Diopside Thompson R M, Downs R T American Mineralogist 93 (2008) 177-186 The crystal structure of diopside at pressure to 10 GPa Locality: DeKalb, New York Sample: P = 0.13 GPa _database_code_amcsd 0004496 9.7377 8.9151 5.2494 90 105.851 90 C2/c atom x y z Biso Mg 0 .90811 .25 .46 Ca 0 .30167 .25 .82 Si .28615 .09324 .22913 .51 O1 .11566 .08721 .14245 .75 O2 .36112 .25050 .31808 .80 O3 .35099 .01778 .99527 .69