Keszler, Metalloid

• B-Li-Na-O
• Ba-Cu-F-Te
• B-O-Sc-Sr
• B-Ba-Cu-O
• B-Ba-O-Sc
• structural properties
• optical properties
• phase transitions
• fusion
• temperature for congruent melting
• metalloid
• chalcogen
• alkaline
• orthoborate
• trigonal
• monoclinic
• orthorhombic
• tetragonal
• hexagonal