Minerals
Oxy-Chromium-Dravite
oxy-chromium-dravite
NaCr3(Cr4Mg2)(Si6O18)(BO3)3(OH)3O
Oxy-chromium-dravite: Mineral information, data and localities. — via www.mindat.org · Source
Overview
Oxy-Chromium-Dravite is a mineral species (tourmaline mineral). It crystallises in the trigonal system. Mohs hardness about 7.5.
Identification characteristics
- Mohs hardness 7.5
Scientific references
- Oxy-Chromium-Dravite — Wikidata. https://www.wikidata.org/wiki/Q19861119 Link