CaAl4Si2O11
      Gautron L, Angel R J, Miletich R
      Physics and Chemistry of Minerals 27 (1999) 47-51
      Structural characterisation of the high-pressure phase CaAl4Si2O11
      Note: Biso values altered to agree with the anisotropic values, as indicated
      by Ross Angel, March 2004
      _database_code_amcsd 0008275

      CELL PARAMETERS:    5.4223   5.4223  12.7041   90.000   90.000  120.000
      SPACE GROUP: P6_3/mmc  
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    323.476
      Density (g/cm3):      3.903
      MAX. ABS. INTENSITY / VOLUME**2:      12.13462955    
      RIR:      1.012
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                13.94         14.22        6.3520    0   0   2         2
                23.56         14.41        3.7760    1   0   2        12
                28.10         23.90        3.1760    0   0   4         2
                33.04         30.31        2.7111    1   1   0         6
                34.08         76.36        2.6308    1   0   4        12
                36.02         61.44        2.4935    1   1   2        12
                40.98         43.13        2.2023    2   0   2        12
                42.70          8.34        2.1173    0   0   6         2
                43.91          3.26        2.0620    1   1   4        12
                44.10        100.00        2.0534    2   0   3        12
                47.08          2.94        1.9302    1   0   6        12
                55.03          2.33        1.6687    1   1   6        12
                58.09          4.38        1.5880    0   0   8         2
                58.72         74.28        1.5724    2   0   6        12
                59.01          4.57        1.5653    3   0   0         6
                59.68         36.19        1.5494    2   1   4        24
                60.96         11.28        1.5198    3   0   2        12
                68.47          1.20        1.3703    1   1   8        12
                69.05          1.02        1.3602    2   1   6        24
                69.32         48.84        1.3556    2   2   0         6
                71.76          9.64        1.3154    2   0   8        12
                76.39          5.08        1.2468    2   2   4        12
                77.90          2.92        1.2263    1   0  10        12
                79.17          9.98        1.2098    2   0   9        12
                79.55         10.48        1.2050    3   1   4        24
                83.80          4.23        1.1544    4   0   2        12
                84.16          5.26        1.1504    1   1  10        12
                85.91          5.43        1.1313    4   0   3        12
                87.25          1.43        1.1173    2   0  10        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.