Aegirine, Alkali, Metalloid, Silicate, Transitional

• Fe-Na-O-Si
• Al-Ca-Fe-Mg-Na-O-Si-Ti
• Fe-Li-Na-O-Si
• Ca-Fe-Mg-Na-O-Si
• Al-Fe-Na-O-Si
• structural properties
• thermal and thermodynamic properties
• magnetic properties
• mechanical properties
• elasticity
• metalloid
• aegirine
• alkali
• chalcogen
• silicate
• monoclinic