Al2O3
Ishizawa, N.Miyata, T.Minato, I.Marumo, F.Iwai, S.
Acta Crystallographica, Section B (1980) 36, 228-230
a=4.754Å b=4.754Å c=12.99Å
α=90° β=90° γ=120°
a=4.844Å b=4.844Å c=13.27Å
BaO4S
Miyake MMinato IMorikawa HIwai S I
American Mineralogist (1978) 63, 506-510
a=7.157Å b=8.884Å c=5.457Å
α=90° β=90° γ=90°
O4SSr
Miyake, M.Minato, I.Morikawa, H.Iwai, S. I.
a=6.870Å b=8.371Å c=5.355Å
O4PbS
a=6.959Å b=8.482Å c=5.398Å