Kemmler sack, Quaternary, Structural properties

• Ba-Nb-O-W
• Ba-Co-Ir-O
• Ba-Gd-O-U
• Ba-O-U-Y
• Li-Mn-O-Ru
• chalcogen
• quaternary
• alkaline
• transitional
• oxide
• trigonal
• cubic
• hexagonal
• orthorhombic
• tetragonal