AM_Pyroxene-ideal_92 Formula: Fe Si O3 Name: Pyroxene-ideal Unit cell: 9.552 8.844 5.106 90.0 103.8 90.0 , V=418.89 Space group: C12/C1 (15)

Thompson R M , Downs R T , American Mineralogist , 89 (2004) p.614-628, Model pyroxenes II: Structural variation as a function of tetrahedral rotation, model ferrosilite at 1.87 GPa after Hugh-Jones et al. (1995), with O3-O3-O3 angle = 138.3 and model oxygen radius = 1.366