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: Hd102m, T = 298 K _database_code_amcsd 0004197 9.8248 8.9973 5.2549 90 105.013 90 C2/c atom x y z occ Uiso Ca2 0 .3006 .25 .904 .0086 Na2 0 .3006 .25 .096 .0086 Fe2+1 0 .9064 .25 .904 .0054 Fe3+1 0 .9064 .25 .096 .0054 Si .2878 .0922 .2328 .0040 O1 .1189 .0888 .1503 .0076 O2 .3619 .2476 .3214 .0088 O3 .3505 .0183 .9954 .0075