| Mineral | Thomsonite-Ca |
|---|---|
| Formula | NaCa2Al5Si5O20 • 6(H2O) |
| Crystal Form | Orthorhombic/Dipyramidal [2/m 2/m 2/m] |
| Cleavage | [101] Perfect, [100] Good |
| Color | Colorless, Greenish, Yellow, White, Pink |
| Density | 2.3 – 2.4 g/cm3 |
| Diaphaneity | Transparent to translucent |
| Fracture | Conchoidal |
| Hardness | 5.0 - 5.5 |
| Lustre | Vitreous |
| Streak | White |
| Dana 8 Class | 77.1.5.9 |
| Strunz Class | VIII/J.21-70 |
| Mindat | mindat.org |
| WebMineral | WebMineral |
| ID | 47 |