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 = 330 C
;
_database_code_amcsd 0002654
_chemical_compound_source 'Synthetic'
_chemical_formula_sum 'Sr (Al1.9 Si2.1) O8'
_cell_length_a 8.399
_cell_length_b 12.963
_cell_length_c 14.266
_cell_angle_alpha 90
_cell_angle_beta 115.39
_cell_angle_gamma 90
_cell_volume 1403.202
_exptl_crystal_density_diffrn      3.085
_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   0.27220  -0.00160   0.06580   1.00000   0.03500
AlT1(0)   0.00720   0.17590   0.10860   0.19000   0.01500
SiT1(0)   0.00720   0.17590   0.10860   0.81000   0.01500
AlT1(z)   0.00360   0.17850   0.61620   0.81000   0.01500
SiT1(z)   0.00360   0.17850   0.61620   0.19000   0.01500
AlT2(0)   0.69610   0.12070   0.17110   0.76000   0.01400
SiT2(0)   0.69610   0.12070   0.17110   0.24000   0.01400
AlT2(z)   0.68770   0.11360   0.67220   0.14000   0.01400
SiT2(z)   0.68770   0.11360   0.67220   0.86000   0.01400
OA(1)   0.00490   0.13030   0.00080   1.00000   0.02400
OA(2)   0.59550  -0.00030   0.14320   1.00000   0.02300
OB(0)   0.82820   0.12780   0.10700   1.00000   0.02900
OB(z)   0.81070   0.12840   0.61170   1.00000   0.03200
OC(0)   0.01360   0.29900   0.11840   1.00000   0.02800
OC(z)   0.02040   0.31020   0.63120   1.00000   0.02800
OD(0)   0.18560   0.12590   0.19600   1.00000   0.03200
OD(z)   0.19590   0.11960   0.70330   1.00000   0.02900
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 0.01600 0.04600 0.03700 0.00000 0.00500 -0.00300
AlT1(0) 0.01400 0.01800 0.01300 -0.00400 0.00600 -0.00100
SiT1(0) 0.01400 0.01800 0.01300 -0.00400 0.00600 -0.00100
AlT1(z) 0.01400 0.01700 0.01300 -0.00400 0.00600 -0.00100
SiT1(z) 0.01400 0.01700 0.01300 -0.00400 0.00600 -0.00100
AlT2(0) 0.01200 0.01400 0.01600 -0.00100 0.00400 0.00000
SiT2(0) 0.01200 0.01400 0.01600 -0.00100 0.00400 0.00000
AlT2(z) 0.01100 0.01400 0.01600 -0.00200 0.00400 -0.00100
SiT2(z) 0.01100 0.01400 0.01600 -0.00200 0.00400 -0.00100
OA(1) 0.03000 0.02900 0.01300 -0.00400 0.01100 -0.00300
OA(2) 0.01300 0.01400 0.03600 -0.00100 0.00500 -0.00200
OB(0) 0.02500 0.03500 0.03400 -0.01000 0.01800 -0.00300
OB(z) 0.02500 0.03600 0.04200 -0.00700 0.02100 0.00200
OC(0) 0.02400 0.02200 0.03100 -0.00700 0.00600 -0.00400
OC(z) 0.02200 0.01900 0.03600 -0.01000 0.00700 -0.00600
OD(0) 0.02700 0.04100 0.02000 0.00500 0.00300 0.00700
OD(z) 0.02300 0.03300 0.02100 0.00200 0.00000 0.00200