Ni2SiO4
      Yamanaka T
      Physics and Chemistry of Minerals 13 (1986) 227-232
      Crystal structures of Ni2SiO4 and Fe2SiO4 as a function of
      temperature and heating duration
      Sample: T = 400 C
      _database_code_amcsd 0007401

      CELL PARAMETERS:    8.0739   8.0739   8.0739   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    526.320
      Density (g/cm3):      5.286
      MAX. ABS. INTENSITY / VOLUME**2:      78.63208572    
      RIR:      4.843
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                19.04         39.01        4.6615    1   1   1         8
                31.34          9.00        2.8546    2   2   0        12
                36.92        100.00        2.4344    3   1   1        24
                38.63         17.28        2.3307    2   2   2         8
                44.91         49.03        2.0185    4   0   0         6
                49.19         14.44        1.8523    3   3   1        24
                55.78          2.88        1.6481    4   2   2        24
                59.49          8.82        1.5538    3   3   3         8
                59.49         17.81        1.5538    5   1   1        24
                65.39         46.83        1.4273    4   4   0        12
                68.79          6.14        1.3647    5   3   1        48
                74.30          1.12        1.2766    6   2   0        24
                77.53          9.05        1.2313    5   3   3        24
                78.60          7.94        1.2172    6   2   2        24
                82.83          6.99        1.1654    4   4   4         8
                85.98          2.08        1.1306    7   1   1        24
                85.98          1.01        1.1306    5   5   1        24
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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.