data_global
_chemical_name_mineral 'Dashkovaite'
loop_
_publ_author_name
'Osaki K'
'Nakai Y'
'Watanabe T'
_journal_name_full 'Journal of the Physical Society of Japan'
_journal_volume 19 
_journal_year 1964
_journal_page_first 717
_journal_page_last 723
_publ_section_title
;
 The crystal structure of magnesium formate dihydrate and manganous formate
 dihydrate
;
_database_code_amcsd 0014166
_chemical_compound_source 'Synthetic'
_chemical_formula_sum 'Mg C2 O6 H4'
_cell_length_a 8.69
_cell_length_b 7.18
_cell_length_c 9.39
_cell_angle_alpha 90
_cell_angle_beta 97.6
_cell_angle_gamma 90
_cell_volume 580.735
_exptl_crystal_density_diffrn      1.697
_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
_atom_site_U_iso_or_equiv
Mg1   0.00000   0.00000   0.00000   0.01773
Mg2   0.50000   0.50000   0.00000   0.02090
C1   0.03500   0.23600   0.27000   0.03230
C2   0.32300   0.61300   0.43900   0.02406
O1   0.09600   0.11300   0.19600   0.02533
O2   0.08400   0.27600   0.39900   0.02660
O3   0.43000   0.72800   0.42600   0.03483
O4   0.20700   0.65000   0.50000   0.03293
Wat5   0.28000   0.47700   0.06200   0.03103
Wat6   0.41700   0.10900   0.30100   0.03483