Calcite
      Markgraf S A, Reeder R J
      American Mineralogist 70 (1985) 590-600
      High-temperature structure refinements of calcite and magnesite
      Sample: T = 600 C
      _database_code_amcsd 0000987

      CELL PARAMETERS:    4.9780   4.9780  17.3540   90.000   90.000  120.000
      SPACE GROUP: R-3c      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    372.426
      Density (g/cm3):      2.677
      MAX. ABS. INTENSITY / VOLUME**2:      24.00392735    
      RIR:      2.919
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                23.04          8.37        3.8608    0   1   2         6
                29.20        100.00        3.0580    1   0   4         6
                30.92          1.77        2.8923    0   0   6         2
                36.09         14.26        2.4890    1   1   0         6
                39.41         14.70        2.2863    1   1   3        12
                43.25         12.07        2.0920    2   0   2         6
                46.89         17.12        1.9378    0   1   8         6
                47.08          5.88        1.9304    0   2   4         6
                48.24         16.04        1.8866    1   1   6        12
                56.75          2.06        1.6223    2   1   1        12
                57.55          6.81        1.6014    1   2   2        12
                60.56          2.15        1.5290    2   0   8         6
                60.71          4.39        1.5254    2   1   4        12
                60.76          1.56        1.5243    1   1   9        12
                63.02          1.11        1.4750    1   2   5        12
                64.43          2.47        1.4462    0   0  12         2
                64.89          4.12        1.4370    3   0   0         6
                69.54          1.39        1.3518    0   2  10         6
                72.56          2.05        1.3028    1   2   8        12
                76.13          1.59        1.2504    1   1  12        12
                80.93          1.29        1.1879    2   1  10        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.