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 = 200 C
      _database_code_amcsd 0007400

      CELL PARAMETERS:    8.0586   8.0586   8.0586   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    523.334
      Density (g/cm3):      5.316
      MAX. ABS. INTENSITY / VOLUME**2:      79.17988458    
      RIR:      4.849
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                19.08         39.04        4.6526    1   1   1         8
                31.40          9.07        2.8491    2   2   0        12
                37.00        100.00        2.4298    3   1   1        24
                38.71         17.19        2.3263    2   2   2         8
                45.00         48.70        2.0147    4   0   0         6
                49.29         14.18        1.8488    3   3   1        24
                55.89          2.96        1.6450    4   2   2        24
                59.61          8.81        1.5509    3   3   3         8
                59.61         17.91        1.5509    5   1   1        24
                65.53         46.84        1.4246    4   4   0        12
                68.94          5.95        1.3622    5   3   1        48
                74.46          1.18        1.2742    6   2   0        24
                77.70          9.09        1.2289    5   3   3        24
                78.78          7.82        1.2149    6   2   2        24
                83.02          6.86        1.1632    4   4   4         8
                86.19          1.99        1.1284    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.