Pinch

• Al-As-Fe-H-Mg-Mn-O-Si
• As-Fe-H-Mo-Na-O
• O-Pb-Se
• Ba-Cu-O-Si
• Cu-Fe-H-Mo-Na-O-P
• structural properties
• chalcogen
• transitional
• disordered
• metalloid
• cubic
• monoclinic
• orthorhombic
• triclinic
• tetragonal