광물 데이터베이스와 크리스탈 테라피광물ErshoviteDavid Hospital·CC BY-SA 4.0·WikimediaErshoviteNa4K3(Fe,Mn,Ti)2Si8O22(OH)4·4H2O IMA approved구성Composizione (% in peso)OSiKFeNaOOxygen46.3%SiSilicon21.7%KPotassium11.3%FeIron10.8%NaSodium8.9%HHydrogen1.2%