data_global
_chemical_name_mineral 'Cechite'
loop_
_publ_author_name
'Pertlik F'
_journal_name_full 'Neues Jahrbuch fur Mineralogie, Monatshefte'
_journal_volume 1989 
_journal_year 1989
_journal_page_first 34
_journal_page_last 40
_publ_section_title
;
 The crystal structure of cechite, Pb(Fe,Mn)(VO4)(OH) with Fe>Mn. A mineral of the descloizite group
;
_database_code_amcsd 0014834
_chemical_compound_source 'Vrancice, Bohemian pluton, Pribram, Czechoslovakia (Czech Republic)'
_chemical_formula_sum 'Pb (Fe.8 Mn.2) V O5 H'
_cell_length_a 7.605
_cell_length_b 9.435
_cell_length_c 6.099
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 437.623
_exptl_crystal_density_diffrn      5.992
_symmetry_space_group_name_H-M 'P n a m'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'x,y,1/2-z'
  '-x,-y,1/2+z'
  '1/2-x,1/2+y,1/2+z'
  '1/2+x,1/2-y,1/2-z'
  '1/2+x,1/2-y,z'
  '1/2-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
Pb   0.13061   0.17430   0.25000   1.00000
Fe   0.50000   0.00000   0.00000   0.80000
Mn   0.50000   0.00000   0.00000   0.20000
V   0.86470   0.19070   0.75000   1.00000
O1   0.87510   0.29380   0.51130   1.00000
O2   0.03990   0.08510   0.75000   1.00000
O3   0.68650   0.07580   0.75000   1.00000
O-H   0.65070   0.06930   0.25000   1.00000
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 0.02010 0.01430 0.01910 0.00020 0.00000 0.00000
Fe 0.01820 0.01210 0.00820 0.00050 -0.00030 -0.00020
Mn 0.01820 0.01210 0.00820 0.00050 -0.00030 -0.00020
V 0.01580 0.01130 0.00700 -0.00210 0.00000 0.00000
O1 0.02580 0.01580 0.01100 -0.00420 0.00090 0.00120
O2 0.01550 0.02230 0.04020 -0.00160 0.00000 0.00000
O3 0.01770 0.01640 0.00910 -0.00490 0.00000 0.00000
O-H 0.01860 0.00860 0.01020 0.00000 0.00000 0.00000