Roggianite
      Giuseppetti G, Mazzi F, Tadini C, Galli E
      Neues Jahrbuch fur Mineralogie, Monatshefte 1991 (1991) 307-314
      The revised crystal structure of roggianite: Ca2[Be(OH)2Al2Si4O13]<2.5H2O
      Locality: Val Vigezzo, Novara, Italy
      _database_code_amcsd 0014856

      CELL PARAMETERS:   18.3300  18.3300   9.1600   90.000   90.000   90.000
      SPACE GROUP: I4/mcm    
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:   3077.658
      Density (g/cm3):      2.351
      MAX. ABS. INTENSITY / VOLUME**2:      15.43790748    
      RIR:      2.138
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                 6.82        100.00       12.9613    1   1   0         4
                 9.65         35.63        9.1650    2   0   0         4
                13.66          2.74        6.4806    2   2   0         4
                14.50         26.58        6.1085    2   1   1        16
                15.29          6.87        5.7965    3   1   0         8
                19.97          1.20        4.4451    3   2   1        16
                20.56          2.11        4.3204    3   3   0         4
                20.57          3.82        4.3183    1   1   2         8
                21.69          5.07        4.0969    2   0   2         8
                23.79          5.39        3.7402    2   2   2         8
                24.77          1.73        3.5948    5   1   0         8
                24.78         25.49        3.5936    3   1   2        16
                26.18         32.75        3.4035    4   3   1        16
                27.53          6.15        3.2394    4   0   2         8
                27.96         16.52        3.1906    5   2   1        16
                28.39         11.20        3.1436    5   3   0         8
                28.40          6.76        3.1428    3   3   2         8
                30.85          5.97        2.8982    6   2   0         8
                31.25          5.67        2.8625    6   1   1        16
                31.26          7.15        2.8613    2   1   3        16
                31.64         14.48        2.8278    5   1   2        16
                33.89          9.53        2.6452    4   4   2         8
                34.60          2.45        2.5923    5   5   0         4
                35.32         12.52        2.5415    6   0   2         8
                35.67          1.50        2.5169    4   1   3        16
                36.70          5.91        2.4491    6   2   2        16
                38.37          3.31        2.3462    4   3   3        16
                39.32          2.53        2.2912    8   0   0         4
                39.35          5.45        2.2900    0   0   4         2
                39.64          1.82        2.2735    6   5   1        16
                39.98          1.58        2.2551    1   1   4         8
                40.59          3.30        2.2228    8   2   0         8
                42.43          2.83        2.1306    7   3   2        16
                44.20          3.62        2.0491    8   0   2         8
                44.77          2.20        2.0242    9   1   0         8
                46.75          2.18        1.9429    7   6   1        16
                47.03          6.30        1.9322    9   3   0         8
                49.21          3.65        1.8516    7   7   0         4
                49.23          8.63        1.8509    5   3   4        16
                49.74          1.13        1.8330    8   6   0         8
                49.76          1.02        1.8324    6   0   4         8
                50.02          1.10        1.8235    8   1   3        16
                50.02          3.42        1.8235    7   4   3        16
                50.81          5.41        1.7968    6   2   4        16
                53.11          1.84        1.7243   10   3   1        16
                53.38          4.46        1.7162    5   5   4         8
                53.87          1.23        1.7019   10   4   0         8
                53.87          3.00        1.7018    8   6   2        16
                60.64          1.30        1.5271    8   4   4        16
                61.09          3.53        1.5169   11   3   2        16
                62.70          1.31        1.4817    9   6   3        16
                62.94          3.54        1.4767    9   3   4        16
                64.28          1.73        1.4490   12   0   2         8
                66.54          1.43        1.4052    5   1   6        16
                67.18          1.50        1.3934   11   4   3        16
                67.83          1.28        1.3816   12   4   2        16
                68.27          5.07        1.3738    9   9   2         8
                68.72          1.20        1.3660   10   4   4        16
                68.74          1.87        1.3656    6   0   6         8
                69.60          1.12        1.3507    6   2   6        16
                71.73          1.54        1.3158   11   3   4        16
                74.06          1.11        1.2801   12   5   3        16
                75.54          2.91        1.2587   12   2   4        16
                77.44          1.05        1.2324    4   3   7        16
                78.85          1.32        1.2139   14   4   2        16
                84.64          1.27        1.1450    0   0   8         2
                88.27          1.33        1.1070   11   3   6        16
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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.