Cordierite
Malcherek T, Domeneghetti M C, Tazzoli V, Ottolini L, McCammon C A, Carpenter M A
American Mineralogist 86 (2001) 66-79
Structural properties of ferromagnesian cordierites
Sample: 85131, Mt. Bity, Madagaskar, T = 900 C, t = 24 h
_database_code_amcsd 0002614
17.1135 9.7359 9.3330 90 90 90 Cccm
atom        x       y      z  occ   Uiso U(1,1) U(2,2) U(3,3)  U(1,2)  U(1,3)  U(2,3)
MgM    .33754       0    .25 .810 .00665 .00529 .00583 .00883       0       0 -.00007
FeM    .33754       0    .25 .190 .00665 .00529 .00583 .00883       0       0 -.00007
AlT11     .25     .25 .25009 .988 .00603 .00679 .00547 .00583  .00110       0       0
FeT11     .25     .25 .25009 .012 .00603 .00679 .00547 .00583  .00110       0       0
SiT16       0      .5    .25      .00498 .00446 .00556 .00491       0       0       0
SiT21  .19202  .07808      0      .00445 .00460 .00341 .00536  .00023       0       0
SiT23  .13512 -.23696      0      .00453 .00379 .00429 .00550 -.00069       0       0
AlT26  .05050  .30757      0      .00468 .00388 .00466 .00549  .00055       0       0
O11    .24663 -.10299 .35858      .00788 .00981 .00661 .00722 -.00081  .00297 -.00070
O16    .06211 -.41584 .34883      .00781 .00660 .00914 .00769 -.00090  .00007 -.00335
O13   -.17333 -.30942 .35828      .00805 .00814 .00844 .00757  .00142 -.00212 -.00216
O26    .04344 -.24918      0      .01148 .00440 .01414 .01591 -.00190       0       0
O21    .12205  .18480      0      .01152 .00932 .00952 .01572  .00541       0       0
O23    .16401 -.07922      0      .01139 .01268 .00504 .01644 -.00301       0       0
NaCh2       0       0      0 .052   .083   .039   .016   .193    .008       0       0