Cordierite Geiger C A, Armbruster T, Khomenko V, Quartieri S American Mineralogist 85 (2000) 1255-1264 Cordierite I: The coordination of Fe2+ Sample: C005 _database_code_amcsd 0002495 17.101 9.736 9.331 90 90 90 Cccm atom x y z occ U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) Si21 .30792 .07805 0 .00535 .00402 .00546 -.00028 0 0 Si16 0 0 .25 .0052 .0064 .0052 0 0 2 Si23 .36486 .23691 .5 .0047 .0049 .0052 -.00059 0 0 Al26 .05055 .19245 0 .0047 .00545 .0054 -.00035 0 0 Al11 .25 .25 .25005 .00743 .00561 .0055 -.00119 0 0 MgM .16248 0 .25 .0058 .0060 .0084 0 0 -.0000 CH0 .5 0 .5 CH1 .5 0 .25 CH2 .45272 0 .25 O16 .06208 .08413 .15114 .0073 .0096 .0079 -.0011 -.0002 .0 O11 .25328 .10318 .14144 .0108 .0072 .0072 -.0007 .0036 -.0 O13 .32664 .30963 .64171 .0088 .0088 .0074 -.0016 .0020 -.0 O21 .37794 .18492 0 .0097 .0099 .0164 -.0055 0 0 O26 .45664 .24873 .5 .0045 .0150 .0161 -.0022 0 0 O23 .33579 -.07929 0 .0132 .0052 .0171 .0031 0 0