Spinel
      Ishii M, Hiraishi J, Yamanaka T
      Physics and Chemistry of Minerals 8 (1982) 64-68
      Structure and lattice vibrations of Mg-Al spinel solid solution
      Sample: Nonstoichiometric MgO.3Al2O3
      _database_code_amcsd 0007350

      CELL PARAMETERS:    8.0878   8.0878   8.0878   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    529.043
      Density (g/cm3):      3.476
      MAX. ABS. INTENSITY / VOLUME**2:      10.13127142    
      RIR:      0.949
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                19.01         45.58        4.6695    1   1   1         8
                31.28         36.64        2.8595    2   2   0        12
                36.86        100.00        2.4386    3   1   1        24
                44.83         38.59        2.0220    4   0   0         6
                55.67          4.76        1.6509    4   2   2        24
                59.38          2.03        1.5565    3   3   3         8
                59.38         18.03        1.5565    5   1   1        24
                65.26         21.89        1.4297    4   4   0        12
                68.65          1.07        1.3671    5   3   1        48
                77.37          2.35        1.2334    5   3   3        24
                78.44          1.10        1.2193    6   2   2        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.