礦物資料庫與水晶療法礦物Chromium-draviteChromium-draviteNa(Mg3)Cr3⁺6(Si6O18)(BO3)3(OH)3(OH)Trigonale IMA redefined成分Composizione (% in peso)OSiMgCrOOxygen58.4%SiSilicon19.9%MgMagnesium8.6%CrChromium6.1%BBoron3.8%NaSodium2.7%HHydrogen0.5%詞源命名來源 dravite.