Spinel
Diffraction data computed using the structure from the paper listed below,
along with the cell parameters refined from the powder pattern for R050411
      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 W, T = 293 K

      CELL PARAMETERS:   8.087185   8.087185   8.087185   90.00000   90.00000   90.00000
      ALTERNATE SETTING FOR SPACE GROUP: Fd3m
      X-RAY WAVELENGTH:     1.541838
               2-THETA      INTENSITY    D-SPACING   H   K   L
                19.03         28.48        4.6691    1   1   1
                31.29         33.56        2.8593    2   2   0
                36.86        100.00        2.4384    3   1   1
                38.56          1.51        2.3346    2   2   2
                44.82         55.12        2.0218    4   0   0
                55.66          9.96        1.6508    4   2   2
                59.36          3.28        1.5564    3   3   3
                59.36         41.81        1.5564    5   1   1
                65.24         71.72        1.4296    4   4   0
                68.63          2.31        1.3670    5   3   1
                74.12          3.33        1.2787    6   2   0
                77.34          9.91        1.2333    5   3   3
                82.62          6.13        1.1673    4   4   4
                85.75          2.14        1.1324    5   5   1
                85.75          2.14        1.1324    5   5   1
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.