Spinel
      Carbonin S, Martignago F, Menegazzo G, Dal Negro A
      Physics and Chemistry of Minerals 29 (2002) 503-514
      X-ray single-crystal study of spinels: in situ heating
      Sample: NAT, Heating, 2nd run, T = 450 C
      _database_code_amcsd 0008668

      CELL PARAMETERS:    8.1235   8.1235   8.1235   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    536.080
      Density (g/cm3):      3.568
      MAX. ABS. INTENSITY / VOLUME**2:      18.71668307    
      RIR:      1.708
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                18.92         37.96        4.6901    1   1   1         8
                31.14         33.29        2.8721    2   2   0        12
                36.69        100.00        2.4493    3   1   1        24
                44.62         56.96        2.0309    4   0   0         6
                55.41          8.54        1.6582    4   2   2        24
                59.09          2.73        1.5634    3   3   3         8
                59.09         44.12        1.5634    5   1   1        24
                64.94         68.98        1.4360    4   4   0        12
                68.31          3.69        1.3731    5   3   1        48
                73.77          2.42        1.2844    6   2   0        24
                76.97          9.60        1.2388    5   3   3        24
                78.03          1.09        1.2247    6   2   2        24
                82.22          6.52        1.1725    4   4   4         8
                85.33          3.14        1.1375    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.