data_global
_chemical_name_mineral 'Hornblende'
loop_
_publ_author_name
'Oberti R'
'Hawthorne F C'
'Ungaretti L'
'Cannillo E'
_journal_name_full 'The Canadian Mineralogist'
_journal_volume 33 
_journal_year 1995
_journal_page_first 867
_journal_page_last 878
_publ_section_title
;
 [6]Al disorder in amphiboles from mantle peridotites
 Sample: F5
;
_database_code_amcsd 0005450
_chemical_formula_sum 'Si6.2 Al2.66 Mg3.55 Fe.83 Ca1.76 Na.76 K.024 H2 O24'
_cell_length_a 9.828
_cell_length_b 17.917
_cell_length_c 5.290
_cell_angle_alpha 90
_cell_angle_beta 105.16
_cell_angle_gamma 90
_cell_volume 899.090
_exptl_crystal_density_diffrn      3.153
_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
SiT1   0.28070   0.08550   0.30230   0.77500   0.00443
AlT1   0.28070   0.08550   0.30230   0.22500   0.00443
SiT2   0.29150   0.17330   0.81360   0.77500   0.00545
AlT2   0.29150   0.17330   0.81360   0.22500   0.00545
MgM1   0.00000   0.08950   0.50000   0.87000   0.00595
FeM1   0.00000   0.08950   0.50000   0.13000   0.00595
AlM2   0.00000   0.17650   0.00000   0.36000   0.00570
FeM2   0.00000   0.17650   0.00000   0.11000   0.00570
MgM2   0.00000   0.17650   0.00000   0.53000   0.00570
AlM3   0.00000   0.00000   0.00000   0.14000   0.00583
MgM3   0.00000   0.00000   0.00000   0.71000   0.00583
FeM3   0.00000   0.00000   0.00000   0.15000   0.00583
FeM4   0.00000   0.27940   0.50000   0.05000   0.00937
MgM4   0.00000   0.27940   0.50000   0.01000   0.00937
CaM4   0.00000   0.27940   0.50000   0.44000   0.00937
FeM4*   0.00000   0.25270   0.50000   0.05000   0.00621
MgM4*   0.00000   0.25270   0.50000   0.01000   0.00621
CaM4*   0.00000   0.25270   0.50000   0.44000   0.00621
NaA   0.00000   0.50000   0.00000   0.15200   0.06485
KA   0.00000   0.50000   0.00000   0.00400   0.06485
NaA(m)   0.02000   0.50000   0.06110   0.15200   0.03952
KA(m)   0.02000   0.50000   0.06110   0.00500   0.03952
NaA(2)   0.00000   0.46900   0.00000   0.15200   0.02039
KA(2)   0.00000   0.46900   0.00000   0.00500   0.02039
H   0.19020   0.00000   0.76670   1.00000   0.01849
O1   0.10600   0.08860   0.21400   1.00000   0.01039
O2   0.11980   0.17410   0.73560   1.00000   0.00811
O-h3   0.10850   0.00000   0.71640   1.00000   0.00963
O4   0.36880   0.25040   0.78780   1.00000   0.01153
O5   0.35060   0.14120   0.11340   1.00000   0.01051
O6   0.34320   0.11610   0.61090   1.00000   0.01267
O7   0.33930   0.00000   0.27200   1.00000   0.01368