data_global
_chemical_name_mineral 'Pargasite'
loop_
_publ_author_name
'Hawthorne F C'
'Oberti R'
'Sardone N'
_journal_name_full 'The Canadian Mineralogist'
_journal_volume 34 
_journal_year 1996
_journal_page_first 577
_journal_page_last 593
_publ_section_title
;
 Sodium at the A site in clinoamphiboles: the effects of composition
 on patterns of order
 Sample: A12 - KP N.1
;
_database_code_amcsd 0005497
_chemical_formula_sum 'Si7.04 Al2.04 Mg3.23 Fe.69 Ca1.76 Na1.204 K.038 H1.96 O23.96 F.04'
_cell_length_a 9.862
_cell_length_b 17.928
_cell_length_c 5.295
_cell_angle_alpha 90
_cell_angle_beta 105.28
_cell_angle_gamma 90
_cell_volume 903.093
_exptl_crystal_density_diffrn      3.146
_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   0.28000   0.08590   0.30320   0.76000   0.00621
AlT1   0.28000   0.08590   0.30320   0.24000   0.00621
SiT2   0.29070   0.17370   0.81470   1.00000   0.00621
MgM1   0.00000   0.09000   0.50000   0.84000   0.00671
FeM1   0.00000   0.09000   0.50000   0.16000   0.00671
AlM2   0.00000   0.17700   0.00000   0.54000   0.00633
FeM2   0.00000   0.17700   0.00000   0.06000   0.00633
MgM2   0.00000   0.17700   0.00000   0.40000   0.00633
MgM3   0.00000   0.00000   0.00000   0.75000   0.00621
FeM3   0.00000   0.00000   0.00000   0.25000   0.00621
CaM4   0.00000   0.28030   0.50000   0.88000   0.00912
NaM4   0.00000   0.28030   0.50000   0.12000   0.00912
NaAm   0.01000   0.50000   0.01910   0.12400   0.05269
KAm   0.01000   0.50000   0.01910   0.00500   0.05269
NaA2   0.00000   0.47060   0.00000   0.35800   0.03065
KA2   0.00000   0.47060   0.00000   0.01400   0.03065
H   0.21020   0.00000   0.77050   0.98000   0.07346
O1   0.10540   0.08880   0.21420   1.00000   0.01241
O2   0.11950   0.17360   0.73650   1.00000   0.00963
O-h3   0.10800   0.00000   0.71550   0.98000   0.01115
F3   0.10800   0.00000   0.71550   0.02000   0.01115
O4   0.36720   0.25090   0.79000   1.00000   0.01077
O5   0.35100   0.14080   0.11290   1.00000   0.01153
O6   0.34300   0.11590   0.61400   1.00000   0.01267
O7   0.33960   0.00000   0.27250   1.00000   0.01406