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 = 1023 K
      _database_code_amcsd 0001404

      CELL PARAMETERS:    8.1323   8.1323   8.1323   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    537.834
      Density (g/cm3):      3.514
      MAX. ABS. INTENSITY / VOLUME**2:      17.59998016    
      RIR:      1.631
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                18.90         31.45        4.6952    1   1   1         8
                31.11         34.18        2.8752    2   2   0        12
                36.65        100.00        2.4520    3   1   1        24
                38.34          1.24        2.3476    2   2   2         8
                44.57         53.57        2.0331    4   0   0         6
                55.34          9.24        1.6600    4   2   2        24
                59.02          2.99        1.5651    3   3   3         8
                59.02         39.67        1.5651    5   1   1        24
                64.86         64.37        1.4376    4   4   0        12
                68.23          2.28        1.3746    5   3   1        48
                73.67          2.81        1.2858    6   2   0        24
                76.87          8.68        1.2402    5   3   3        24
                82.11          5.07        1.1738    4   4   4         8
                85.22          1.89        1.1388    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.