H12 Mg O12 S2 Black W, Griffith E, Robertson B Acta Crystallographica B31 (1975) 615-617 M S2 O6 (H2 O)6 (M = Mg, Ni, Zn) _cod_database_code 1100069 _database_code_amcsd 0018246 6.819 6.747 6.506 94.23 96.76 101.72 P-1 atom x y z Mg1 0 0 0 S1 .3597 .5450 .5014 O1 .1285 .2919 -.0435 O2 -.0702 .0970 .2832 O3 .2739 -.0365 .1429 O4 .2263 .3693 .5610 O5 .4029 .7213 .6537 O6 .3055 .5888 .2903 H1 .174 .372 .040 H2 .167 .320 -.141 H3 -.159 .138 .29 H4 .005 .149 .358 H5 .293 -.121 .181 H6 .353 .048 .19