AM_Ferrosilite_20 Formula: Fe Si O3 Name: Ferrosilite Unit cell: 18.341 8.966 5.1925 90.0 90.0 90.0 , V=853.88 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 = 2.84 GPa