Bararite
      Schlemper E O, Hamilton W C
      Journal of Chemical Physics 45 (1966) 408-409
      On the structure of trigonal ammonium fluorosilicate
      Locality: synthetic
      _database_code_amcsd 0012988

      CELL PARAMETERS:    5.7840   5.7840   4.7960   90.000   90.000  120.000
      SPACE GROUP: P-3m1     
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    138.952
      Density (g/cm3):      2.032
      MAX. ABS. INTENSITY / VOLUME**2:      14.78560118    
      RIR:      2.369
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                17.71        100.00        5.0091    1   0   0         6
                18.50         22.80        4.7960    0   0   1         2
                25.72         28.10        3.4642    0   1   1         6
                25.72         25.66        3.4642    1   0   1         6
                30.92          5.05        2.8920    1   1   0         6
                35.85          5.23        2.5045    2   0   0         6
                37.51          7.95        2.3980    0   0   2         2
                40.64         20.07        2.2201    0   2   1         6
                40.64         44.11        2.2201    2   0   1         6
                41.76          2.28        2.1629    0   1   2         6
                41.76          2.75        2.1629    1   0   2         6
                49.37          4.33        1.8460    1   1   2        12
                51.92          8.09        1.7610    2   1   1        12
                52.86         12.67        1.7321    2   0   2         6
                52.86          2.23        1.7321    0   2   2         6
                58.54          2.45        1.5769    0   3   1         6
                58.54          3.70        1.5769    3   0   1         6
                62.50         12.18        1.4860    2   1   2        12
                64.44          8.31        1.4460    2   2   0         6
                66.87          5.31        1.3991    1   1   3        12
                67.41          1.23        1.3893    3   1   0        12
                67.68          1.57        1.3844    2   2   1        12
                68.47          3.48        1.3703    3   0   2         6
                69.79          4.27        1.3475    0   2   3         6
                70.58          3.46        1.3344    3   1   1        12
                78.27          2.16        1.2215    1   2   3        12
                79.03          1.91        1.2117    0   4   1         6
                82.77          1.58        1.1661    0   1   4         6
                83.77          3.19        1.1547    0   3   3         6
                84.27          1.32        1.1492    3   2   0        12
                87.98          1.06        1.1100    0   4   2         6
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.