Diopside Secco L, Martignago F, Dal Negro A, Reznitskii L Z, Sklyarov E V American Mineralogist 87 (2002) 709-714 Crystal chemistry of Cr-V-rich clinopyroxenes Sample 2 _database_code_amcsd 0002807 9.6595 8.8263 5.2686 90 106.596 90 C2/c atom x y z occ Uiso SiT .28932 .09197 .23203 .994 .00455 AlT .28932 .09197 .23203 .006 .00455 CrM1 0 .90580 .25 .298 .00514 VM1 0 .90580 .25 .285 .00514 MgM1 0 .90580 .25 .388 .00514 AlM1 0 .90580 .25 .017 .00514 FeM1 0 .90580 .25 .011 .00514 MnM1 0 .90580 .25 .001 .00514 CaM2 0 .30198 .25 .413 .00914 NaM2 0 .30198 .25 .587 .00914 O1 .11451 .08201 .13990 .00718 O2 .36058 .25413 .31074 .00857 O3 .35176 .01384 .00207 .00738