data_global
_chemical_name_mineral 'Leonardsenite'
loop_
_publ_author_name
'Weil M'
'Werner F'
_journal_name_full 'Monatshefte fur Chemie'
_journal_volume 132 
_journal_year 2001
_journal_page_first 769
_journal_page_last 777
_publ_section_title
;
 The thermal dehydration of magnesium aluminum pentafluoride dihydrate:
 crystal structures of MgAlF5(H2O)2 and MgAlF5
;
_database_code_amcsd 0020046
_chemical_compound_source 'Synthetic'
_chemical_formula_sum 'Mg Al F5 O2 H4'
_cell_length_a 7.0637
_cell_length_b 10.1308
_cell_length_c 6.7745
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 484.790
_exptl_crystal_density_diffrn      2.498
_symmetry_space_group_name_H-M 'I m m a'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,1/2+z'
  'x,1/2-y,z'
  '1/2+x,-y,1/2+z'
  '-x,1/2+y,-z'
  '1/2-x,+y,1/2-z'
  '-x,y,z'
  '1/2-x,1/2+y,1/2+z'
  'x,-y,-z'
  '1/2+x,1/2-y,1/2-z'
  'x,1/2+y,-z'
  '1/2+x,+y,1/2-z'
  '-x,1/2-y,z'
  '1/2-x,-y,1/2+z'
  '-x,-y,-z'
  '1/2-x,1/2-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
Mg   0.00000   0.00000   0.00000   0.01330
Al   0.25000   0.25000   0.25000   0.00980
F1   0.20234   0.12510   0.07030   0.01730
F2   0.00000   0.25000   0.32560   0.01480
O   0.00000   0.58391   0.28150   0.02810
H  -0.09400   0.60300   0.35700   0.09000