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: Duration time: 26-29 h
      _database_code_amcsd 0007412

      CELL PARAMETERS:    8.0868   8.0868   8.0868   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    528.847
      Density (g/cm3):      5.261
      MAX. ABS. INTENSITY / VOLUME**2:      73.49770200    
      RIR:      4.549
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                19.01         39.46        4.6689    1   1   1         8
                31.29          9.23        2.8591    2   2   0        12
                36.86        100.00        2.4383    3   1   1        24
                38.57         17.33        2.3345    2   2   2         8
                44.83         46.94        2.0217    4   0   0         6
                49.11         14.06        1.8552    3   3   1        24
                55.68          2.65        1.6507    4   2   2        24
                59.39          8.18        1.5563    3   3   3         8
                59.39         15.72        1.5563    5   1   1        24
                65.27         40.65        1.4296    4   4   0        12
                68.66          5.15        1.3669    5   3   1        48
                77.38          7.43        1.2332    5   3   3        24
                78.45          6.66        1.2191    6   2   2        24
                82.67          5.42        1.1672    4   4   4         8
                85.81          1.64        1.1324    7   1   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.