data_global
_chemical_name_mineral 'Parauranophane'
loop_
_publ_author_name
'Barinova A V'
'Rastsvetaeva R K'
'Sidorenko G A'
'Verin I A'
_journal_name_full 'Crystallography Reports'
_journal_volume 48 
_journal_year 2003
_journal_page_first 12
_journal_page_last 15
_publ_section_title
;
 Crystal structure of beta-uranophane from the Transbaikal region
 and its relation to the structure of the a modification
;
_database_code_amcsd 0018695
_chemical_compound_source 'Streltsovkii ore field, Transbaikal region, Russia'
_chemical_formula_sum 'Ca U2 Si2 O17 H12'
_cell_length_a 13.947
_cell_length_b 15.465
_cell_length_c 6.626
_cell_angle_alpha 90
_cell_angle_beta 91.300
_cell_angle_gamma 90
_cell_volume 1428.796
_exptl_crystal_density_diffrn      3.981
_symmetry_space_group_name_H-M 'P 1 21/a 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2-y,z'
  '1/2-x,1/2+y,-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
Ca   0.19020   0.48560   0.28260   0.01646
U(1)   0.01920   0.26010   0.26270   0.01381
U(2)   0.23150   0.73950   0.47080   0.01216
Si(1)   0.01870   0.22300   0.72970   0.00925
Si(2)   0.26700   0.19450   0.06360   0.00709
O(1)   0.26520   0.35230   0.49270   0.01267
O(2)   0.99200   0.14910   0.23470   0.02052
O(3)   0.73210   0.87410   0.44010   0.01140
O(4)   0.04410   0.37240   0.28930   0.02153
O(5)   0.17940   0.22340   0.21140   0.01241
O(6)   0.89230   0.76390   0.41970   0.01735
O(7)   0.35790   0.20450   0.22000   0.01558
O(8)   0.56840   0.74920   0.42600   0.01646
O(9)   0.97950   0.71890   0.07180   0.01418
O(10)   0.72710   0.74680   0.13430   0.01254
O-H(1)   0.98570   0.88070   0.20990   0.02153
O-H(2)   0.74140   0.90740   0.00160   0.02406
Wat(1)   0.54260   0.94590   0.16560   0.02913
Wat(2)   0.36090   0.49060   0.32960   0.03926
Wat(3)   0.80440   0.59270   0.02550   0.03166
Wat(4)   0.87700   0.49920   0.37700   0.02786
Wat(5)   0.13030   0.00640   0.23710   0.04433