O2Si
Ikuta, D.Kawame, N.Banno, S.Hirajima, T.Ito, K.Rakovan, J. F.Downs, R. T.Tamada, O.
American Mineralogist (2007) 92, 57-63
a=7.140Å b=12.371Å c=7.175Å
α=90° β=120.34° γ=90°
a=4.923Å b=4.923Å c=5.409Å
α=90° β=90° γ=120°
a=4.918Å b=4.918Å c=5.407Å
a=4.917Å b=4.917Å c=5.410Å