data_global
_chemical_name_mineral 'Watkinsonite'
loop_
_publ_author_name
'Topa D'
'Makovicky E'
'Sejkora J'
'Dittrich H'
_journal_name_full 'The Canadian Mineralogist'
_journal_volume 48 
_journal_year 2010
_journal_page_first 1109
_journal_page_last 1118
_publ_section_title
;
 The crystal structure of watkinsonite, Cu2PbBi4Se8,
 from the Zalesi uranium deposit, Czech Republic
;
_database_code_amcsd 0017825
_chemical_compound_source 'Zalesi uranium deposit, Czech Republic'
_chemical_formula_sum 'Cu1.68 Ag.32 Pb Bi4 Se8'
_cell_length_a 12.952
_cell_length_b 4.1523
_cell_length_c 15.155
_cell_angle_alpha 90
_cell_angle_beta 108.931
_cell_angle_gamma 90
_cell_volume 770.959
_exptl_crystal_density_diffrn      7.823
_symmetry_space_group_name_H-M 'P 1 21/m 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'x,1/2-y,z'
  '-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_occupancy
_atom_site_U_iso_or_equiv
Cu1   0.37880   0.25000   0.90090   0.68000   0.08800
Ag1   0.38600   0.25000   0.90060   0.32000   0.07900
Cu2   0.47134   0.25000   0.53715   1.00000   0.02580
Pb   0.23691   0.25000   0.33139   1.00000   0.02880
Bi1   0.04295   0.25000   0.88759   1.00000   0.01670
Bi2   0.56525   0.25000   0.29021   1.00000   0.01610
Bi3   0.70545   0.25000   0.90960   1.00000   0.01730
Bi4   0.92454   0.25000   0.37818   1.00000   0.02130
Se1   0.12568   0.25000   0.50967   1.00000   0.01410
Se2   0.13530   0.25000   0.11562   1.00000   0.01520
Se3   0.30144   0.25000   0.73696   1.00000   0.01890
Se4   0.43836   0.25000   0.06837   1.00000   0.01850
Se5   0.61451   0.25000   0.70857   1.00000   0.01610
Se6   0.63573   0.25000   0.48096   1.00000   0.01510
Se7   0.80926   0.25000   0.11716   1.00000   0.01550
Se8   0.95263   0.25000   0.69674   1.00000   0.01360
loop_
_atom_site_aniso_label
_atom_site_aniso_U_11
_atom_site_aniso_U_22
_atom_site_aniso_U_33
_atom_site_aniso_U_12
_atom_site_aniso_U_13
_atom_site_aniso_U_23
Cu1 0.06000 0.18400 0.02500 0.00000 0.02100 0.00000
Ag1 0.10900 0.09700 0.00700 0.00000 -0.01200 0.00000
Cu2 0.03000 0.01200 0.03700 0.00000 0.01400 0.00000
Pb 0.02550 0.01740 0.04380 0.00000 0.01170 0.00000
Bi1 0.01760 0.01260 0.01890 0.00000 0.00430 0.00000
Bi2 0.01520 0.01280 0.01930 0.00000 0.00420 0.00000
Bi3 0.01550 0.01200 0.02240 0.00000 0.00340 0.00000
Bi4 0.01870 0.01670 0.02570 0.00000 0.00310 0.00000
Se1 0.01260 0.01300 0.01600 0.00000 0.00400 0.00000
Se2 0.01270 0.01400 0.01700 0.00000 0.00300 0.00000
Se3 0.01370 0.01300 0.03000 0.00000 0.00700 0.00000
Se4 0.01730 0.01400 0.02600 0.00000 0.00900 0.00000
Se5 0.01500 0.01200 0.02100 0.00000 0.00600 0.00000
Se6 0.01350 0.01200 0.01800 0.00000 0.00200 0.00000
Se7 0.01320 0.01300 0.02000 0.00000 0.00400 0.00000
Se8 0.01360 0.01100 0.01500 0.00000 0.00300 0.00000