Omongwaite Freyer D, Reck G, Bremer M, Voigt W Monatshefte fur Chemie 130 (1999) 1179-1193 Thermal behaviour and crystal structure of sodium-containing hemihydrates of calcium sulfate Note: subcell Locality: synthetic _database_code_amcsd 0014668 12.0890 6.903 6.3537 90 90.089 90 C2 atom x y z occ Uiso Ca(1) .2685 .1884 .6671 .033 Ca(2) 0 -.0066 0 .572 .021 Na(2) 0 -.0066 0 .428 .021 S(1) 0 .0040 .5 .019 S(2) .2726 .1842 .1690 .017 O(1) .0710 .1244 .6354 .037 O(2) .1782 .1464 .0203 .043 O(3) .3691 .2302 .0422 .041 O(4) .2453 .3417 .3020 .042 O(5) .2988 .0143 .2934 .034 O(6) .0655 -.1235 .3584 .034 Wat .0430 .5030 .3120 .71 .119 Na(3) 0 .3880 0 .428 .100