Bi0.5 F2 K0.5
      Soubeyroux J, Reau J, Matar S, Villeneuve G, Hagenmueller P
      Solid State Ionics 6 (1982) 103-111
      Etude par diffraction neutronique des solutions solides K1-x Bix F1+2x
      et Rb1-x Bix F1+2x
      _cod_database_code 1008618
      _database_code_amcsd 0016509

      CELL PARAMETERS:    5.9381   5.9381   5.9381   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    209.384
      Density (g/cm3):      5.127
      MAX. ABS. INTENSITY / VOLUME**2:      197.3826214    
      RIR:     12.535
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                25.99        100.00        3.4284    1   1   1         8
                30.10         28.81        2.9690    2   0   0         6
                43.09         53.49        2.0994    2   2   0        12
                51.01         43.06        1.7904    3   1   1        24
                53.45          7.72        1.7142    2   2   2         8
                62.57          7.52        1.4845    4   0   0         6
                68.93         14.31        1.3623    3   3   1        24
                70.99          8.08        1.3278    4   2   0        24
                78.99         12.89        1.2121    4   2   2        24
                84.85          2.13        1.1428    3   3   3         8
                84.85          6.92        1.1428    5   1   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.