Halite
      Wyckoff R W G
      Crystal Structures 1 (1963) 85-237
      Second edition. Interscience Publishers, New York, New York
      rocksalt structure
      _database_code_amcsd 0011356

      CELL PARAMETERS:    5.6406   5.6406   5.6406   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    179.460
      Density (g/cm3):      2.163
      MAX. ABS. INTENSITY / VOLUME**2:      30.20309685    
      RIR:      4.547
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                27.39          8.77        3.2566    1   1   1         8
                31.73        100.00        2.8203    2   0   0         6
                45.48         61.01        1.9942    2   2   0        12
                53.91          2.21        1.7007    3   1   1        24
                56.52         18.23        1.6283    2   2   2         8
                66.28          7.42        1.4101    4   0   0         6
                73.13          1.06        1.2940    3   3   1        24
                75.36         18.39        1.2613    4   2   0        24
                84.07         12.69        1.1514    4   2   2        24
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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.