Nickeline
      Wyckoff R W G
      Crystal Structures 1 (1963) 85-237
      Second edition. Interscience Publishers, New York, New York
      Note: ideal nickel arsenide structure
      _database_code_amcsd 0011580

      CELL PARAMETERS:    3.6020   3.6020   5.0090   90.000   90.000  120.000
      SPACE GROUP: P6_3mc    
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     56.282
      Density (g/cm3):      7.883
      MAX. ABS. INTENSITY / VOLUME**2:      161.2908793    
      RIR:      6.662
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                28.62         12.54        3.1194    1   0   0         6
                33.85        100.00        2.6479    1   0   1         6
                46.50         92.40        1.9529    1   0   2         6
                50.69         66.29        1.8010    1   1   0         6
                59.24          1.14        1.5597    2   0   0         6
                62.35         15.26        1.4892    2   0   1         6
                63.16         14.62        1.4721    1   0   3         6
                71.22         21.74        1.3240    2   0   2         6
                76.00          5.64        1.2522    0   0   4         1
                84.40          3.95        1.1477    2   1   1        12
                85.12          5.80        1.1398    2   0   3         6
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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.