A-Z register
- Ichnusaite Th4+(Mo6+O4)2·3H2O
- Icosahedrite Al63Cu24Fe13
- Ikorskyite KMn3+(Si4O10)·3H2O
- Ilímaussite-(Ce) (Ba,Na)10K3Na4.5Ce3+5(Nb5+,Ti4+)6O6(Si12O36)(Si9O18)(O,OH)24
- Ilmenite Fe2+Ti4+O3
- Imhofite Tl1+5.8As3+15.4S2-26
- Indigirite Mg2Al2(CO3)4(OH)2·15H2O
- Indicolite A(D₃)G₆(T₆O₁₈)(BO₃)₃X₃Z
- Inesite Ca2Mn2+7Si10O28(OH)2·5H2O
- Intersilite Na6Mn2+(Ti4+,Nb5+)Si10(O,OH)28·4H2O
- Iquiqueite K3Na4Mg(Cr6+O4)B24O39(OH)·12H2O
- Iraqite-(La) KCa2(La,Ce3+,Th4+)Si8O20
- Irhtemite Ca4Mg(As5+O4)2(As5+O3OH)2·4H2O
- Irtyshite Na2Ta5+4O11
- Isolueshite NaNb5+O3
- Itsiite Ba2Ca(BSi2O7)2
- Ivanyukite-Na Na2Ti4+4(SiO4)3O2(OH)2·6H2O
- Ivanyukite-Na-<i>T</i> Na3Ti4(SiO4)3O3(OH)·7H2O
- Ixiolite-(Sc) (Ta5+0.5Sc0.5)O2
- Iyoite Mn2+Cu2+Cl(OH)3