Basis data mineral & terapi kristalMineralGrumantiteDavid Hospital·CC BY-SA 4.0·WikimediaGrumantiteNaSi2O4(OH)·H2OOrtorombico IMA approvedKomposisiComposizione (% in peso)OSiNaOOxygen53.9%SiSilicon31.5%NaSodium12.9%HHydrogen1.7%