data_global
_chemical_name_mineral 'Soddyite'
loop_
_publ_author_name
'Demartin F'
'Gramaccioli C M'
'Pilati T'
_journal_name_full 'Acta Crystallographica, Section C'
_journal_volume 48 
_journal_year 1992
_journal_page_first 1
_journal_page_last 4
_publ_section_title
;
 The importance of accurate crystal structure determination
 of uranium minerals. II. Soddyite (UO2)2(SiO4)*2H2O
;
_database_code_amcsd 0010268
_chemical_compound_source 'Democratic Republic of the Congo'
_chemical_formula_sum 'U2 Si O10 H4'
_cell_length_a 8.334
_cell_length_b 11.212
_cell_length_c 18.668
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 1744.353
_exptl_crystal_density_diffrn      5.089
_symmetry_space_group_name_H-M 'F d d d'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'x,1/2+y,1/2+z'
  '1/2+x,y,1/2+z'
  '1/2+x,1/2+y,z'
  '3/4+x,-y,3/4+z'
  '3/4+x,1/2-y,1/4+z'
  '1/4+x,-y,1/4+z'
  '1/4+x,1/2-y,3/4+z'
  '3/4-x,y,3/4-z'
  '3/4-x,1/2+y,1/4-z'
  '1/4-x,y,1/4-z'
  '1/4-x,1/2+y,3/4-z'
  '-x,3/4+y,3/4+z'
  '-x,1/4+y,1/4+z'
  '1/2-x,3/4+y,1/4+z'
  '1/2-x,1/4+y,3/4+z'
  'x,3/4-y,3/4-z'
  'x,1/4-y,1/4-z'
  '1/2+x,3/4-y,1/4-z'
  '1/2+x,1/4-y,3/4-z'
  '3/4+x,3/4+y,-z'
  '3/4+x,1/4+y,1/2-z'
  '1/4+x,3/4+y,1/2-z'
  '1/4+x,1/4+y,-z'
  '3/4-x,3/4-y,z'
  '3/4-x,1/4-y,1/2+z'
  '1/4-x,3/4-y,1/2+z'
  '1/4-x,1/4-y,z'
  '-x,-y,-z'
  '-x,1/2-y,1/2-z'
  '1/2-x,-y,1/2-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
U   0.37500   0.37500   0.04413   0.01031
Si   0.12500   0.12500   0.12500   0.01089
O1   0.55220   0.28620   0.04540   0.01862
O2   0.22430   0.20630   0.06770   0.01608
Ow3   0.37500   0.37500   0.17300   0.02913
H   0.30000   0.39400   0.19300   0.05066
loop_
_atom_site_aniso_label
_atom_site_aniso_U_11
_atom_site_aniso_U_22
_atom_site_aniso_U_33
_atom_site_aniso_U_12
_atom_site_aniso_U_13
_atom_site_aniso_U_23
U 0.01070 0.01000 0.01020 -0.00390 0.00000 0.00000
Si 0.01400 0.00700 0.01100 0.00000 0.00000 0.00000
O1 0.01500 0.02100 0.02000 0.00300 0.00000 0.00200
O2 0.01800 0.01500 0.01600 -0.00800 -0.00100 0.00100
Ow3 0.03000 0.03900 0.01800 -0.00900 0.00000 0.00000