IMA mineral species

Dravite

NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃OH

Cyclosilicate, tourmaline mineral.

Dravite specimen — Dravite cristal.jpg · Wikimedia Commons (see file page for author & license)

Properties

Chemical formula	NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃OH
Elements	Na, Mg, Al, Si, O, B, H
Crystal system	Trigonal
Mohs hardness	7
Density	—
Streak	—
Color	—
IMA symbol	Drv
Nickel–Strunz class	9.CK.05

“—” means no reliable value in Wikidata yet. Check Mindat for full data.

Learn more

Dravite on Mindat.org
Wikidata item Q2482759 (source of this page's data – you can correct it there)