data_global
_chemical_name_mineral 'Breyite'
loop_
_publ_author_name
'Brenker F E'
'Nestola F'
'Brenker L'
'Peruzzo L'
'Harris J W'
_journal_name_full 'American Mineralogist'
_journal_volume 106 
_journal_year 2021
_journal_page_first 38
_journal_page_last 43
_publ_section_title
;
 Origin, properties, and structure of breyite:
 The second most abundant mineral inclusion in super-deep diamonds
;
_database_code_amcsd 0020946
_chemical_compound_source 'In a diamond from the Juina area, Mato Grosso State, Brazil'
_chemical_formula_sum 'Ca Si O3'
_cell_length_a 6.6970
_cell_length_b 9.2986
_cell_length_c 6.6501
_cell_angle_alpha 83.458
_cell_angle_beta 76.226
_cell_angle_gamma 69.581
_cell_volume 376.722
_exptl_crystal_density_diffrn      3.072
_symmetry_space_group_name_H-M 'P -1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '-x,-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
Ca1   0.75613   0.00066   0.73730   0.01300
Ca2   0.92091   0.33567   0.57443   0.01220
Ca3   0.27088   0.35134   0.91503   0.01480
Si1   0.47694   0.30162   0.45734   0.01080
Si2   0.72580   0.01583   0.22948   0.01040
Si3   0.83735   0.29427   0.10701   0.01090
O1   0.22960   0.40350   0.54230   0.01350
O2   0.61040   0.26450   0.64020   0.01360
O3   0.49560   0.13730   0.36310   0.01420
O4   0.65720   0.90600   0.11300   0.01330
O5   0.90020   0.93970   0.37210   0.01240
O6   0.80830   0.13590   0.04680   0.01310
O7   0.87960   0.40680   0.91340   0.01320
O8   0.02820   0.25710   0.23200   0.01340
O9   0.59760   0.38560   0.25520   0.01440
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
Ca1 0.01130 0.01650 0.01060 -0.00400 -0.00190 -0.00030
Ca2 0.01070 0.01770 0.00920 -0.00570 -0.00220 -0.00080
Ca3 0.01350 0.01710 0.01340 -0.00530 -0.00070 -0.00280
Si1 0.00780 0.01430 0.00960 -0.00270 -0.00150 -0.00100
Si2 0.00890 0.01440 0.00810 -0.00420 -0.00160 -0.00030
Si3 0.01020 0.01450 0.00770 -0.00440 -0.00140 0.00010
O1 0.00930 0.01910 0.01220 -0.00420 -0.00300 -0.00090
O2 0.01040 0.01920 0.01120 -0.00470 -0.00260 -0.00030
O3 0.01200 0.01930 0.01170 -0.00680 0.00040 -0.00290
O4 0.01250 0.01660 0.01160 -0.00500 -0.00320 -0.00150
O5 0.01140 0.01350 0.01070 -0.00080 -0.00370 -0.00220
O6 0.01440 0.01610 0.00810 -0.00490 -0.00100 -0.00150
O7 0.01610 0.01690 0.00830 -0.00820 -0.00240 0.00140
O8 0.01330 0.01900 0.00830 -0.00510 -0.00410 0.00070
O9 0.01220 0.01370 0.01220 -0.00170 0.00330 -0.00100