KCa4Si8O20F[H2O]8 tP84 128

• Ca-F-H-K-O-Si
• Ca-F-H-K-Na-O-Si
• H-K-O-Si-Sr
• Ca-H-K-O-Si
• structural properties
• refractive index
• values of refractive index
• optical properties
• Mohs hardness
• alkali
• alkaline
• chalcogen
• metalloid
• silicate
• tetragonal