data_global
_chemical_name_mineral 'Holmquistite'
loop_
_publ_author_name
'Camara F'
'Oberti R'
_journal_name_full 'American Mineralogist'
_journal_volume 90 
_journal_year 2005
_journal_page_first 1167
_journal_page_last 1176
_publ_section_title
;
 The crystal-chemistry of holmquistites: Ferroholmquistite from
 Greenbushes (Western Australia) and
 hints for compositional constraints in B-Li amphiboles
 Sample: Zaire
;
_database_code_amcsd 0003816
_chemical_formula_sum 'Mg2.35 Fe1.26 Mn.04 Zn.01 Al1.34 Li1.98 Na.05 Si8 O23.91 F.09 H3.82'
_cell_length_a 18.3345
_cell_length_b 17.6955
_cell_length_c 5.2764
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 1711.865
_exptl_crystal_density_diffrn      3.081
_symmetry_space_group_name_H-M 'P n m a'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'x,1/2-y,z'
  '-x,1/2+y,-z'
  '1/2-x,1/2+y,1/2+z'
  '1/2+x,1/2-y,1/2-z'
  '1/2+x,y,1/2-z'
  '1/2-x,-y,1/2+z'
  '-x,-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
Mg1   0.12520   0.16000   0.39500   0.77500   0.00600
Fe1   0.12520   0.16000   0.39500   0.20000   0.00600
Mn1   0.12520   0.16000   0.39500   0.02000   0.00600
Zn1   0.12520   0.16000   0.39500   0.00500   0.00600
Al2   0.12540   0.06860  -0.10400   0.67000   0.00600
Fe3+2   0.12540   0.06860  -0.10400   0.30000   0.00600
Fe++2   0.12540   0.06860  -0.10400   0.03000   0.00600
Mg3   0.12530   0.25000  -0.10510   0.80000   0.00600
Fe3   0.12530   0.25000  -0.10510   0.20000   0.00600
Li4   0.12410  -0.00690   0.39790   0.99000   0.01700
Na4   0.12410  -0.00690   0.39790   0.01000   0.01700
NaA   0.37500   0.25000   0.50000   0.03000 ?
Si1A   0.26980   0.16260   0.06760   1.00000   0.00600
Si1B  -0.01920   0.16300   0.72460   1.00000   0.00600
Si2A   0.27330   0.07670   0.57260   1.00000   0.00600
Si2B  -0.02400   0.07770   0.21770   1.00000   0.00600
O1A   0.18100   0.15820   0.05270   1.00000   0.00800
O1B   0.06950   0.15790   0.73760   1.00000   0.00800
O2A   0.18460   0.07640   0.58810   1.00000   0.00800
O2B   0.06510   0.07570   0.20350   1.00000   0.00800
O-H3A   0.18200   0.25000   0.55580   0.95500   0.00900
F3A   0.18200   0.25000   0.55580   0.04500   0.00900
O-H3B   0.06870   0.25000   0.23450   0.95500   0.00900
F3B   0.06870   0.25000   0.23450   0.04500   0.00900
O4A   0.31180  -0.00380   0.56470   1.00000   0.01000
O4B  -0.06430  -0.00070   0.27030   1.00000   0.01000
O5A   0.30490   0.11570  -0.16590   1.00000   0.01000
O5B  -0.05370   0.11360   0.95120   1.00000   0.00900
O6A   0.29750   0.12940   0.33450   1.00000   0.01100
O6B  -0.04680   0.13400   0.45130   1.00000   0.01000
O7A   0.29480   0.25000   0.04550   1.00000   0.01100
O7B  -0.04380   0.25000   0.75950   1.00000   0.01100
HA   0.23700   0.25000   0.56800   0.95500 ?
HB   0.01500   0.25000   0.20700   0.95500 ?