Columbite-(Mn)
      Tarantino S C, Zema M
      American Mineralogist 90 (2005) 1291-1300
      Mixing and ordering behavior in manganocolumbite-ferrocolumbite solid solution:
      A single-crystal X-ray diffraction study
      Sample: KRA n4 Qm=0.922 from Kragero, Norway
      Sample: Annealed at T = 700 C for t = 20 m
      Note: Occupancies calculated assuming complete Fe/Mn disorder
      _database_code_amcsd 0003865

      CELL PARAMETERS:   14.3800   5.7450   5.0880   90.000   90.000   90.000
      SPACE GROUP: Pbcn      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    420.335
      Density (g/cm3):      5.465
      MAX. ABS. INTENSITY / VOLUME**2:      124.5475639    
      RIR:      7.421
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                12.31          5.29        7.1900    2   0   0         2
                16.62          1.68        5.3350    1   1   0         4
                24.17          6.46        3.6820    1   1   1         8
                24.18         25.22        3.6805    3   1   0         4
                24.77          3.20        3.5950    4   0   0         2
                29.96        100.00        2.9821    3   1   1         8
                31.14          9.37        2.8725    0   2   0         2
                35.28         12.97        2.5440    0   0   2         2
                35.90         13.62        2.5014    0   2   1         4
                37.53          6.86        2.3967    6   0   0         2
                40.13          2.78        2.2471    3   0   2         4
                40.69          5.08        2.2176    3   2   1         8
                43.23          7.38        2.0927    3   1   2         8
                44.11          1.26        2.0533    4   2   1         8
                47.76          7.06        1.9045    0   2   2         4
                49.53          6.54        1.8403    6   2   0         4
                50.48          1.38        1.8081    7   1   1         8
                51.38         12.91        1.7783    3   3   0         4
                52.45         16.01        1.7445    6   0   2         4
                52.91         20.39        1.7305    6   2   1         8
                54.67          1.28        1.6787    3   3   1         8
                60.06         13.13        1.5403    3   1   3         8
                62.27          4.96        1.4910    6   2   2         8
                63.10         11.30        1.4734    9   1   1         8
                63.72          7.15        1.4604    0   2   3         4
                63.87         11.79        1.4575    3   3   2         8
                67.80          5.41        1.3822    0   4   1         4
                71.66          1.99        1.3170    9   1   2         8
                74.61          1.45        1.2720    0   0   4         2
                76.36          2.01        1.2471    6   2   3         8
                77.86          2.90        1.2268    9   3   0         4
                79.77          1.12        1.2022    3   1   4         8
                80.08          2.24        1.1983   12   0   0         2
                80.16          5.68        1.1974    6   4   1         8
                83.03          1.11        1.1631    0   2   4         4
                85.12          3.68        1.1399    9   1   3         8
                86.65          3.06        1.1236    6   0   4         4
                87.25          1.49        1.1173    3   5   0         4
                88.47          4.80        1.1050    9   3   2         8
                89.40          2.01        1.0960    0   4   3         4
                89.88          1.81        1.0913    3   5   1         8
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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.