Calcite
      Maslen E N, Streltsov V A, Streltsova N R
      Acta Crystallographica B49 (1993) 636-641
      X-ray study of the electron density in calcite, CaCO3
      _database_code_amcsd 0009873

      CELL PARAMETERS:    4.9910   4.9910  17.0620   90.000   90.000  120.000
      SPACE GROUP: R-3c      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    368.075
      Density (g/cm3):      2.709
      MAX. ABS. INTENSITY / VOLUME**2:      26.81198114    
      RIR:      3.223
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                23.07          8.49        3.8557    0   1   2         6
                29.42        100.00        3.0361    1   0   4         6
                31.46          2.10        2.8437    0   0   6         2
                35.99         14.33        2.4955    1   1   0         6
                39.43         19.24        2.2852    1   1   3        12
                43.18         14.83        2.0950    2   0   2         6
                47.14          6.58        1.9278    0   2   4         6
                47.54         20.00        1.9126    0   1   8         6
                48.54         20.93        1.8757    1   1   6        12
                56.59          3.51        1.6263    2   1   1        12
                57.43          9.99        1.6045    1   2   2        12
                60.70          5.83        1.5256    2   1   4        12
                61.04          2.69        1.5180    2   0   8         6
                61.42          2.93        1.5096    1   1   9        12
                63.09          2.13        1.4735    1   2   5        12
                64.70          6.99        1.4408    3   0   0         6
                65.67          3.90        1.4218    0   0  12         2
                69.23          1.39        1.3571    2   1   7        12
                70.29          2.39        1.3392    0   2  10         6
                72.94          3.09        1.2969    1   2   8        12
                77.22          2.30        1.2354    1   1  12        12
                81.59          2.66        1.1800    2   1  10        12
                83.82          1.67        1.1541    1   3   4        12
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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.