Gahnite
      Popovic J, Tkalcec E, Grzeta B, Kurajica S, Rakvin B
      American Mineralogist 94 (2009) 771-776
      Inverse spinel structure of Co-doped gahnite
      Note: Sample S3, inversion parameter = .054, (Zn.88Co.12)Al2O4
      _database_code_amcsd 0004942

      CELL PARAMETERS:    8.0897   8.0897   8.0897   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    529.416
      Density (g/cm3):      4.581
      MAX. ABS. INTENSITY / VOLUME**2:      54.56478489    
      RIR:      3.878
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                19.00          3.16        4.6706    1   1   1         8
                31.27         72.39        2.8601    2   2   0        12
                36.85        100.00        2.4391    3   1   1        24
                44.81          5.94        2.0224    4   0   0         6
                49.09          7.48        1.8559    3   3   1        24
                55.66         21.67        1.6513    4   2   2        24
                59.36          4.23        1.5569    3   3   3         8
                59.36         34.13        1.5569    5   1   1        24
                65.24         43.44        1.4301    4   4   0        12
                74.13          7.11        1.2791    6   2   0        24
                77.35          9.19        1.2337    5   3   3        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.