Diopside Warren B, Bragg W Zeitschrift fur Kristallographie 69 (1928) 168-193 The structure of diopside, Ca Mg (Si O3)2. _cod_database_code 1011057 _database_code_amcsd 0017958 9.71 8.89 5.24 90 74.16 90 C2/c atom x y z Ca1 0 -.306 .25 Mg1 0 .083 .25 Si1 .211 .412 .237 O1 .378 .403 .139 O2 .142 .25 .32 O3 .156 .48 0