data_global
_chemical_name_mineral 'Mendipite'
loop_
_publ_author_name
'Krivovichev S V'
'Burns P C'
_journal_name_full 'European Journal of Mineralogy'
_journal_volume 13 
_journal_year 2001
_journal_page_first 801
_journal_page_last 809
_publ_section_title
;
 Crystal chemistry of lead oxide chlorides. I. Crystal structures of
 synthetic mendipite, Pb3O2Cl2, and synthetic damaraite, Pb3O2(OH)Cl
;
_database_code_amcsd 0006898
_chemical_formula_sum 'Pb3 O2 Cl2'
_cell_length_a 11.879
_cell_length_b 5.808
_cell_length_c 9.505
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 655.781
_exptl_crystal_density_diffrn      7.338
_symmetry_space_group_name_H-M 'P n m a'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'x,1/2-y,z'
  '-x,1/2+y,-z'
  '1/2-x,1/2+y,1/2+z'
  '1/2+x,1/2-y,1/2-z'
  '1/2+x,y,1/2-z'
  '1/2-x,-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
Pb1   0.08180   0.25000   0.08190   0.01700
Pb2   0.28180   0.25000   0.36790   0.02000
Pb3   0.55990   0.25000   0.79580   0.01900
O   0.41850   0.99500   0.38800   0.01600
Cl1   0.36490   0.25000   0.08080   0.02800
Cl2   0.81070   0.25000   0.80550   0.02500
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
Pb1 0.01700 0.01500 0.01800 0.00000 -0.00200 0.00000
Pb2 0.01500 0.01800 0.02700 0.00000 -0.00300 0.00000
Pb3 0.02300 0.01800 0.01600 0.00000 0.00100 0.00000
Cl1 0.02900 0.03300 0.02100 0.00000 0.00600 0.00000
Cl2 0.02000 0.02900 0.02700 0.00000 -0.00800 0.00000