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 = 7.34 GPa, ordered
      _database_code_amcsd 0004468

      CELL PARAMETERS:    7.9996   7.9996   7.9996   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    511.923
      Density (g/cm3):      3.691
      MAX. ABS. INTENSITY / VOLUME**2:      19.09729035    
      RIR:      1.685
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                19.22         34.63        4.6186    1   1   1         8
                31.64         33.87        2.8283    2   2   0        12
                37.28        100.00        2.4120    3   1   1        24
                39.00          1.03        2.3093    2   2   2         8
                45.35         56.36        1.9999    4   0   0         6
                56.34          8.99        1.6329    4   2   2        24
                60.10          2.90        1.5395    3   3   3         8
                60.10         43.60        1.5395    5   1   1        24
                66.07         69.95        1.4141    4   4   0        12
                69.52          3.33        1.3522    5   3   1        48
                75.11          2.67        1.2648    6   2   0        24
                78.39          9.84        1.2199    5   3   3        24
                83.77          6.56        1.1546    4   4   4         8
                86.98          2.95        1.1202    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.