Hedenbergite
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: Ae051, T = 298 K
_database_code_amcsd 0004196
9.8354 9.0108 5.2560 90 105.088 90 C2/c
atom      x     y     z  occ  Uiso
Ca2       0 .3003   .25 .949 .0100
Na2       0 .3003   .25 .051 .0100
Fe2+1     0 .9069   .25 .949 .0067
Fe3+1     0 .9069   .25 .051 .0067
Si    .2879 .0923 .2326      .0044
O1    .1189 .0893 .1502      .0077
O2    .3624 .2473 .3226      .0098
O3    .3502 .0190 .9946      .0082