| Mineral | Natrolite |
|---|---|
| Formula | Na2Al2Si3O10 • 2(H2O) |
| Crystal Form | Orthorhombic/Pyramidal [mm2] |
| Cleavage | [110] Perfect, [010] Imperfect |
| Color | White, Colorless, Red, Yellowish white, Reddish white |
| Density | 2.2 g/cm3 |
| Diaphaneity | Transparent to Translucent |
| Fracture | Brittle |
| Hardness | 5.5 - 6.0 |
| Lustre | Vitreous - Silky |
| Streak | White |
| Type Loc. | Hohentwiel, Singen, Hegau, Baden-Württemberg, Germany |
| Dana 8 Class | 77.1.5.1 |
| Strunz Class | VIII/J.21-10 |
| Mindat | mindat.org |
| WebMineral | WebMineral |
| ID | 14 |