Tugtupite
      Hassan I, Grundy H D
      The Canadian Mineralogist 29 (1991) 385-390
      The crystal structure and thermal expansion of tugtupite,
      Na8[Al2Be2Si8O24]Cl2
      _database_code_amcsd 0005268

      CELL PARAMETERS:    8.6400   8.6400   8.8730   90.000   90.000   90.000
      SPACE GROUP: I-4       
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    662.366
      Density (g/cm3):      2.345
      MAX. ABS. INTENSITY / VOLUME**2:      17.00833087    
      RIR:      2.362
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                14.31         35.44        6.1901    1   0   1         4
                14.50          5.14        6.1094    1   1   0         4
                20.01          6.52        4.4365    0   0   2         2
                20.56          1.72        4.3200    2   0   0         4
                24.80         31.94        3.5898    1   1   2         4
                25.14         46.31        3.5426    2   1   1         4
                25.14         53.69        3.5426    1   2   1         4
                29.24          1.69        3.0547    2   2   0         4
                31.98          4.42        2.7983    1   0   3         4
                32.69          4.80        2.7393    3   0   1         4
                32.78          3.16        2.7322    3   1   0         4
                35.69         18.17        2.5160    2   2   2         4
                38.32          7.35        2.3486    2   1   3         4
                38.32          3.02        2.3486    1   2   3         4
                38.70          2.80        2.3264    3   1   2         4
                38.70          3.18        2.3264    1   3   2         4
                38.93          2.92        2.3134    3   2   1         4
                38.93          6.15        2.3134    2   3   1         4
                43.40          8.98        2.0851    1   1   4         4
                43.88         12.14        2.0634    3   0   3         4
                44.42          6.00        2.0394    4   1   1         4
                44.42          6.70        2.0394    1   4   1         4
                44.49          7.50        2.0365    3   3   0         4
                46.78          4.45        1.9421    4   0   2         4
                48.92          3.80        1.8619    3   2   3         4
                50.87          1.93        1.7949    2   2   4         4
                51.60          2.52        1.7713    4   2   2         4
                53.60          1.79        1.7099    1   4   3         4
                54.07          4.83        1.6961    4   3   1         4
                57.12          1.29        1.6127    1   2   5         4
                58.29          1.12        1.5829    1   5   2         4
                58.46          1.33        1.5788    5   2   1         4
                59.76          7.53        1.5475    4   0   4         4
                60.63          2.84        1.5274    4   4   0         4
                61.36          1.51        1.5108    3   0   5         4
                62.22          1.36        1.4920    3   4   3         4
                62.22          1.25        1.4920    5   0   3         4
                62.84          1.64        1.4788    0   0   6         2
                63.90          2.17        1.4569    4   2   4         4
                63.90          2.07        1.4569    2   4   4         4
                64.53          3.93        1.4442    4   4   2         4
                64.74          1.68        1.4400    6   0   0         4
                65.45          2.07        1.4261    3   2   5         4
                65.45          2.13        1.4261    2   3   5         4
                66.27          2.77        1.4103    2   5   3         4
                66.53          2.78        1.4054    5   3   2         4
                66.69          1.12        1.4025    6   1   1         4
                69.40          1.25        1.3542    1   4   5         4
                70.61          1.09        1.3340    5   4   1         4
                70.79          1.39        1.3311    2   2   6         4
                72.38          1.65        1.3056    6   2   2         4
                72.71          1.24        1.3005    1   3   6         4
                74.04          1.04        1.2804    1   6   3         4
                74.43          1.13        1.2746    3   6   1         4
                75.59          3.10        1.2580    4   4   4         4
                79.59          1.64        1.2044    2   1   7         4
                80.22          1.09        1.1966    3   3   6         4
                80.75          1.14        1.1901    2   5   5         4
                81.51          1.51        1.1809    3   6   3         4
                81.75          1.72        1.1780    1   7   2         4
                81.89          1.47        1.1763    7   2   1         4
                88.08          1.67        1.1089    6   1   5         4
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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.