AM_Hedenbergite_15 Formula: Ca Fe Si2 O6 Name: Hedenbergite Unit cell: 9.686 8.789 5.141 90.0 103.89 90.0 , V=424.86 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 = 7.6 GPa, Note: cell parameters obtained by linear regression