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 = 503 K
      Melilite group
      _database_code_amcsd 0008512

      CELL PARAMETERS:    7.8591   7.8591   5.0258   90.000   90.000   90.000
      SPACE GROUP: P-42_1m   
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    310.421
      Density (g/cm3):      3.287
      MAX. ABS. INTENSITY / VOLUME**2:      21.68675729    
      RIR:      2.148
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                17.65         14.61        5.0258    0   0   1         2
                20.98          7.49        4.2341    1   0   1         8
                23.87         36.86        3.7275    1   1   1         4
                25.34          4.35        3.5147    2   1   0         8
                28.84         57.98        3.0956    2   0   1         8
                31.05        100.00        2.8803    2   1   1         8
                32.22         12.79        2.7786    2   2   0         4
                35.73          5.46        2.5129    0   0   2         2
                36.14         36.24        2.4853    3   1   0         8
                36.97         10.15        2.4317    2   2   1         4
                37.58          6.08        2.3935    1   0   2         8
                38.76          6.48        2.3231    3   0   1         8
                39.35          4.47        2.2897    1   1   2         4
                40.49          7.97        2.2278    3   1   1         8
                44.31         12.17        2.0442    2   1   2         8
                45.35          2.21        1.9997    3   2   1         8
                46.20          1.86        1.9648    4   0   0         4
                47.71          6.53        1.9061    4   1   0         8
                48.87         10.33        1.8638    2   2   2         4
                49.19          5.02        1.8524    3   3   0         4
                49.83          2.79        1.8299    4   0   1         8
                51.26          8.97        1.7822    4   1   1         8
                51.73         33.70        1.7670    3   1   2         8
                52.04         12.07        1.7573    4   2   0         8
                52.66          7.76        1.7381    3   3   1         4
                55.39          5.12        1.6589    4   2   1         8
                55.83          2.35        1.6466    3   2   2         8
                57.45          4.00        1.6040    1   1   3         4
                60.02          1.87        1.5413    5   1   0         8
                60.03          4.09        1.5411    2   0   3         8
                61.30          4.35        1.5123    2   1   3         8
                63.09          7.32        1.4736    5   1   1         8
                64.73          3.80        1.4401    4   2   2         8
                65.01          4.90        1.4347    2   2   3         4
                66.22          2.46        1.4114    3   0   3         8
                66.74          8.25        1.4015    5   2   1         8
                67.41          4.41        1.3893    4   4   0         4
                67.42          2.69        1.3891    3   1   3         8
                69.78          2.19        1.3478    5   3   0         8
                70.30          3.36        1.3391    4   4   1         4
                70.69          1.25        1.3326    4   3   2         8
                71.86          1.40        1.3138    5   1   2         8
                72.11          4.35        1.3098    6   0   0         4
                73.26          1.06        1.2920    6   1   0         8
                74.42          1.10        1.2748    4   0   3         8
                75.56          3.95        1.2583    4   1   3         8
                75.70          1.73        1.2565    0   0   4         2
                76.70          3.56        1.2425    3   3   3         4
                78.70          1.68        1.2159    4   4   2         4
                79.45          4.04        1.2063    6   2   1         8
                80.57          2.02        1.1923    5   4   1         8
                80.94          2.78        1.1878    5   3   2         8
                83.17          3.30        1.1615    6   0   2         8
                84.53          1.35        1.1463    4   3   3         8
                84.66          1.50        1.1448    2   2   4         4
                85.63          3.62        1.1343    5   1   3         8
                85.76          1.05        1.1329    3   0   4         8
                86.87          2.75        1.1213    3   1   4         8
                88.95          1.09        1.1004    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.