Boltwoodite Burns P C The Canadian Mineralogist 36 (1998) 1069-1075 The structure of boltwoodite and implications of solid solution toward sodium boltwoodite _database_code_amcsd 0005562 7.0772 7.0597 6.6479 90 104.982 90 P2_1/m atom x y z occ Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) U .52463 .75 .63810 .0247 .0071 .0110 0 .0058 0 Si .4320 .75 .1481 .0296 .0122 .0122 0 .0064 0 K .046 .037 .641 .28 .0431 Na 0 0 .5 .21 .0626 O1 .786 .75 .668 .0244 .0327 .0275 0 .0086 0 O2 .263 .75 .597 .0195 .0377 .0255 0 .0062 0 O3 .566 .75 .988 .0324 .0155 .0183 0 .0102 0 O4 .5246 .0740 .6888 .0630 .0064 .0153 .0018 .0108 -.0006 OH5 .203 .75 .030 .0366 .0536 .0364 0 .0177 0 Wat6 .921 .925 .201 .53 .0639 Wat7 .938 .75 .245 .21 .1110