Titanite

Al_0.26CaO₅SiTi_0.74

Chrosch, J.Colombo, M.Malcherek, T.Salje, E. K. H.Groat, L. A.Bismayer, U.

American Mineralogist (1998) 83, 1083-1091

a=7.0469Å   b=8.6901Å   c=6.5372Å

α=90°   β=113.944°   γ=90°