| Mineral | Dravite |
|---|---|
| Formula | NaMg3Al6(BO3)3Si6O18(OH)4 |
| Crystal Form | Trigonal/Ditrigonal Pyramidal [3m] |
| Cleavage | [1011] Indistinct |
| Color | Pale brown to Dark-brown to Brownish-black, Dark-yellow, Blue |
| Density | 3.0 – 3.2 g/cm3 |
| Diaphaneity | Transparent, Translucent |
| Fracture | Irregular/Uneven, Conchoidal |
| Hardness | 7.5 |
| Lustre | Vitreous, Resinous |
| Streak | Light brown, rarely White |
| Type Loc. | Dobrova, Dravograd, Slovenia |
| Dana 8 Class | 61.3.1.10 |
| Strunz Class | VIII/E.19-50 |
| Mindat | mindat.org |
| WebMineral | WebMineral |
| ID | 368 |