| Mineral | Hackmanite |
|---|---|
| Formula | Na8Al6Si6O24(Cl2,S) |
| Crystal Form | Isometric/Hexoctahedral [4/m 3 2/m] |
| Cleavage | [110] Poor |
| Color | Pink to grey white to white, photochromism giving pink-violet |
| Density | 2.3 g/cm3 |
| Diaphaneity | Transparent to Translucent |
| Fracture | Brittle - Conchoidal |
| Hardness | 6.0 |
| Lustre | Vitreous - Greasy |
| Streak | White |
| Dana 8 Class | 76.2.3.1 |
| Strunz Class | VIII/J.11-10 |
| Mindat | mindat.org |
| WebMineral | WebMineral |
| ID | 204 |