Al5.33 Si0.67 O9.33

Al_5.33O_9.33Si_0.67

Fischer, R.X.Schneider, H.Schmuecker, M.

American Mineralogist (1994) 79, 983-990

a=23.2173Å   b=7.6108Å   c=2.918Å

α=90°   β=90°   γ=90°