AM_Aegirine_3
Formula: Si2 Fe Na O6
Name: Aegirine
Unit cell: 9.711 8.876 5.312 90.0 107.29 90.0 , V=437.18
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 = 800 C, pyroxene