Dolomite
Diffraction data computed using the structure from the paper listed below,
along with the cell parameters refined from the powder pattern for R050370
      Antao S M, Mulder W H, Hassan I, Crichton W A, Parise J B
      American Mineralogist 89 (2004) 1142-1147
      Cation disorder in dolomite, CaMg(CO3)2, and its influence on the
      aragonite+magnesite - dolomite reaction boundary
      Sample: P = 3 GPa, T = 925 K

      CELL PARAMETERS:   4.816956   4.816956   16.07338   90.00000   90.00000   120.0000
      SPACE GROUP: R-3
      X-RAY WAVELENGTH:     1.541838
               2-THETA      INTENSITY    D-SPACING   H   K   L
                22.05          1.25        4.0378    1   0   1
                24.07          6.78        3.7025    0   1   2
                30.93        100.00        2.8941    1   0   4
                33.48          5.56        2.6789    0   0   6
                35.27          9.68        2.5463    0   1   5
                37.36          9.20        2.4085    1   1   0
                41.11         18.97        2.1967    1   1   3
                41.11          9.58        2.1967    2  -1   3
                43.78          6.35        2.0685    0   2   1
                44.91         11.37        2.0189    2   0   2
                49.23          2.98        1.8513    0   2   4
                50.42         11.10        1.8102    0   1   8
                51.00          6.01        1.7910    1   1   6
                51.00         12.34        1.7910    2  -1   6
                51.15          1.66        1.7859    0   0   9
                58.85          1.40        1.5692    3  -1   1
                58.85          1.03        1.5692    2   1   1
                59.77          3.98        1.5472   -1   3   2
                63.36          3.01        1.4678    3  -1   4
                63.36          1.30        1.4678    2   1   4
                64.38          1.27        1.4470    2   0   8
                65.01          2.31        1.4346    2  -1   9
                65.98          1.76        1.4156   -1   3   5
                67.33          5.08        1.3905    3   0   0
                70.26          1.77        1.3394    0   0  12
                74.51          1.61        1.2732    0   2  10
                76.83          1.28        1.2404    1   2   8
                76.83          1.28        1.2404    1   2   8
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.