MgO
Merli, M.Pavese, A.Ranzini, M.
Physics and Chemistry of Minerals (2002) 29, 455-464
a=4.2122Å b=4.2122Å c=4.2122Å
α=90° β=90° γ=90°
Fe0.037Mg0.963O
a=4.2163Å b=4.2163Å c=4.2163Å