Aegirine, Chalcogen, 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-Ca-Fe-Mn-Na-O-Si-Ti
• structural properties
• magnetic properties
• thermal and thermodynamic properties
• mechanical properties
• spontaneous magnetic moment
• aegirine
• alkali
• metalloid
• chalcogen
• transitional
• monoclinic