Spinel
      Martignago F, Dal Negro A, Carbonin S
      Physics and Chemistry of Minerals 30 (2003) 401-408
      How Cr3+ and Fe3+ affect Mg-Al order-disorder transformation at high temperature
      in natural spinels
      Sample: H-Cr, 1st run, T = 25 C
      _database_code_amcsd 0008795

      CELL PARAMETERS:    8.1080   8.1080   8.1080   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    533.017
      Density (g/cm3):      3.655
      MAX. ABS. INTENSITY / VOLUME**2:      20.66579366    
      RIR:      1.841
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                18.96         40.72        4.6812    1   1   1         8
                31.20         30.72        2.8666    2   2   0        12
                36.76        100.00        2.4447    3   1   1        24
                44.71         57.41        2.0270    4   0   0         6
                55.52          8.36        1.6550    4   2   2        24
                59.22          2.96        1.5604    3   3   3         8
                59.22         44.74        1.5604    5   1   1        24
                65.08         70.81        1.4333    4   4   0        12
                68.46          4.07        1.3705    5   3   1        48
                73.93          2.53        1.2820    6   2   0        24
                77.14         10.31        1.2365    5   3   3        24
                78.20          1.41        1.2223    6   2   2        24
                82.41          7.00        1.1703    4   4   4         8
                85.53          3.37        1.1353    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.