AM_Hedenbergite
Formula: Si2 Fe Ca O6
Name: Hedenbergite
Unit cell: 9.845 9.024 5.245 90.0 104.74 90.0 , V=450.64
Space group: C12/C1 (15)

Cameron M , Sueno S , Prewitt C T , Papike J J , American Mineralogist , 58 (1973) p.594-618, High-temperature crystal chemistry of acmite, diopside, hedenbergite, jadeite,, spodumene, and ureyite, T = 24 C, pyroxene