Spinel
      Lucchesi S, Amoriello M, Della Giusta A
      European Journal of Mineralogy 10 (1998) 473-482
      Crystal chemistry of spinels from xenoliths of the
      Alban Hills volcanic region
      Sample: SP239a
      Locality: xenoliths of the Alban Hills, Italy volcanic region
      _database_code_amcsd 0006737

      CELL PARAMETERS:    8.1041   8.1041   8.1041   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    532.248
      Density (g/cm3):      3.648
      MAX. ABS. INTENSITY / VOLUME**2:      21.51153288    
      RIR:      1.920
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                18.97         21.46        4.6789    1   1   1         8
                31.22         35.66        2.8652    2   2   0        12
                36.78        100.00        2.4435    3   1   1        24
                44.73         47.26        2.0260    4   0   0         6
                55.55         10.42        1.6542    4   2   2        24
                59.25          3.58        1.5596    3   3   3         8
                59.25         40.72        1.5596    5   1   1        24
                65.11         67.57        1.4326    4   4   0        12
                68.50          2.14        1.3698    5   3   1        48
                73.97          3.42        1.2814    6   2   0        24
                77.19         10.13        1.2359    5   3   3        24
                78.25          1.01        1.2217    6   2   2        24
                82.46          5.63        1.1697    4   4   4         8
                85.58          2.02        1.1348    5   5   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.