data_global
_chemical_name_mineral 'Zippeite'
loop_
_publ_author_name
'Burns P C'
'Deely K M'
'Hayden L A'
_journal_name_full 'The Canadian Mineralogist'
_journal_volume 41 
_journal_year 2003
_journal_page_first 687
_journal_page_last 706
_publ_section_title
;
 The crystal chemistry of the zippeite group
;
_database_code_amcsd 0005847
_chemical_formula_sum 'U4 S2 K2.71 O23 H7'
_cell_length_a 8.7524
_cell_length_b 13.9197
_cell_length_c 17.6972
_cell_angle_alpha 90
_cell_angle_beta 104.178
_cell_angle_gamma 90
_cell_volume 2090.389
_exptl_crystal_density_diffrn      4.757
_symmetry_space_group_name_H-M 'C 1 2 1'
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_occupancy
_atom_site_U_iso_or_equiv
U(1)   0.92140   0.29480   0.08650   1.00000   0.02000
U(2)   0.58740   0.32610  -0.08710   1.00000   0.01800
U(3)  -0.07820   0.33450  -0.41320   1.00000   0.01300
U(4)  -0.41200   0.30280  -0.58680   1.00000   0.01400
S(1)   0.24940   0.30990  -0.24880   1.00000   0.02000
S(2)  -0.75000   0.32300  -0.74910   1.00000   0.01600
K(1)   0.30910   0.56030  -0.08300   0.39000   0.06300
K(1A)   0.29570   0.55830  -0.13660   0.52000   0.03500
K(2)   0.19850   0.56890  -0.36730   0.70000   0.04900
K(2A)   0.18520   0.56860  -0.42740   0.30000   0.02800
K(3)   0.67810   0.05860   0.12700   0.33000   0.02900
K(3A)   0.61380   0.06280   0.04420   0.47000   0.10600
O(1)  -0.82160   0.38180  -0.70070   1.00000   0.02200
O(2)  -0.67490   0.38190  -0.79810   1.00000   0.02000
O(3)   0.36620   0.37420  -0.19560   1.00000   0.02100
O(4)   0.13820   0.37810  -0.29900   1.00000   0.01800
O(5)  -0.86840   0.26350  -0.79740   1.00000   0.02100
O(6)   0.32050   0.24530  -0.29950   1.00000   0.02300
O(7)   0.17420   0.24060  -0.20210   1.00000   0.02100
O(8)   0.84980   0.30660  -0.04440   1.00000   0.01400
O(9)  -0.62820   0.26520  -0.69780   1.00000   0.02100
O(10)   0.91570   0.41900   0.11070   1.00000   0.02900
O(11)  -0.14420   0.29580  -0.54410   1.00000   0.01600
O(12)   0.58190   0.45330  -0.06550   1.00000   0.02300
O(13)  -0.35340   0.31990  -0.45590   1.00000   0.01200
O(14)   0.58400   0.20160  -0.11500   1.00000   0.03100
O(15)  -0.08180   0.21040  -0.38920   1.00000   0.02400
O(16)  -0.41710   0.42530  -0.61710   1.00000   0.03000
O(17)   0.91520   0.17070   0.06760   1.00000   0.03000
O-H(18)   0.64470   0.27300   0.04690   1.00000   0.02100
O(19)  -0.40730   0.18310  -0.56100   1.00000   0.02500
O(20)  -0.06420   0.46140  -0.42870   1.00000   0.02200
Wat(21)  -0.15150   0.06040  -0.59400   1.00000   0.06100
Wat(22)   0.52170   0.56110  -0.25000   1.00000   0.09000
Wat(23)   0.02460   0.56190  -0.25490   1.00000   0.04900