data_global _chemical_name_mineral 'Kamphaugite-(Y)' loop_ _publ_author_name 'Romming C' 'Kocharian A K' 'Raade G' _journal_name_full 'European Journal of Mineralogy' _journal_volume 5 _journal_year 1993 _journal_page_first 685 _journal_page_last 690 _publ_section_title ; The crystal structure of kamphaugite-(Y) ; _database_code_amcsd 0006483 _chemical_formula_sum 'Y Ca C2 (O8 H3)' _cell_length_a 7.434 _cell_length_b 7.434 _cell_length_c 21.793 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 1204.376 _exptl_crystal_density_diffrn 3.133 _symmetry_space_group_name_H-M 'P 41 21 2' loop_ _space_group_symop_operation_xyz 'x,y,z' 'y,x,-z' '1/2-y,1/2+x,1/4+z' '1/2-x,1/2+y,1/4-z' '-x,-y,1/2+z' '-y,-x,1/2-z' '1/2+y,1/2-x,3/4+z' '1/2+x,1/2-y,3/4-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_U_iso_or_equiv Y1 0.99024 0.76810 0.56887 0.00870 Ca1 0.99750 0.26180 0.56330 0.00740 C1 0.67340 0.54870 0.57670 0.01300 C2 0.32510 0.95960 0.58640 0.00900 O-H1 0.81260 0.01080 0.53570 0.01200 WatO2 0.01460 0.30300 0.27760 0.01900 O11 0.69100 0.70350 0.60210 0.01500 O12 0.54410 0.45210 0.58730 0.02500 O13 0.80470 0.50360 0.53870 0.02200 O21 0.46720 0.04200 0.60290 0.02200 O22 0.28670 0.80830 0.60960 0.01800 O23 0.21090 0.02550 0.54680 0.01600