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 = 673 K
      Melilite group
      _database_code_amcsd 0008515

      CELL PARAMETERS:    7.8732   7.8732   5.0336   90.000   90.000   90.000
      SPACE GROUP: P-42_1m   
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    312.019
      Density (g/cm3):      3.270
      MAX. ABS. INTENSITY / VOLUME**2:      21.15061888    
      RIR:      2.106
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                17.62         14.97        5.0336    0   0   1         2
                20.95          7.64        4.2409    1   0   1         8
                23.83         36.79        3.7337    1   1   1         4
                25.29          4.48        3.5210    2   1   0         8
                28.79         58.23        3.1009    2   0   1         8
                31.00        100.00        2.8852    2   1   1         8
                32.16         12.61        2.7836    2   2   0         4
                35.67          5.42        2.5168    0   0   2         2
                36.08         35.95        2.4897    3   1   0         8
                36.90         10.02        2.4359    2   2   1         4
                37.52          6.16        2.3973    1   0   2         8
                38.69          6.41        2.3271    3   0   1         8
                39.29          4.42        2.2933    1   1   2         4
                40.42          7.85        2.2317    3   1   1         8
                44.24         11.84        2.0475    2   1   2         8
                45.27          2.19        2.0033    3   2   1         8
                46.12          1.79        1.9683    4   0   0         4
                47.62          6.39        1.9095    4   1   0         8
                48.78         10.14        1.8669    2   2   2         4
                49.09          4.90        1.8557    3   3   0         4
                49.74          2.69        1.8331    4   0   1         8
                51.16          8.61        1.7854    4   1   1         8
                51.64         32.50        1.7700    3   1   2         8
                51.94         11.72        1.7605    4   2   0         8
                52.56          7.38        1.7412    3   3   1         4
                55.28          4.97        1.6618    4   2   1         8
                55.73          2.31        1.6494    3   2   2         8
                57.35          3.82        1.6065    1   1   3         4
                59.90          1.82        1.5441    5   1   0         8
                59.93          3.84        1.5435    2   0   3         8
                61.19          4.09        1.5147    2   1   3         8
                62.97          6.91        1.4762    5   1   1         8
                64.61          3.55        1.4426    4   2   2         8
                64.89          4.65        1.4370    2   2   3         4
                66.10          2.32        1.4136    3   0   3         8
                66.61          7.74        1.4040    5   2   1         8
                67.27          4.15        1.3918    4   4   0         4
                67.29          2.58        1.3914    3   1   3         8
                69.63          1.99        1.3502    5   3   0         8
                70.16          3.18        1.3415    4   4   1         4
                70.55          1.20        1.3349    4   3   2         8
                71.71          1.29        1.3161    5   1   2         8
                71.96          3.99        1.3122    6   0   0         4
                75.42          3.62        1.2604    4   1   3         8
                75.56          1.57        1.2584    0   0   4         2
                76.55          3.24        1.2446    3   3   3         4
                78.54          1.55        1.2180    4   4   2         4
                79.28          3.67        1.2085    6   2   1         8
                80.39          1.81        1.1945    5   4   1         8
                80.77          2.47        1.1898    5   3   2         8
                82.99          2.97        1.1635    6   0   2         8
                84.35          1.24        1.1482    4   3   3         8
                84.49          1.35        1.1467    2   2   4         4
                85.46          3.26        1.1362    5   1   3         8
                86.70          2.44        1.1231    3   1   4         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.