AM_Ferrosilite_21 Formula: Fe Si O3 Name: Ferrosilite Unit cell: 18.311 8.939 5.181 90.0 90.0 90.0 , V=848.04 Space group: PBCA (61)

Hugh-Jones D A , Chopelas A , Angel R J , Physics and Chemistry of Minerals , 24 (1997) p.301-310, Tetrahedral compression in (Mg,Fe)SiO3 orthopyroxenes, Sample: P = 3.65 GPa