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: Great Bear Lake, T = 900 C, t = 24 h
_database_code_amcsd 0002616
17.132 9.744 9.330 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    .33757       0    .25 .725 .00649 .00515 .00551 .00881       0       0 -.00006
FeM    .33757       0    .25 .275 .00649 .00515 .00551 .00881       0       0 -.00006
AlT11     .25     .25 .25004 .988 .00593 .00693 .00521 .00566  .00117       0       0
FeT11     .25     .25 .25004 .012 .00593 .00693 .00521 .00566  .00117       0       0
SiT16       0      .5    .25 .993 .00510 .00474 .00554 .00501       0       0       0
FeT16       0      .5    .25 .007 .00510 .00474 .00554 .00501       0       0       0
SiT21  .19183  .07819      0      .00423 .00443 .00322 .00504  .00031       0       0
SiT23  .13504 -.23677      0      .00446 .00403 .00415 .00521 -.00069       0       0
AlT26  .05045  .30737      0      .00460 .00392 .00449 .00540  .00048       0       0
O11    .24639 -.10313 .35861      .00783 .00972 .00645 .00731 -.00039  .00326 -.00093
O16    .06192 -.41565 .34876      .00779 .00646 .00872 .00818 -.00131  .00060 -.00348
O13   -.17331 -.30913 .35824      .00780 .00758 .00855 .00725  .00154 -.00208 -.00238
O26    .04336 -.24898      0      .01162 .00402 .01466 .01619 -.00202       0       0
O21    .12195  .18469      0      .01120 .00861 .00958 .01542  .00524       0       0
O23    .16388 -.07901      0      .01115 .01249 .00477 .01618 -.00287       0       0
NaCh2       0       0      0 .021   .011