data_global
_chemical_name_mineral 'Shirokshinite'
loop_
_publ_author_name
'Pekov I V'
'Chukanov N V'
'Ferraris G'
'Ivaldi G'
'Pushcharovsky D Y'
'Zadov A E'
_journal_name_full 'European Journal of Mineralogy'
_journal_volume 15 
_journal_year 2003
_journal_page_first 447
_journal_page_last 454
_publ_section_title
;
 Shirokshinite, K(NaMg2)Si4O10F2, a new mica with octahedral Na from Khidiny massif,
 Kola Peninsula: descriptive data and structural disorder
;
_database_code_amcsd 0006989
_chemical_compound_source 'Khidiny massif, Kola Peninsula, Russia'
_chemical_formula_sum 'K.9 Na.941 Mg1.971 Fe.09 Mn.01 Ti.01 (Si3.98 Al.02) O10 F2'
_cell_length_a 5.269
_cell_length_b 9.092
_cell_length_c 10.197
_cell_angle_alpha 90
_cell_angle_beta 100.12
_cell_angle_gamma 90
_cell_volume 480.895
_exptl_crystal_density_diffrn      2.908
_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
K   0.00000   0.50000   0.00000   0.90000   0.03500
Na   0.00000   0.50000   0.00000   0.02000   0.03500
NaM1   0.00000   0.00000   0.50000   0.30700   0.01300
MgM1   0.00000   0.00000   0.50000   0.65700   0.01300
FeM1   0.00000   0.00000   0.50000   0.03000   0.01300
MnM1   0.00000   0.00000   0.50000   0.00330   0.01300
TiM1   0.00000   0.00000   0.50000   0.00330   0.01300
NaM2   0.00000   0.33380   0.50000   0.30700   0.01900
MgM2   0.00000   0.33380   0.50000   0.65700   0.01900
FeM2   0.00000   0.33380   0.50000   0.03000   0.01900
MnM2   0.00000   0.33380   0.50000   0.00330   0.01900
TiM2   0.00000   0.33380   0.50000   0.00330   0.01900
Si   0.07620   0.16670   0.22610   0.99500   0.01500
Al   0.07620   0.16670   0.22610   0.00500   0.01500
O1   0.04800   0.00000   0.16400   1.00000   0.02400
O2   0.30800   0.24710   0.16360   1.00000   0.02400
O3   0.13200   0.16780   0.38490   1.00000   0.01900
F   0.12400   0.50000   0.38970   1.00000   0.03900