Akermanite
      Mokeeva V, Makarov E
      Geokhimiya 10 (1979) 1541-1544
      Isomorph in melilites: refining of crystal structure
      of akermanite and intermediate melilite
      Locality: Capo di Bove, Italy
      _database_code_amcsd 0017812

      CELL PARAMETERS:    7.7380   7.7380   5.0450   90.000   90.000   90.000
      SPACE GROUP: P-42_1m   
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    302.078
      Density (g/cm3):      2.840
      MAX. ABS. INTENSITY / VOLUME**2:      21.68398521    
      RIR:      2.486
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                16.20         15.69        5.4716    1   1   0         4
                21.02          2.81        4.2261    1   0   1         8
                22.99          4.96        3.8690    2   0   0         4
                23.99          9.18        3.7090    1   1   1         4
                25.74          2.55        3.4605    2   1   0         8
                29.09         13.34        3.0701    2   0   1         8
                31.35        100.00        2.8537    2   1   1         8
                32.73          2.41        2.7358    2   2   0         4
                35.59          1.84        2.5225    0   0   2         2
                36.73         11.18        2.4470    3   1   0         8
                37.39          8.42        2.4049    2   2   1         4
                37.50          7.11        2.3983    1   0   2         8
                39.23          9.48        2.2966    3   0   1         8
                39.33          3.76        2.2908    1   1   2         4
                40.99          2.55        2.2017    3   1   1         8
                42.79          2.17        2.1131    2   0   2         8
                44.44         10.92        2.0384    2   1   2         8
                45.95          2.23        1.9749    3   2   1         8
                46.97          9.51        1.9345    4   0   0         4
                48.51          5.01        1.8767    4   1   0         8
                49.13          1.54        1.8545    2   2   2         4
                50.01         11.53        1.8239    3   3   0         4
                51.99          8.10        1.7590    4   1   1         8
                52.07         18.25        1.7564    3   1   2         8
                52.92          4.49        1.7303    4   2   0         8
                53.42          2.09        1.7152    3   3   1         4
                54.57          1.12        1.6817    0   0   3         2
                56.28          2.20        1.6346    3   2   2         8
                57.32          1.15        1.6075    1   1   3         4
                61.29          7.82        1.5125    2   1   3         8
                62.88          2.66        1.4780    3   3   2         4
                65.11          3.96        1.4326    2   2   3         4
                66.36          1.44        1.4087    3   0   3         8
                67.81         10.55        1.3820    5   2   1         8
                68.61          2.87        1.3679    4   4   0         4
                71.24          1.17        1.3237    3   2   3         8
                71.52          1.09        1.3191    4   3   2         8
                73.42          3.15        1.2897    6   0   0         4
                75.36          1.25        1.2613    0   0   4         2
                75.98          4.72        1.2524    4   1   3         8
                76.26          1.50        1.2485    5   2   2         8
                77.36          1.34        1.2335    6   1   1         8
                80.84          1.13        1.1890    6   2   1         8
                81.99          2.52        1.1752    5   4   1         8
                84.34          1.77        1.1483    6   0   2         8
                85.22          1.04        1.1388    4   3   3         8
                85.75          1.35        1.1330    3   0   4         8
                86.36          1.88        1.1266    5   1   3         8
                86.89          1.68        1.1211    3   1   4         8
                88.90          1.02        1.1008    6   2   2         8
                89.77          2.20        1.0924    5   2   3         8
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.