Pentlandite
      Tsukimura K, Nakazawa H, Endo T, Fukunaga O
      Physics and Chemistry of Minerals 19 (1992) 203-212
      Cation distribution in Pentlandites (Fe,Ni)9S8: dependence of pressure and
      temperature and kinetics of the cation exchange reaction
      Sample: Naturalb, Fe/(Fe+Ni) = .491, T = 293 K, P = 0 GPa
      Note: structure was not refined in this study
      _database_code_amcsd 0007724

      CELL PARAMETERS:   10.0510  10.0510  10.0510   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:   1015.378
      Density (g/cm3):      5.050
      MAX. ABS. INTENSITY / VOLUME**2:      77.38397456    
      RIR:      4.989
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                15.27         38.47        5.8029    1   1   1         8
                17.65          5.75        5.0255    2   0   0         6
                25.06          4.80        3.5536    2   2   0        12
                29.47         94.66        3.0305    3   1   1        24
                30.82         20.77        2.9015    2   2   2         8
                35.73          7.84        2.5127    4   0   0         6
                39.06         10.00        2.3059    3   3   1        24
                40.12          2.54        2.2475    4   2   0        24
                44.14          1.88        2.0517    4   2   2        24
                46.97         23.42        1.9343    5   1   1        24
                46.97          7.81        1.9343    3   3   3         8
                51.43        100.00        1.7768    4   4   0        12
                53.97          6.98        1.6989    5   3   1        48
                60.39          9.80        1.5328    5   3   3        24
                61.16          5.80        1.5152    6   2   2        24
                64.20          1.69        1.4507    4   4   4         8
                66.43          1.66        1.4074    7   1   1        24
                66.43          1.66        1.4074    5   5   1        24
                72.19         10.30        1.3085    7   3   1        48
                72.19          5.15        1.3085    5   5   3        24
                75.70         12.82        1.2564    8   0   0         6
                83.25          1.07        1.1606    5   5   5         8
                83.25          6.39        1.1606    7   5   1        48
                83.93          2.15        1.1529    6   6   2        24
                86.63          1.64        1.1237    8   4   0        24
                88.66          1.28        1.1032    7   5   3        48
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.