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 = 556 C
      Note: P = 101 kPa
      _database_code_amcsd 0017862

      CELL PARAMETERS:    4.9769   4.9769  17.3479   90.000   90.000  120.000
      SPACE GROUP: R-3c      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    372.131
      Density (g/cm3):      2.679
      MAX. ABS. INTENSITY / VOLUME**2:      24.07307943    
      RIR:      2.926
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                23.04          8.07        3.8599    0   1   2         6
                29.21        100.00        3.0572    1   0   4         6
                30.93          1.62        2.8913    0   0   6         2
                36.09         14.06        2.4885    1   1   0         6
                39.42         14.13        2.2858    1   1   3        12
                43.26         12.71        2.0915    2   0   2         6
                46.90         16.76        1.9371    0   1   8         6
                47.09          5.49        1.9299    0   2   4         6
                48.25         16.63        1.8861    1   1   6        12
                56.76          2.15        1.6219    2   1   1        12
                57.57          7.53        1.6011    1   2   2        12
                60.57          1.96        1.5286    2   0   8         6
                60.73          3.92        1.5250    2   1   4        12
                60.78          1.50        1.5239    1   1   9        12
                63.04          1.16        1.4746    1   2   5        12
                64.45          2.36        1.4457    0   0  12         2
                64.90          3.72        1.4367    3   0   0         6
                69.57          1.55        1.3514    0   2  10         6
                72.58          1.80        1.3025    1   2   8        12
                76.15          1.44        1.2500    1   1  12        12
                80.96          1.50        1.1875    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.