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 = 200 K _database_code_amcsd 0004194 9.8395 9.0177 5.2425 90 104.724 90 C2/c atom x y z Uiso Ca2 0 .3008 .25 .0054 Fe1 0 .9079 .25 .0035 Si .2878 .0927 .2322 .0028 O1 .1194 .0907 .1528 .0051 O2 .3629 .2465 .3237 .0062 O3 .3503 .0202 -.0078 .0051