Aliev, Chalcogen, Rare earth, Microhardness

• Bi-Pr-S
• O-S-Sb-Sm
• Nd-O-S-Sb
• As-O-S-Sm
• Cd-Er-S
• chalcogen
• rare earth
• lanthanoid
• sulfide
• ternary
• monoclinic
• tetragonal
• hexagonal
• orthorhombic
• cubic