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:126231 Tanzania, T = 900 C, t = 24h
_database_code_amcsd 0002612
17.089 9.729 9.350 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    .33750       0    .25 .908 .00648 .00540 .00611 .00793       0       0 -.00006
FeM    .33750       0    .25 .092 .00648 .00540 .00611 .00793       0       0 -.00006
AlT11     .25     .25 .25014 .988 .00580 .00670 .00535 .00535  .00131       0       0
FeT11     .25     .25 .25014 .012 .00580 .00670 .00535 .00535  .00131       0       0
SiT16       0      .5    .25      .00468 .00400 .00567 .00437       0       0       0
SiT21  .19241  .07782      0      .00419 .00441 .00368 .00449  .00023       0       0
SiT23  .13509 -.23748      0      .00427 .00377 .00443 .00460 -.00061       0       0
AlT26  .05078  .30787      0      .00452 .00375 .00500 .00479  .00057       0       0
O11    .24706 -.10275 .35876      .00777 .00958 .00707 .00666 -.00055  .00302 -.00077
O16    .06229 -.41607 .34893      .00745 .00620 .00912 .00703 -.00095  .00024 -.00316
O13   -.17325 -.31013 .35842      .00779 .00792 .00847 .00698  .00127 -.00208 -.00236
O26    .04320 -.24863      0      .01139 .00439 .01494 .01484 -.00221       0       0
O21    .12219  .18450      0      .01137 .00940 .00971 .01499  .00563       0       0
O23    .16419 -.07953      0      .01107 .01253 .00486 .01582 -.00307       0       0
NaCh2       0       0      0 .086   .066   .051   .019   .128       0       0       0