Hercynite
      Lavina B, Princivalle F, Della Giusta A
      Physics and Chemistry of Minerals 32 (2005) 83-88
      Controlled time-temperature oxidation reaction in a synthetic Mg-hercynite
      Spinel structure
      Sample: Unannealed
      _database_code_amcsd 0008938

      CELL PARAMETERS:    8.1396   8.1396   8.1396   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    539.274
      Density (g/cm3):      4.008
      MAX. ABS. INTENSITY / VOLUME**2:      33.36692788    
      RIR:      2.711
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                18.88          1.38        4.6994    1   1   1         8
                31.08         55.64        2.8778    2   2   0        12
                36.62        100.00        2.4542    3   1   1        24
                44.52         19.36        2.0349    4   0   0         6
                48.77          3.17        1.8674    3   3   1        24
                55.29         15.90        1.6615    4   2   2        24
                58.96          3.71        1.5665    3   3   3         8
                58.96         38.06        1.5665    5   1   1        24
                64.79         52.93        1.4389    4   4   0        12
                73.60          5.13        1.2870    6   2   0        24
                76.79          9.68        1.2413    5   3   3        24
                82.02          2.11        1.1748    4   4   4         8
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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.