data_global
_chemical_name_mineral 'Bairdite'
loop_
_publ_author_name
'Kampf A R'
'Mills S J'
'Housley R M'
'Rossman G R'
'Marty J'
'Thorne B'
_journal_name_full 'American Mineralogist'
_journal_volume 98 
_journal_year 2013
_journal_page_first 1315
_journal_page_last 1321
_publ_section_title
;
 Lead-tellurium oxysalts from Otto Mountain near Baker, California:
 X. Bairdite, Pb2Cu2+4Te6+2O10(OH)2(SO4)(H2O), a new mineral with thick HCP layers
;
_database_code_amcsd 0019857
_chemical_compound_source 'Otto Mountain near Baker, California, USA'
_chemical_formula_sum 'Pb.999 Cu2 Te S.5 O8.5 H2'
_cell_length_a 14.3126
_cell_length_b 5.2267
_cell_length_c 9.4878
_cell_angle_alpha 90
_cell_angle_beta 106.815
_cell_angle_gamma 90
_cell_volume 679.413
_exptl_crystal_density_diffrn      6.020
_symmetry_space_group_name_H-M 'P 1 21/c 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'x,1/2-y,1/2+z'
  '-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_occupancy
Pb   0.34148   0.07950   0.39773   0.87300
PbA   0.34210   0.96500   0.43700   0.04900
PbB   0.34150   0.85000   0.41120   0.07700
Cu1   0.79260   0.47580   0.84720   1.00000
Cu2   0.90790   0.52820   0.19160   1.00000
Te   0.16195   0.49330   0.49077   1.00000
S   0.53340   0.08700   0.19930   0.50000
O1   0.85770   0.14400   0.83620   1.00000
O2   0.07660   0.20900   0.48360   1.00000
O3   0.27000   0.29100   0.60110   1.00000
O-H4   0.04530   0.69600   0.36870   1.00000
O5   0.17570   0.15600   0.80800   1.00000
O6   0.76480   0.29100   0.01200   1.00000
O7   0.62670   0.09100   0.18300   0.50000
Wat7   0.62670   0.09100   0.18300   0.50000
O8   0.53000   0.03200   0.35400   0.50000
O9   0.49300   0.86200   0.11500   0.50000
O10   0.48000   0.32900   0.14200   0.50000
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
Pb 0.01840 0.02170 0.02610 -0.00080 0.00770 0.00120
Cu1 0.01810 0.02140 0.01160 0.00010 0.00590 -0.00010
Cu2 0.02060 0.01950 0.01660 0.00080 0.00790 0.00120
Te 0.01550 0.02090 0.01140 -0.00030 0.00530 -0.00050
S 0.01300 0.03500 0.02300 0.00300 0.00300 0.00500
O1 0.03600 0.01900 0.00700 0.00800 0.01200 -0.00100
O2 0.02000 0.02600 0.01800 -0.00400 -0.00100 -0.00900
O3 0.02300 0.01600 0.02300 -0.00200 0.00900 0.00100
O-H4 0.01700 0.02400 0.01100 -0.00200 0.00000 -0.00500
O5 0.02500 0.02600 0.03300 0.00300 0.01700 0.00300
O6 0.02100 0.01100 0.04000 0.00700 0.00800 0.00400
O7 0.05200 0.07700 0.04800 0.02300 0.03200 0.03300
Wat7 0.05200 0.07700 0.04800 0.02300 0.03200 0.03300