Ca2CoSi2O7
      Kusaka K, Hagiya K, Ohmasa M, Okano Y, Mukai M, Iishi K, Haga N
      Physics and Chemistry of Minerals 28 (2001) 150-166
      Determination of structures of Ca2CoSi2O7, Ca2MgSi2O7, and Ca2(Mg.55Fe.45)Si2O7
      in incommensurate and normal phases and observation of diffuse streaks at high temperature
      Sample: T = 533 K
      Melilite group
      _database_code_amcsd 0008513

      CELL PARAMETERS:    7.8615   7.8615   5.0268   90.000   90.000   90.000
      SPACE GROUP: P-42_1m   
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    310.672
      Density (g/cm3):      3.284
      MAX. ABS. INTENSITY / VOLUME**2:      21.67666581    
      RIR:      2.149
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                17.64         14.61        5.0268    0   0   1         2
                20.98          7.50        4.2350    1   0   1         8
                23.87         36.82        3.7285    1   1   1         4
                25.33          4.40        3.5158    2   1   0         8
                28.83         58.09        3.0965    2   0   1         8
                31.04        100.00        2.8810    2   1   1         8
                32.21         12.71        2.7795    2   2   0         4
                35.72          5.43        2.5134    0   0   2         2
                36.13         36.20        2.4860    3   1   0         8
                36.96         10.19        2.4324    2   2   1         4
                37.57          6.18        2.3940    1   0   2         8
                38.75          6.51        2.3237    3   0   1         8
                39.34          4.49        2.2902    1   1   2         4
                40.48          7.91        2.2284    3   1   1         8
                44.30         12.26        2.0447    2   1   2         8
                45.34          2.23        2.0003    3   2   1         8
                46.19          1.86        1.9654    4   0   0         4
                47.70          6.62        1.9067    4   1   0         8
                48.85         10.42        1.8642    2   2   2         4
                49.17          5.06        1.8530    3   3   0         4
                49.82          2.81        1.8304    4   0   1         8
                51.24          8.99        1.7828    4   1   1         8
                51.72         33.74        1.7675    3   1   2         8
                52.02         12.13        1.7579    4   2   0         8
                52.64          7.77        1.7386    3   3   1         4
                55.37          5.15        1.6593    4   2   1         8
                55.82          2.39        1.6470    3   2   2         8
                57.44          4.00        1.6043    1   1   3         4
                60.00          1.89        1.5418    5   1   0         8
                60.02          4.08        1.5414    2   0   3         8
                61.28          4.36        1.5126    2   1   3         8
                63.07          7.32        1.4740    5   1   1         8
                64.71          3.79        1.4405    4   2   2         8
                64.99          4.96        1.4350    2   2   3         4
                66.20          2.48        1.4117    3   0   3         8
                66.72          8.27        1.4019    5   2   1         8
                67.38          4.43        1.3897    4   4   0         4
                67.40          2.73        1.3895    3   1   3         8
                69.75          2.18        1.3482    5   3   0         8
                70.27          3.39        1.3395    4   4   1         4
                70.67          1.28        1.3330    4   3   2         8
                71.83          1.38        1.3142    5   1   2         8
                72.08          4.35        1.3102    6   0   0         4
                73.24          1.08        1.2924    6   1   0         8
                74.40          1.09        1.2751    4   0   3         8
                75.54          4.00        1.2586    4   1   3         8
                75.68          1.74        1.2567    0   0   4         2
                76.68          3.58        1.2428    3   3   3         4
                78.67          1.68        1.2162    4   4   2         4
                79.42          4.06        1.2067    6   2   1         8
                80.54          2.03        1.1927    5   4   1         8
                80.91          2.78        1.1881    5   3   2         8
                83.14          3.33        1.1619    6   0   2         8
                84.50          1.38        1.1466    4   3   3         8
                84.63          1.50        1.1451    2   2   4         4
                85.61          3.65        1.1346    5   1   3         8
                85.74          1.07        1.1331    3   0   4         8
                86.84          2.75        1.1215    3   1   4         8
                88.92          1.10        1.1007    5   2   3         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.