MgO3Si
Jahn, S.Martonak, R.
American Mineralogist (2009) 94, 950-956
a=9.171Å b=8.513Å c=5.254Å
α=90° β=90° γ=90°
a=9.177Å b=8.816Å c=4.812Å
a=9.039Å b=8.695Å c=5.089Å