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 = 20 C
      _database_code_amcsd 0007399

      CELL PARAMETERS:    8.0454   8.0454   8.0454   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    520.766
      Density (g/cm3):      5.343
      MAX. ABS. INTENSITY / VOLUME**2:      80.43871239    
      RIR:      4.902
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                19.11         38.95        4.6450    1   1   1         8
                31.45          9.02        2.8445    2   2   0        12
                37.06        100.00        2.4258    3   1   1        24
                38.77         17.20        2.3225    2   2   2         8
                45.07         49.10        2.0113    4   0   0         6
                49.38         14.30        1.8457    3   3   1        24
                55.99          2.99        1.6423    4   2   2        24
                59.72          8.93        1.5483    3   3   3         8
                59.72         18.24        1.5483    5   1   1        24
                65.65         47.94        1.4222    4   4   0        12
                69.07          6.16        1.3599    5   3   1        48
                74.61          1.20        1.2721    6   2   0        24
                77.86          9.39        1.2269    5   3   3        24
                78.93          8.07        1.2129    6   2   2        24
                83.19          7.20        1.1613    4   4   4         8
                86.36          2.09        1.1266    7   1   1        24
                86.36          1.02        1.1266    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.