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: 94755, Tincup mining district, Wyoming, T = 900 C, t = 24 h
_database_code_amcsd 0002617
17.138 9.751 9.328 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    .33744       0    .25 .771 .00715 .00625 .00679 .00841       0       0 -.00009
FeM    .33744       0    .25 .289 .00715 .00625 .00679 .00841       0       0 -.00009
AlT11     .25     .25 .25005 .995 .00635 .00786 .00628 .00490  .00114       0       0
FeT11     .25     .25 .25005 .005 .00635 .00786 .00628 .00490  .00114       0       0
SiT16       0      .5    .25      .00564 .00577 .00657 .00457       0       0       0
SiT21  .19161  .07831      0      .00500 .00566 .00460 .00475  .00019       0       0
SiT23  .13501 -.23658      0      .00502 .00486 .00543 .00478 -.00056       0       0
AlT26  .05037  .30762      0      .00522 .00482 .00606 .00480  .00071       0       0
O11    .24616 -.10329 .35854      .00859 .01134 .00811 .00633 -.00059  .00313 -.00083
O16    .06194 -.41571 .34891      .00862 .00815 .01047 .00725 -.00150  .00079 -.00322
O13   -.17335 -.30888 .35817      .00872 .00940 .00972 .00702  .00136 -.00228 -.00231
O26    .04342 -.24893      0      .01254 .00600 .01612 .01551 -.00234       0       0
O21    .12162  .18469      0      .01254 .01122 .01063 .01578  .00557       0       0
O23    .16365 -.07891      0      .01218 .01390 .00634 .01630 -.00294       0       0
NaCh2       0       0      0 .066   .090   .041   .016   .212    .007       0       0