Dravite
Properties
| Formula | NaMg3Al6(Si6O18)(BO3)3(OH)3(OH) |
| Abbreviation | Drv |
| Classification | Tourmaline |
| IMA Status | Grandfathered (pre-IMA), 1884 |
| Search other databases | webmineral.com, mindat.org, rruf.info, mineralienatlas.de, Handbook of Mineralogy, American Mineralogist Crystal Structure Database |
| Crystal symmetry | Trigonal, Point group 3m, Space group R3m (#160) |
| Tags | Borate , Hydroxide , Mineral, Aluminosilicate |
Composition
| Element | Atoms |
|---|---|
| H | 4 |
| B | 3 |
| O | 31 |
| Na | 1 |
| Mg | 3 |
| Si | 6 |
| Al | 6 |
| Total: | 54 |