Neighborite
      Mitchell R H, Alexander M, Cranswick L M D, Swainson I P
      Physics and Chemistry of Minerals 34 (2007) 705-712
      A powder neutron diffraction study of the crystal structure of the
      fluoroperovskite NaMgF3 (neighborite) from 300 to 3.6 K
      Locality: synthetic
      Sample: T = 75 K
      _database_code_amcsd 0009122

      CELL PARAMETERS:    5.3308   5.4814   7.6352   90.000   90.000   90.000
      SPACE GROUP: Pbnm      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    223.102
      Density (g/cm3):      3.104
      MAX. ABS. INTENSITY / VOLUME**2:      6.153369454    
      RIR:      0.645
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                20.32          1.15        4.3709    1   0   1         4
                23.28         36.13        3.8216    1   1   0         4
                23.30         15.12        3.8176    0   0   2         2
                26.07          9.36        3.4174    1   1   1         8
                32.67         25.13        2.7407    0   2   0         2
                33.17         90.03        2.7009    1   1   2         8
                33.62         15.34        2.6654    2   0   0         2
                36.88          8.64        2.4374    1   2   0         4
                37.52         20.43        2.3970    2   1   0         4
                38.78         20.20        2.3220    1   2   1         8
                39.23         44.99        2.2967    1   0   3         4
                39.40         33.15        2.2870    2   1   1         8
                40.52         40.82        2.2264    0   2   2         4
                41.31         24.89        2.1854    2   0   2         4
                42.68         16.97        2.1183    1   1   3         8
                44.08         18.80        2.0544    1   2   2         8
                44.64          9.38        2.0300    2   1   2         8
                47.59        100.00        1.9108    2   2   0         4
                47.64         54.55        1.9088    0   0   4         2
                48.83          7.66        1.8650    0   2   3         4
                49.15          7.10        1.8536    2   2   1         8
                51.94          5.71        1.7603    1   2   3         8
                52.44          5.56        1.7449    2   1   3         8
                52.90          3.88        1.7307    3   0   1         4
                52.98         12.67        1.7284    1   3   0         4
                53.64         10.01        1.7087    2   2   2         8
                53.67          7.18        1.7076    1   1   4         8
                54.27          1.07        1.6903    3   1   0         4
                54.43         16.61        1.6858    1   3   1         8
                55.69          3.86        1.6504    3   1   1         8
                58.63         19.32        1.5746    1   3   2         8
                58.97         20.57        1.5663    0   2   4         4
                59.57         15.96        1.5519    2   0   4         4
                59.84         48.00        1.5456    3   1   2         8
                62.27          2.64        1.4910    3   2   0         4
                62.85          1.49        1.4785    2   3   1         8
                63.36          3.64        1.4680    1   0   5         4
                65.25          4.15        1.4299    1   3   3         8
                66.39          2.05        1.4081    3   1   3         8
                66.73          2.37        1.4018    2   3   2         8
                68.47          8.06        1.3704    0   4   0         2
                69.62         28.44        1.3504    2   2   4         8
                69.72          1.39        1.3488    0   4   1         4
                70.69          4.36        1.3327    4   0   0         2
                71.02          5.03        1.3272    1   4   0         4
                72.95          4.71        1.2967    2   3   3         8
                73.07          2.96        1.2950    4   1   0         4
                73.13          7.37        1.2941    1   2   5         8
                73.41          1.20        1.2898    0   4   2         4
                73.54          3.66        1.2879    2   1   5         8
                73.63          3.65        1.2865    3   2   3         8
                73.98          5.12        1.2812    1   3   4         8
                74.29          1.58        1.2767    4   1   1         8
                75.57          2.16        1.2582    4   0   2         4
                75.90          1.36        1.2536    1   4   2         8
                77.90          3.05        1.2263    4   1   2         8
                78.48          2.13        1.2187    2   4   0         4
                79.28          3.62        1.2084    3   3   2         8
                79.36          6.31        1.2074    1   1   6         8
                80.07          1.52        1.1985    4   2   0         4
                80.52          2.68        1.1929    2   2   5         8
                81.85          1.10        1.1768    1   4   3         8
                83.46          1.79        1.1581    3   0   5         4
                83.82          2.47        1.1542    4   1   3         8
                84.70          3.56        1.1444    1   3   5         8
                85.18          2.99        1.1391    3   3   3         8
                85.74          3.35        1.1331    3   1   5         8
                87.66          4.61        1.1132    0   4   4         4
                89.07          3.78        1.0992    2   4   3         8
                89.74          2.68        1.0927    4   0   4         4
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.