| Arapovite | | (K,[ ])(Ca,Na) | | (U,Th)[Si | | O | | ] · H | | O |
|
| Steenstrupine-(Ce) | | Na | | Mn | | (Fe | | ,Mn | | ) | | Ce | | (Zr,Th)[(OH) | | |HPO | | |(PO | | ) | | |(Si | | O | | ) | | ]·2H | | O |
|
| 'Thorian Britholite-(Ce)' | | (Na,Ca,Ce,Th) | | (P,Si) | | O | | (OH,F) |
|
| Thornasite | | (Na,K)Th,Si | | (O,OH,F,Cl) | | ·8H | | O |
|
| Tuliokite | |
| Turkestanite | | (K,[ ])(Ca,Na) | | (Th,U)[Si | | O | | ] · nH | | O |
|
| Umbozerite | |