data_global _chemical_name_mineral 'Strontiopiemontite' loop_ _publ_author_name 'Bonazzi P' 'Menchetti S' 'Palenzona A' _journal_name_full 'European Journal of Mineralogy' _journal_volume 2 _journal_year 1990 _journal_page_first 519 _journal_page_last 523 _publ_section_title ; Strontiopiemontite, a new member of the epidote group, from Val Graveglia, Liguria, Italy Sample: SRPC ; _database_code_amcsd 0006387 _chemical_compound_source 'Val Graveglia, Liguria, Italy' _chemical_formula_sum '(Ca1.38 Sr.62) Si3 Al1.74 Mn.94 Fe.32 O13 H' _cell_length_a 8.870 _cell_length_b 5.681 _cell_length_c 10.209 _cell_angle_alpha 90 _cell_angle_beta 114.88 _cell_angle_gamma 90 _cell_volume 466.692 _exptl_crystal_density_diffrn 3.696 _symmetry_space_group_name_H-M 'P 1 21/m 1' loop_ _space_group_symop_operation_xyz 'x,y,z' 'x,1/2-y,z' '-x,1/2+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 CaA1 0.76060 0.75000 0.15590 0.97000 0.01420 SrA1 0.76060 0.75000 0.15590 0.03000 0.01420 CaA2 0.59540 0.75000 0.42330 0.41000 0.01520 SrA2 0.59540 0.75000 0.42330 0.59000 0.01520 Si1 0.34030 0.75000 0.04200 1.00000 0.00830 Si2 0.68490 0.25000 0.27830 1.00000 0.00970 Si3 0.18110 0.75000 0.31560 1.00000 0.00990 AlM1 0.00000 0.00000 0.00000 0.72000 0.01040 MnM1 0.00000 0.00000 0.00000 0.25000 0.01040 FeM1 0.00000 0.00000 0.00000 0.03000 0.01040 AlM2 0.00000 0.00000 0.50000 1.00000 0.01000 AlM3 0.29400 0.25000 0.21980 0.02000 0.00970 MnM3 0.29400 0.25000 0.21980 0.69000 0.00970 FeM3 0.29400 0.25000 0.21980 0.29000 0.00970 O1 0.23400 0.99010 0.03540 1.00000 0.01480 O2 0.30130 0.97820 0.35110 1.00000 0.00970 O3 0.79540 0.01550 0.34210 1.00000 0.01190 O4 0.05800 0.25000 0.13120 1.00000 0.00700 O5 0.04070 0.75000 0.14600 1.00000 0.01090 O6 0.06500 0.75000 0.40320 1.00000 0.01260 O7 0.51450 0.75000 0.17430 1.00000 0.01950 O8 0.52340 0.25000 0.31180 1.00000 0.01510 O9 0.62920 0.25000 0.10240 1.00000 0.01900 O10 0.08230 0.25000 0.43090 1.00000 0.01110 H 0.03500 0.25000 0.33500 1.00000 0.05400