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 = 200 K
 Natural Museum of Natural History, Washington D.C. #105914
;
_database_code_amcsd 0002968
_chemical_formula_sum 'P Al O4.44 F.54 H.44 Li'
_cell_length_a 6.6803
_cell_length_b 7.7098
_cell_length_c 6.9549
_cell_angle_alpha 90.793
_cell_angle_beta 117.693
_cell_angle_gamma 91.285
_cell_volume 316.973
_exptl_crystal_density_diffrn      3.073
_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   0.98470   0.34071   0.26040   1.00000   0.00590
Al1   0.00000   0.00000   0.00000   1.00000   0.00510
Al2   0.00000   0.00000   0.50000   1.00000   0.00410
O1  -0.31670   0.01607  -0.15160   1.00000   0.00740
O2   0.29850   0.06010   0.58210   1.00000   0.00790
O3   0.10030  -0.22251  -0.38660   1.00000   0.00670
O4   0.02460   0.23318   0.09590   1.00000   0.00820
O   0.03250   0.08554  -0.23420   0.44000   0.00780
F   0.03250   0.08554  -0.23420   0.54000   0.00780
H   0.20170   0.13700   0.84440   0.44000   0.01900
Li1   0.04900  -0.32140   0.25000   0.38000   0.01300
Li2   0.06740  -0.32240   0.31300   0.62000   0.01200