Imgreite
      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 0011584

      CELL PARAMETERS:    3.9570   3.9570   5.3540   90.000   90.000  120.000
      SPACE GROUP: P6_3mc    
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     72.601
      Density (g/cm3):      8.521
      MAX. ABS. INTENSITY / VOLUME**2:      304.5597411    
      RIR:     11.639
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                30.98        100.00        2.8863    1   0   1         6
                33.47          3.81        2.6770    0   0   2         1
                42.87         55.33        2.1096    1   0   2         6
                45.87         49.07        1.9785    1   1   0         6
                56.38         15.78        1.6319    2   0   1         6
                57.96          4.21        1.5911    1   1   2         6
                58.29         14.09        1.5829    1   0   3         6
                64.58         13.93        1.4431    2   0   2         6
                70.33          3.81        1.3385    0   0   4         1
                75.52         11.67        1.2589    2   1   1        12
                77.18          5.44        1.2360    2   0   3         6
                82.78         12.08        1.1659    2   1   2        12
                84.89          6.25        1.1423    3   0   0         6
                88.11         11.29        1.1086    1   1   4         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.