data_global _chemical_name_mineral 'Zaccagnaite' loop_ _publ_author_name 'Merlino S' 'Orlandi P' _journal_name_full 'American Mineralogist' _journal_volume 86 _journal_year 2001 _journal_page_first 1293 _journal_page_last 1301 _publ_section_title ; Carraraite and zaccagnaite, two new minerals from the Carrara marble quarries: their chemical compositions, physical properties and structural features ; _database_code_amcsd 0002735 _chemical_formula_sum '(Al.333 Zn.667) O5 C H2' _cell_length_a 3.0725 _cell_length_b 3.0725 _cell_length_c 15.114 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 120 _cell_volume 123.565 _exptl_crystal_density_diffrn 3.941 _symmetry_space_group_name_H-M 'P 63/m m c' loop_ _space_group_symop_operation_xyz 'x,y,z' '-x,-x+y,1/2+z' 'x,x-y,1/2-z' '-x+y,-x,1/2-z' 'x-y,x,1/2+z' '-y,-x,z' 'y,x,-z' 'y,-x+y,-z' '-y,x-y,z' 'x-y,-y,1/2+z' '-x+y,y,1/2-z' 'x,y,1/2-z' '-x,-y,1/2+z' 'x,x-y,z' '-x,-x+y,-z' 'x-y,x,-z' '-x+y,-x,z' 'y,x,1/2+z' '-y,-x,1/2-z' '-y,x-y,1/2-z' 'y,-x+y,1/2+z' '-x+y,y,z' 'x-y,-y,-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 Al 0.00000 0.00000 0.00000 0.33333 0.01100 Zn 0.00000 0.00000 0.00000 0.66667 0.01100 O1 0.33333 0.66667 0.06550 1.00000 0.01700 O2 0.24100 -0.24100 0.25000 1.00000 0.04000 C 0.00000 0.00000 0.25000 1.00000 0.01900 H 0.33333 0.66667 0.09900 1.00000 0.01000