Ankerite
      Ross N L, Reeder R J
      American Mineralogist 77 (1992) 412-421
      High-pressure structural study of dolomite and ankerite
      P = 2.97 GPa
      _database_code_amcsd 0001451

      CELL PARAMETERS:    4.8070   4.8070  15.8810   90.000   90.000  120.000
      SPACE GROUP: R-3       
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    317.802
      Density (g/cm3):      3.249
      MAX. ABS. INTENSITY / VOLUME**2:      31.73061371    
      RIR:      3.180
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                16.75          3.14        5.2937    0   0   3         2
                22.07          2.09        4.0269    1   0   1         6
                24.14         17.45        3.6870    0   1   2         6
                31.13        100.00        2.8731    1   0   4         6
                33.87          1.00        2.6468    0   0   6         2
                37.42         16.07        2.4035    1   1   0         6
                41.25         11.90        2.1885    2  -1   3         6
                41.25          7.70        2.1885    1   1   3         6
                45.02         16.78        2.0135    2   0   2         6
                49.44          7.20        1.8435    0   2   4         6
                50.97         17.87        1.7918    0   1   8         6
                51.35          9.67        1.7794    1   1   6         6
                51.35         14.68        1.7794    2  -1   6         6
                58.99          2.51        1.5658    2   1   1         6
                59.93          6.94        1.5434   -1   3   2         6
                59.93          3.72        1.5434    1   2   2         6
                62.61          1.45        1.4838    1   0  10         6
                63.61          4.42        1.4628    3  -1   4         6
                63.61          3.37        1.4628    2   1   4         6
                64.91          3.29        1.4366    2   0   8         6
                65.64          1.93        1.4224    1   1   9         6
                67.50          8.16        1.3877    3   0   0         6
                71.26          3.32        1.3234    0   0  12         2
                75.26          2.80        1.2626    0   2  10         6
                77.39          2.76        1.2331    1   2   8         6
                77.39          1.10        1.2331   -1   3   8         6
                83.36          1.75        1.1593    1   1  12         6
                87.21          1.32        1.1177    3  -1  10         6
                87.21          1.21        1.1177    2   1  10         6
                88.11          1.31        1.1087    1   3   4         6
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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.