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 = 573 K
      Melilite group
      _database_code_amcsd 0008514

      CELL PARAMETERS:    7.8656   7.8656   5.0289   90.000   90.000   90.000
      SPACE GROUP: P-42_1m   
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    311.126
      Density (g/cm3):      3.279
      MAX. ABS. INTENSITY / VOLUME**2:      21.41095081    
      RIR:      2.126
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                17.64         14.70        5.0289    0   0   1         2
                20.97          7.62        4.2369    1   0   1         8
                23.85         36.83        3.7302    1   1   1         4
                25.32          4.41        3.5176    2   1   0         8
                28.82         58.23        3.0980    2   0   1         8
                31.03        100.00        2.8824    2   1   1         8
                32.19         12.81        2.7809    2   2   0         4
                35.71          5.45        2.5145    0   0   2         2
                36.11         36.16        2.4873    3   1   0         8
                36.94         10.20        2.4336    2   2   1         4
                37.55          6.09        2.3950    1   0   2         8
                38.73          6.43        2.3249    3   0   1         8
                39.32          4.51        2.2912    1   1   2         4
                40.46          7.92        2.2295    3   1   1         8
                44.28         12.08        2.0456    2   1   2         8
                45.31          2.20        2.0013    3   2   1         8
                46.16          1.85        1.9664    4   0   0         4
                47.67          6.44        1.9077    4   1   0         8
                48.83         10.26        1.8651    2   2   2         4
                49.14          5.00        1.8539    3   3   0         4
                49.79          2.75        1.8314    4   0   1         8
                51.22          8.83        1.7837    4   1   1         8
                51.69         33.21        1.7683    3   1   2         8
                51.99         11.94        1.7588    4   2   0         8
                52.61          7.61        1.7395    3   3   1         4
                55.34          5.06        1.6602    4   2   1         8
                55.79          2.34        1.6478    3   2   2         8
                57.41          3.90        1.6050    1   1   3         4
                59.97          1.82        1.5426    5   1   0         8
                59.99          3.98        1.5421    2   0   3         8
                61.25          4.28        1.5133    2   1   3         8
                63.03          7.14        1.4748    5   1   1         8
                64.68          3.70        1.4412    4   2   2         8
                64.96          4.76        1.4356    2   2   3         4
                66.17          2.45        1.4123    3   0   3         8
                66.68          8.03        1.4026    5   2   1         8
                67.34          4.30        1.3905    4   4   0         4
                67.36          2.65        1.3901    3   1   3         8
                69.71          2.12        1.3489    5   3   0         8
                70.23          3.27        1.3402    4   4   1         4
                70.63          1.23        1.3336    4   3   2         8
                71.79          1.37        1.3149    5   1   2         8
                72.04          4.22        1.3109    6   0   0         4
                73.19          1.03        1.2931    6   1   0         8
                74.36          1.04        1.2757    4   0   3         8
                75.50          3.82        1.2592    4   1   3         8
                75.64          1.66        1.2572    0   0   4         2
                76.63          3.41        1.2434    3   3   3         4
                78.63          1.62        1.2168    4   4   2         4
                79.37          3.87        1.2073    6   2   1         8
                80.49          1.93        1.1933    5   4   1         8
                80.86          2.64        1.1887    5   3   2         8
                83.09          3.14        1.1624    6   0   2         8
                84.45          1.32        1.1471    4   3   3         8
                84.59          1.44        1.1456    2   2   4         4
                85.56          3.45        1.1351    5   1   3         8
                86.80          2.62        1.1220    3   1   4         8
                88.86          1.04        1.1012    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.