Sodalite Peterson R C The Canadian Mineralogist 21 (1983) 549-552 The structure of hackmanite, a variety of sodalite, from Mont St-Hilaire, Quebec Locality: Mont St-Hilaire, Quebec, Canada _database_code_amcsd 0005193 8.877 8.877 8.877 90 90 90 P-43n atom x y z occ Biso B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3) Na .1778 .1778 .1778 .94 .0045 .0045 .0045 .0002 .0002 .0002 Fe .1778 .1778 .1778 .01 .0045 .0045 .0045 .0002 .0002 .0002 Al .25 .5 0 .0016 .0016 .0016 0 0 0 Si .25 0 .5 .0013 .0016 .0016 0 0 0 O .1390 .4382 .1498 .0025 .0029 .0031 .0003 .0013 -.0002 Cl 0 0 0 1.89