Maghemite
      Pecharroman C, Gonzalez-Carreno T, Iglesias J E
      Physics and Chemistry of Minerals 22 (1995) 21-29
      The infrared dielectric properties of maghemite, gamma-Fe2O3,
      from reflectance measurement on pressed powders
      Sample: c) idealized, either one of Fe-oct 1-6,
      or both Fe-oct 6-7 have zero occupancy
      Locality: synthetic
      _database_code_amcsd 0007900

      CELL PARAMETERS:    8.3300   8.3300  24.9900   90.000   90.000   90.000
      SPACE GROUP: P4_32_12  
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:   1734.029
      Density (g/cm3):      5.321
      MAX. ABS. INTENSITY / VOLUME**2:      94.50699738    
      RIR:      5.784
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                18.45          5.69        4.8093    1   1   3         8
                30.35         18.30        2.9451    2   0   6         8
                30.35          9.15        2.9451    2   2   0         4
                35.75         66.67        2.5116    3   1   3         8
                35.75         33.33        2.5116    1   1   9         8
                37.40          8.17        2.4047    2   2   6         8
                43.45          6.55        2.0825    0   0  12         2
                43.45         13.09        2.0825    4   0   0         4
                53.92          3.03        1.7004    2   2  12         8
                53.92          6.06        1.7004    4   2   6         8
                57.49         14.06        1.6031    5   1   3         8
                57.49          7.03        1.6031    1   1  15         8
                57.49          7.03        1.6031    3   3   9         8
                63.14         26.08        1.4725    4   0  12         8
                63.14         13.04        1.4725    4   4   0         4
                71.65          1.09        1.3171    6   0   6         8
                71.65          1.09        1.3171    6   2   0         8
                71.65          1.09        1.3171    2   0  18         8
                74.73          5.45        1.2703    5   3   9         8
                74.73          2.73        1.2703    3   3  15         8
                75.74          1.22        1.2558    2   2  18         8
                75.74          2.44        1.2558    6   2   6         8
                79.76          2.47        1.2023    4   4  12         8
                87.67          1.13        1.1131    6   4   6         8
                87.67          1.13        1.1131    6   2  12         8
                87.67          1.13        1.1131    4   2  18         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.