#------------------------------------------------------------------------------
#$Date: 2008-01-27 16:50:57 +0200 (Sun, 27 Jan 2008) $
#$Revision: 30 $
#$URL: file:///home/coder/svn-repositories/cod/cif/1/1000035.cif $
#------------------------------------------------------------------------------
#
# This file is available in the Crystallography Open Database (COD),
# http://www.crystallography.net/
#
# All data on this site have been placed in the public domain by the
# contributors.
#
data_1000035
loop_
_publ_author_name
'Clark, J R'
'Appleman, D E'
'Papike, J J'
_publ_section_title
;
Crystal-Chemical Characterization of Clinopyroxenes based on Eight New 
Structure Refinements
;
_journal_coden_ASTM              MSAPAX
_journal_name_full
;
Mineralogical Society of America: Special Papers
;
_journal_page_first              31
_journal_page_last               50
_journal_volume                  2
_journal_year                    1969
_chemical_compound_source        'from Kakanui, New Zealand'
_chemical_formula_analytical
;
(Na.09 Ca.61) (Mg.90 Fe.21 Al.16) (Si1.83 Al.17 Ti.02) O6
;
_chemical_formula_structural     'Na.1 Ca.6 Mg.9 Fe.2 Ti.0 Al.34 Si1.82 O6'
_chemical_formula_sum            'Al.34 Ca.6 Fe.2 Mg.9 Na.1 O6 Si1.82'
_chemical_name_mineral           Augite
_chemical_name_systematic
;
Sodium calcium magnesium iron titanium alumosilicate *
;
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      15
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_cell_angle_alpha                90
_cell_angle_beta                 106.97(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   9.699(1)
_cell_length_b                   8.844(1)
_cell_length_c                   5.272(1)
_cell_volume                     432.5
_refine_ls_R_factor_all          0.049
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
-x,y,1/2-z
-x,-y,-z
x,-y,1/2+z
1/2+x,1/2+y,z
1/2-x,1/2+y,1/2-z
1/2-x,1/2-y,-z
1/2+x,1/2-y,1/2+z
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_symmetry_multiplicity
_atom_site_Wyckoff_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_attached_hydrogens
_atom_site_calc_flag
Na1 Na1+ 4 e 0. 0.2952(1) 0.25 0.09 0 d
Ca1 Ca2+ 4 e 0. 0.2952(1) 0.25 0.616 0 d
Mg1 Mg2+ 4 e 0. 0.9063(1) 0.25 0.715 0 d
Mg2 Mg2+ 4 e 0. 0.2952(1) 0.25 0.187 0 d
Fe1 Fe2+ 4 e 0. 0.2952(1) 0.25 0.107 0 d
Fe2 Fe2+ 4 e 0. 0.9063(1) 0.25 0.103(5) 0 d
Al1 Al3+ 4 e 0. 0.9063(1) 0.25 0.182 0 d
Al2 Al3+ 8 f 0.2896(1) 0.0924(1) 0.2353(1) 0.08 0 d
Ti1 Ti4+ 8 f 0.2896(1) 0.0924(1) 0.2353(1) 0.01 0 d
Si1 Si4+ 8 f 0.2896(1) 0.0924(1) 0.2353(1) 0.91 0 d
O1 O2- 8 f 0.1150(2) 0.0865(3) 0.1402(4) 1. 0 d
O2 O2- 8 f 0.3647(3) 0.2530(3) 0.3260(5) 1. 0 d
O3 O2- 8 f 0.3256(2) 0.0185(3) 0.0013(4) 1. 0 d
loop_
_atom_type_symbol
_atom_type_oxidation_number
Na1+ 1.000
Ca2+ 2.000
Mg2+ 2.000
Fe2+ 2.500
Al3+ 3.000
Ti4+ 4.000
Si4+ 4.000
O2- -2.000