data_global
_chemical_name_mineral 'Cranswickite'
loop_
_publ_author_name
'Peterson R C'
_journal_name_full 'American Mineralogist'
_journal_volume 96 
_journal_year 2011
_journal_page_first 869
_journal_page_last 877
_publ_section_title
;
 Cranswickite MgSO4*4H2O, a new mineral from Calingasta, Argentina
;
_database_code_amcsd 0018329
_chemical_compound_source 'Calingasta, San Juan Province, Argentina'
_chemical_formula_sum 'Mg S O8 H8'
_cell_length_a 11.9236
_cell_length_b 5.1736
_cell_length_c 12.1958
_cell_angle_alpha 90
_cell_angle_beta 117.548
_cell_angle_gamma 90
_cell_volume 667.037
_exptl_crystal_density_diffrn      1.916
_symmetry_space_group_name_H-M 'C 1 2/c 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,z'
  'x,-y,1/2+z'
  '1/2+x,1/2-y,1/2+z'
  '-x,y,1/2-z'
  '1/2-x,1/2+y,1/2-z'
  '-x,-y,-z'
  '1/2-x,1/2-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
Mg   0.00000   0.00000   0.50000   0.01507
S   0.00000   0.31310   0.75000   0.01988
O1   0.11650   0.51600   0.29250   0.02660
O2   0.98340   0.14240   0.64560   0.02913
Wat3   0.87590   0.70940   0.49760   0.01203
Wat4   0.85430   0.23470   0.37320   0.00469