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 = 540 C
      Note: P = 101 kPa
      _database_code_amcsd 0017861

      CELL PARAMETERS:    4.9771   4.9771  17.3369   90.000   90.000  120.000
      SPACE GROUP: R-3c      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    371.925
      Density (g/cm3):      2.681
      MAX. ABS. INTENSITY / VOLUME**2:      24.21347887    
      RIR:      2.941
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                23.04          8.04        3.8595    0   1   2         6
                29.22        100.00        3.0563    1   0   4         6
                30.95          1.65        2.8895    0   0   6         2
                36.09         14.06        2.4885    1   1   0         6
                39.42         14.30        2.2856    1   1   3        12
                43.26         12.79        2.0915    2   0   2         6
                46.93         16.88        1.9362    0   1   8         6
                47.09          5.52        1.9297    0   2   4         6
                48.26         16.77        1.8856    1   1   6        12
                56.76          2.21        1.6220    2   1   1        12
                57.57          7.63        1.6011    1   2   2        12
                60.59          1.98        1.5281    2   0   8         6
                60.73          3.97        1.5250    2   1   4        12
                60.81          1.54        1.5233    1   1   9        12
                63.05          1.19        1.4745    1   2   5        12
                64.50          2.41        1.4447    0   0  12         2
                64.90          3.80        1.4368    3   0   0         6
                69.60          1.58        1.3509    0   2  10         6
                72.60          1.83        1.3022    1   2   8        12
                76.20          1.46        1.2494    1   1  12        12
                80.99          1.54        1.1872    2   1  10        12
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.