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 1001246
      _database_code_amcsd 0014309

      CELL PARAMETERS:    7.6170   7.6170   2.9134   90.000   90.000  120.000
      SPACE GROUP: P6_3/m    
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    146.386
      Density (g/cm3):      3.182
      MAX. ABS. INTENSITY / VOLUME**2:      11.49355208    
      RIR:      1.176
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                13.42         39.36        6.5965    1   0   0         6
                23.36         38.52        3.8085    1   1   0         6
                27.03        100.00        3.2983    2   0   0         6
                33.63         99.51        2.6650    1   0   1        12
                36.02          1.73        2.4932    1   2   0         6
                36.02         90.74        2.4932    2   1   0         6
                38.92          9.96        2.3140    1   1   1        12
                41.05          2.36        2.1988    3   0   0         6
                41.35         37.36        2.1835    2   0   1        12
                47.76          9.72        1.9043    2   2   0         6
                48.03          4.17        1.8943    2   1   1        12
                49.84         12.03        1.8295    1   3   0         6
                52.11         43.54        1.7551    3   0   1        12
                57.85         11.67        1.5940    2   2   1        12
                59.68          2.46        1.5494    1   3   1        12
                59.68          1.73        1.5494    3   1   1        12
                61.25          7.66        1.5133    3   2   0         6
                61.25          8.80        1.5133    2   3   0         6
                63.91         17.41        1.4567    0   0   2         2
                64.76          2.72        1.4395    1   4   0         6
                64.76          3.25        1.4395    4   1   0         6
                64.98          4.08        1.4352    4   0   1        12
                69.03          2.38        1.3606    1   1   2        12
                70.06         42.79        1.3430    2   3   1        12
                70.06         10.58        1.3430    3   2   1        12
                70.70          8.76        1.3325    2   0   2        12
                71.51          7.27        1.3193    5   0   0         6
                73.36         23.46        1.2905    4   1   1        12
                74.78          9.20        1.2695    3   3   0         6
                75.60         17.27        1.2578    2   1   2        12
                79.80          2.01        1.2018    5   0   1        12
                81.19          1.22        1.1848    5   1   0         6
                83.57          3.55        1.1570    2   2   2        12
                84.54          2.90        1.1461    2   4   1        12
                85.14          4.04        1.1396    1   3   2        12
                89.25          4.61        1.0975    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.