Ferrocolumbite
      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: BRA n3 Qm=1 from S. Jose de Safira, Minas Gerais, Brazil
      _database_code_amcsd 0003826

      CELL PARAMETERS:   14.2877   5.7363   5.0561   90.000   90.000   90.000
      SPACE GROUP: Pbcn      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    414.391
      Density (g/cm3):      5.507
      MAX. ABS. INTENSITY / VOLUME**2:      123.4883621    
      RIR:      7.301
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                12.39          4.96        7.1438    2   0   0         2
                16.65          1.38        5.3233    1   1   0         4
                24.28          8.12        3.6660    1   1   1         8
                24.29         25.99        3.6643    3   1   0         4
                24.93          4.14        3.5719    4   0   0         2
                30.12        100.00        2.9670    3   1   1         8
                31.18          9.40        2.8681    0   2   0         2
                35.51         13.21        2.5280    0   0   2         2
                36.00         13.84        2.4947    0   2   1         4
                37.78          6.61        2.3813    6   0   0         2
                40.39          2.85        2.2330    3   0   2         4
                40.83          5.36        2.2099    3   2   1         8
                43.49          7.64        2.0809    3   1   2         8
                43.88          1.26        2.0635    4   0   2         4
                44.29          1.24        2.0453    4   2   1         8
                47.97          6.87        1.8965    0   2   2         4
                49.77          6.24        1.8321    6   2   0         4
                50.80          2.13        1.7974    7   1   1         8
                51.50         13.01        1.7744    3   3   0         4
                52.81         15.89        1.7334    6   0   2         4
                53.17         20.57        1.7225    6   2   1         8
                54.83          1.15        1.6743    3   3   1         8
                60.46         13.29        1.5312    3   1   3         8
                62.62          4.84        1.4835    6   2   2         8
                63.53         10.84        1.4644    9   1   1         8
                64.08          7.48        1.4531    0   2   3         4
                64.12         11.84        1.4524    3   3   2         8
                67.94          5.37        1.3797    0   4   1         4
                72.17          1.94        1.3090    9   1   2         8
                75.16          1.46        1.2640    0   0   4         2
                76.85          1.95        1.2404    6   2   3         8
                78.27          2.74        1.2214    9   3   0         4
                80.36          1.16        1.1949    3   1   4         8
                80.45          5.47        1.1938    6   4   1         8
                80.70          2.12        1.1906   12   0   0         2
                83.59          1.15        1.1567    0   2   4         4
                85.77          3.54        1.1328    9   1   3         8
                87.34          3.17        1.1165    6   0   4         4
                87.45          1.41        1.1154    3   5   0         4
                89.01          4.68        1.0998    9   3   2         8
                89.80          2.02        1.0922    0   4   3         4
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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.