Aegirine
Redhammer G J, Amthauer G, Roth G, Tippelt G, Lottermoser W
American Mineralogist 91 (2006) 1271-1292
Single crystal X-ray diffraction and temperature dependent 57Fe Mossbauer
spectroscopy on the hedenbergite - aegirine (Ca,Na)(Fe2+,Fe3+)Si2O6 solid solution
Locality: synthetic
Sample: Ae504
_database_code_amcsd 0004204
9.7412 8.9086 5.2776 90 106.221 90 C2/c
atom      x     y     z  occ  Uiso
Na2       0 .3010   .25 .512 .0088
Ca2       0 .3010   .25 .488 .0088
Fe3+1     0 .9024   .25 .512 .0039
Fe2+1     0 .9024   .25 .488 .0039
Si    .2888 .0906 .2337      .0024
O1    .1163 .0832 .1439      .0069
O2    .3595 .2514 .3133      .0068
O3    .3511 .0137 .0024      .0059