Fluorocronite
      Mills S J, Kartashov P M, Gamyanin G N, Whitfield P S, Kern A,
      Guerault H, Kampf A R, Raudsepp M
      European Journal of Mineralogy 23 (2011) 695-700
      Fluorocronite, the natural analogue of beta-PbF2,
      from the Sakha Republic, Russian Federation
      Locality: Kupol'noe deposit, Sarychev range, Sakha Republic, Russian Federation
      _database_code_amcsd 0018634

      CELL PARAMETERS:    5.9306   5.9306   5.9306   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    208.591
      Density (g/cm3):      7.807
      MAX. ABS. INTENSITY / VOLUME**2:      552.5372290    
      RIR:     23.046
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                26.02        100.00        3.4240    1   1   1         8
                30.14         32.32        2.9653    2   0   0         6
                43.14         51.03        2.0968    2   2   0        12
                51.08         42.04        1.7881    3   1   1        24
                53.53          8.18        1.7120    2   2   2         8
                62.66          7.01        1.4827    4   0   0         6
                69.03         14.75        1.3606    3   3   1        24
                71.09          9.54        1.3261    4   2   0        24
                79.11         12.15        1.2106    4   2   2        24
                84.98          7.40        1.1413    5   1   1        24
                84.98          2.47        1.1413    3   3   3         8
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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.