Birefringent, Mechanical properties, Trigonal

• Ga-La-O-Si
• Ni-O
• Li-Nb-O
• C-Ca-O
• H-O-S-Sr
• elasticity
• elastic moduli
• elastic stiffness coefficient
• isothermal bulk modulus
• elastic compliance
• birefringent
• nonmetal
• disordered
• chalcogen
• transitional