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