data_global
_chemical_name_mineral 'Rickturnerite'
loop_
_publ_author_name
'Rumsey M S'
'Krivovichev S V'
'Siidra O I'
'Kirk C A'
'Stanley C J'
'Spratt J'
_journal_name_full 'Mineralogical Magazine'
_journal_volume 76 
_journal_year 2012
_journal_page_first 59
_journal_page_last 73
_publ_section_title
;
 Rickturnerite, Pb7O4[Mg(OH)4](OH)Cl3, a complex new lead oxychloride mineral
;
_database_code_amcsd 0018663
_chemical_compound_source 'Torr Works (Merehead) quarry, Cranmore, Somerset, United Kingdom'
_chemical_formula_sum 'Pb14 Cl6 Mg2 O18.02 H10.02'
_cell_length_a 5.8034
_cell_length_b 11.3574
_cell_length_c 12.9393
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 852.849
_exptl_crystal_density_diffrn      6.738
_symmetry_space_group_name_H-M 'P m m 2'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'x,-y,z'
  '-x,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
Pb1   0.50000   0.77460   0.60117   1.00000   0.01680
Pb2   0.00000   0.76690   0.10110   1.00000   0.03170
Pb3   0.00000   0.77620   0.80010   1.00000   0.02460
Pb4   0.00000   0.00000   0.60330   1.00000   0.01910
Pb5   0.50000   0.00000   0.80000   1.00000   0.01750
Pb6   0.50000   0.76730   0.29880   1.00000   0.04680
Pb7   0.50000   0.00000   0.10310   1.00000   0.02650
Pb8   0.00000   0.00000   0.29910   1.00000   0.03550
Pb9   0.50000   0.50000   0.00150   0.80000   0.03870
Pb10   0.50000   0.50000   0.07200   0.10000   0.02200
Pb11   0.00000   0.50000   0.40640   0.78000   0.02880
Pb12   0.00000   0.50000   0.49130   0.22000   0.02000
Pb13   0.00000   0.50000   0.00700   0.10000   0.02000
Cl1   0.00000   0.75000   0.46040   1.00000   0.04900
Cl2   0.50000   0.74980   0.96180   1.00000   0.01600
Cl3   0.00000   0.00000   0.96920   1.00000   0.01200
Cl4   0.50000   0.00000   0.46240   1.00000   0.03600
Mg   0.75200   0.50000   0.70000   1.00000   0.02400
O1   0.74300   0.87560   0.70600   1.00000   0.01800
O2   0.75400   0.86870   0.20100   1.00000   0.03500
O-H1   0.00000   0.37100   0.67000   1.00000   0.03400
O-H2   0.50000   0.38700   0.71800   1.00000   0.03400
O-H3   0.80200   0.50000   0.84800   1.00000   0.03400
O-H4   0.31100   0.50000   0.52800   1.00000   0.03400
O-H5   0.50000   0.62600   0.17900   0.51000   0.01000
O-H6   0.78200   0.57700   0.21000   0.25000   0.01000