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 1001248
      _database_code_amcsd 0014311

      CELL PARAMETERS:    7.6322   7.6322   2.9191   90.000   90.000  120.000
      SPACE GROUP: P6_3/m    
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    147.258
      Density (g/cm3):      3.163
      MAX. ABS. INTENSITY / VOLUME**2:      13.99743038    
      RIR:      1.441
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                13.40         82.19        6.6097    1   0   0         6
                23.31         10.32        3.8161    1   1   0         6
                26.98         70.66        3.3048    2   0   0         6
                33.56        100.00        2.6703    1   0   1        12
                35.95          3.42        2.4982    1   2   0         6
                35.95         78.93        2.4982    2   1   0         6
                38.84         11.52        2.3185    1   1   1        12
                41.26         13.43        2.1878    2   0   1        12
                47.93          1.83        1.8980    2   1   1        12
                49.74         10.45        1.8332    1   3   0         6
                49.74          1.65        1.8332    3   1   0         6
                52.00         48.72        1.7586    3   0   1        12
                55.62          2.18        1.6524    4   0   0         6
                57.72         12.12        1.5971    2   2   1        12
                59.55          7.96        1.5524    3   1   1        12
                61.11          5.14        1.5164    2   3   0         6
                61.11          3.39        1.5164    3   2   0         6
                63.77         14.24        1.4596    0   0   2         2
                64.62          2.60        1.4424    1   4   0         6
                64.62          1.45        1.4424    4   1   0         6
                65.49          1.45        1.4252    1   0   2        12
                69.91         28.03        1.3456    2   3   1        12
                69.91         11.23        1.3456    3   2   1        12
                70.54          6.15        1.3351    2   0   2        12
                71.35          3.71        1.3219    5   0   0         6
                73.19          6.95        1.2931    4   1   1        12
                74.61         15.48        1.2720    3   3   0         6
                75.43          1.18        1.2602    1   2   2        12
                75.43         14.86        1.2602    2   1   2        12
                79.61          1.92        1.2042    5   0   1        12
                80.99          1.19        1.1871    1   5   0         6
                80.99          1.41        1.1871    5   1   0         6
                84.34          9.87        1.1484    2   4   1        12
                84.93          3.47        1.1418    1   3   2        12
                89.02          6.47        1.0997    5   1   1        12
                89.62          1.11        1.0939    4   0   2        12
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.