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 = 434 C
      Note: P = 101 kPa
      _database_code_amcsd 0017856

      CELL PARAMETERS:    4.9757   4.9757  17.2730   90.000   90.000  120.000
      SPACE GROUP: R-3c      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    370.345
      Density (g/cm3):      2.692
      MAX. ABS. INTENSITY / VOLUME**2:      24.65496686    
      RIR:      2.982
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                23.07         10.21        3.8558    0   1   2         6
                29.28        100.00        3.0502    1   0   4         6
                31.07          1.57        2.8788    0   0   6         2
                36.10         14.42        2.4878    1   1   0         6
                39.46         16.38        2.2838    1   1   3        12
                43.28         14.30        2.0905    2   0   2         6
                47.08         18.31        1.9304    0   1   8         6
                47.14          6.47        1.9279    0   2   4         6
                48.35         20.13        1.8823    1   1   6        12
                56.78          2.29        1.6215    2   1   1        12
                57.48          1.31        1.6033    1   0  10         6
                57.59          9.01        1.6005    1   2   2        12
                60.73          2.54        1.5251    2   0   8         6
                60.78          5.34        1.5239    2   1   4        12
                60.97          1.91        1.5196    1   1   9        12
                63.11          1.28        1.4732    1   2   5        12
                64.77          2.95        1.4394    0   0  12         2
                64.92          5.27        1.4364    3   0   0         6
                69.78          2.10        1.3477    0   2  10         6
                72.73          2.68        1.3002    1   2   8        12
                76.45          2.03        1.2459    1   1  12        12
                81.17          2.20        1.1850    2   1  10        12
                84.03          1.07        1.1518    1   3   4        12
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.