Kutnohorite
Diffraction data computed using the structure from the paper listed below,
along with the cell parameters refined from the powder pattern for R060473
      Peacor D R, Essene E J, Gaines A M
      American Mineralogist 72 (1987) 319-328
      Petrologic and crystal-chemical implications of cation order-disorder in
      kutnahorite (CaMn(CO3)2)
      Sample: Sterling Hill kutnahorite

      CELL PARAMETERS:   4.894000   4.894000   16.50000   90.00000   90.00000   120.0000
      SPACE GROUP: R-3
      X-RAY WAVELENGTH:     1.541838
               2-THETA      INTENSITY    D-SPACING   H   K   L
                16.06          1.74        5.5355    0   0   3
                21.59          1.18        4.1249    1   0   1
                23.52         18.11        3.7891    0   1   2
                30.10        100.00        2.9727    1   0   4
                36.58         16.68        2.4586    1   1   0
                40.16         11.01        2.2469    2  -1   3
                40.16          6.97        2.2469    1   1   3
                43.93         16.58        2.0625    2   0   2
                48.05          7.80        1.8946    0   2   4
                48.83         19.09        1.8659    0   1   8
                49.62         10.61        1.8381    1   1   6
                49.62         13.43        1.8381    2  -1   6
                57.54          2.06        1.6020    2   1   1
                58.42          4.56        1.5801    1   2   2
                58.42          6.19        1.5801   -1   3   2
                59.78          1.60        1.5472    1   0  10
                61.83          3.87        1.5007    3  -1   4
                61.83          3.46        1.5007    2   1   4
                62.49          3.22        1.4863    2   0   8
                62.99          1.69        1.4758    1   1   9
                65.80          7.71        1.4195    3   0   0
                67.71          3.48        1.3839    0   0  12
                72.13          2.65        1.3095    0   2  10
                74.61          2.30        1.2720    1   2   8
                74.61          1.42        1.2720   -1   3   8
                79.46          1.56        1.2060    1   1  12
                83.66          1.31        1.1558    2   1  10
                83.66          1.42        1.1558    3  -1  10
                85.45          1.02        1.1360    1   3   4
                85.45          1.02        1.1360    1   3   4
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.