Hedenbergite Zhang L, Ahsbahs H, Hafner S S, Kutoglu A American Mineralogist 82 (1997) 245-258 Single-crystal compression and crystal structure of clinopyroxene up to 10 GPa Sample: at P = 1.1 GPa Note: cell parameters obtained by linear regression _database_code_amcsd 0001862 9.810 8.985 5.224 90 104.58 90 C2/c atom x y z Biso Ca 0 .30040 .25 .68 Fe 0 .90764 .25 .47 Si .28782 .09305 .23216 .43 O1 .11951 .09068 .15267 .57 O2 .36247 .24747 .32409 .88 O3 .35052 .02100 .99087 .70