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 = 24 C afer heating.
_database_code_amcsd 0000708
17.119 9.746 9.361 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    .1624    .5   .25 .955 .00044 .00122 .00225       0       0       0
Fe    .1624    .5   .25 .045 .00044 .00122 .00225       0       0       0
Al11    .25   .25 .2502      .00051 .00106 .00174  .00015       0       0
Si16      0    .5   .25      .00033 .00170 .00135       0       0       0
Si21  .1924 .0778     0      .00032 .00091 .00167  .00001       0       0
Al26  .0508 .3079     0      .00032 .00124 .00153  .00005       0       0
Si23 -.1352 .2374     0      .00023 .00133 .00141 -.00013       0       0
O11   .2473 .1034 .1409      .00066 .00282 .00153  .00003 -.00031 -.00011
O16   .0623 .4166 .1513      .00057 .00215 .00198 -.00003 -.00010 -.00072
O13  -.1733 .3102 .1414      .00060 .00174 .00209 -.00020  .00021 -.00039
O21   .1222 .1844     0      .00073 .00178 .00401  .00061       0       0
O26  -.0432 .2487     0      .00058 .00261 .00360 -.00033       0       0
O23  -.1646 .0803     0      .00088 .00140 .00412 -.00002       0       0