data_global
_chemical_name_mineral 'Pargasite'
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: F11
;
_database_code_amcsd 0005455
_chemical_formula_sum 'Si6.088 Al2.812 Mg3.82 Fe.64 Cr.04 Ca3.64 Na.933 K.013 H2 O24'
_cell_length_a 9.857
_cell_length_b 17.932
_cell_length_c 5.285
_cell_angle_alpha 90
_cell_angle_beta 105.36
_cell_angle_gamma 90
_cell_volume 900.787
_exptl_crystal_density_diffrn      3.434
_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   0.08540   0.30310   0.76100   0.00583
AlT1   0.28070   0.08540   0.30310   0.23900   0.00583
SiT2   0.29100   0.17340   0.81390   0.76100   0.00633
AlT2   0.29100   0.17340   0.81390   0.23900   0.00633
MgM1   0.00000   0.08940   0.50000   0.93000   0.00671
FeM1   0.00000   0.08940   0.50000   0.07000   0.00671
CrM2   0.00000   0.17620   0.00000   0.02000   0.00684
AlM2   0.00000   0.17620   0.00000   0.31000   0.00684
FeM2   0.00000   0.17620   0.00000   0.05000   0.00684
MgM2   0.00000   0.17620   0.00000   0.62000   0.00684
AlM3   0.00000   0.00000   0.00000   0.28000   0.00633
MgM3   0.00000   0.00000   0.00000   0.64000   0.00633
FeM3   0.00000   0.00000   0.00000   0.08000   0.00633
FeM4   0.00000   0.27960   0.50000   0.08000   0.00975
MgM4   0.00000   0.27960   0.50000   0.02000   0.00975
CaM4   0.00000   0.27960   0.50000   0.90000   0.00975
FeM4*   0.00000   0.25430   0.50000   0.08000   0.01102
MgM4*   0.00000   0.25430   0.50000   0.02000   0.01102
CaM4*   0.00000   0.25430   0.50000   0.92000   0.01102
NaA   0.00000   0.50000   0.00000   0.18700   0.02989
KA   0.00000   0.50000   0.00000   0.00300   0.02989
NaA(m)   0.02540   0.50000   0.08010   0.18700   0.06725
KA(m)   0.02540   0.50000   0.08010   0.00300   0.06725
NaA(2)   0.00000   0.46830   0.00000   0.18600   0.01596
KA(2)   0.00000   0.46830   0.00000   0.00200   0.01596
H   0.18550   0.00000   0.75550   1.00000   0.03407
O1   0.10590   0.08750   0.21440   1.00000   0.01165
O2   0.11970   0.17360   0.73470   1.00000   0.00874
O-h3   0.10740   0.00000   0.71830   1.00000   0.01077
O4   0.36790   0.25050   0.78710   1.00000   0.01165
O5   0.35070   0.14160   0.11460   1.00000   0.01115
O6   0.34330   0.11520   0.61460   1.00000   0.01330
O7   0.34100   0.00000   0.26940   1.00000   0.01381