data_global
_chemical_name_mineral 'Amblygonite'
loop_
_publ_author_name
'Groat L A'
'Chakoumakos B C'
'Brouwer D H'
'Hoffman C M'
'Fyfe C A'
'Morell H'
'Schultz A J'
_journal_name_full 'American Mineralogist'
_journal_volume 88 
_journal_year 2003
_journal_page_first 195
_journal_page_last 210
_publ_section_title
;
 The amblygonite (LiAlPO4F) - montebrasite (LiAlPO4OH) solid solution:
 A combined powder and single-crystal neutron diffraction and solid-state Li MAS, CP MAS,
 and REDOR NMR study
 Sample AF-46: from Karibib, South Africa at T = 295 K
 Natural Museum of Natural History, Washington D.C. #105914
;
_database_code_amcsd 0002969
_chemical_formula_sum 'P Al O4.44 F.54 H.44 Li'
_cell_length_a 6.6815
_cell_length_b 7.7160
_cell_length_c 6.9565
_cell_angle_alpha 90.777
_cell_angle_beta 117.617
_cell_angle_gamma 91.275
_cell_volume 317.583
_exptl_crystal_density_diffrn      3.067
_symmetry_space_group_name_H-M 'C -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'
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
P   0.98526   0.34060   0.26028   1.00000   0.00570
Al1   0.00000   0.00000   0.00000   1.00000   0.00580
Al2   0.00000   0.00000   0.50000   1.00000   0.00490
O1  -0.31648   0.01684  -0.15047   1.00000   0.00880
O2   0.29861   0.06004   0.58277   1.00000   0.00930
O3   0.09968  -0.22222  -0.38606   1.00000   0.00790
O4   0.02593   0.23308   0.09627   1.00000   0.00960
O   0.03180   0.08571  -0.23449   0.44000   0.00870
F   0.03180   0.08571  -0.23449   0.54000   0.00870
H   0.20050   0.13770   0.84360   0.44000   0.02200
Li1   0.04700  -0.32210   0.24800   0.40000   0.01630
Li2   0.06770  -0.32340   0.31400   0.60000   0.01560