| Mineral | Prehnite |
|---|---|
| Formula | Ca2Al2Si3O10(OH)2 |
| Crystal Form | Orthorhombic/Pyramidal [mm2] |
| Cleavage | [001] Distinct |
| Color | Colorless, Gray, Yellow, Yellow green, White |
| Density | 2.8 – 3.0 g/cm3 |
| Diaphaneity | Subtransparent to translucent |
| Fracture | Brittle |
| Hardness | 6.0 - 6.5 |
| Lustre | Vitreous - Pearly |
| Streak | Colorless |
| Dana 8 Class | 72.1.3.1 |
| Strunz Class | VIII/G.07-30 |
| Mindat | mindat.org |
| WebMineral | WebMineral |
| ID | 69 |