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 700 C
;
_database_code_amcsd 0006625
_chemical_formula_sum 'Ca Mg.7 Al.6 Si1.7 O6'
_cell_length_a 9.733
_cell_length_b 8.909
_cell_length_c 5.296
_cell_angle_alpha 90
_cell_angle_beta 106.35
_cell_angle_gamma 90
_cell_volume 440.652
_exptl_crystal_density_diffrn      3.271
_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   0.30260   0.25000   1.00000   0.02546
MgM1   0.00000   0.90710   0.25000   0.70000   0.01583
AlM1   0.00000   0.90710   0.25000   0.30000   0.01583
AlT   0.28700   0.09330   0.22560   0.15000   0.01178
SiT   0.28700   0.09330   0.22560   0.85000   0.01178
O1   0.11300   0.08530   0.13670   1.00000   0.01874
O2   0.36170   0.25280   0.31480   1.00000   0.02520
O3   0.35140   0.01590  -0.00530   1.00000   0.01950
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 0.03410 0.01900 0.01800 0.00000 -0.00090 0.00000
MgM1 0.01740 0.01600 0.01290 0.00000 0.00240 0.00000
AlM1 0.01740 0.01600 0.01290 0.00000 0.00240 0.00000
AlT 0.01070 0.01320 0.01100 -0.00030 0.00260 -0.00130
SiT 0.01070 0.01320 0.01100 -0.00030 0.00260 -0.00130
O1 0.01020 0.02490 0.02060 0.00120 0.00350 -0.00020
O2 0.03070 0.01980 0.02440 -0.00550 0.00660 -0.00250
O3 0.01540 0.02530 0.01770 0.00000 0.00420 -0.00800