data_global
_chemical_name_mineral 'Richterite'
loop_
_publ_author_name
'Oberti R'
'Ungaretti L'
'Cannillo E'
'Hawthorne F C'
_journal_name_full 'European Journal of Mineralogy'
_journal_volume 4 
_journal_year 1992
_journal_page_first 425
_journal_page_last 439
_publ_section_title
;
 The behaviour of Ti in amphiboles: I. Four- and six-coordinate Ti in richterite
 Sample: R(2) Potassium-richterite
;
_database_code_amcsd 0006439
_chemical_formula_sum 'O23.38 F.62 Na1.114 K.872 Al.098 Ti.006 Mg4.872 Mn.072 Sr.051 Ca1.042 Si7.951 H1.38'
_cell_length_a 9.998
_cell_length_b 17.976
_cell_length_c 5.273
_cell_angle_alpha 90
_cell_angle_beta 104.75
_cell_angle_gamma 90
_cell_volume 916.455
_exptl_crystal_density_diffrn      3.051
_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
O1   0.10970   0.08660   0.21780   1.00000   0.00583
O2   0.11820   0.17020   0.72610   1.00000   0.00671
O3   0.10540   0.00000   0.71430   0.69000   0.00747
F   0.10540   0.00000   0.71430   0.31000   0.00747
O4   0.36200   0.24810   0.79800   1.00000   0.00899
O5   0.34360   0.13020   0.09480   1.00000   0.00836
O6   0.33990   0.11720   0.59290   1.00000   0.00811
O7   0.33190   0.00000   0.30080   1.00000   0.00798
NaA   0.00000   0.50000   0.00000   0.10350   0.01634
KA   0.00000   0.50000   0.00000   0.43600   0.01634
NaAm   0.03280   0.50000   0.07640   0.05170   0.01051
KAm   0.03280   0.50000   0.07640   0.21800   0.01051
AlM1   0.00000   0.08920   0.50000   0.00980   0.00595
TiM1   0.00000   0.08920   0.50000   0.00120   0.00595
MgM1   0.00000   0.08920   0.50000   0.97450   0.00595
MnM1   0.00000   0.08920   0.50000   0.01450   0.00595
AlM2   0.00000   0.17950   0.00000   0.00980   0.00646
TiM2   0.00000   0.17950   0.00000   0.00120   0.00646
MgM2   0.00000   0.17950   0.00000   0.97450   0.00646
MnM2   0.00000   0.17950   0.00000   0.01450   0.00646
AlM3   0.00000   0.00000   0.00000   0.00980   0.00494
TiM3   0.00000   0.00000   0.00000   0.00120   0.00494
MgM3   0.00000   0.00000   0.00000   0.97450   0.00494
MnM3   0.00000   0.00000   0.00000   0.01450   0.00494
SrM4   0.00000   0.27760   0.50000   0.02550   0.01089
CaM4   0.00000   0.27760   0.50000   0.52100   0.01089
NaM4   0.00000   0.27760   0.50000   0.45350   0.01089
SiT1   0.27490   0.08530   0.29870   0.99390   0.00418
AlT1   0.27490   0.08530   0.29870   0.00610   0.00418
SiT2   0.28470   0.17200   0.80420   0.99390   0.00431
AlT2   0.28470   0.17200   0.80420   0.00610   0.00431
H   0.19040   0.00000   0.75090   0.69000   0.02596