Nierite
      Billy M, Labbe J, Selvaraj A, Roult G
      Materials Research Bulletin 18 (1983) 921-934
      Modifications structurales du nitrure de silicium en fonction de la
      temperature
      _cod_database_code 1001247
      _database_code_amcsd 0014310

      CELL PARAMETERS:    7.6272   7.6272   2.9182   90.000   90.000  120.000
      SPACE GROUP: P6_3/m    
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    147.020
      Density (g/cm3):      3.168
      MAX. ABS. INTENSITY / VOLUME**2:      12.26657884    
      RIR:      1.261
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                13.40         59.21        6.6053    1   0   0         6
                23.33         25.63        3.8136    1   1   0         6
                27.00         85.94        3.3027    2   0   0         6
                33.57        100.00        2.6693    1   0   1        12
                35.97          2.24        2.4966    1   2   0         6
                35.97         92.71        2.4966    2   1   0         6
                38.86         10.17        2.3175    1   1   1        12
                40.99          1.39        2.2018    3   0   0         6
                41.28         26.33        2.1868    2   0   1        12
                47.69          4.58        1.9068    2   2   0         6
                47.95          2.86        1.8971    2   1   1        12
                49.77         12.11        1.8320    1   3   0         6
                52.03         47.31        1.7576    3   0   1        12
                57.76         12.42        1.5962    2   2   1        12
                59.58          4.18        1.5516    3   1   1        12
                61.16          6.25        1.5154    3   2   0         6
                61.16          7.37        1.5154    2   3   0         6
                63.79         16.28        1.4591    0   0   2         2
                64.67          3.39        1.4414    1   4   0         6
                64.67          2.50        1.4414    4   1   0         6
                64.88          2.30        1.4372    4   0   1        12
                68.90          1.54        1.3628    1   1   2        12
                69.95         38.08        1.3449    2   3   1        12
                69.95         11.46        1.3449    3   2   1        12
                70.57          7.55        1.3347    2   0   2        12
                71.40          6.26        1.3211    5   0   0         6
                73.24         16.68        1.2924    4   1   1        12
                74.67         12.08        1.2712    3   3   0         6
                75.46         17.48        1.2597    2   1   2        12
                79.67          2.27        1.2035    5   0   1        12
                81.06          1.32        1.1864    5   1   0         6
                83.41          1.69        1.1588    2   2   2        12
                84.40          5.97        1.1477    2   4   1        12
                84.98          4.04        1.1413    1   3   2        12
                89.09          6.57        1.0990    5   1   1        12
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.