AM_Hedenbergite_37 Formula: (Na.1 Ca.9) Fe Si2 O6 Name: Hedenbergite Unit cell: 9.8472 9.0288 5.2466 90.0 104.789 90.0 , V=451.01 Space group: C12/C1 (15)

Redhammer G J , Amthauer G , Lottermoser W , Treutmann W , European Journal of Mineralogy , 12 (2000) p.105-120, Synthesis and structural properties of clinopyroxenes of the, hedenbergite CaFeSi2O6 - aegirine NaFeSi2O6 solid-solution series, Sample: hd/10