Structure of pyrrhotite 5<i>C</i> (Fe~9~S~10~)
Elliot, Alexander Dean; Acta Crystallographica Section B 66 (2010) 271–279; doi:10.1107/S0108768110011845

data_2104735
_publ_section_title
;
 Structure of pyrrhotite 5<i>C</i> (Fe~9~S~10~)
;
_journal_coeditor_code           KD5037
_journal_issue                   3
_journal_name_full               'Acta Crystallographica Section B'
_journal_page_first              271
_journal_page_last               279
_journal_paper_doi               10.1107/S0108768110011845
_journal_volume                  66
_journal_year                    2010
_chemical_compound_source        'Renison Bell tin mine, Tasmania, Australia'
_chemical_formula_structural     'Fe9 S10'
_chemical_formula_sum            'Fe9 S10'
_chemical_formula_weight         823.255
_chemical_name_common            'Pyrrhotite 5C'
_chemical_name_mineral           'Pyrrhotite 5C'
_chemical_name_structure_type    Pyrrhotite
_chemical_name_systematic
;
nona iron deca sulphide
;
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_cell_angle_alpha                90
_cell_angle_beta                 119.9561(21)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   6.89268(16)
_cell_length_b                   28.67214(34)
_cell_length_c                   6.88520(8)
_cell_measurement_temperature    299
_cell_volume                     1178.93(4)
_computing_cell_refinement
'TOPAS R3 (Bruker AXS, 2005) and PLATON (Spek, 2003)'
_diffrn_ambient_temperature      299
_diffrn_detector                 'CCD plate'
_diffrn_detector_area_resol_mean 20
_diffrn_detector_type            'MYTHEN microstrip detector'
_diffrn_measurement_device_type  'MYTHEN microstrip detector'
_diffrn_radiation_monochromator  'Si 111'
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           Synchrotron
_diffrn_radiation_wavelength     0.825218(1)
_diffrn_source                   Synchrotron
_diffrn_source_type
;
10-BM-1 Powder Diffraction beamline, Australian Synchrotron
;
_exptl_absorpt_coefficient_mu    18.9130(7)
_exptl_absorpt_correction_type   none
_exptl_crystal_density_diffrn    4.63842(17)
_pd_block_id                     2010-05-13T02:13|Pyrrhotite5Ca2|A.Elliot|5Ca3
_pd_char_colour                  black
_pd_char_particle_morphology
;
Ruller aided visual measurements.
Dimensions of massive Renison Bell pyrrhotite rock: 
length 80mm, width 65mm, height 70mm.
Dimensions of tablet cut from drill core of massive rock: 
diameter 12mm, height 2mm.
;
_pd_instr_dist_spec/detc         761.2
_pd_instr_location
;
Powder Diffraction Beamline at the Australian Synchrotron 
;
_pd_meas_number_of_points        61115
_pd_meas_scan_method             fixed
_pd_proc_2theta_range_max        85.31435
_pd_proc_2theta_range_min        5.00529
_pd_proc_ls_background_function
;
Backgrounds were fit with a 5 component Chebychev Polynomial function 
combined with broad pseudo-Voigt functions
For LaB6 standard
    bkg  @  602.493775`_2.1866054 -261.726426`_3.74764315  
    34.8759451`_2.69985879  20.5946328`_1.70849653 
    -29.5687303`_1.0569904
    PV( area1, posn1, width1, !shape1, 8757.89718`_114.78248,  
    12.76414`_0.03023 min 10 max 15,  
    8.47738`_0.08017_LIMIT_MAX_10 min 1 max 10,  1)
    PV( area2, posn2, width2, !shape2, 
    891.65481`_47.65661_LIMIT_MIN_1e-005,  
    36.22517`_0.14652_LIMIT_MIN_30 min 30 max 40,  
    10.09202`_0.41448_LIMIT_MIN_1e-005 min 1 max 15,  1)
    PV( area3, posn3, width3, !shape3, 
    230.95156`_21.87784_LIMIT_MIN_1e-005,  
    8.07977`_0.04082_LIMIT_MIN_7 min 7 max 9,  
    1.44091`_0.11238_LIMIT_MIN_1e-005 min 0.1 max 3,  1)
For Pyrrhotite Sample
    bkg  @  7006.79482`_363.145439 -3844.41716`_580.030184  
    1810.10288`_370.704521 -901.387583`_174.285545  
    160.253551`_46.7025087
    PV( area4, posn4, width4, shape4, 217707.56752`_53039.74329,  
    5.77140`_0.18877 min 5 max 8,  13.39231`_1.06662 min 5 max 
    15, 0.20762`_0.11852 min 0 max 1)
    PV( area5, posn5, width5, shape5, 53897.90789`_5839.85256,  
    13.02314`_0.05451 min 10 max 15,  7.34202`_0.21074 min 5 
    max 15, 0.47600`_0.07845 min 0 max 1)
    PV( area6, posn6, width6, shape6, 17912.76765`_3048.36682,  
    39.32441`_0.10787 min 35 max 43,  15.33104`_0.59451 min 5 
    max 20, 0.83787`_0.16814_LIMIT_MAX_1 min 0 max 1 )
;
_pd_proc_ls_peak_cutoff          0.00001
_pd_proc_ls_profile_function
;
Source
Emission profile is a voigt with Lorentzian HW (lh) and Gaussian HW (lg)
    la 1 lo @  0.825218`_1.98339275e-007 min 0.8252 
    max 0.8253 lh   @  0.0066`_0.00118705496 lg   @  0.1162`_0.00174424553
Instrument
User_Defined_Dependence_Convolution functions,
 namely hat and one_on_x_conv constant with 2theta and a 
 one_on_x_conv varying with Sin(2theta)
    User_Defined_Dependence_Convolution(hat, , @, 
    0.00370`_0.00018_LIMIT_MIN_0.0001)
    User_Defined_Dependence_Convolution(one_on_x_conv, 
    Sin(2 Th), @, -0.02182`_0.00014 max 0)
    User_Defined_Dependence_Convolution(one_on_x_conv, , 
    @, -0.01335`_0.00005 max 0)
Finger et al Instrument Convolution
    Finger_et_al(Comon4  4.85960227`_0.0331336337 min 0.0001 max 
    10,Comon5  11.9495607`_0.0379741747 min 5 max 15)
Phase
Crystallite size and strain modelled with Lorentzian and 
Gaussian component convolutions
For the more highly crystalline 5Ca3
    CS_L(cspyrrhotite5H, 805.52947`_29.76426 
    min =800; max =10000;)
    Strain_L(spyrrhotite5H, 0.08048`_0.00188 min 0.0001 
    max 0.2)
    CS_G(cspyrrhotite5H, 805.52947`_29.76426_LIMIT_MIN_800 
    min =800; max =10000;)
;
_pd_proc_ls_prof_R_factor        0.02358
_pd_proc_ls_prof_wR_expected     0.01165
_pd_proc_ls_prof_wR_factor       0.03369
_pd_proc_wavelength              0.825218(1)
_pd_spec_mounting
;
glass capillary
;
_pd_spec_mount_mode              transmission
_pd_spec_preparation
;
Ball milled followed by wet micronizing in ethanol. Sample crudely 
mixed with roughly 5wt% silicon standard (not quantitative) in small 
portions sufficient to fill capillaries.
;
_pd_spec_shape                   cylinder
_pd_spec_size_axial              70
_pd_spec_size_equat              0.5
_pd_spec_size_thick              0.5
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_all   2.891
_refine_ls_number_constraints    60
_refine_ls_number_parameters     117
_refine_ls_number_reflns         5559
_refine_ls_number_restraints     76
_refine_ls_R_I_factor            0.01982
_refine_ls_weighting_scheme      sigma
_cod_data_source_file            kd5037.cif
_cod_data_source_block           Pyrrhotite_5C_a3
_cod_original_cell_volume        1178.928(43)
_cod_database_code               2104735