Al-Ca-O, Chalcogen, Corundum, Disordered

• C220711-6
• C406607-3
• C980226-6
• C204117-6
• C204118-3
• C204120-4
• C207161-5
• C207163-3
• C209154-4
• C209155-7
• C209156-3
• C213110-6
• C213112-5
• C217063-4