data_global
_chemical_name_mineral 'Vanmeersscheite'
loop_
_publ_author_name
'Piret P'
'Deliens M'
_journal_name_full 'Bulletin de Mineralogie'
_journal_volume 105 
_journal_year 1982
_journal_page_first 125
_journal_page_last 128
_publ_section_title
;
 La vanmeerscheite U(UO2)3(PO4)2(OH)6*4(H2O) et la
 meta-vanmeerscheite U(UO2)3(PO4)2(OH)6*2(H2O), nouveaux mineraux
;
_database_code_amcsd 0012077
_chemical_compound_source 'Kobokobo pegmatite, Kivu, Zaire'
_chemical_formula_sum 'U2 P O10 H2'
_cell_length_a 17.06
_cell_length_b 16.760
_cell_length_c 7.023
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 2008.055
_exptl_crystal_density_diffrn      4.426
_symmetry_space_group_name_H-M 'P 21 m n'
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'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
U1   0.00000   0.21550   0.25660   0.00190
U2   0.11540   0.20650   0.74530   0.00070
U3  -0.10710   0.22620   0.75990   0.00070
U4   0.25200   0.00000   0.18690   0.00270
U5  -0.24150   0.00000   0.16380   0.00270
P6  -0.19800   0.19300   0.27100 ?
P7   0.18700   0.20600   0.24300 ?
O8  -0.01300   0.32400   0.19700 ?
O9  -0.01700   0.10200   0.27700 ?
O10   0.13900   0.10400   0.70000 ?
O11   0.07900   0.31700   0.77300 ?
O12  -0.10600   0.33000   0.79400 ?
O13  -0.10600   0.11000   0.80000 ?
O14   0.00100   0.19800  -0.07000 ?
O15  -0.12800   0.20900   0.08900   0.01000
O16  -0.12000   0.22700   0.42900   0.01000
O17   0.00000   0.18400   0.58600 ?
O18   0.11700   0.23200   0.41900   0.01000
O19   0.12000   0.19200   0.07500   0.01000
O20  -0.26600   0.26400   0.27300 ?
O21   0.24700   0.29200   0.23300 ?
O22  -0.21600   0.09700   0.30100 ?
O23   0.23300   0.11700   0.30600 ?
O-H24   0.19000   0.00000   0.44900   0.08400
O-H25   0.31400   0.00000  -0.06100   0.08400
O-H26   0.14500   0.00000   0.04800   0.08400
O-H27   0.35600   0.00000   0.34300   0.08400
O-H28  -0.34800   0.00000   0.31200   0.08400
O-H29  -0.18300   0.00000   0.42900   0.08400
O-H30  -0.30100   0.00000  -0.09100   0.08400
O-H31  -0.13500   0.00000   0.03100   0.08400