8-equatorial capped pentagonal prism 18-vertex, Metalloid, Monoclinic

• Fe-Te
• Gd-Ge-Si
• Ge-Si-Tb
• Er-Si
• Ge-Nd-Si
• thermal and thermodynamic properties
• magnetic properties
• electronic and electrical properties
• phase transitions
• structural properties
• metalloid
• rare earth
• ternary
• transitional
• lanthanoid