Diopside Gordon W A, Peacor D R, Brown P E, Essene E J, Allard L F American Mineralogist 66 (1981) 127-141 Exsolution relationships in a clinopyroxene of average composition Ca0.43Mn0.69Mg0.82Si2O6: X-ray diffraction and analytical electron microscopy _database_code_amcsd 0000805 9.76 8.93 5.27 90 106.44 90 C2/c atom x y z occ B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3) Mg1 0 .0929 .75 .94 0.0013 0.0011 0.0062 0 0.0006 0 Mn1 0 .0929 .75 .06 0.0013 0.0011 0.0062 0 0.0006 0 Ca2 0 .7072 .75 .87 0.0028 0.0051 0.0086 0 0.0003 0 Mn2 0 .7072 .75 .13 0.0028 0.0051 0.0086 0 0.0003 0 Si .2114 .4075 .7635 0.0018 0.0024 0.0095 -.0002 0.0012 -.0004 O1 .3829 .4121 .8557 0.0018 0.0038 0.0112 .0000 0.0011 -.0004 O2 .1358 .2510 .6715 0.0031 0.0028 0.0164 -.0001 0.0027 -.0004 O3 .1489 .4812 .9994 0.0021 0.0046 0.0080 -.0004 0.0007 -.0016