H2 Mg O8 S2 Simonov M, Troyanov S, Kemnitz E, Haas D, Kammler M Kristallografiya 31 (1986) 1220-1221 Crystal structure of Mg (H S O4)2 _cod_database_code 1100084 _database_code_amcsd 0018259 7.299 8.273 4.940 90 99.90 90 P2_1/n atom x y z Mg1 0 0 0 S1 .23456 .17272 .56458 O1 .2045 .8401 .9251 O2 .0809 .1509 .7114 O3 .0934 .5808 .7787 O4 .1974 .1098 .2885 H1 .110 .5 .753