Spinel
      Nestola F, Boffa Ballaran T, Balic-Zunic T, Princivalle F, Secco L, Dal Negro A
      American Mineralogist 92 (2007) 1838-1843
      Comparative compressibility and structural behavior of spinel MgAl2O4 at high
      pressures: the independency on the degree of cation order
      Locality: Sri Lanka
      Sample: P = 8.027 GPa, disordered
      _database_code_amcsd 0004475

      CELL PARAMETERS:    7.9874   7.9874   7.9874   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    509.585
      Density (g/cm3):      3.708
      MAX. ABS. INTENSITY / VOLUME**2:      19.91864559    
      RIR:      1.749
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                19.25         28.47        4.6115    1   1   1         8
                31.68         32.65        2.8240    2   2   0        12
                37.34        100.00        2.4083    3   1   1        24
                39.07          1.04        2.3058    2   2   2         8
                45.42         54.43        1.9969    4   0   0         6
                56.44          9.57        1.6304    4   2   2        24
                60.20          3.52        1.5372    3   3   3         8
                60.20         40.97        1.5372    5   1   1        24
                66.18         70.27        1.4120    4   4   0        12
                69.64          2.70        1.3501    5   3   1        48
                75.24          3.18        1.2629    6   2   0        24
                78.53         10.15        1.2181    5   3   3        24
                83.93          6.37        1.1529    4   4   4         8
                87.14          2.29        1.1185    5   5   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.