Gahnite
      D'Ippolito V, Andreozzi G B, Bosi F, Halenius U, Mantovani L, Bersani D, Fregola R A
      Mineralogical Magazine 77 (2013) 2941-2953
      Crystallographic and spectroscopic characterization of a natural Zn-rich spinel
      approaching the endmember gahnite (ZnAl2O4) composition
      Locality: Jemaa, Kaduna State, Nigeria
      _database_code_amcsd 0019968

      CELL PARAMETERS:    8.0850   8.0850   8.0850   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    528.494
      Density (g/cm3):      4.587
      MAX. ABS. INTENSITY / VOLUME**2:      56.67543486    
      RIR:      4.023
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                19.01          3.92        4.6679    1   1   1         8
                31.29         75.22        2.8585    2   2   0        12
                36.87        100.00        2.4377    3   1   1        24
                44.84          4.69        2.0213    4   0   0         6
                49.12          9.11        1.8548    3   3   1        24
                55.70         23.85        1.6503    4   2   2        24
                59.40          4.40        1.5560    3   3   3         8
                59.40         35.97        1.5560    5   1   1        24
                65.28         44.37        1.4292    4   4   0        12
                68.68          1.13        1.3666    5   3   1        48
                74.18          8.33        1.2784    6   2   0        24
                77.40         10.11        1.2330    5   3   3        24
                85.84          1.23        1.1321    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.