Paramelaconite
      O'Keeffe M, Bovin J O
      American Mineralogist 63 (1978) 180-185
      The crystal structure of paramelaconite, Cu4O3
      _database_code_amcsd 0000614

      CELL PARAMETERS:    5.8370   5.8370   9.9320   90.000   90.000   90.000
      SPACE GROUP: I4_1/amd  
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    338.389
      Density (g/cm3):      5.931
      MAX. ABS. INTENSITY / VOLUME**2:      174.3417420    
      RIR:      9.572
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                17.62          1.19        5.0323    1   0   1         8
                30.63          2.66        2.9185    2   0   0         4
                35.68        100.00        2.5161    2   0   2         8
                36.18         16.30        2.4830    0   0   4         2
                43.87         18.49        2.0637    2   2   0         4
                48.11          1.01        1.8912    2   0   4         8
                58.12         27.19        1.5871    2   2   4         8
                63.78          9.67        1.4592    4   0   0         4
                64.74         13.97        1.4399    2   0   6         8
                75.28         16.29        1.2623    4   2   2        16
                75.58          6.02        1.2581    4   0   4         8
                76.77          2.43        1.2415    0   0   8         2
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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.