data_global _chemical_name_mineral 'Moissanite 6H' loop_ _publ_author_name 'Ott H' _journal_name_full 'Zeitschrift fur Kristallographie' _journal_volume 61 _journal_year 1925 _journal_page_first 515 _journal_page_last 531 _publ_section_title ; Die Gitterstruktur des Karborunds ( Si C ) I. _cod_database_code 1011053 ; _database_code_amcsd 0017954 _chemical_formula_sum 'C Si' _cell_length_a 3.095 _cell_length_b 3.095 _cell_length_c 15.17 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 120 _cell_volume 125.845 _exptl_crystal_density_diffrn 3.174 _symmetry_space_group_name_H-M 'P 63' loop_ _space_group_symop_operation_xyz 'x,y,z' 'x-y,x,1/2+z' '-y,x-y,z' '-x,-y,1/2+z' '-x+y,-x,z' 'y,-x+y,1/2+z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z C1 0.00000 0.00000 0.00000 C2 0.33333 0.66667 0.16667 C3 0.33333 0.66667 0.83330 Si1 0.00000 0.00000 0.12500 Si2 0.33333 0.66667 0.29170 Si3 0.33333 0.66667 0.95830