Alkaline, Chalcogen, Keszler, Structural properties

• B-O-Sc-Sr
• B-Cu-O-Sr
• B-Ba-Fe-Ho-O-Sr
• Ba-Mg-O-Si
• Al-B-O-Sr-Y
• metalloid
• chalcogen
• alkaline
• orthoborate
• trigonal
• monoclinic
• orthorhombic
• hexagonal
• tetragonal