Ankerite
      Ross N L, Reeder R J
      American Mineralogist 77 (1992) 412-421
      High-pressure structural study of dolomite and ankerite
      P = 0.00 GPa
      _database_code_amcsd 0001449

      CELL PARAMETERS:    4.8360   4.8360  16.1860   90.000   90.000  120.000
      SPACE GROUP: R-3       
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    327.826
      Density (g/cm3):      3.150
      MAX. ABS. INTENSITY / VOLUME**2:      31.46746899    
      RIR:      3.253
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                16.43          3.33        5.3953    0   0   3         2
                21.92          2.10        4.0546    1   0   1         6
                23.92         16.72        3.7196    0   1   2         6
                30.72        100.00        2.9101    1   0   4         6
                37.18         16.04        2.4180    1   1   0         6
                40.90         11.88        2.2065    2  -1   3         6
                40.90          7.02        2.2065    1   1   3         6
                44.70         16.67        2.0273    2   0   2         6
                48.98          7.26        1.8598    0   2   4         6
                50.07         18.54        1.8218    0   1   8         6
                50.70          9.71        1.8006    1   1   6         6
                50.70         14.89        1.8006    2  -1   6         6
                52.01          1.04        1.7583    2   0   5         6
                58.59          2.72        1.5754    2   1   1         6
                59.50          7.05        1.5535   -1   3   2         6
                59.50          3.86        1.5535    1   2   2         6
                61.41          1.57        1.5098    1   0  10         6
                63.06          4.43        1.4742    3  -1   4         6
                63.06          3.49        1.4742    2   1   4         6
                63.99          3.47        1.4550    2   0   8         6
                64.58          2.12        1.4431    1   1   9         6
                67.04          8.04        1.3960    3   0   0         6
                69.72          3.49        1.3488    0   0  12         2
                74.02          2.99        1.2806    0   2  10         6
                76.39          1.16        1.2467   -1   3   8         6
                76.39          2.87        1.2467    1   2   8         6
                81.76          1.92        1.1780    1   1  12         6
                85.87          1.46        1.1317    3  -1  10         6
                85.87          1.29        1.1317    2   1  10         6
                87.34          1.32        1.1165    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.