data_global
_chemical_name_mineral 'Leonite'
loop_
_publ_author_name
'Hertweck B'
'Giester G'
'Libowitzky E'
_journal_name_full 'American Mineralogist'
_journal_volume 86 
_journal_year 2001
_journal_page_first 1282
_journal_page_last 1292
_publ_section_title
;
 The crystal structures of the low-temperature phases of leonite-type compounds,
 K2Me(SO4)2.4H2O (Me=Mg,Mn,Fe)
 Sample: K2Mn(SO4)2.4H2O, T = 185 K
;
_database_code_amcsd 0002731
_chemical_formula_sum 'K2 Mn S2 O12 H8'
_cell_length_a 12.035
_cell_length_b 9.549
_cell_length_c 19.839
_cell_angle_alpha 90
_cell_angle_beta 94.99
_cell_angle_gamma 90
_cell_volume 2271.301
_exptl_crystal_density_diffrn      2.324
_symmetry_space_group_name_H-M 'I 1 2/a 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,1/2+z'
  '-x,y,-z'
  '1/2-x,1/2+y,1/2-z'
  '1/2+x,1/2-y,z'
  '+x,-y,1/2+z'
  '1/2-x,1/2-y,-z'
  '-x,-y,1/2-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
K1  -0.16978   0.26685  -0.12080   0.01570
K2   0.17013   0.25936   0.12839   0.01520
Mn1   0.00000  -0.00086   0.00000   0.00890
Mn2   0.00000   0.50000   0.25000   0.00860
S1   0.20701   0.49730  -0.02242   0.00880
S2   0.21207   0.00710  -0.24013   0.00870
O1A  -0.15790  -0.37470  -0.05551   0.01670
O1B   0.15910  -0.37180  -0.05816   0.01660
O2A   0.15050  -0.09260  -0.20093   0.02110
O2B   0.17690   0.15140  -0.22669   0.02300
O3   0.17260  -0.00080   0.03002   0.02400
O4   0.18410   0.49340   0.04827   0.02070
O5   0.16760   0.49430   0.21728   0.01330
O6   0.19310   0.01990   0.18716   0.02030
Ow1A   0.03700   0.33470  -0.17515   0.01390
Ow1B   0.04070  -0.33300  -0.17715   0.01370
Ow2A   0.00000   0.22710   0.00000   0.01950
Ow2B   0.00000  -0.22760   0.00000   0.02510
Ow3   0.00980  -0.00210  -0.10993   0.02080
H1A   0.07400   0.27700  -0.19200   0.03100
H2A   0.07600   0.35200  -0.13700   0.03000
H1B   0.07100  -0.27100  -0.19200   0.03000
H2B   0.08200  -0.34900   0.13800   0.02900
H3A   0.04300   0.27600  -0.01600   0.04000
H3B   0.04300  -0.27800  -0.01500   0.04100
H4   0.05600  -0.01300  -0.13400   0.03500
H5  -0.04600   0.00600  -0.13600   0.04200