Na.5H.5AlSi206
      Muller G, Paulus H, Stiefel J
      Neues Jahrbuch fur Mineralogie, Monatshefte 1990 (1990) 493-503
      Synthesis and structure of beta-quartz type
      Na0.5H0.5AlSi206 as compared to LiAlSi206
      Note: stuffed beta-quartz type structure
      Sample: ref 2
      _database_code_amcsd 0014848

      CELL PARAMETERS:    5.1500   5.1500   5.4580   90.000   90.000  120.000
      SPACE GROUP: P6_222    
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    125.366
      Density (g/cm3):      2.532
      MAX. ABS. INTENSITY / VOLUME**2:      31.00179882    
      RIR:      3.987
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                19.91          9.14        4.4600    1   0   0         6
                25.80        100.00        3.4536    1   0   1        12
                34.84          1.91        2.5750    1   1   0         6
                38.68          1.51        2.3278    1   0   2        12
                40.45          4.47        2.2300    2   0   0         6
                43.86          2.78        2.0644    2   0   1        12
                48.61         13.13        1.8729    1   1   2        12
                53.03          1.02        1.7268    2   0   2        12
                57.19          4.82        1.6107    2   1   1        12
                65.03          2.25        1.4342    2   1   2        12
                66.30          4.68        1.4097    2   0   3        12
                72.39          1.10        1.3055    3   0   2        12
                73.56          1.28        1.2875    2   2   0         6
                79.44          1.73        1.2064    3   1   1        12
                79.49          1.08        1.2057    1   1   4        12
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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.