Cordierite
Wallace J H, Wenk H R
American Mineralogist 65 (1980) 96-111
Structure variation in low cordierites
Note: sample sci 552
Locality: contact of Bergell granite, Switzerland
_database_code_amcsd 0000769
17.140 9.769 9.321 90 90 90 Cccm
atom       x       y      z  occ B(1,1) B(2,2) B(3,3)  B(1,2)  B(1,3)  B(2,3)
Mg1   .33733       0    .25 .588 .00028 .00127 .00211       0       0 -.00003
Fe1   .33733       0    .25 .386 .00028 .00127 .00211       0       0 -.00003
Al1      .25     .25 .25006 .978 .00044 .00142 .00143 0.00013       0       0
Si2        0      .5    .25 .880 .00026 .00126 .00109       0       0       0
Al2        0      .5    .25 .098 .00026 .00126 .00109       0       0       0
Si3   .19135 .078440      0 .983 .00029 .00102 .00140 0.00005       0       0
Si4   .13502 -.23589      0 .969 .00023 .00122 .00124 -.00009       0       0
Al5   .05032 .307490      0 .901 .00016 .00117 .00126 0.00007       0       0
Si5   .05032 .307490      0 .047 .00016 .00117 .00126 0.00007       0       0
O1    .24563 -.10374 .35836      .00074 .00191 .00206 -.00006 0.00035 -.00005
O2    .06144 -.41538 .34922      .00054 .00240 .00223 -.00015 0.00013 -.00086
O3   -.17322 -.30721 .35803      .00059 .00228 .00212 0.00019 -.00017 -.00036
O4    .04348 -.24780      0      .00036 .00383 .00446 -.00023       0       0
O5    .12130 .184190      0      .00079 .00259 .00409 0.00056       0       0
O6    .16362 -.07814      0      .00084 .00175 .00394 -.00017       0       0
OH1        0       0    .25  .60   .018   .025   .019       0       0       0
OH2        0       0      0  .12   .002   .001   .009       0       0       0