data_global _chemical_name_mineral 'Chiappinoite-(Y)' loop_ _publ_author_name 'Kampf A R' 'Housley R M' _journal_name_full 'European Journal of Mineralogy' _journal_volume 27 _journal_year 2015 _journal_page_first 91 _journal_page_last 97 _publ_section_title ; Chiappinoite-(Y), Y2Mn(Si3O7)4, a new layer silicate found in peralkaline syenitic ejecta from the Agua de Pau volcano, Azores ; _database_code_amcsd 0020339 _chemical_compound_source 'Agua de Pau volcano, San Miguel Island, Azores District, Portugal' _chemical_formula_sum 'Y1.17 Ce.18 Dy.1 Na.1 Nd.09 Er.08 La.07 Gd.07 Yb.06 Sm.03 Pr.02 Mn.61 Ca.25 Fe.09 Si12 O28' _cell_length_a 7.5549 _cell_length_b 15.2342 _cell_length_c 19.6418 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 2260.631 _exptl_crystal_density_diffrn 3.074 _symmetry_space_group_name_H-M 'I b a m' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2+y,1/2+z' 'x,-y,1/2+z' '1/2+x,1/2-y,+z' '-x,y,1/2-z' '1/2-x,1/2+y,-z' '-x,y,1/2+z' '1/2-x,1/2+y,+z' 'x,-y,1/2-z' '1/2+x,1/2-y,-z' 'x,y,-z' '1/2+x,1/2+y,1/2-z' '-x,-y,z' '1/2-x,1/2-y,1/2+z' '-x,-y,-z' '1/2-x,1/2-y,1/2-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 Y 0.00000 0.22900 0.25000 0.58500 0.00779 Ce 0.00000 0.22900 0.25000 0.09000 0.00779 Dy 0.00000 0.22900 0.25000 0.05000 0.00779 Na 0.00000 0.22900 0.25000 0.05000 0.00779 Nd 0.00000 0.22900 0.25000 0.04500 0.00779 Er 0.00000 0.22900 0.25000 0.04000 0.00779 La 0.00000 0.22900 0.25000 0.03500 0.00779 Gd 0.00000 0.22900 0.25000 0.03500 0.00779 Yb 0.00000 0.22900 0.25000 0.03000 0.00779 Sm 0.00000 0.22900 0.25000 0.01500 0.00779 Pr 0.00000 0.22900 0.25000 0.01000 0.00779 Mn 0.00000 0.00000 0.25000 0.61000 0.01190 Ca 0.00000 0.00000 0.25000 0.25000 0.01190 Fe 0.00000 0.00000 0.25000 0.09000 0.01190 Si1 0.25889 0.07589 0.35271 1.00000 0.00901 Si2 0.14882 0.37659 0.35242 1.00000 0.00910 Si3 0.17597 0.13038 0.50000 1.00000 0.01060 Si4 0.26475 0.33083 0.50000 1.00000 0.00980 O1 0.09100 0.10917 0.31185 1.00000 0.01420 O2 0.23510 0.29947 0.30893 1.00000 0.01260 O3 0.43720 0.13088 0.33201 1.00000 0.01330 O4 0.21590 0.47368 0.33012 1.00000 0.01410 O5 0.24010 0.07713 0.43434 1.00000 0.01730 O6 0.16540 0.36742 0.43380 1.00000 0.01890 O7 0.26410 0.22602 0.50000 1.00000 0.02860 O8 0.46520 0.36300 0.50000 1.00000 0.03240 loop_ _atom_site_aniso_label _atom_site_aniso_U_11 _atom_site_aniso_U_22 _atom_site_aniso_U_33 _atom_site_aniso_U_12 _atom_site_aniso_U_13 _atom_site_aniso_U_23 Y 0.00617 0.00770 0.00952 0.00000 -0.00069 0.00000 Ce 0.00617 0.00770 0.00952 0.00000 -0.00069 0.00000 Dy 0.00617 0.00770 0.00952 0.00000 -0.00069 0.00000 Na 0.00617 0.00770 0.00952 0.00000 -0.00069 0.00000 Nd 0.00617 0.00770 0.00952 0.00000 -0.00069 0.00000 Er 0.00617 0.00770 0.00952 0.00000 -0.00069 0.00000 La 0.00617 0.00770 0.00952 0.00000 -0.00069 0.00000 Gd 0.00617 0.00770 0.00952 0.00000 -0.00069 0.00000 Yb 0.00617 0.00770 0.00952 0.00000 -0.00069 0.00000 Sm 0.00617 0.00770 0.00952 0.00000 -0.00069 0.00000 Pr 0.00617 0.00770 0.00952 0.00000 -0.00069 0.00000 Mn 0.01480 0.00810 0.01280 0.00000 0.00000 0.00000 Ca 0.01480 0.00810 0.01280 0.00000 0.00000 0.00000 Fe 0.01480 0.00810 0.01280 0.00000 0.00000 0.00000 Si1 0.00890 0.00920 0.00900 0.00110 -0.00100 -0.00030 Si2 0.01000 0.00880 0.00850 0.00060 -0.00060 -0.00070 Si3 0.01140 0.01160 0.00890 0.00280 0.00000 0.00000 Si4 0.00960 0.01030 0.00930 -0.00090 0.00000 0.00000 O1 0.01110 0.01560 0.01570 0.00120 -0.00240 0.00420 O2 0.01370 0.01030 0.01390 0.00000 0.00160 -0.00250 O3 0.01070 0.01400 0.01540 0.00010 -0.00140 0.00060 O4 0.01780 0.01010 0.01450 -0.00110 -0.00050 -0.00050 O5 0.02280 0.01890 0.01030 0.00250 0.00020 -0.00120 O6 0.02160 0.02480 0.01040 0.00470 -0.00220 -0.00010 O7 0.04000 0.01290 0.03280 0.00060 0.00000 0.00000 O8 0.01230 0.05000 0.03490 -0.01030 0.00000 0.00000