Na.11K.89MgF3
      Chakhmouradian A R, Ross K, Mitchell R H, Swainson I
      Physics and Chemistry of Minerals 28 (2001) 277-284
      The crystal chemistry of synthetic potassium-bearing neighborite, (Na1-xKx)MgF3
      Sample x = .89
      _database_code_amcsd 0008550

      CELL PARAMETERS:    3.9824   3.9824   3.9824   90.000   90.000   90.000
      SPACE GROUP: Pm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     63.159
      Density (g/cm3):      3.118
      MAX. ABS. INTENSITY / VOLUME**2:      19.61128281    
      RIR:      2.048
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                22.32          2.93        3.9824    1   0   0         6
                31.78         83.38        2.8160    1   1   0        12
                39.18         74.28        2.2992    1   1   1         8
                45.56        100.00        1.9912    2   0   0         6
                51.30          1.48        1.7810    2   1   0        24
                56.61         25.86        1.6258    2   1   1        24
                66.40         45.15        1.4080    2   2   0        12
                75.49          9.16        1.2593    3   1   0        24
                79.89         10.69        1.2007    3   1   1        24
                84.22         11.87        1.1496    2   2   2         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.