Chalcogen, Conductor, Disordered, Semiconductor, Kasper, Trigonal

• P1600519-2
• P1600519-1
• P1522617-3
• P1522617-1
• P1522617-2
• P1523331-7
• P1523331-6
• P1523331-8
• P1523331-5
• P1523331-4
• P1523331-3
• P1523331-2
• P1523331-1
• S1944533