Thortveitite
      Zachariasen W
      Zeitschrift fur Kristallographie 73 (1930) 1-6
      The structure of thortveitite, Sc2 Si O7
      _cod_database_code 1011147
      _database_code_amcsd 0018032

      CELL PARAMETERS:    6.5600   8.5800   4.7400   90.000  103.130   90.000
      SPACE GROUP: C2/m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    259.815
      Density (g/cm3):      3.298
      MAX. ABS. INTENSITY / VOLUME**2:      20.61245966    
      RIR:      2.035
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                17.31         13.39        5.1241    1   1   0         4
                19.23          3.07        4.6161    0   0   1         2
                20.70          1.63        4.2900    0   2   0         2
                28.28         40.29        3.1556    1   1   1         4
                28.40        100.00        3.1424    0   2   1         4
                30.19         44.07        2.9601   -2   0   1         2
                34.35         13.36        2.6104    1   3   0         4
                35.02         14.93        2.5621    2   2   0         4
                37.71          5.62        2.3853    2   0   1         2
                39.03          2.32        2.3080    0   0   2         2
                41.28         16.27        2.1869    1   3   1         4
                42.13          4.62        2.1450    0   4   0         2
                42.81          6.09        2.1124   -2   0   2         2
                43.41          6.68        2.0848    2   2   1         4
                43.80          1.35        2.0668    3   1   0         4
                43.87         12.74        2.0637   -3   1   1         4
                45.97          2.46        1.9740    1   1   2         4
                46.70          2.53        1.9452    0   4   1         4
                48.01         18.48        1.8951   -2   2   2         4
                50.28          3.29        1.8147   -1   3   2         4
                51.31          1.37        1.7807    2   4   0         4
                52.34          2.98        1.7481    3   1   1         4
                52.70          6.99        1.7369   -2   4   1         4
                53.66          2.42        1.7080    3   3   0         4
                53.72          4.95        1.7063   -3   3   1         4
                54.05          5.04        1.6967    2   0   2         2
                55.44          4.07        1.6573    1   5   0         4
                55.54         15.10        1.6546    1   3   2         4
                57.72          7.82        1.5971    4   0   0         2
                58.01          4.77        1.5899   -1   5   1         4
                58.50          4.67        1.5778    2   2   2         4
                58.77          4.36        1.5712    0   4   2         4
                60.45          5.42        1.5313    1   5   1         4
                60.57          2.47        1.5286   -2   0   3         2
                60.86          6.07        1.5220   -4   2   1         4
                61.19          2.46        1.5146    3   3   1         4
                61.36          4.74        1.5109   -3   3   2         4
                61.62          1.90        1.5051   -2   4   2         4
                62.78          2.76        1.4801   -4   0   2         2
                64.32          2.68        1.4484    0   2   3         4
                64.74          1.51        1.4400   -2   2   3         4
                65.25          4.43        1.4300    0   6   0         2
                66.56          2.45        1.4049    1   1   3         4
                67.12          1.70        1.3945    3   1   2         4
                67.62          2.00        1.3854   -1   5   2         4
                67.76          7.15        1.3829   -1   3   3         4
                70.10          3.80        1.3424    4   2   1         4
                70.47          2.26        1.3362    3   5   0         4
                70.53          3.13        1.3353   -3   5   1         4
                73.56          1.79        1.2876   -2   6   1         4
                74.24          1.32        1.2774    2   0   3         2
                78.52          3.86        1.2182   -4   4   2         4
                79.21          3.66        1.2092   -4   2   3         4
                81.82          1.57        1.1772   -1   7   1         4
                82.22          1.83        1.1725   -1   1   4         4
                82.73          3.26        1.1666    5   3   0         4
                83.78          2.15        1.1546    5   1   1         4
                83.83          1.64        1.1540    0   0   4         2
                89.41          3.55        1.0959    1   5   3         4
                89.93          2.38        1.0909    3   5   2         4
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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.