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: Hd21, T = 100K _database_code_amcsd 0004195 9.8357 9.0078 5.2408 90 104.664 90 C2/c atom x y z Uiso Ca2 0 .3012 .25 .0036 Fe1 0 .9082 .25 .0025 Si .2879 .0928 .2321 .0022 O1 .1195 .0909 .1523 .0038 O2 .3631 .2467 .3241 .0047 O3 .3504 .0206 .9912 .0037