data_global
_chemical_name_mineral 'Uranophane - alpha'
loop_
_publ_author_name
'Ginderow D'
_journal_name_full 'Acta Crystallographica, Section C'
_journal_volume 44 
_journal_year 1988
_journal_page_first 421
_journal_page_last 424
_publ_section_title
;
 Structure de l'uranophane alpha, Ca(UO2)2(SiO3OH)2*5H2O
;
_database_code_amcsd 0010068
_chemical_compound_source 'Bois Noirs du Puy-de-Dome, France'
_chemical_formula_sum 'Ca U2 Si2 O17 H12'
_cell_length_a 15.909
_cell_length_b 7.002
_cell_length_c 6.665
_cell_angle_alpha 90
_cell_angle_beta 97.27
_cell_angle_gamma 90
_cell_volume 736.478
_exptl_crystal_density_diffrn      3.862
_symmetry_space_group_name_H-M 'P 1 21 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '-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
Ca   0.76820   0.68370   0.27670   0.01646
U1   0.00568   0.78217   0.13400   0.00735
U2  -0.50568  -0.78220  -0.13400   0.00735
Si1   0.03290   0.27960   0.34050   0.01013
Si2  -0.53290  -0.27960  -0.34050   0.01013
O1   0.11930   0.80040   0.13930   0.01900
O2  -0.61930  -0.80040  -0.13930   0.01900
O3  -0.10760   0.76120   0.12400   0.01773
O4  -0.39240  -0.76120  -0.12400   0.01773
O5   0.01980   0.45920   0.18730   0.01393
O6  -0.51980  -0.45920  -0.18730   0.01393
O7   0.00480   0.10640   0.18370   0.01520
O8  -0.50480  -0.10640  -0.18370   0.01520
O9  -0.02130   0.28650   0.52710   0.01520
O10  -0.47870  -0.28650  -0.52710   0.01520
O11   0.13380   0.26910   0.42740   0.02280
O12  -0.63380  -0.26910  -0.42740   0.02280
Ow1   0.81900   0.37230   0.36340   0.03926
Ow2   0.74380   0.01450   0.20520   0.04306
Ow3   0.68690   0.63290   0.54930   0.04306
Ow4   0.74310   0.51800   0.95170   0.02786
Ow5   0.76150   0.02990   0.76530   0.14312
H1   0.17300   0.34400   0.39100   0.05066
H2   0.65600   0.34300   0.43700   0.05066
H11   0.87500   0.31600   0.38300   0.05066
H12   0.77000   0.31600   0.30300   0.05066
H21   0.26600   0.47700   0.96900   0.05066
H22   0.68000   0.08600   0.24200   0.05066
H31   0.36700   0.18400   0.44500   0.05066
H32   0.29300   0.09300   0.31200   0.05066
H41   0.79700   0.46800   0.89100   0.05066
H42   0.69400   0.43000   0.94300   0.05066
H51   0.81600   0.10900   0.82000   0.05066
H52   0.71100   0.11700   0.69500   0.05066