Cordierite
Wallace J H, Wenk H R
American Mineralogist 65 (1980) 96-111
Structure variation in low cordierites
Note: sample sci 1542 filter
Locality: Passo di Mello, Bergell Alps, Switzerland
_database_code_amcsd 0000764
17.044 9.716 9.334 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   .33739       0    .25 .886 .00037 .00120 .00175       0       0 -.00005
Fe1   .33739       0    .25 .068 .00037 .00120 .00175       0       0 -.00005
Al1   .25008     .25 .25010 .954 .00042 .00093 .00100 0.00016       0       0
Si2        0      .5    .25 .864 .00031 .00098 .00079       0       0       0
Al2        0      .5    .25 .096 .00031 .00098 .00079       0       0       0
Si3   .19252  .07796      0 .960 .00031 .00076 .00093 0.00001       0       0
Si4   .13517 -.23732      0 .958 .00033 .00083 .00098 -.00007       0       0
Al5   .05077  .30786      0 .913 .00033 .00099 .00106 0.00006       0       0
Si5   .05077  .30786      0 .048 .00033 .00099 .00106 0.00006       0       0
O1    .24723 -.10292 .35868      .00088 .00154 .00172 -.00011 0.00030 -.00026
O2    .06229 -.41627 .34908      .00059 .00221 .00185 -.00010 0.00011 -.00057
O3   -.17321 -.31005 .35851      .00076 .00193 .00185 0.00012 -.00030 -.00047
O4    .04305 -.24824      0      .00053 .00334 .00339 -.00015       0       0
O5    .12213  .18479      0      .00069 .00237 .00378 0.00063       0       0
O6    .16474 -.07956      0      .00102 .00127 .00387 -.00026       0       0
OH1        0       0    .25 .770  0.050  0.028  0.012       0       0       0
OH2        0       0      0 .080  -.001  -.004  0.320 0.00230       0       0