AM_Aegirine_21 Formula: Na Fe Si2 O6 Name: Aegirine Unit cell: 9.4711 8.6068 5.1915 90.0 106.633 90.0 , V=405.48 Space group: C12/C1 (15)

McCarthy A C , Downs R T , Thompson R M , Redhammer G J , American Mineralogist , 93 (2008) p.1829-1837, In situ high-pressure single-crystal X-ray study of aegirine, NaFe3+Si2O6,, and the role of M1 size in clinopyroxene compressibility, Locality: synthetic, Note: Pressure = 7.3 GPa