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: Zimbabwe, T = 900 C, t = 24h
_database_code_amcsd 0002613
17.096 9.729 9.342 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    .33748       0    .25 .875 .00678 .00577 .00613 .00845       0       0 -.00005
FeM    .33748       0    .25 .125 .00678 .00577 .00613 .00845       0       0 -.00005
AlT11     .25     .25 .25010 .992 .00599 .00705 .00535 .00557  .00109       0       0
FeT11     .25     .25 .25010 .008 .00599 .00705 .00535 .00557  .00109       0       0
SiT16       0      .5    .25      .00505 .00445 .00583 .00485       0       0       0
SiT21  .19230  .07793      0      .00452 .00485 .00374 .00496  .00013       0       0
SiT23  .13508 -.23728      0      .00458 .00412 .00452 .00511 -.00066       0       0
AlT26  .05070  .30776      0      .00480 .00415 .00506 .00520  .00055       0       0
O11    .24692 -.10287 .35864      .00804 .01004 .00697 .00712 -.00056  .00295 -.00089
O16    .06223 -.41597 .34892      .00770 .00654 .00914 .00742 -.00100  .00020 -.00321
O13   -.17333 -.30993 .35840      .00806 .00815 .00864 .00738  .00122 -.00198 -.00233
O26    .04327 -.24890      0      .01181 .00482 .01511 .01550 -.00210       0       0
O21    .12214  .18465      0      .01157 .00947 .00961 .01564  .00524       0       0
O23    .16414 -.07939      0      .01133 .01299 .00505 .01596 -.00297       0       0
NaCh2       0       0      0 .074   .083   .058   .019   .171    .002       0       0