IMA mineral species
Vanadio-oxy-chromium-dravite
NaV₃(Cr₄Mg₂)(Si₆O₁₈)(BO₃)₃(OH)₃O
Tourmaline mineral.
Properties
⛏ Mohs hardness7.5
💅🪙🍶🔪💎
Harder than quartz: scratches glass and steel.
| Chemical formula | NaV₃(Cr₄Mg₂)(Si₆O₁₈)(BO₃)₃(OH)₃O |
|---|---|
| Elements | Na, V, Cr, Mg, Si, O, B, H |
| Crystal system | Trigonal |
| Mohs hardness | 7.5 |
| Density | — |
| Streak | — |
| Color | — |
| IMA symbol | Vocdrv |
“—” means no reliable value in Wikidata yet. Check Mindat for full data.
🌍 Where it's found
Type locality (where it was first described): Pereval marble quarry, Russia
- Type locality
- Notable source / deposit
- Country of origin
Marker positions are approximate (region or locality level). Type localities from Wikidata; notable sources curated by Crystopedia.
Learn more
- Vanadio-oxy-chromium-dravite on Mindat.org
- Wikidata item Q19862027 (source of this page's data – you can correct it there)
IMA mineral species
7–8
Trigonal