Oxy-chromium-dravite

Properties

Formula NaCr3(Cr4Mg2)(Si6O18)(BO3)3(OH)3O
Abbreviation Ocdrv
Classification Tourmaline
IMA Status Approved (IMA 2011-097)
Search other databases webmineral.com, mindat.org, rruf.info, mineralienatlas.de, Handbook of Mineralogy, American Mineralogist Crystal Structure Database
Tags Hydroxide , Mineral, Borate

Composition

Element Atoms
B 3
O 31
Na 1
H 3
Mg 2
Si 6
Cr 7
Total: 53