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 = 298 K _database_code_amcsd 0004193 9.8450 9.0293 5.2450 90 104.775 90 C2/c atom x y z Uiso Ca2 0 .3003 .25 .0072 Fe1 0 .9075 .25 .0046 Si .2878 .0924 .2325 .0036 O1 .1196 .0901 .1523 .0055 O2 .3628 .2464 .3232 .0075 O3 .3501 .0197 .9926 .0061