Mineralape
Dravite
Vassil·Public domain·Wikimedia

Dravite

NaMg3Al6(Si6O18)(BO3)3(OH)3OH
Trigonale root IMA grandfathered

Composizione

Composizione (% in peso)
O
Si
Al
Mg
  • OOxygen51.7%
  • SiSilicon17.6%
  • AlAluminium16.9%
  • MgMagnesium7.6%
  • BBoron3.4%
  • NaSodium2.4%
  • HHydrogen0.4%

Etimologia

Nome derivato da Drava.