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=1 from Kragero, Norway
      Sample: Annealed at T = 800 C for t = 24 h
      Note: Occupancies calculated assuming complete Fe/Mn disorder
      _database_code_amcsd 0003867

      CELL PARAMETERS:   14.3950   5.7530   5.0830   90.000   90.000   90.000
      SPACE GROUP: Pbcn      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    420.946
      Density (g/cm3):      5.462
      MAX. ABS. INTENSITY / VOLUME**2:      125.5338985    
      RIR:      7.484
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                12.30          7.12        7.1975    2   0   0         2
                16.59          2.18        5.3422    1   1   0         4
                24.15         24.70        3.6849    3   1   0         4
                24.17          8.55        3.6824    1   1   1         8
                24.74          4.26        3.5988    4   0   0         2
                29.95        100.00        2.9834    3   1   1         8
                31.09          9.56        2.8765    0   2   0         2
                35.32         12.78        2.5415    0   0   2         2
                35.87         13.36        2.5034    0   2   1         4
                37.49          6.85        2.3992    6   0   0         2
                40.15          2.76        2.2459    3   0   2         4
                40.65          5.05        2.2195    3   2   1         8
                43.24          7.12        2.0921    3   1   2         8
                44.06          1.63        2.0551    4   2   1         8
                47.75          7.23        1.9046    0   2   2         4
                49.47          6.68        1.8424    6   2   0         4
                50.43          1.86        1.8096    7   1   1         8
                51.31         12.82        1.7807    3   3   0         4
                52.45         15.91        1.7446    6   0   2         4
                52.85         20.05        1.7322    6   2   1         8
                54.61          1.43        1.6806    3   3   1         8
                60.10         13.08        1.5394    3   1   3         8
                62.24          5.05        1.4917    6   2   2         8
                63.03         11.26        1.4747    9   1   1         8
                63.75          7.03        1.4599    0   2   3         4
                63.82         11.73        1.4584    3   3   2         8
                67.70          5.49        1.3839    0   4   1         4
                71.61          1.97        1.3177    9   1   2         8
                74.70          1.45        1.2708    0   0   4         2
                76.36          1.96        1.2472    6   2   3         8
                77.75          2.89        1.2283    9   3   0         4
                79.84          1.11        1.2013    3   1   4         8
                79.98          2.22        1.1996   12   0   0         2
                80.05          5.77        1.1988    6   4   1         8
                83.09          1.13        1.1624    0   2   4         4
                85.10          3.69        1.1400    9   1   3         8
                86.71          3.04        1.1230    6   0   4         4
                87.10          1.56        1.1189    3   5   0         4
                88.39          4.77        1.1059    9   3   2         8
                89.35          2.03        1.0965    0   4   3         4
                89.74          1.73        1.0927    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.