Thorium Orthosilicate
| Compound | Thorium Orthosilicate |
| Synonyms | thorite |
| Formula | ThSiO4 |
| Molecular Formula | O4SiTh |
| Molecular Weight | 324.122 |
| CAS RN: | 51184-23-7 |
| Properties | black to orange; zircon structure. a=0.71328 nm, c=0.63188 nm; hardness is 4.5-5 [HAW93] [SUB90] |
| Solubility | |
| Density, g/cm³: | 4.4-5.2 [HAW93] |
| Melting point, °C | |
| Boiling point, °C | |
| Reactions: | |
| Thermal Expansion Coefficient | (25 to 500 °C) 2.5 x 10ˉ6/°C [SUB90] |