#------------------------------------------------------------------------------
#$Date$
#$Revision$
#$URL$
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#
# This file is available in the Crystallography Open Database (COD),
# http://www.crystallography.net/. The original data for this entry
# were provided the American Mineralogist Crystal Structure Database,
# http://rruff.geo.arizona.edu/AMS/amcsd.php
#
# The file may be used within the scientific community so long as
# proper attribution is given to the journal article from which the
# data were obtained.
#
data_9012889
loop_
_publ_author_name
'Burnham, C. W.'
_publ_section_title
;
 The crystal structure of pyroxferroite from Mare Tranquillitatis
 Locality: Apollo 11 microgabbro sample 10047, Mare Tranquillitatis, Moon
;
_journal_name_full
'Proceedings of the Second Lunar Science Conference'
_journal_page_first              47
_journal_page_last               57
_journal_volume                  1
_journal_year                    1971
_chemical_formula_sum            'Ca0.94 Fe6.06 O21 Si7'
_chemical_name_mineral           Pyroxferroite
_space_group_IT_number           2
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_cell_angle_alpha                114.267
_cell_angle_beta                 82.684
_cell_angle_gamma                94.576
_cell_length_a                   6.6213
_cell_length_b                   7.5506
_cell_length_c                   17.3806
_cell_volume                     785.349
_[local]_cod_data_source_file    13000.cif
_[local]_cod_data_source_block   global
_[local]_cod_chemical_formula_sum_orig 'Fe6.06 Ca.94 Si7 O21'
loop_
_symmetry_equiv_pos_as_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_occupancy
_atom_site_U_iso_or_equiv
FeM1 0.04310 0.45910 0.39530 1.00000 0.00811
FeM2 0.16040 0.33600 0.18870 0.92000 0.00760
CaM2 0.16040 0.33600 0.18870 0.08000 0.00760
FeM3 0.06630 0.43410 0.89630 1.00000 0.00836
FeM4 0.16260 0.30980 0.69450 0.96000 0.00925
CaM4 0.16260 0.30980 0.69450 0.04000 0.00925
FeM5 0.27100 0.22180 0.98920 0.72000 0.01558
CaM5 0.27100 0.22180 0.98920 0.28000 0.01558
FeM6 0.80860 0.83080 0.51700 0.81000 0.01887
CaM6 0.80860 0.83080 0.51700 0.19000 0.01887
FeM7 0.62260 0.86380 0.71110 0.65000 0.01418
CaM7 0.62260 0.86380 0.71110 0.35000 0.01418
Si1 0.24310 0.85510 0.56610 1.00000 0.00570
Si2 0.12620 0.95780 0.75000 1.00000 0.00532
Si3 0.32510 0.75440 0.83990 1.00000 0.00519
Si4 0.78430 0.13360 0.96730 1.00000 0.00557
Si5 0.58120 0.34190 0.87860 1.00000 0.00443
Si6 0.68200 0.23810 0.68840 1.00000 0.00747
Si7 0.49100 0.41190 0.58870 1.00000 0.00671
O-A1 0.05630 0.70040 0.52970 1.00000 0.00861
O-A2 0.06330 0.19600 0.27300 1.00000 0.00798
O-A3 0.15340 0.58170 0.81230 1.00000 0.00785
O-A4 0.03380 0.70690 0.01830 1.00000 0.00874
O-A5 0.24070 0.49380 0.10610 1.00000 0.00697
O-A6 0.13200 0.60770 0.30510 1.00000 0.00912
O-A7 0.34810 0.41670 0.39630 1.00000 0.00925
O-A8 0.25030 0.44170 0.59420 1.00000 0.01077
O-B1 0.17830 0.06280 0.57240 1.00000 0.01241
O-B2 0.07440 0.18200 0.77870 1.00000 0.00950
O-B3 0.54600 0.70600 0.79070 1.00000 0.01874
O-B4 0.84080 0.91000 0.92450 1.00000 0.01317
O-B5 0.35610 0.40660 0.92000 1.00000 0.01077
O-B6 0.73500 0.01640 0.63070 1.00000 0.01178
O-C1 0.28780 0.88660 0.66210 1.00000 0.00811
O-C2 0.25010 0.93670 0.82140 1.00000 0.01355
O-C3 0.34220 0.84450 0.94170 1.00000 0.01127
O-C4 0.62250 0.18030 0.91480 1.00000 0.01089
O-C5 0.58800 0.21960 0.77630 1.00000 0.00747
O-C6 0.49160 0.31460 0.65840 1.00000 0.00975
O-C7 0.54650 0.23170 0.49600 1.00000 0.01001