광물 데이터베이스와 크리스탈 테라피광물HydroxyledgrewiteHydroxyledgrewiteCa9(SiO4)4(OH)2Monoclino IMA approved구성Composizione (% in peso)CaOSiCaCalcium47.3%OOxygen37.7%SiSilicon14.7%HHydrogen0.3%어원명명 유래 hydroxyl.