Calcite
      Markgraf S A, Reeder R J
      American Mineralogist 70 (1985) 590-600
      High-temperature structure refinements of calcite and magnesite
      Sample: T = 750 C
      _database_code_amcsd 0000988

      CELL PARAMETERS:    4.9780   4.9780  17.4620   90.000   90.000  120.000
      SPACE GROUP: R-3c      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    374.744
      Density (g/cm3):      2.661
      MAX. ABS. INTENSITY / VOLUME**2:      23.23709128    
      RIR:      2.844
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                23.01          8.05        3.8655    0   1   2         6
                29.11        100.00        3.0675    1   0   4         6
                30.72          1.62        2.9103    0   0   6         2
                36.09         14.45        2.4890    1   1   0         6
                39.37         12.96        2.2885    1   1   3        12
                43.23         11.11        2.0927    2   0   2         6
                46.64         16.31        1.9474    0   1   8         6
                47.01          5.72        1.9328    0   2   4         6
                48.10         14.36        1.8916    1   1   6        12
                56.74          1.67        1.6224    2   1   1        12
                57.54          5.91        1.6018    1   2   2        12
                60.35          2.03        1.5337    2   0   8         6
                60.50          1.20        1.5302    1   1   9        12
                60.66          4.03        1.5266    2   1   4        12
                63.98          2.11        1.4552    0   0  12         2
                64.89          3.41        1.4370    3   0   0         6
                69.25          1.14        1.3568    0   2  10         6
                72.37          1.82        1.3057    1   2   8        12
                75.71          1.45        1.2562    1   1  12        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.