Cordierite Hochella M F, Brown G E, Ross F K, Gibbs G V American Mineralogist 64 (1979) 337-351 High-temperature crystal chemistry of hydrous Mg- and Fe-cordierite White Well, T = 775 C _database_code_amcsd 0000707 17.149 9.759 9.352 90 90 90 Cccm atom x y z occ B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3) Mg .1626 .5 .25 .955 .00109 .00385 .00655 0 0 .00030 Fe .1626 .5 .25 .045 .00109 .00385 .00655 0 0 .00030 Al11 .25 .25 .25 .00125 .00363 .00429 .00035 0 0 Si16 0 .5 .25 .00088 .00352 .00342 0 0 0 Si21 .1917 .0785 0 .00087 .00240 .00373 .00013 0 0 Al26 .0500 .3070 0 .00091 .00335 .00382 .00027 0 0 Si23 -.1347 .2363 0 .00086 .00273 .00340 -.00040 0 0 O11 .2468 .1042 .1398 .00217 .00414 .00450 .00016 -.00122 -.00095 O16 .0619 .4159 .1510 .00122 .00550 .00545 .00023 -.00073 -.00234 O13 -.1734 .3082 .1422 .00179 .00501 .00549 -.00055 .00095 -.00140 O21 .1216 .1843 0 .00165 .00615 .01206 .00217 0 0 O26 -.0438 .2484 0 .00122 .00883 .00875 -.00014 0 0 O23 -.1630 .0778 0 .00243 .00298 .00850 -.00155 0 0