Ankerite
      Beran A, Zemann J
      Tschermaks Mineralogische und Petrographische Mitteilungen 24 (1977) 279-286
      Refinement and comparison of the crystal structures of a dolomite and of an Fe-rich ankerite
      Locality: Erzberg, Etage Dreikonig, Styria, Austria
      _database_code_amcsd 0015665

      CELL PARAMETERS:    4.8300   4.8300  16.1670   90.000   90.000  120.000
      SPACE GROUP: R-3       
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    326.629
      Density (g/cm3):      3.150
      MAX. ABS. INTENSITY / VOLUME**2:      31.63911103    
      RIR:      3.270
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                16.45          3.02        5.3890    0   0   3         2
                21.95          1.61        4.0496    1   0   1         6
                23.95         15.76        3.7150    0   1   2         6
                30.76        100.00        2.9066    1   0   4         6
                33.25          1.04        2.6945    0   0   6         2
                37.23         15.98        2.4150    1   1   0         6
                40.95          7.64        2.2038    1   1   3         6
                40.95         11.14        2.2038    2  -1   3         6
                44.76         16.47        2.0248    2   0   2         6
                49.04          7.22        1.8575    0   2   4         6
                50.13         18.67        1.8196    0   1   8         6
                50.77         14.75        1.7984    2  -1   6         6
                50.77          9.49        1.7984    1   1   6         6
                58.67          2.49        1.5735    2   1   1         6
                59.58          3.85        1.5516    1   2   2         6
                59.58          7.00        1.5516   -1   3   2         6
                61.49          1.50        1.5080    1   0  10         6
                63.15          4.39        1.4724    3  -1   4         6
                63.15          3.52        1.4724    2   1   4         6
                64.07          3.49        1.4533    2   0   8         6
                64.67          1.88        1.4413    1   1   9         6
                67.13          8.10        1.3943    3   0   0         6
                69.81          3.54        1.3472    0   0  12         2
                74.13          2.97        1.2791    0   2  10         6
                76.50          2.91        1.2452    1   2   8         6
                76.50          1.16        1.2452   -1   3   8         6
                81.88          1.98        1.1766    1   1  12         6
                86.00          1.27        1.1303    2   1  10         6
                86.00          1.48        1.1303    3  -1  10         6
                87.47          1.35        1.1151    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.