Combeite
      Fischer R X, Tillmanns E
      Acta Crystallographica C43 (1987) 1852-1854
      Revised data for combeite, Na2Ca2Si3O9
      Locality: synthetic high-temperature form
      _database_code_amcsd 0010051

      CELL PARAMETERS:   10.4290  10.4290  13.1490   90.000   90.000  120.000
      SPACE GROUP: R-3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:   1238.536
      Density (g/cm3):      2.808
      MAX. ABS. INTENSITY / VOLUME**2:      9.804539185    
      RIR:      1.137
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                11.89          7.47        7.4447    1   0   1         6
                16.68          3.18        5.3154    0   1   2         6
                17.00          1.73        5.2145    1   1   0         6
                20.26         14.01        4.3830    0   0   3         2
                20.80          5.49        4.2710    0   2   1         6
                23.91         45.41        3.7224    2   0   2         6
                26.57         29.35        3.3552    1   1   3        12
                26.98         58.77        3.3042    2   1   1        12
                29.48          2.36        3.0296    1   2   2        12
                29.67          5.29        3.0106    3   0   0         6
                33.72         93.58        2.6577    0   2   4         6
                34.40        100.00        2.6072    2   2   0         6
                35.55          4.22        2.5249    0   1   5         6
                38.46          8.86        2.3408    3   1   2        12
                39.66          6.55        2.2725    2   0   5         6
                40.54          4.23        2.2254    4   0   1         6
                41.19          2.26        2.1915    0   0   6         2
                42.32         11.19        2.1355    0   4   2         6
                43.44          4.43        2.0833    1   2   5        12
                44.86          2.87        2.0203    1   1   6        12
                45.53          3.09        1.9924    1   3   4        12
                48.94         61.92        1.8612    4   0   4         6
                49.57          2.71        1.8391    1   0   7         6
                50.30          1.10        1.8138    3   1   5        12
                50.79          8.71        1.7975    1   4   3        12
                51.04          6.30        1.7895    0   5   1         6
                52.66          4.36        1.7382    3   3   0         6
                52.78          5.19        1.7344    0   2   7         6
                54.19          1.12        1.6926    2   4   1        12
                55.87          7.03        1.6457    2   1   7        12
                56.55          1.30        1.6275    2   3   5        12
                57.00          4.63        1.6158    3   3   3        12
                57.22          2.03        1.6100    5   1   1        12
                58.61          3.15        1.5749    1   5   2        12
                59.89         12.14        1.5445    2   0   8         6
                61.18         20.32        1.5148    2   4   4        12
                61.61          8.29        1.5053    6   0   0         6
                63.00          5.41        1.4754    4   3   1        12
                63.70          1.69        1.4610    0   0   9         2
                67.28          5.68        1.3917    3   2   7        12
                68.29          5.98        1.3734    5   2   3        12
                70.92          7.90        1.3288    0   4   8         6
                71.82          1.10        1.3144    3   0   9         6
                72.51         10.50        1.3036    4   4   0         6
                73.20          2.13        1.2930    3   4   5        12
                73.55          1.12        1.2877    2   3   8        12
                74.44          2.50        1.2745    2   2   9        12
                76.19          1.24        1.2495    4   4   3        12
                78.37          1.79        1.2201    6   1   5        12
                79.38          1.26        1.2071    5   2   6        12
                81.26          6.36        1.1839    4   2   8        12
                82.40          8.44        1.1704    6   2   4        12
                83.69          1.12        1.1556    2   0  11         6
                86.21          2.25        1.1282    1   2  11        12
                87.15          1.18        1.1184    3   3   9        12
                87.90          2.17        1.1107    1   6   7        12
                87.96          1.00        1.1102    3   2  10        12
                88.80          1.29        1.1018    3   4   8        12
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.