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 = 375 C
_database_code_amcsd 0000706
17.113 9.741 9.358 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    .1622    .5   .25 .955 .00075 .00259 .00436       0       0  .00010
Fe    .1622    .5   .25 .045 .00075 .00259 .00436       0       0  .00010
Al11    .25   .25 .2500      .00093 .00224 .00272  .00022       0       0
Si16      0    .5   .25      .00060 .00245 .00228       0       0       0
Si21  .1920 .0783     0      .00060 .00155 .00239  .00011       0       0
Al26  .0506 .3076     0      .00062 .00220 .00268  .00021       0       0
Si23 -.1351 .2369     0      .00057 .00176 .00247 -.00014       0       0
O11   .2470 .1036 .1407      .00137 .00277 .00308  .00024 -.00040 -.00068
O16   .0620 .4166 .1512      .00090 .00376 .00331  .00024 -.00016 -.00150
O13  -.1736 .3090 .1418      .00111 .00342 .00285 -.00026  .00036 -.00090
O21   .1220 .1846     0      .00135 .00368 .00718  .00133       0       0
O26  -.0434 .2478     0      .00069 .00594 .00711 -.00031       0       0
O23  -.1641 .0793     0      .00163 .00189 .00779 -.00076       0       0