data_global _chemical_name_mineral 'Albite-Ge' loop_ _publ_author_name 'Kroll H' 'Flogel J' 'Breit U' 'Lons J' 'Pentinghaus H' _journal_name_full 'European Journal of Mineralogy' _journal_volume 3 _journal_year 1991 _journal_page_first 739 _journal_page_last 749 _publ_section_title ; Order and anti-order in Ge-substituted alkali feldspars Sample: Na[AlSiGe2O8] synthesized at 1040 deg C ; _database_code_amcsd 0006424 _chemical_formula_sum 'Na (Al Si Ge2) O8' _cell_length_a 8.3314 _cell_length_b 13.1562 _cell_length_c 7.2657 _cell_angle_alpha 94.255 _cell_angle_beta 116.300 _cell_angle_gamma 90.563 _cell_volume 711.172 _exptl_crystal_density_diffrn 3.281 _symmetry_space_group_name_H-M 'C -1' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2+y,z' '-x,-y,-z' '1/2-x,1/2-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 Na0 0.27830 0.01500 0.12620 0.20000 0.11019 Na1 0.27430 -0.02490 0.18040 0.20000 0.01912 Na2 0.28410 0.04250 0.08510 0.20000 0.01912 Na3 0.27460 0.02790 0.11600 0.20000 0.01912 Na4 0.26480 0.00380 0.13600 0.20000 0.01912 AlT10 0.00970 0.16048 0.21229 0.30000 0.00963 SiT10 0.00970 0.16048 0.21229 0.19000 0.00963 GeT10 0.00970 0.16048 0.21229 0.51100 0.00963 AlT1m 0.00281 0.81284 0.22977 0.28000 0.00912 SiT1m 0.00281 0.81284 0.22977 0.28000 0.00912 GeT1m 0.00281 0.81284 0.22977 0.43900 0.00912 AlT20 0.68865 0.10592 0.31458 0.19000 0.01001 SiT20 0.68865 0.10592 0.31458 0.29000 0.01001 GeT20 0.68865 0.10592 0.31458 0.51900 0.01001 AlT2m 0.67883 0.87553 0.35555 0.23000 0.00988 SiT2m 0.67883 0.87553 0.35555 0.24000 0.00988 GeT2m 0.67883 0.87553 0.35555 0.53100 0.00988 OA1 0.00810 0.12890 0.97820 1.00000 0.02128 OA2 0.58150 0.98830 0.27400 1.00000 0.01545 OB0 0.81950 0.09740 0.18820 1.00000 0.02330 OBm 0.81270 0.84020 0.24550 1.00000 0.03014 OC0 0.00760 0.28630 0.28370 1.00000 0.01824 OCm 0.01810 0.68370 0.20420 1.00000 0.02128 OD0 0.20060 0.10770 0.38070 1.00000 0.02052 ODm 0.18870 0.86550 0.43140 1.00000 0.02660