Cuprite
      Hafner S S, Nagel S
      Physics and Chemistry of Minerals 9 (1983) 19-22
      The electric field gradient at the position of copper in
      Cu2O and electronic charge density analysis by means of K-factors
      _database_code_amcsd 0007351

      CELL PARAMETERS:    4.2696   4.2696   4.2696   90.000   90.000   90.000
      SPACE GROUP: Pn3       
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     77.833
      Density (g/cm3):      6.105
      MAX. ABS. INTENSITY / VOLUME**2:      194.0733730    
      RIR:     10.351
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                29.59          4.15        3.0191    1   1   0        12
                36.45        100.00        2.4651    1   1   1         8
                42.34         37.65        2.1348    2   0   0         6
                61.42         32.48        1.5095    2   2   0        12
                73.58         28.30        1.2873    3   1   1        24
                77.43          6.61        1.2325    2   2   2         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.