Ba2CuSi2O7
      Du J M, Zeng H Y, Song L J, Dong Z C, Ma H W, Guo G C, Huang J S
      Jiegou Huaxue 22 (2003) 33-36
      Synthesis and structure of a new polymorph Ba2CuSi2O7
      Note: known as beta-Ba2CuSi2O7
      Locality: synthetic
      _database_code_amcsd 0018759

      CELL PARAMETERS:    8.2840   8.2840   5.3130   90.000   90.000   90.000
      SPACE GROUP: P-42_1m   
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    364.603
      Density (g/cm3):      4.612
      MAX. ABS. INTENSITY / VOLUME**2:      99.53630862    
      RIR:      7.028
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                15.13          2.88        5.8577    1   1   0         4
                16.69          6.02        5.3130    0   0   1         2
                21.45          3.96        4.1420    2   0   0         4
                22.59         20.86        3.9354    1   1   1         4
                24.02         16.24        3.7047    2   1   0         8
                27.30         41.61        3.2666    2   0   1         8
                29.39        100.00        3.0389    2   1   1         8
                30.52          5.92        2.9288    2   2   0         4
                33.74         15.03        2.6565    0   0   2         2
                34.23         24.21        2.6196    3   1   0         8
                35.49          2.27        2.5296    1   0   2         8
                36.68          2.31        2.4502    3   0   1         8
                38.31          2.71        2.3496    3   1   1         8
                40.33          1.36        2.2361    2   0   2         8
                41.84         21.01        2.1588    2   1   2         8
                43.71          2.49        2.0710    4   0   0         4
                45.13         11.88        2.0092    4   1   0         8
                46.13          4.84        1.9677    2   2   2         4
                46.51          8.24        1.9526    3   3   0         4
                47.10          5.18        1.9296    4   0   1         8
                48.44         13.96        1.8793    4   1   1         8
                48.83         19.02        1.8653    3   1   2         8
                49.19          5.41        1.8524    4   2   0         8
                49.75         14.49        1.8327    3   3   1         4
                51.61          1.50        1.7710    0   0   3         2
                54.10          1.92        1.6952    1   1   3         4
                56.51          4.02        1.6284    2   0   3         8
                57.51          6.93        1.6025    4   1   2         8
                57.70         11.45        1.5978    2   1   3         8
                58.68          4.67        1.5733    3   3   2         4
                59.50          4.35        1.5536    5   1   1         8
                60.15          1.16        1.5383    5   2   0         8
                60.98          3.12        1.5194    4   2   2         8
                62.90         10.17        1.4776    5   2   1         8
                63.53          1.85        1.4644    4   4   0         4
                65.73          2.15        1.4207    5   3   0         8
                67.89          4.09        1.3807    6   0   0         4
                70.47          1.80        1.3363    6   0   1         8
                70.78          3.32        1.3312    5   2   2         8
                70.94          6.29        1.3286    4   1   3         8
                70.96          1.63        1.3283    0   0   4         2
                71.99          4.57        1.3118    3   3   3         4
                73.15          1.42        1.2937    5   4   0         8
                73.90          1.25        1.2825    4   4   2         4
                74.63          4.32        1.2717    6   2   1         8
                75.66          4.19        1.2570    5   4   1         8
                75.96          2.85        1.2528    5   3   2         8
                76.13          2.07        1.2503    2   1   4         8
                77.99          4.81        1.2251    6   0   2         8
                80.17          1.85        1.1972    5   1   3         8
                81.20          4.44        1.1847    3   1   4         8
                83.03          2.63        1.1631    5   4   2         8
                83.18          3.94        1.1614    5   2   3         8
                85.30          1.40        1.1379    7   2   0         8
                86.72          1.94        1.1228    6   4   1         8
                87.71          2.23        1.1127    7   2   1         8
                88.18          1.69        1.1080    4   1   4         8
                89.17          1.50        1.0982    3   3   4         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.