Dwornikite Talla D, Balla M, Aicher C, Lengauer C L, Wildner M American Mineralogist 105 (2020) 1472-1489 Structural and spectroscopic study of the kieserite-dwornikite solid-solution series, (Mg,Ni)SO4*H2O, at ambient and low temperatures, with cosmochemical implications for icy moons and Mars Locality: synthetic _database_code_amcsd 0020993 6.8586 7.6202 7.5448 90 117.842 90 C2/c atom x y z occ Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) Ni 0 .5 0 .5248 .00822 .00686 .00859 .00841 -.00026 .00288 .00028 Mg 0 .5 0 .4752 .00822 .00686 .00859 .00841 -.00026 .00288 .00028 S 0 .15612 .25 .00777 .00557 .00763 .00916 0 .00264 0 O1 .17421 .04590 .39953 .01420 .0082 .0160 .0164 .00372 .00416 .0068 O2 .09821 .26909 .15246 .01266 .0118 .0117 .0164 .00137 .0082 .00434 O3 0 .63291 .25 .01100 .0098 .0123 .0108 0 .0047 0 H .111 .700 .294 .033