PON
      Leger J M, Haines J, Chateau C, Bocquillon G, Schmidt M W, Hull S,
      Gorelli F, Lesauze A, Marchand R
      Physics and Chemistry of Minerals 28 (2001) 388-398
      Phosphorus oxynitride PON, a silica analogue: structure and compression
      of the cristobalite-like phase; P-T phase diagram
      Note: quartz structure type
      _database_code_amcsd 0008558

      CELL PARAMETERS:    4.7570   4.7570   5.2460   90.000   90.000  120.000
      SPACE GROUP: P3_221    
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    102.808
      Density (g/cm3):      2.954
      MAX. ABS. INTENSITY / VOLUME**2:      39.80633587    
      RIR:      4.387
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                21.57         19.01        4.1197    1   0   0         6
                27.53         30.85        3.2400    1   0   1         6
                27.53         69.15        3.2400    0   1   1         6
                37.82          7.75        2.3785    1   1   0         3
                40.78          7.50        2.2126    1   0   2         6
                41.69          3.31        2.1662    1   1   1         6
                43.96          6.61        2.0598    2   0   0         6
                47.42          1.28        1.9173    2   0   1         6
                51.89         12.01        1.7620    1   1   2         6
                56.83          2.14        1.6200    0   2   2         6
                57.23          1.59        1.6097    0   1   3         6
                62.19          4.51        1.4927    2   1   1         6
                62.19          5.30        1.4927    1   2   1         6
                66.35          1.55        1.4089    1   1   3         6
                70.31          4.32        1.3389    1   2   2         6
                70.31          1.47        1.3389    2   1   2         6
                70.66          1.47        1.3331    0   2   3         6
                70.66          5.40        1.3331    2   0   3         6
                70.94          4.03        1.3285    0   3   1         6
                76.18          1.92        1.2497    1   0   4         6
                78.64          2.04        1.2166    3   0   2         6
                83.05          2.08        1.1629    2   1   3         6
                84.33          2.37        1.1485    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.