(Mg0.6Fe0.4)7Si8O22[OH]2 mS78 12

• Ca-H-Mg-Mn-Na-O-Si
• Fe-H-Mg-O-Si
• Al-Ca-Fe-H-Mg-Mn-Na-O-Si
• Ca-H-Mg-O-Si
• Al-Ca-Fe-H-Mg-O-Si
• structural properties
• values of refractive index
• optical properties
• refractive index
• hardness
• chalcogen
• metalloid
• alkaline
• silicate
• disordered
• monoclinic