Natrolite Peacor D R American Mineralogist 58 (1973) 676-680 High temperature, single-crystal X-Ray study of natrolite T = 88 C _database_code_amcsd 0000373 18.43 18.71 6.52 90 90 90 Fdd2 atom x y z Biso Si1 0 0 0 .63 Si2 .15342 .21121 .62285 .56 Al .03748 .09357 .61517 .56 Na .2208 .0308 .6174 1.67 O1 .0228 .0680 .8652 1.30 O2 .0704 .1815 .6093 .84 O3 .0985 .0350 .5002 1.19 O4 .2065 .1529 .7262 1.23 O5 .1807 .2270 .3904 1.30 Wat .0567 .1893 .1107 2.15