data_global _chemical_name_mineral 'Marialite' loop_ _publ_author_name 'Antao S M' 'Hassan I' _journal_name_full 'The Canadian Mineralogist' _journal_volume 46 _journal_year 2008 _journal_page_first 1577 _journal_page_last 1591 _publ_section_title ; Increase in Al-Si and Na-Ca disorder with temperature in scapolite Me32.9 Note: T = 702 C Note: 32.9% Meionite, 67.1% Marialite ; _database_code_amcsd 0006240 _chemical_compound_source 'Monmouth Township, Ontario, Canada' _chemical_formula_sum '(Ca1.24 Na2.76) Si8.44 Al3.56 O28 (C.24 Cl.76)' _cell_length_a 12.1673 _cell_length_b 12.1673 _cell_length_c 7.5799 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 1122.153 _exptl_crystal_density_diffrn 2.735 _symmetry_space_group_name_H-M 'P 42/n' loop_ _space_group_symop_operation_xyz 'x,y,z' 'y,1/2-x,1/2-z' '-y,1/2+x,1/2+z' '1/2+x,1/2+y,-z' '1/2-x,1/2-y,z' '1/2-y,x,1/2-z' '1/2+y,-x,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 Ca 0.61780 0.54250 0.75480 0.31000 0.07700 Na 0.61780 0.54250 0.75480 0.69000 0.07700 Si1 0.58760 0.66240 0.24980 1.00000 0.02670 Al2 0.91050 0.16810 0.05560 0.87000 0.02670 Si2 0.91050 0.16810 0.05560 0.13000 0.02670 Al3 0.66900 0.08820 0.96170 0.02000 0.02670 Si3 0.66900 0.08820 0.96170 0.98000 0.02670 O1 0.70880 0.60800 0.24540 1.00000 0.04000 O2 0.94400 0.13540 0.27240 1.00000 0.04000 O3 0.59300 0.18750 0.02740 1.00000 0.04000 O4 0.79710 0.10650 0.97400 1.00000 0.04000 O5 0.51540 0.62020 0.08410 1.00000 0.04000 O6 0.63480 0.97720 0.07580 1.00000 0.04000 O7 0.84070 0.68960 0.75300 1.00000 0.13000 C 0.75000 0.75000 0.75000 0.24000 0.13000 Cl 0.75000 0.75000 0.75000 0.76000 0.13000