Ludwigite

Al_0.2B₂Fe_1.404Mg_3.976O₁₀Ti_0.42

Brovkin, A. A.Rozhdestvenskaya, I. V.Rykova, E. A.

Crystallography Reports (2002) 47, 412-414

a=9.260Å   b=12.294Å   c=3.0236Å

α=90°   β=90°   γ=90°