data_global
_chemical_name_mineral 'Uranophane - beta'
loop_
_publ_author_name
'Viswanathan K'
'Harneit O'
_journal_name_full 'American Mineralogist'
_journal_volume 71 
_journal_year 1986
_journal_page_first 1489
_journal_page_last 1493
_publ_section_title
;
 Refined crystal structure of beta-uranophane, Ca(UO2)2(SiO3OH)2.5H2O
;
_database_code_amcsd 0001061
_chemical_compound_source 'Roessing, South-West Africa'
_chemical_formula_sum 'Ca U2 Si2 O17 H2'
_cell_length_a 13.966
_cell_length_b 15.443
_cell_length_c 6.632
_cell_angle_alpha 90
_cell_angle_beta 91.38
_cell_angle_gamma 90
_cell_volume 1429.955
_exptl_crystal_density_diffrn      3.931
_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   0.18990   0.48480   0.28210   0.01900
U1   0.01940   0.26000   0.26310   0.00800
U2   0.23130   0.73970   0.47070   0.00700
Si1   0.01810   0.22240   0.72930   0.01400
Si2   0.26670   0.19440   0.06380   0.01500
O1   0.25800   0.35400   0.47900   0.02500
O2   0.98900   0.14600   0.23100   0.02000
O3   0.72700   0.87700   0.42900   0.01900
O4   0.05100   0.37300   0.30000   0.01600
O5   0.18200   0.22000   0.20800   0.01600
O6   0.88900   0.76500   0.40900   0.02500
O7   0.35800   0.20000   0.22300   0.01100
O8   0.56700   0.74700   0.42000   0.03000
O9   0.97700   0.71600   0.07500   0.01800
O10   0.72500   0.74400   0.13800   0.02000
O-H1   0.98200   0.88000   0.21100   0.02700
O-H2   0.74500   0.90700   0.00400   0.02100
OW1   0.54400   0.94900   0.16700   0.02700
OW2   0.36000   0.49100   0.32500   0.03400
OW3   0.80400   0.59100   0.03200   0.04300
OW4   0.87500   0.50200   0.37000   0.02900
OW5   0.13100   0.00500   0.23100   0.05300