| Mineral | Zoisite |
|---|---|
| Formula | {Ca2}{Al3}(Si2O7)(SiO4)O(OH) |
| Crystal Form | Orthorhombic/Dipyramidal [2/m 2/m 2/m] |
| Cleavage | Perfect on {010}, Imperfect on {100} |
| Color | Colorless, purple, blue, grey, yellowish-brown, yellow, pink, green |
| Density | 3.1 – 3.4 g/cm3 |
| Diaphaneity | Transparent, Translucent |
| Fracture | Irregular/Uneven, Conchoidal |
| Hardness | 6.0 - 7.0 |
| Lustre | Vitreous |
| Streak | White |
| Dana 8 Class | 8.2.1b.1 |
| Strunz Class | 8/C.23-100 |
| Mindat | mindat.org |
| WebMineral | WebMineral |
| ID | 289 |