AM_Ferrosilite_18 Formula: Fe Si O3 Name: Ferrosilite Unit cell: 18.3988 9.0444 5.2245 90.0 90.0 90.0 , V=869.39 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 = .83 GPa