data_global
_chemical_name_mineral 'Slawsonite'
loop_
_publ_author_name
'Benna P'
'Nestola F'
'Ballaran T B'
'Balic-Zunic T'
'Lundegaard L F'
'Bruno E'
_journal_name_full 'American Mineralogist'
_journal_volume 92 
_journal_year 2007
_journal_page_first 1190
_journal_page_last 1199
_publ_section_title
;
 The high-pressure structural configurations of Ca0.2Sr0.8Al2Si2O8 feldspar:
 The I-1-I2/c and I2/c-P2_1/c phase transitions
 Sample: P = 7.4 GPa
;
_database_code_amcsd 0004411
_chemical_compound_source 'Synthetic'
_chemical_formula_sum '(Ca.2 Sr.8) Si2 Al2 O8'
_cell_length_a 8.116
_cell_length_b 12.410
_cell_length_c 13.728
_cell_angle_alpha 90
_cell_angle_beta 114.19
_cell_angle_gamma 90
_cell_volume 1261.267
_exptl_crystal_density_diffrn      3.331
_symmetry_space_group_name_H-M 'P 1 21/c 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'x,1/2-y,1/2+z'
  '-x,1/2+y,1/2-z'
  '-x,-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
Ca0   0.53930   0.25710   0.31420   0.20000   0.01500
Sr0   0.53930   0.25710   0.31420   0.80000   0.01500
Cai   0.01200   0.74170   0.82290   0.20000   0.01500
Sri   0.01200   0.74170   0.82290   0.80000   0.01500
Si100   0.24750   0.42670   0.36350   1.00000   0.01200
Si10i   0.72810   0.93950   0.84470   1.00000   0.01200
Al1z0   0.25200   0.41350   0.87320   1.00000   0.01400
Al1zi   0.73990   0.95180   0.36020   1.00000   0.01000
Al200   0.94100   0.38900   0.42910   1.00000   0.01100
Al20i   0.42740   0.86790   0.91640   1.00000   0.01100
Si2z0   0.93930   0.35210   0.93510   1.00000   0.01200
Si2zi   0.42070   0.87260   0.42350   1.00000   0.01200
OA10   0.26520   0.38560   0.25320   1.00000   0.01300
OA1i   0.75680   0.87570   0.75060   1.00000   0.01900
OA20   0.86210   0.27110   0.45150   1.00000   0.02500
OA2i   0.32750   0.74060   0.87250   1.00000   0.02300
OB00   0.06380   0.37290   0.35160   1.00000   0.01900
OB0i   0.54780   0.88320   0.84100   1.00000   0.02700
OBz0   0.05710   0.35060   0.86710   1.00000   0.02300
OBzi   0.55750   0.89820   0.37000   1.00000   0.02700
OC00   0.23730   0.55780   0.37850   1.00000   0.02100
OC0i   0.72170   0.07100   0.83940   1.00000   0.02900
OCz0   0.25210   0.54980   0.89460   1.00000   0.02500
OCzi   0.75450   0.09510   0.36740   1.00000   0.01800
OD00   0.43330   0.37640   0.45240   1.00000   0.02500
OD0i   0.90770   0.91280   0.94660   1.00000   0.03900
ODz0   0.46470   0.36130   0.95100   1.00000   0.01800
ODzi   0.94230   0.89110   0.44730   1.00000   0.01800