Rodriguez iznaga

• Al-Ca-Fe-K-Mg-O-Si
• Al-H-K-O-Si-Zn
• Al-Fe-K-O-Si
• Al-Co-H-K-O-Si
• Al-H-K-Ni-O-Si
• structural properties
• transitional
• metalloid
• chalcogen
• alkali
• multinary
• monoclinic