Fe-Mg-O-Si, Pnma, Structural properties

• Al-Fe-Mg-O-Si
• Ca-Fe-Mg-O-Si
• Al-Ca-F-Fe-H-Mg-Na-O-Si-Ti
• Al-B-Fe-Mg-O-Si
• metalloid
• transitional
• alkaline
• chalcogen
• disordered
• orthorhombic