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: SP239b
      Locality: xenoliths of the Alban Hills, Italy volcanic region
      _database_code_amcsd 0006738

      CELL PARAMETERS:    8.1057   8.1057   8.1057   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    532.564
      Density (g/cm3):      3.648
      MAX. ABS. INTENSITY / VOLUME**2:      21.61270110    
      RIR:      1.929
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                18.96         21.24        4.6798    1   1   1         8
                31.21         35.88        2.8658    2   2   0        12
                36.77        100.00        2.4440    3   1   1        24
                44.72         47.11        2.0264    4   0   0         6
                55.54         10.47        1.6546    4   2   2        24
                59.23          3.56        1.5599    3   3   3         8
                59.23         40.99        1.5599    5   1   1        24
                65.10         67.86        1.4329    4   4   0        12
                68.48          2.16        1.3701    5   3   1        48
                73.96          3.43        1.2816    6   2   0        24
                77.17         10.20        1.2361    5   3   3        24
                78.23          1.01        1.2220    6   2   2        24
                82.44          5.68        1.1700    4   4   4         8
                85.56          2.06        1.1350    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.