Gahnite
      Levy D, Pavese A, Sani A, Pischedda V
      Physics and Chemistry of Minerals 28 (2001) 612-618
      Structure and compressibility of synthetic ZnAl2O4 (gahnite) under
      high-pressure conditions, from synchrotron X-ray powder diffraction
      Sample: P = 21.0 GPa
      _database_code_amcsd 0008621

      CELL PARAMETERS:    7.8837   7.8837   7.8837   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    489.993
      Density (g/cm3):      4.971
      MAX. ABS. INTENSITY / VOLUME**2:      60.84329878    
      RIR:      3.986
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                19.50          4.92        4.5517    1   1   1         8
                32.11         78.29        2.7873    2   2   0        12
                37.85        100.00        2.3770    3   1   1        24
                46.05          3.63        1.9709    4   0   0         6
                50.46          9.35        1.8086    3   3   1        24
                57.25         23.30        1.6093    4   2   2        24
                61.08          4.25        1.5172    3   3   3         8
                61.08         33.76        1.5172    5   1   1        24
                67.17         39.63        1.3937    4   4   0        12
                70.69          1.23        1.3326    5   3   1        48
                76.41          7.81        1.2465    6   2   0        24
                79.77          9.27        1.2023    5   3   3        24
                88.59          1.14        1.1039    7   1   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.