Xifengite
      Weill A R
      Nature 152 (1943) 413-413
      Structure of the eta phase of the iron-silicon system
      _database_code_amcsd 0014672

      CELL PARAMETERS:    6.7416   6.7416   4.7079   90.000   90.000  120.000
      SPACE GROUP: P6_3/mcm  
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    185.304
      Density (g/cm3):      6.514
      MAX. ABS. INTENSITY / VOLUME**2:      74.22537258    
      RIR:      3.711
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                26.44          6.19        3.3708    1   1   0         6
                30.63         13.55        2.9192    2   0   0         6
                32.67          8.38        2.7407    1   1   1        12
                38.23         10.94        2.3540    0   0   2         2
                40.90         46.86        2.2067    2   1   0        12
                41.36         32.40        2.1832    1   0   2        12
                45.39        100.00        1.9981    2   1   1        24
                46.67         26.92        1.9461    3   0   0         6
                47.09         63.17        1.9299    1   1   2        12
                49.76          3.44        1.8324    2   0   2        12
                54.44          1.21        1.6854    2   2   0         6
                56.86          3.06        1.6193    3   1   0        12
                58.13          7.27        1.5868    2   2   1        12
                60.46          1.36        1.5312    3   1   1        24
                61.86          1.77        1.4999    3   0   2        12
                63.76          1.98        1.4596    4   0   0         6
                68.47         14.83        1.3704    2   2   2        12
                70.28          1.09        1.3394    3   2   0        12
                70.60          2.36        1.3341    3   1   2        24
                73.51          5.11        1.2883    3   2   1        24
                74.14         18.43        1.2789    2   1   3        24
                74.47         11.68        1.2740    4   1   0        12
                76.85         11.54        1.2405    4   0   2        12
                81.84          5.90        1.1770    0   0   4         2
                82.63          3.09        1.1677    5   0   0         6
                82.94          1.99        1.1642    3   2   2        24
                84.32          2.12        1.1485    2   2   3        12
                88.65          1.38        1.1034    4   2   0        12
                89.72          2.20        1.0929    3   3   1        12
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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.