Cu15 Si4
      Morral F, Westgren A
      Arkiv for Kemi, Mineralogi och Geologi B11 (1934) 1-6
      The crystal structure of a complex copper-silicon compound
      _cod_database_code 1010631
      _database_code_amcsd 0017513

      CELL PARAMETERS:    9.6940   9.6940   9.6940   90.000   90.000   90.000
      SPACE GROUP: I-43d     
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    910.980
      Density (g/cm3):      7.768
      MAX. ABS. INTENSITY / VOLUME**2:      171.0051258    
      RIR:      7.168
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                26.00          3.76        3.4273    2   2   0        12
                29.13          4.13        3.0655    3   1   0        24
                34.62         24.46        2.5908    3   2   1        24
                37.10          3.83        2.4235    4   0   0         6
                43.80        100.00        2.0668    3   3   2        12
                45.86         15.97        1.9788    4   2   2        12
                47.85         57.48        1.9011    5   1   0        24
                51.64          2.44        1.7699    5   2   1        24
                55.25          2.42        1.6625    5   3   0        24
                58.71          4.38        1.5726    6   1   1        12
                58.71          2.56        1.5726    5   3   2        24
                62.05          3.79        1.4958    5   4   1        24
                65.28          1.04        1.4293    6   3   1        24
                69.98          8.03        1.3443    6   4   0        24
                71.52          2.36        1.3192    6   3   3        12
                71.52          4.59        1.3192    5   5   2        12
                73.04          1.52        1.2954    6   4   2        24
                77.54         14.21        1.2311    6   5   1        24
                77.54          1.94        1.2311    7   3   2        24
                81.96          1.72        1.1756    8   2   0        24
                83.42          2.14        1.1587    6   5   3        24
                84.88          5.30        1.1424    8   2   2        12
                86.33          6.03        1.1269    7   4   3        24
                86.33          8.11        1.1269    8   3   1        24
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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.