data_global
_chemical_name_mineral 'Volborthite'
loop_
_publ_author_name
'Kashaev A A'
'Bakakin V V'
_journal_name_full 'Doklady Akademii Nauk SSSR'
_journal_volume 181 
_journal_year 1968
_journal_page_first 967
_journal_page_last 969
_publ_section_title
;
 Crystal structure of volborthite Cu3(OH)2V2O7*2H2O
;
_database_code_amcsd 0018666
_chemical_formula_sum 'Cu3 V2 O11 H6'
_cell_length_a 10.60
_cell_length_b 5.86
_cell_length_c 7.21
_cell_angle_alpha 90
_cell_angle_beta 95.08
_cell_angle_gamma 90
_cell_volume 446.097
_exptl_crystal_density_diffrn      3.533
_symmetry_space_group_name_H-M 'C 1 2/m 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,z'
  'x,-y,z'
  '1/2+x,1/2-y,z'
  '-x,y,-z'
  '1/2-x,1/2+y,-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
Cu1   0.00000   0.00000   0.00000   0.01773
Cu2   0.25000   0.25000   0.00000   0.01773
V   0.49600   0.00000   0.25600   0.01773
O1   0.00000   0.50000   0.50000   0.01773
O2   0.08100   0.25000   0.17800   0.01773
O3   0.34500   0.00000   0.14900   0.01773
O-H   0.15400   0.00000   0.84800   0.01773
Wat   0.16000   0.00000   0.45000   0.01773