)O30 |
| Suhailite | — | 2.95 | (NH4)Fe2+3(Si3Al)O10(OH)2 |
| Surkhobite | — | 3.84 | NaCaBa2Mn8Ti4O4(Si2O7)4(F5O) |
| Sveinbergeite | — | 3.15 | Ca(Fe2+6Fe3+)Ti2(Si4O12)2O2(OH)5·4H2O |
| Tadzhikite-(Ce) | — | 3.73 | Ca4Ce3+2Ti(B4Si4O22)(OH)2 |
| Tadzhikite-(Y) | — | 3.73 | — |
| Tantalaeschynite-(Y) | — | 5.75 | Y(Ta,Ti,Nb)2O6 |
| Tantalite-(Mg) | — | 6.70 | MgTa2O6 |
| Tanteuxenite-(Y) | — | 5.40 | Y(Ta,Nb,Ti)2(O,OH)6 |
| Taramellite | — | 3.90 | Ba4(Fe3+,Ti)4O2[B2Si8O27]Clx; x = 0 to 1 |
| Tarbagataite | — | 3.26 | (K)Ca(Fe2+,Mn)7Ti2(Si4O12)2O2(OH)5 |
| Tausonite | — | 4.88 | SrTiO3 |
| Tazheranite | — | 5.01 | (Zr,Ti,Ca)(O)2 |
| Tazzoliite | — | 4.49 | Ba4-xNaxTi2Nb3SiO17[PO2(OH)2]x(OH)1-2x; (0=x=0.5) |
| Tegengrenite | — | 0.00 | Mg2(Sb,Mn)O4 |
| Thoriopyrochlore | — | 0.00 | (Ca,Th,Na,Ce)2(Nb,Zr,Ti,Fe)2(O,OH,F)7 |
| Thorutite | — | 5.82 | (Th,U,Ca)Ti2(O,OH)6 |
| Tienshanite | — | 3.29 | K(Na,K)9Ca2Ba6Mn2+6Ti6B12Si36O114(O,OH,F)11 |
| Tietaiyangite | — | 0.00 | (Fe3+)4FeTiO9 |
| Tiettaite | — | 2.42 | Na17Fe3+TiSi16O29(OH)30·2H2O |
| Tinaksite | — | 2.82 | K2Na(Ca,Mn)2TiOSi7O18(OH) |
| Tisinalite | — | 2.69 | Na3Mn2+TiSi6O15(OH)3 |
| Tistarite | — | 0.00 | Ti2O3 |
| Titanite | — | 3.40 | CaTiSiO5 |
| Titanium | — | 4.30 | Ti |
| Titanoholtite | — | 3.66 | (Ti0.750.25)Al6BSi3O18 |
| Titanomaghemite | — | 0.00 | Fe(Fe,Ti)2O4 |
| Titanowodginite | — | 6.86 | Mn2+TiTa2O8 |
| Titantaramellite | — | 4.00 | Ba4(Ti,Fe3+,Mg)4(O,OH)2[B2Si8O27]Clx |
| Tivanite | — | 4.17 | TiV3+O3(OH) |
| Tomichite | — | 4.16 | V3+4Ti4+3As3+O13(OH) |
| Tranquillityite | — | 4.70 | Fe2+8Ti3Zr2Si3O24 |
| Traskite | — | 3.71 | Ba21Ca(Fe2+,Mn,Ti)4(Ti,Fe,Mg)12(Si12O36)(Si2O7)6(O,OH)30Cl6·14H2O |
| Trattnerite | — | 2.68 | Fe3+2(Mg3Si12)O30 |
| Trimounsite-(Y) | — | 5.00 | Y2Ti2O5SiO4 |
| Tsepinite-Ca | — | 2.73 | (Ca,K,Na)2-x(Ti,Nb)2Si4O12(OH,O)2·4H2O |
| Tsepinite-K | — | 2.88 | (K,Ba,Na)2(Ti,Nb)2Si4O12(OH,O)2·3H2O |
| Tsepinite-Na | — | 2.74 | (Na,H3O,K,Sr,Ba)12Ti8(Si4O12)4(OH,O)8·12-16H2O |
| Tsepinite-Sr | — | 2.67 | (Sr,Ba,K)(Ti,Nb)2Si4O12(OH,O)2·3H2O |
| Tundrite-(Ce) | — | 4.08 | Na2Ce2TiO2SiO4(CO3)2 |
| Tundrite-(Nd) | — | 3.70 | Na2Nd2TiO2(SiO4)(CO3)2 |
| Tuperssuatsiaite | — | 2.47 | Na2(Fe3+,Mn2+)3Si8O20(OH)2·4H2O |
| Ulvöspinel | — | 0.00 | Fe2+2TiO4 |
| Uranopolycrase | — | 5.50 | (U,Y)(Ti,Nb,Ta)2(O,OH)6 |
| Vanadoandrosite-(Ce) | — | 0.00 | Mn2+CeV3+AlMn2+O(Si2O7)(SiO4)(OH) |
| Varennesite | — | 2.31 | Na8(Mn,Fe3+,Ti)2Si10O25(OH,Cl)2·12H2O |
| Veblenite | — | 3.05 | K22Na(Fe2+5Fe3+4Mn2+7)Nb3Ti(Si2O7)2(Si8O22)2O6(OH)10·3H2O |
| Verbierite | — | 0.00 | BeCr3+2TiO6 |
| Verplanckite | — | 3.52 | Ba4Mn2+2Si4O12(OH,H2O)3Cl3 |
| Vigezzite | — | 5.54 | (Ca,Ce)(Nb,Ta,Ti)2O6 |
| Vigrishinite | — | 0.00 | Zn2Ti4-xSi4O14(OH,H2O)8 (x<1) |
| Vinogradovite | — | 2.88 | Na4Ti4(Si2O6)2[(Si,Al)4O10]O4·(H2O,Na,K)3 |
| Voronkovite | — | 2.97 | Na15(Na,Ca,Ce)3(Mn,Ca)3Fe3Zr3Si26O72(OH,O)4Cl·H2O |
| Vuonnemite | — | 3.13 | Na11Ti4+Nb2(Si2O7)2(PO4)2O3F |
| Vuoriyarvite-K | — | 2.95 | (K,Na)12Nb8(Si4O12)4O8·12-16H2O |
| Walfordite | — | 0.00 | (Fe3+,Te6+,Ti4+,Mg)Te4+3O8 |
| Wangdaodeite | — | 0.00 | FeTiO3 |
| Warwickite | — | 3.36 | (Mg,Ti,Fe,Cr,Al)2O(BO3) |
| Wassonite | — | 4.45 | TiS |
| Watatsumiite | — | 0.00 | KNa2LiMn2V2Si8O24 |
| Wiluite | — | 3.36 | Ca19(Al,Mg)13(B,Al)5(SiO4)10(Si2O7)4(O,OH)10 |
| Winstanleyite | — | 5.57 | TiTe4+3O8 |
| Xieite | — | 5.34 | FeCr2O4 |
| Yimengite | — | 4.34 | K(Cr,Ti,Fe,Mg)12O19 |
| Yoshimuraite | — | 4.13 | Ba2Mn2+2Ti(Si2O7)(PO4)O(OH) |
| Yttrobetafite-(Y) | — | 3.65 | (Y,U,Ce)2(Ti,Nb,Ta)2(O,OH)7 |
| Yttrocrasite-(Y) | — | 4.80 | (Y,Th,Ca,U)(Ti,Fe)2(O,OH)6 |
| Yttropyrochlore-(Y) | — | 3.60 | (Y,Na,Ca)2Nb2(O,OH)7 |
| Yttrotungstite-(Y) | — | 5.96 | Y(W,Fe,Si,Al,Ti)2(O,OH,H2O)9 |
| Yuanfuliite | — | 4.02 | Mg(Fe3+,Al)O(BO3) |
| Yuksporite | — | 3.05 | K4(Ca,Na)14(Sr,Ba)2(Mn,Fe)(Ti,Nb)4(O,OH)4(Si6O17)2(Si2O7)3(H2O,OH)3 |
| Zangboite | — | 5.09 | TiFeSi2 |
| Zeravshanite | — | 3.09 | Na2Cs4Zr3Si18O45·2H2O |
| Zimbabweite | — | 6.20 | Na(Pb,Na,K)2(Ta,Nb,Ti)4As4O18 |
| Zincohögbomite-2N2S | — | 4.36 | (Zn,Al,Fe)3(Al,Fe,Ti)8O15(OH) |
| Zincohögbomite-2N6S | — | 0.00 | (Zn,Al)7(Al,Fe3+,Ti,Mg)16O31(OH) |
| Zincostaurolite | — | 3.78 | Zn2Al9Si4O23(OH) |
| Zirconolite | — | 4.80 | (Ca,Y)Zr(Ti,Mg,Al)2O7 |
| Zirconolite-3O | — | 4.70 | (Ca,Fe,Y,Th)2Fe(Ti,Nb)3Zr2O14 |
| Zirconolite-3T | — | 4.70 | CaZrTi2O7 |
| Zircophyllite | — | 3.34 | K2NaMn2+7Zr2(Si4O12)2O2(OH)4F |
| Zirkelite | — | 4.70 | (Ti,Ca,Zr)O2-x |
| Zoltaiite | — | 4.83 | BaV4+2V3+12Si2O27 |
| Zorite | — | 2.36 | Na6Ti5Si12O34(O,OH)5·11H2O |
| Zvyaginite | — | 2.94 | NaZnNb2Ti[Si2O7]2O(OH,F)3(H2O)4+x, where (x < 1) |