data_global
_chemical_name_mineral 'Diopside'
loop_
_publ_author_name
'Tribaudino M'
_journal_name_full 'European Journal of Mineralogy'
_journal_volume 8 
_journal_year 1996
_journal_page_first 273
_journal_page_last 279
_publ_section_title
;
 High-temperature crystal chemistry of C2/c clinopyroxenes along
 the join CaMgSi2O6-CaAl2SiO6
 Sample: Di70CaTs30 at 300 C
;
_database_code_amcsd 0006623
_chemical_formula_sum 'Ca Mg.7 Al.6 Si1.7 O6'
_cell_length_a 9.703
_cell_length_b 8.863
_cell_length_c 5.281
_cell_angle_alpha 90
_cell_angle_beta 106.24
_cell_angle_gamma 90
_cell_volume 436.032
_exptl_crystal_density_diffrn      3.306
_symmetry_space_group_name_H-M 'C 1 2/c 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,z'
  'x,-y,1/2+z'
  '1/2+x,1/2-y,1/2+z'
  '-x,y,1/2-z'
  '1/2-x,1/2+y,1/2-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
CaM2   0.00000   0.30290   0.25000   1.00000   0.01596
MgM1   0.00000   0.90770   0.25000   0.70000   0.00963
AlM1   0.00000   0.90770   0.25000   0.30000   0.00963
AlT   0.28710   0.09370   0.22570   0.15000   0.00735
SiT   0.28710   0.09370   0.22570   0.85000   0.00735
O1   0.11260   0.08530   0.13680   1.00000   0.01292
O2   0.36220   0.25420   0.31660   1.00000   0.01596
O3   0.35180   0.01730  -0.00650   1.00000   0.01279
loop_
_atom_site_aniso_label
_atom_site_aniso_U_11
_atom_site_aniso_U_22
_atom_site_aniso_U_33
_atom_site_aniso_U_12
_atom_site_aniso_U_13
_atom_site_aniso_U_23
CaM2 0.02120 0.01200 0.01180 0.00000 0.00000 0.00000
MgM1 0.01040 0.00970 0.00810 0.00000 0.00140 0.00000
AlM1 0.01040 0.00970 0.00810 0.00000 0.00140 0.00000
AlT 0.00700 0.00800 0.00700 -0.00010 0.00190 -0.00060
SiT 0.00700 0.00800 0.00700 -0.00010 0.00190 -0.00060
O1 0.00660 0.01820 0.01380 0.00080 0.00290 -0.00090
O2 0.01920 0.01310 0.01490 -0.00270 0.00340 -0.00130
O3 0.00960 0.01720 0.01170 0.00510 0.00330 -0.00470