| Calciosamarskite | |
| Ferrotitanowodginite | |
| 'Ilmenorutile' | |
| Koragoite | | (Mn | | ,Fe | | ) | | (Nb,Ta,Ti) | | (Nb,Mn) | | (W,Ta) | | O | | |
|
| 'Nioboaeschynite-(Nd)' | | (Nd,Ce,Ca,Th)(Nb,Ti,Fe,Ta) | | (O,OH) | | |
|
| 'Polymignite' | | (Ca,Fe,Y,Th)(Nb,Ti,Ta,Zr)O | | |
|
| 'Scandian Ixiolite (of Bergstol)' | |
| 'Scandian Ixiolite (of von Knorring)' | |
| 'Scheteligite' | | (Ca,Fe,Mn,Sb,Bi,Y) | | (Ti,Ta,Nb,W) | | (O,OH) | | |
|
| 'StrĂ¼verite' | |