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Dravite

NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃OH

Trigonale root IMA grandfathered

Состав

Composizione (% in peso)

O

Si

Al

Mg

OOxygen51.7%
SiSilicon17.6%
AlAluminium16.9%
MgMagnesium7.6%
BBoron3.4%
NaSodium2.4%
HHydrogen0.4%

Этимология

Назван в честь Drava.