Birefringent, Chalcogen, Ga-La-O-Si, Trigonal

• Ga-La-Nd-O-Si
• Ga-Ge-La-O-Si
• Ga-Ho-La-O-Si
• mechanical properties
• electronic and electrical properties
• elasticity
• structural properties
• optical properties
• langasite
• lanthanoid
• chalcogen
• birefringent
• metalloid