Aegirine Redhammer G J, Amthauer G, Lottermoser W, Treutmann W European Journal of Mineralogy 12 (2000) 105-120 Synthesis and structural properties of clinopyroxenes of the hedenbergite CaFeSi2O6 - aegirine NaFeSi2O6 solid-solution series Sample: ae90/13 _database_code_amcsd 0006823 9.6714 8.8152 5.2926 90 107.166 90 C2/c atom x y z occ Biso NaM2 0 .2994 .25 .90 .66 CaM2 0 .2994 .25 .10 .66 FeM1 0 .8992 .25 .44 SiT .2898 .0893 .2338 .39 O1 .1164 .0788 .1378 .58 O2 .3603 .2550 .3078 .77 O3 .3498 .0122 .0117 .65