AM_Hedenbergite_9 Formula: Ca Fe Si2 O6 Name: Hedenbergite Unit cell: 9.772 8.931 5.2 90.0 104.34 90.0 , V=439.68 Space group: C12/C1 (15)

Zhang L , Ahsbahs H , Hafner S S , Kutoglu A , American Mineralogist , 82 (1997) p.245-258, Single-crystal compression and crystal structure of clinopyroxene up to 10 GPa, Sample: at P = 2.8 GPa, Note: cell parameters obtained by linear regression