B2 Ca O4
      Zachariasen W, Ziegler G
      Zeitschrift fur Kristallographie 83 (1932) 354-361
      The Crystal Structure of Calcium Metaborate Ca B2 O4
      _cod_database_code 1010468
      _database_code_amcsd 0017385

      CELL PARAMETERS:    6.1900  11.6000   4.2800   90.000   90.000   90.000
      SPACE GROUP: Pnca      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    307.321
      Density (g/cm3):      2.716
      MAX. ABS. INTENSITY / VOLUME**2:      10.16814420    
      RIR:      1.219
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                15.28          8.03        5.8000    0   2   0         2
                26.46         41.65        3.3687    1   1   1         8
                28.85         21.67        3.0950    2   0   0         2
                29.69         18.03        3.0094    1   2   1         8
                29.88        100.00        2.9904    2   1   0         4
                30.83         17.69        2.9000    0   4   0         2
                31.17         10.77        2.8692    0   3   1         4
                32.80         19.80        2.7306    2   2   0         4
                34.45         38.20        2.6031    1   3   1         8
                39.13          1.46        2.3020    2   2   1         8
                40.29         12.16        2.2383    1   4   1         8
                42.23         32.75        2.1400    0   0   2         2
                42.73         16.83        2.1162    2   4   0         4
                44.42          4.20        2.0396    0   5   1         4
                45.16          7.90        2.0077    0   2   2         4
                45.53          1.60        1.9925    1   1   2         8
                46.90         54.03        1.9372    1   5   1         8
                47.62          2.01        1.9098    1   2   2         8
                47.96          6.57        1.8970    2   4   1         8
                49.07          1.21        1.8564    2   5   0         4
                49.68         34.33        1.8352    3   1   1         8
                51.95          5.46        1.7602    2   0   2         4
                52.59          8.18        1.7403    2   1   2         8
                53.19          3.46        1.7219    0   4   2         4
                54.12          1.15        1.6946    1   6   1         8
                54.48          8.15        1.6843    2   2   2         8
                54.80          9.81        1.6752    3   3   1         8
                56.09          5.97        1.6397    2   6   0         4
                59.03          2.14        1.5648    3   4   1         8
                60.46          2.21        1.5312    2   6   1         8
                61.64          7.70        1.5047    2   4   2         8
                61.88          6.72        1.4993    1   7   1         8
                62.07          7.83        1.4952    4   2   0         4
                67.90          2.01        1.3803    1   1   3         8
                68.76          2.08        1.3653    4   4   0         4
                70.34          2.00        1.3385    0   3   3         4
                71.91          1.68        1.3130    2   8   0         4
                72.21          3.14        1.3082    1   3   3         8
                72.64          4.11        1.3016    2   6   2         8
                77.11          1.36        1.2369    3   7   1         8
                77.41          1.37        1.2328    4   5   1         8
                77.95          3.26        1.2257    4   2   2         8
                78.74          1.44        1.2153    0   5   3         4
                79.13          3.22        1.2103    1   9   1         8
                79.30          2.51        1.2081    4   6   0         4
                80.55          4.49        1.1925    1   5   3         8
                80.77          2.50        1.1898    2   9   0         4
                81.33          2.86        1.1830    5   1   1         8
                81.34          3.21        1.1829    2   4   3         8
                82.65          3.93        1.1675    3   1   3         8
                83.30          3.19        1.1600    0  10   0         2
                84.10          2.71        1.1510    4   4   2         8
                85.41          2.53        1.1367    5   3   1         8
                86.71          1.79        1.1229    3   3   3         8
                87.08          1.77        1.1192    2   8   2         8
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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.