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: RIO n5 Qm=1 from Rio Arriba Co., Globe Mine, U.S.A.
      _database_code_amcsd 0003849

      CELL PARAMETERS:   14.3434   5.7415   5.0665   90.000   90.000   90.000
      SPACE GROUP: Pbcn      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    417.240
      Density (g/cm3):      5.480
      MAX. ABS. INTENSITY / VOLUME**2:      123.7800925    
      RIR:      7.355
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                12.34          5.04        7.1717    2   0   0         2
                16.63          1.55        5.3303    1   1   0         4
                24.22         25.43        3.6741    3   1   0         4
                24.24          7.30        3.6723    1   1   1         8
                24.83          3.77        3.5859    4   0   0         2
                30.04        100.00        2.9743    3   1   1         8
                31.16          9.47        2.8707    0   2   0         2
                35.43         12.93        2.5333    0   0   2         2
                35.96         13.53        2.4977    0   2   1         4
                37.63          6.69        2.3906    6   0   0         2
                40.29          2.80        2.2385    3   0   2         4
                40.76          5.16        2.2138    3   2   1         8
                43.39          7.30        2.0856    3   1   2         8
                44.19          1.26        2.0495    4   2   1         8
                47.89          6.98        1.8994    0   2   2         4
                49.63          6.39        1.8370    6   2   0         4
                50.61          1.77        1.8034    7   1   1         8
                51.43         12.71        1.7768    3   3   0         4
                52.64         15.67        1.7386    6   0   2         4
                53.02         19.94        1.7270    6   2   1         8
                54.75          1.27        1.6767    3   3   1         8
                60.32         12.89        1.5345    3   1   3         8
                62.45          4.82        1.4872    6   2   2         8
                63.28         10.77        1.4696    9   1   1         8
                63.96          7.06        1.4556    0   2   3         4
                64.01         11.44        1.4546    3   3   2         8
                67.87          5.26        1.3810    0   4   1         4
                71.90          1.89        1.3132    9   1   2         8
                74.98          1.40        1.2666    0   0   4         2
                76.64          1.86        1.2433    6   2   3         8
                78.02          2.68        1.2247    9   3   0         4
                80.15          1.08        1.1975    3   1   4         8
                80.28          5.36        1.1958    6   4   1         8
                80.33          2.08        1.1953   12   0   0         2
                83.40          1.09        1.1588    0   2   4         4
                85.46          3.42        1.1362    9   1   3         8
                87.07          2.94        1.1192    6   0   4         4
                87.33          1.41        1.1165    3   5   0         4
                88.72          4.47        1.1026    9   3   2         8
                89.64          1.91        1.0937    0   4   3         4
                89.99          1.68        1.0904    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.