Al-As, Chalcogen, Structural properties

• Al-As-O
• Al-As-H-O
• Al-As-Cu-Dy-H-O
• Al-As-Cu-Er-H-O
• Al-As-Ce-Cu-H-O
• pnictogen
• chalcogen
• metalloid
• transitional
• monoclinic
• trigonal
• orthorhombic
• triclinic
• tetragonal