Ferroselite
      Lavina B, Downs R T, Sinogeikin S
      Crystals 8 (2018) 289; doi:10.3390/cryst807
      The structure of ferroselite, FeSe2, at pressures up to 46 GPa
      and temperatures down to 50 K: A single-crystal micro-diffraction analysis
      Note: P = 46 GPa
      Locality: Paradox Valley, Uravan District, Montrose County, Colorado, USA
      _database_code_amcsd 0020716

      CELL PARAMETERS:    4.4040   5.3910   3.3185   90.000   90.000   90.000
      SPACE GROUP: Pnnm      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     78.788
      Density (g/cm3):      9.009
      MAX. ABS. INTENSITY / VOLUME**2:      116.8052716    
      RIR:      4.221
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                26.13         11.74        3.4106    1   1   0         4
                31.66         14.13        2.8260    0   1   1         4
                33.24          5.16        2.6955    0   2   0         2
                33.82         51.22        2.6503    1   0   1         4
                37.83        100.00        2.3784    1   1   1         8
                39.18         80.98        2.2991    1   2   0         4
                40.99          9.83        2.2020    2   0   0         2
                44.44          7.53        2.0385    2   1   0         4
                48.15         10.83        1.8898    1   2   1         8
                52.70         63.34        1.7370    2   1   1         8
                53.75          6.68        1.7053    2   2   0         4
                55.21          9.44        1.6638    1   3   0         4
                55.37         27.64        1.6593    0   0   2         2
                58.40         34.08        1.5802    0   3   1         4
                61.10          9.84        1.5168    2   2   1         8
                62.22          1.46        1.4921    1   1   2         8
                62.44         13.28        1.4873    1   3   1         8
                65.95         11.03        1.4164    3   1   0         4
                66.13          1.04        1.4130    0   2   2         4
                67.25          1.27        1.3922    2   3   0         4
                69.78          2.82        1.3477    0   4   0         2
                69.92         26.12        1.3454    1   2   2         8
                70.09          1.55        1.3425    3   0   1         4
                71.15          3.76        1.3252    2   0   2         4
                72.57          7.40        1.3027    3   1   1         8
                73.45          6.40        1.2892    3   2   0         4
                73.61          3.02        1.2869    2   1   2         8
                73.81          3.15        1.2838    2   3   1         8
                79.81          3.14        1.2017    3   2   1         8
                80.82          3.33        1.1892    2   2   2         8
                82.02          5.03        1.1749    1   3   2         8
                84.23         11.64        1.1495    2   4   0         4
                88.89          2.74        1.1010    4   0   0         2
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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.