Mg-Nb-O-Pb, Nb-x polyhedra, Nonmetal, Structural properties

• Mg-Nb-O-Pb-Ti
• La-Mg-Nb-O-Pb
• Fe-Mg-Nb-O-Pb-W
• Bi-Mg-Nb-O-Pb
• nonmetal
• disordered
• alkaline
• chalcogen
• oxide
• cubic
• trigonal
• tetragonal
• monoclinic
• orthorhombic