data_global
_chemical_name_mineral 'Lamprophyllite'
loop_
_publ_author_name
'Saf'yanov Y N'
'Vasil'eva N O'
'Golovachev V P'
'Kuz'min E A'
'Belov N V'
_journal_name_full 'Soviet Physics Doklady'
_journal_volume 28 
_journal_year 1983
_journal_page_first 207
_journal_page_last 209
_publ_section_title
;
 The crystal structure of lamprophyllite
;
_database_code_amcsd 0015612
_chemical_compound_source 'Kola Peninsula, Russia'
_chemical_formula_sum 'Na Ca Mn.5 Fe Ti2.5 (Sr.667 Ba.667 K.667) Si4 O17.333 F.667 H.667'
_cell_length_a 19.431
_cell_length_b 7.086
_cell_length_c 5.392
_cell_angle_alpha 90
_cell_angle_beta 96.75
_cell_angle_gamma 90
_cell_volume 737.268
_exptl_crystal_density_diffrn      3.807
_symmetry_space_group_name_H-M 'C 1 2/m 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,z'
  'x,-y,z'
  '1/2+x,1/2-y,z'
  '-x,y,-z'
  '1/2-x,1/2+y,-z'
  '-x,-y,-z'
  '1/2-x,1/2-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
NaM2   0.00000   0.00000   0.00000   0.50000   0.01545
CaM2   0.00000   0.00000   0.00000   0.50000   0.01545
NaM3   0.00000   0.25910   0.50000   0.25000   0.01570
MnM3   0.00000   0.25910   0.50000   0.25000   0.01570
CaM3   0.00000   0.25910   0.50000   0.25000   0.01570
FeM3   0.00000   0.25910   0.50000   0.25000   0.01570
TiM4   0.00000   0.50000   0.00000   0.50000   0.01406
FeM4   0.00000   0.50000   0.00000   0.50000   0.01406
SrM1   0.28410   0.00000   0.26290   0.33333   0.01077
BaM1   0.28410   0.00000   0.26290   0.33333   0.01077
KM1   0.28410   0.00000   0.26290   0.33333   0.01077
Ti   0.14930   0.00000   0.70690   1.00000   0.00038
Si   0.14250   0.28390   0.20450   1.00000   0.00063
O1   0.05970   0.29500   0.17200   1.00000   0.00431
O2   0.17390   0.18900   0.46700   1.00000   0.00519
O3   0.17410   0.18700   0.97100   1.00000   0.00798
O4   0.17490   0.50000   0.21700   1.00000   0.00443
O5   0.06210   0.00000   0.66500   1.00000   0.01191
O6   0.44330   0.00000   0.27300   0.33333   0.01089
O-H6   0.44330   0.00000   0.27300   0.33333   0.01089
F6   0.44330   0.00000   0.27300   0.33333   0.01089