Calcite
      Antao S M, Hassan I
      The Canadian Mineralogist 48 (2010) 1225-1236
      Temperature dependence of the structural parameters
      in the transformation of aragonite to calcite,
      as determined from in situ synchrotron powder X-ray-diffraction data
      Locality: Cuenca, Spain
      Note: T = 620 C
      Note: P = 101 kPa
      _database_code_amcsd 0017865

      CELL PARAMETERS:    4.9764   4.9764  17.3886   90.000   90.000  120.000
      SPACE GROUP: R-3c      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    372.929
      Density (g/cm3):      2.674
      MAX. ABS. INTENSITY / VOLUME**2:      23.77630971    
      RIR:      2.896
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                23.03          8.05        3.8613    0   1   2         6
                29.18        100.00        3.0606    1   0   4         6
                30.85          1.54        2.8981    0   0   6         2
                36.10         14.12        2.4882    1   1   0         6
                39.41         13.47        2.2864    1   1   3        12
                43.26         12.49        2.0916    2   0   2         6
                46.81         16.45        1.9407    0   1   8         6
                47.07          5.43        1.9307    0   2   4         6
                48.20         16.21        1.8879    1   1   6        12
                56.76          1.99        1.6218    2   1   1        12
                57.57          7.30        1.6011    1   2   2        12
                60.50          1.92        1.5303    2   0   8         6
                60.69          1.36        1.5260    1   1   9        12
                60.72          3.79        1.5253    2   1   4        12
                63.02          1.06        1.4751    1   2   5        12
                64.28          2.22        1.4490    0   0  12         2
                64.91          3.46        1.4366    3   0   0         6
                69.46          1.48        1.3532    0   2  10         6
                72.52          1.72        1.3035    1   2   8        12
                76.00          1.39        1.2522    1   1  12        12
                80.86          1.42        1.1888    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.