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 = 420 C
      Note: P = 101 kPa
      _database_code_amcsd 0017855

      CELL PARAMETERS:    4.9748   4.9748  17.2700   90.000   90.000  120.000
      SPACE GROUP: R-3c      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    370.147
      Density (g/cm3):      2.694
      MAX. ABS. INTENSITY / VOLUME**2:      24.47089557    
      RIR:      2.958
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                23.07         11.17        3.8551    0   1   2         6
                29.29        100.00        3.0497    1   0   4         6
                31.07          1.48        2.8783    0   0   6         2
                36.11         14.60        2.4874    1   1   0         6
                39.46         16.62        2.2834    1   1   3        12
                43.29         14.65        2.0901    2   0   2         6
                47.09         18.49        1.9300    0   1   8         6
                47.15          6.78        1.9276    0   2   4         6
                48.36         21.01        1.8820    1   1   6        12
                56.79          2.17        1.6212    2   1   1        12
                57.49          1.49        1.6030    1   0  10         6
                57.60          9.29        1.6002    1   2   2        12
                60.74          2.71        1.5248    2   0   8         6
                60.79          5.76        1.5236    2   1   4        12
                60.98          1.91        1.5193    1   1   9        12
                63.12          1.20        1.4729    1   2   5        12
                64.78          3.00        1.4392    0   0  12         2
                64.93          5.57        1.4361    3   0   0         6
                69.80          2.22        1.3474    0   2  10         6
                72.74          2.94        1.3000    1   2   8        12
                76.47          2.20        1.2457    1   1  12        12
                81.19          2.35        1.1848    2   1  10        12
                84.05          1.14        1.1516    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.