Spinel
      Peterson R C, Lager G A, Hitterman R L
      American Mineralogist 76 (1991) 1455-1458
      A time-of-flight neutron powder diffraction study of MgAl2O4 at temperatures
      up to 1273 K
      sample UC, T = 973 K
      _database_code_amcsd 0001403

      CELL PARAMETERS:    8.1287   8.1287   8.1287   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    537.114
      Density (g/cm3):      3.519
      MAX. ABS. INTENSITY / VOLUME**2:      17.67344291    
      RIR:      1.635
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                18.91         32.22        4.6931    1   1   1         8
                31.12         34.30        2.8739    2   2   0        12
                36.67        100.00        2.4509    3   1   1        24
                38.36          1.39        2.3466    2   2   2         8
                44.59         54.93        2.0322    4   0   0         6
                55.37          9.24        1.6593    4   2   2        24
                59.05         40.89        1.5644    5   1   1        24
                59.05          2.88        1.5644    3   3   3         8
                64.89         66.53        1.4370    4   4   0        12
                68.26          2.45        1.3740    5   3   1        48
                73.71          2.79        1.2853    6   2   0        24
                76.91          8.86        1.2396    5   3   3        24
                82.15          5.47        1.1733    4   4   4         8
                85.26          2.13        1.1382    5   5   1        24
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.