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 S6, inversion parameter = .095, (Zn.5Co.5)Al2O4
      _database_code_amcsd 0004944

      CELL PARAMETERS:    8.0928   8.0928   8.0928   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    530.025
      Density (g/cm3):      4.514
      MAX. ABS. INTENSITY / VOLUME**2:      50.18703850    
      RIR:      3.620
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                18.99          1.38        4.6724    1   1   1         8
                31.26         67.64        2.8612    2   2   0        12
                36.84        100.00        2.4401    3   1   1        24
                44.80          8.00        2.0232    4   0   0         6
                49.07          5.91        1.8566    3   3   1        24
                55.64         19.88        1.6519    4   2   2        24
                59.34          4.16        1.5575    3   3   3         8
                59.34         33.42        1.5575    5   1   1        24
                65.21         43.75        1.4306    4   4   0        12
                74.09          6.45        1.2796    6   2   0        24
                77.31          8.85        1.2341    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.