data_global
_amcsd_formula_title 'H6 Mg O16 S4'
loop_
_publ_author_name
'Troyanov S'
'Merinov B'
'Verin I'
'Kemnitz E'
'Hass D'
_journal_name_full 'Kristallografiya'
_journal_volume 35 
_journal_year 1990
_journal_page_first 852
_journal_page_last 855
_publ_section_title
;
 Crystal structure of acid magnesium sulphate
 Mg:SO3(OH):2:SO2(OH)2:2
 _cod_database_code 1100085
;
_database_code_amcsd 0018260
_chemical_formula_sum 'Mg S4 O16 H6'
_cell_length_a 5.091
_cell_length_b 15.329
_cell_length_c 7.882
_cell_angle_alpha 90
_cell_angle_beta 104.19
_cell_angle_gamma 90
_cell_volume 596.343
_exptl_crystal_density_diffrn      2.309
_symmetry_space_group_name_H-M 'P 1 21/c 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'x,1/2-y,1/2+z'
  '-x,1/2+y,1/2-z'
  '-x,-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Mg1   0.00000   0.00000   0.00000
S1   0.42190   0.08450   0.76520
S2   0.12420   0.83400   0.74960
O1   0.38410   0.32200   0.22440
O2   0.29400   0.45740   0.08770
O3   0.29610   0.93960   0.19000
O4   0.71760   0.94220   0.10480
O5   0.02240   0.10820   0.16410
O6   0.27800   0.62770   0.13970
O7   0.93160   0.73040   0.13380
O8   0.69690   0.21960   0.10490
H1   0.59800   0.26400   0.12000
H2   0.84600   0.76000   0.17700
H3   0.28600   0.50600   0.06800