Garnet

Al₂Ca_0.75Fe_1.89Mg_0.24Mn_0.09O₁₂Si₃

Griffen, D. T.Hatch, D. M.Phillips, W. R.Kulaksiz, S.

American Mineralogist (1992) 77, 399-406

a=11.6207Å   b=11.6207Å   c=11.6230Å

α=90°   β=90°   γ=90°