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 = 160 C
;
_database_code_amcsd 0002653
_chemical_compound_source 'Synthetic'
_chemical_formula_sum 'Sr (Al1.9 Si2.1) O8'
_cell_length_a 8.392
_cell_length_b 12.967
_cell_length_c 14.260
_cell_angle_alpha 90
_cell_angle_beta 115.43
_cell_angle_gamma 90
_cell_volume 1401.411
_exptl_crystal_density_diffrn      3.089
_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   0.27070  -0.00180   0.06570   1.00000   0.02500
AlT1(0)   0.00670   0.17530   0.10850   0.19000   0.01100
SiT1(0)   0.00670   0.17530   0.10850   0.81000   0.01100
AlT1(z)   0.00360   0.17810   0.61620   0.81000   0.01000
SiT1(z)   0.00360   0.17810   0.61620   0.19000   0.01000
AlT2(0)   0.69490   0.12040   0.17080   0.76000   0.01000
SiT2(0)   0.69490   0.12040   0.17080   0.24000   0.01000
AlT2(z)   0.68640   0.11340   0.67180   0.14000   0.01000
SiT2(z)   0.68640   0.11340   0.67180   0.86000   0.01000
OA(1)   0.00430   0.12960   0.00040   1.00000   0.01600
OA(2)   0.59370  -0.00020   0.14300   1.00000   0.01700
OB(0)   0.82800   0.12700   0.10680   1.00000   0.02200
OB(z)   0.81050   0.12760   0.61160   1.00000   0.02200
OC(0)   0.01380   0.29870   0.11870   1.00000   0.02100
OC(z)   0.01980   0.30960   0.63080   1.00000   0.02100
OD(0)   0.18620   0.12550   0.19640   1.00000   0.02400
OD(z)   0.19630   0.11910   0.70320   1.00000   0.02100
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 0.01100 0.03500 0.02700 0.00000 0.00400 -0.00300
AlT1(0) 0.01000 0.01300 0.00900 -0.00300 0.00400 -0.00100
SiT1(0) 0.01000 0.01300 0.00900 -0.00300 0.00400 -0.00100
AlT1(z) 0.00900 0.01300 0.00900 -0.00300 0.00300 -0.00100
SiT1(z) 0.00900 0.01300 0.00900 -0.00300 0.00300 -0.00100
AlT2(0) 0.00800 0.01100 0.01000 -0.00100 0.00300 0.00000
SiT2(0) 0.00800 0.01100 0.01000 -0.00100 0.00300 0.00000
AlT2(z) 0.00700 0.01000 0.01200 -0.00100 0.00300 0.00000
SiT2(z) 0.00700 0.01000 0.01200 -0.00100 0.00300 0.00000
OA(1) 0.01900 0.02100 0.01000 -0.00200 0.00700 -0.00300
OA(2) 0.01000 0.01100 0.02600 0.00100 0.00500 -0.00100
OB(0) 0.01900 0.02600 0.02500 -0.00600 0.01400 -0.00300
OB(z) 0.01700 0.02500 0.02900 -0.00500 0.01400 0.00200
OC(0) 0.01900 0.01600 0.02300 -0.00600 0.00600 -0.00200
OC(z) 0.01600 0.01700 0.02800 -0.00800 0.00700 -0.00500
OD(0) 0.02000 0.03000 0.01500 0.00300 0.00200 0.00300
OD(z) 0.01500 0.02600 0.01400 0.00100 -0.00100 0.00200