data_global
_chemical_name_mineral 'Slawsonite'
loop_
_publ_author_name
'Benna P'
'Bruno E'
_journal_name_full 'American Mineralogist'
_journal_volume 86 
_journal_year 2001
_journal_page_first 690
_journal_page_last 696
_publ_section_title
;
 Single-crystal in situ high-temperature structural investigation
 on strontium feldspar
 Sample T = 670 C
;
_database_code_amcsd 0002656
_chemical_compound_source 'Synthetic'
_chemical_formula_sum 'Sr (Al1.9 Si2.1) O8'
_cell_length_a 8.428
_cell_length_b 12.975
_cell_length_c 14.291
_cell_angle_alpha 90
_cell_angle_beta 115.34
_cell_angle_gamma 90
_cell_volume 1412.405
_exptl_crystal_density_diffrn      3.065
_symmetry_space_group_name_H-M 'I 1 2/c 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,1/2+z'
  'x,-y,1/2+z'
  '1/2+x,1/2-y,+z'
  '-x,y,1/2-z'
  '1/2-x,1/2+y,-z'
  '-x,-y,-z'
  '1/2-x,1/2-y,1/2-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
Sr   0.27460  -0.00130   0.06600   1.00000   0.05000
AlT1(0)   0.00720   0.17700   0.10860   0.19000   0.02100
SiT1(0)   0.00720   0.17700   0.10860   0.81000   0.02100
AlT1(z)   0.00390   0.17900   0.61640   0.81000   0.02200
SiT1(z)   0.00390   0.17900   0.61640   0.19000   0.02200
AlT2(0)   0.69750   0.12130   0.17150   0.76000   0.02100
SiT2(0)   0.69750   0.12130   0.17150   0.24000   0.02100
AlT2(z)   0.68930   0.11360   0.67250   0.14000   0.02000
SiT2(z)   0.68930   0.11360   0.67250   0.86000   0.02000
OA(1)   0.00520   0.13190   0.00100   1.00000   0.03300
OA(2)   0.59950  -0.00050   0.14370   1.00000   0.03400
OB(0)   0.82940   0.13050   0.10680   1.00000   0.04200
OB(z)   0.81070   0.12810   0.61220   1.00000   0.04400
OC(0)   0.01390   0.30060   0.11860   1.00000   0.03700
OC(z)   0.02290   0.31060   0.63250   1.00000   0.04000
OD(0)   0.18380   0.12650   0.19640   1.00000   0.04600
OD(z)   0.19630   0.12030   0.70270   1.00000   0.04000
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
Sr 0.02200 0.06600 0.05400 0.00000 0.00800 -0.00400
AlT1(0) 0.02000 0.02500 0.01900 -0.00500 0.00900 -0.00100
SiT1(0) 0.02000 0.02500 0.01900 -0.00500 0.00900 -0.00100
AlT1(z) 0.02100 0.02400 0.01900 -0.00500 0.00800 -0.00100
SiT1(z) 0.02100 0.02400 0.01900 -0.00500 0.00800 -0.00100
AlT2(0) 0.01700 0.02000 0.02400 -0.00200 0.00700 -0.00200
SiT2(0) 0.01700 0.02000 0.02400 -0.00200 0.00700 -0.00200
AlT2(z) 0.01500 0.01900 0.02300 -0.00100 0.00500 0.00000
SiT2(z) 0.01500 0.01900 0.02300 -0.00100 0.00500 0.00000
OA(1) 0.03800 0.04400 0.02100 -0.00700 0.01500 -0.00800
OA(2) 0.02200 0.01900 0.05400 0.00000 0.00900 -0.00300
OB(0) 0.03600 0.04800 0.05200 -0.01600 0.03000 -0.00600
OB(z) 0.02800 0.05400 0.05600 -0.00900 0.02400 0.00500
OC(0) 0.03200 0.03000 0.04400 -0.00900 0.01000 -0.00600
OC(z) 0.03100 0.03000 0.05400 -0.01600 0.01200 -0.00700
OD(0) 0.03800 0.05900 0.02700 0.00400 0.00200 0.00500
OD(z) 0.03100 0.04900 0.03000 0.00800 0.00200 0.00300