data_global
_chemical_name_mineral 'Georgerobinsonite'
loop_
_publ_author_name
'Cooper M A'
'Ball N A'
'Hawthorne F C'
'Paar W H'
'Roberts A C'
'Moffatt E'
_journal_name_full 'The Canadian Mineralogist'
_journal_volume 49 
_journal_year 2011
_journal_page_first 865
_journal_page_last 876
_publ_section_title
;
 Georgerobinsonite, Pb4(CrO4)2(OH)2FCl, a new chromate mineral from the
 Mammoth-St. Anthony mine, Tiger, Pinal County, Arizona: description and crystal structure
;
_database_code_amcsd 0018387
_chemical_compound_source 'Mammoth-St. Anthony mine, Tiger, Pinal County, Arizona, USA'
_chemical_formula_sum 'Pb4 Cr2 Cl F O10 H2'
_cell_length_a 7.6256
_cell_length_b 11.6081
_cell_length_c 6.8961
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 610.434
_exptl_crystal_density_diffrn      6.253
_symmetry_space_group_name_H-M 'P m m n'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'x,1/2-y,z'
  '-x,1/2+y,-z'
  '1/2-x,y,z'
  '1/2+x,-y,-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
_atom_site_U_iso_or_equiv
Pb(1)   0.25000   0.59690   0.12642   1.00000   0.02183
Pb(2)   0.50242   0.25000   0.41670   1.00000   0.02025
Cr   0.25000   0.49812   0.64850   1.00000   0.01290
Cl   0.25000   0.22840   0.07200   0.50000   0.02170
F   0.75000   0.25000   0.13270   1.00000   0.02700
O(1)   0.42260   0.51210   0.78040   1.00000   0.02640
O(2)   0.25000   0.60700   0.49310   1.00000   0.02320
O(3)   0.25000   0.37630   0.52890   1.00000   0.02350
O-h4   0.43880   0.75000   0.23060   1.00000   0.01660
H   0.55000   0.75000   0.15900   1.00000   0.02000
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(1) 0.02560 0.02330 0.01660 0.00000 0.00000 -0.00310
Pb(2) 0.01470 0.02390 0.02210 0.00000 -0.00089 0.00000
Cr 0.01340 0.01350 0.01170 0.00000 0.00000 -0.00150
F 0.03500 0.03400 0.01100 0.00000 0.00000 0.00000
O(1) 0.02300 0.03300 0.02300 0.00600 -0.00300 -0.00600
O(2) 0.02800 0.02100 0.02100 0.00000 0.00000 0.00000
O(3) 0.02300 0.01600 0.03200 0.00000 0.00000 -0.00300
O-h4 0.01400 0.01900 0.01600 0.00000 -0.00100 0.00000