8-equatorial capped pentagonal prism 18-vertex, Monoclinic, Rare earth

• Gd-Ge-Si
• Ge-Si-Tb
• Er-Si
• O-Sm
• Ce-Ru-Sn
• thermal and thermodynamic properties
• magnetic properties
• electronic and electrical properties
• structural properties
• magnetization
• rare earth
• lanthanoid
• metalloid
• ternary
• transitional