Fluorine
      Jordan T H, Streib W E, Lipscomb W N
      Journal of Chemical Physics 41 (1964) 760-764
      Single-crystal X-ray diffraction study of beta-fluorine
      Locality: synthetic
      Note: T = 50 K
      Note: beta phase, stable between T = 45.55 K & 53.54 K
      _database_code_amcsd 0012972

      CELL PARAMETERS:    6.6700   6.6700   6.6700   90.000   90.000   90.000
      SPACE GROUP: Pm3n      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    296.741
      Density (g/cm3):      0.850
      MAX. ABS. INTENSITY / VOLUME**2:      5.906860517    
      RIR:      2.262
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                26.73         34.89        3.3350    2   0   0         6
                29.96        100.00        2.9829    2   1   0        24
                32.89         74.86        2.7230    2   1   1        24
                47.20          6.93        1.9255    2   2   2         8
                49.26         17.54        1.8499    3   2   0        24
                51.25         29.86        1.7826    3   2   1        48
                55.07         11.05        1.6675    4   0   0         6
                62.25          6.49        1.4915    4   2   0        24
                63.96         11.51        1.4555    4   2   1        48
                65.66          5.13        1.4220    3   3   2        24
                76.99          5.11        1.2386    4   3   2        48
                76.99          2.56        1.2386    5   2   0        24
                78.55          4.70        1.2178    5   2   1        48
                81.66          4.01        1.1791    4   4   0        12
                87.81          1.52        1.1117    4   4   2        24
                89.34          1.43        1.0965    6   1   0        24
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.