Cordierite Wallace J H, Wenk H R American Mineralogist 65 (1980) 96-111 Structure variation in low cordierites Note: sample sci 624 Locality: Debris SW Cap Brasca, Bergell Alps, Switzerland _database_code_amcsd 0000766 17.088 9.726 9.335 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 .33751 0 .25 .816 .00032 .00109 .00174 0 0 0.00008 Fe1 .33751 0 .25 .130 .00032 .00109 .00174 0 0 0.00008 Al1 .25 .25 .25006 .964 .00041 .00097 .00111 0.00013 0 0 Si2 0 .5 .25 .853 .00020 .00091 .00075 0 0 0 Al2 0 .5 .25 .095 .00020 .00091 .00075 0 0 0 Si3 .19234 .077810 0 .970 .00030 .00072 .00101 0.00008 0 0 Si4 .13511 -.23714 0 .971 .00025 .00090 .00104 -.00009 0 0 Al5 .05059 .307700 0 .928 .00029 .00109 .00115 0.00006 0 0 Si5 .05059 .307700 0 .049 .00029 .00109 .00115 0.00006 0 0 O1 .24695 -.10288 .35874 .00074 .00167 .00159 -.00018 .00045 -.00027 O2 .06208 -.41554 .34870 .00049 .00215 .00179 -.00013 -.00003 -.00088 O3 -.17323 -.30982 .35824 .00059 .00200 .00185 0.00015 -.00023 -.00053 O4 .04334 -.24887 0 .00035 .00332 .00351 -.00027 0 0 O5 .12219 .184810 0 .00065 .00219 .00383 0.00058 0 0 O6 .16431 -.07930 0 .00089 .00118 .00388 -.00037 0 0 OH1 0 0 .25 .960 .220 .018 .075 0 0 0 OH2 0 0 0 .260 .015 .022 .057 0.001 0 0