Violarite
      Vaughan D J, Craig J R
      American Mineralogist 70 (1985) 1036-1043
      The crystal chemistry of iron-nickel thiospinels
      Note: structure from ICSD
      _database_code_amcsd 0001000

      CELL PARAMETERS:    9.4650   9.4650   9.4650   90.000   90.000   90.000
      SPACE GROUP: Fd-3m     
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    847.934
      Density (g/cm3):      4.723
      MAX. ABS. INTENSITY / VOLUME**2:      67.00517916    
      RIR:      4.620
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                16.22         20.15        5.4646    1   1   1         8
                26.64         27.20        3.3464    2   2   0        12
                31.34        100.00        2.8538    3   1   1        24
                38.03         51.75        2.3663    4   0   0         6
                47.03          9.02        1.9320    4   2   2        24
                50.08         38.25        1.8215    5   1   1        24
                50.08          4.32        1.8215    3   3   3         8
                54.87         76.56        1.6732    4   4   0        12
                57.61          3.20        1.5999    5   3   1        48
                62.01          3.06        1.4965    6   2   0        24
                64.57          9.92        1.4434    5   3   3        24
                68.71          8.58        1.3662    4   4   4         8
                71.14          2.42        1.3254    5   5   1        24
                75.11          4.21        1.2648    6   4   2        48
                77.46          8.03        1.2322    5   5   3        24
                77.46          5.60        1.2322    7   3   1        48
                81.32          9.44        1.1831    8   0   0         6
                87.44          1.17        1.1155    8   2   2        24
                89.72          6.43        1.0929    7   5   1        48
                89.72          2.56        1.0929    5   5   5         8
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       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.