data_global
_chemical_name_mineral 'Novacekite'
loop_
_publ_author_name
'Locock A J'
'Burns P C'
'Flynn M'
_journal_name_full 'The Canadian Mineralogist'
_journal_volume 42 
_journal_year 2004
_journal_page_first 1699
_journal_page_last 1718
_publ_section_title
;
 Divalent transition metals and magnesium in structures
 that contain the autunite-type sheet
 Sample: MgUAs10
;
_database_code_amcsd 0005990
_chemical_compound_source 'Synthetic'
_chemical_formula_sum 'Mg U2 As2 O22 H20'
_cell_length_a 7.1328
_cell_length_b 20.085
_cell_length_c 7.1569
_cell_angle_alpha 90
_cell_angle_beta 90.585
_cell_angle_gamma 90
_cell_volume 1025.260
_exptl_crystal_density_diffrn      3.312
_symmetry_space_group_name_H-M 'P 1 21/n 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2-y,1/2+z'
  '1/2-x,1/2+y,1/2-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
Mg  -0.50000   0.50000   0.00000   0.03300
U   0.05920   0.20440   0.02270   0.01500
As  -0.43950   0.25110   0.02630   0.01600
O1  -0.25850   0.20000  -0.02140   0.01800
O2   0.05610   0.29220   0.01680   0.02600
O3  -0.48440   0.30080  -0.15840   0.02000
O4  -0.62800   0.20200   0.07800   0.03400
O5  -0.39400   0.30400   0.20650   0.02100
O6   0.06140   0.11610   0.02610   0.01500
Wat1  -0.33200   0.57980   0.07000   0.03500
Wat2  -0.41000   0.50390  -0.27000   0.04100
Wat3  -0.72180   0.56770  -0.07200   0.04000
Wat4  -0.52400   0.08160   0.26700   0.04500
Wat5  -0.41900   0.07390  -0.15700   0.09900