Nepheline Antao S M, Hassan I The Canadian Mineralogist 48 (2010) 69-80 Nepheline: structure of three samples from the Bancroft area, Ontario, obtained using synchrotron high-resolution powder x-ray diffraction Locality: Nephton, Bancroft area, Ontario, Canada Sample: 2 _database_code_amcsd 0006319 10.00215 10.00215 8.38742 90 90 120 P6_3 atom x y z occ Uiso K1 0 0 .9950 .920 .0202 Na1 .44424 .99778 .0019 .02620 Al1 2/3 1/3 .1875 .0100 Al2 .3332 .0938 .6842 .00938 Si1 2/3 1/3 .7984 .0100 Si2 .3337 .0927 .3104 .00938 O1 .7073 .3371 .9874 1/3 .028 O2 .3159 .0261 .4995 .0245 O3 .5236 .1759 .7223 .0313 O4 .5112 .1627 .2390 .0225 O5 .2861 .2235 .3140 .0136 O6 .2651 .2235 .6938 .0159