Diopside Oberti R, Caporuscio F A American Mineralogist 76 (1991) 1141-1152 Crystal chemistry of clinopyroxenes from mantle eclogites: A study of the key role of the M2 site population by means of crystal-structure refinement sample SBB 61, Di47Jd40, diopside - jadeite join _database_code_amcsd 0001369 9.561 8.730 5.249 90 107.00 90 C2/c atom x y z occ Biso Al1 0 .9056 .25 .52 0.42 Mg1 0 .9056 .25 .44 0.42 Fe1 0 .9056 .25 .03 0.42 Ti1 0 .9056 .25 .01 0.42 Ca2 0 .3006 .25 .47 0.85 Na2 0 .3006 .25 .41 0.85 Fe2 0 .3006 .25 .04 1.06 Mg2 0 .3006 .25 .02 1.06 Si .2886 .0928 .2290 0.43 O1 .1120 .0805 .1339 0.83 O2 .3606 .2569 .3067 0.89 O3 .3523 .0130 .0012 0.69