Bicchulite
      Sahl K
      Zeitschrift fur Kristallographie 152 (1980) 13-21
      Refinement of the crystal structure of bicchulite, Ca2[Al2SiO6](OH)2
      Locality: synthetic
      _database_code_amcsd 0010826

      CELL PARAMETERS:    8.8250   8.8250   8.8250   90.000   90.000   90.000
      SPACE GROUP: I-43m     
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    687.296
      Density (g/cm3):      2.824
      MAX. ABS. INTENSITY / VOLUME**2:      16.58242379    
      RIR:      1.912
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                20.12          3.31        4.4125    2   0   0         6
                24.71         86.27        3.6028    2   1   1        12
                28.61          7.38        3.1201    2   2   0        12
                32.07        100.00        2.7907    3   1   0        24
                35.23         27.81        2.5476    2   2   2         4
                38.16         24.83        2.3586    3   2   1        24
                40.90         14.28        2.2062    4   0   0         6
                43.51         18.28        2.0801    3   3   0        12
                43.51         25.28        2.0801    4   1   1        12
                45.99          5.28        1.9733    4   2   0        24
                48.38          3.32        1.8815    3   3   2        12
                50.68         10.00        1.8014    4   2   2        12
                52.90          4.82        1.7307    5   1   0        24
                52.90          8.38        1.7307    4   3   1        24
                57.17          6.83        1.6112    5   2   1        24
                59.23         46.01        1.5601    4   4   0        12
                61.24         21.50        1.5135    4   3   3        12
                63.22          2.21        1.4708    6   0   0         6
                63.22          2.24        1.4708    4   4   2        12
                65.16          5.69        1.4316    5   3   2        24
                65.16          3.35        1.4316    6   1   1        12
                67.08          1.32        1.3954    6   2   0        24
                68.96          5.47        1.3617    5   4   1        24
                70.82          8.22        1.3304    6   2   2        12
                72.67          3.06        1.3012    6   3   1        24
                76.30          4.59        1.2480    5   4   3        24
                79.87          2.17        1.2009    6   3   3        12
                79.87          1.14        1.2009    5   5   2        12
                79.87          1.29        1.2009    7   2   1        24
                81.64          3.61        1.1793    6   4   2        24
                83.41         13.36        1.1588    7   3   0        24
                86.92          3.92        1.1208    6   5   1        24
                86.92          1.86        1.1208    7   3   2        24
                88.67          3.83        1.1031    8   0   0         6
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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.