Chalcogen, Forsterite, Fe-Mg-O-Si, Structural properties

• Ca-Fe-Mg-O-Si
• Fe-H-Mg-O-Si
• Fe-Mg-Ni-O-Si
• Fe-Mg-Mn-Ni-O-Si
• alkaline
• chalcogen
• disordered
• forsterite
• orthorhombic