AM_Hedenbergite_11 Formula: Ca Fe Si2 O6 Name: Hedenbergite Unit cell: 9.744 8.889 5.181 90.0 104.18 90.0 , V=435.08 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 = 4.2 GPa, Note: cell parameters obtained by linear regression