Base de minéraux et lithothérapieMinérauxTomichiteDavid Hospital·CC BY-SA 4.0·WikimediaTomichiteV3⁺4Ti4⁺3As3⁺O13(OH) IMA approvedCompositionComposizione (% in peso)OAsVTiOOxygen56.2%AsArsenic18.8%VVanadium12.8%TiTitanium12.0%HHydrogen0.3%