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: T = 116 K, P = 3.64 GPa
      Locality: Paradox Valley, Uravan District, Montrose County, Colorado, USA
      _database_code_amcsd 0020721

      CELL PARAMETERS:    4.7446   5.7720   3.5512   90.000   90.000   90.000
      SPACE GROUP: Pnnm      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     97.253
      Density (g/cm3):      7.299
      MAX. ABS. INTENSITY / VOLUME**2:      92.11751189    
      RIR:      4.109
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                24.28         12.67        3.6652    1   1   0         4
                29.53         15.47        3.0246    0   1   1         4
                30.99          6.48        2.8860    0   2   0         2
                31.47         49.12        2.8430    1   0   1         4
                35.19        100.00        2.5504    1   1   1         8
                36.44         84.17        2.4657    1   2   0         4
                37.93         10.92        2.3723    2   0   0         2
                41.14          6.71        2.1942    2   1   0         4
                44.75         11.81        2.0254    1   2   1         8
                48.79         69.81        1.8666    2   1   1         8
                49.75          6.22        1.8326    2   2   0         4
                51.24          9.19        1.7830    1   3   0         4
                51.47         28.83        1.7756    0   0   2         2
                54.22         33.90        1.6917    0   3   1         4
                56.51          9.24        1.6286    2   2   1         8
                57.69          1.66        1.5980    1   1   2         8
                57.87         16.06        1.5934    1   3   1         8
                60.72         11.36        1.5253    3   1   0         4
                61.30          1.40        1.5123    0   2   2         4
                62.12          1.35        1.4943    2   3   0         4
                64.50          1.31        1.4447    3   0   1         4
                64.59          3.09        1.4430    0   4   0         2
                64.69         27.97        1.4409    1   2   2         8
                65.68          4.25        1.4215    2   0   2         4
                66.74          8.42        1.4015    3   1   1         8
                67.54          7.54        1.3869    3   2   0         4
                67.91          2.72        1.3803    2   1   2         8
                68.07          3.10        1.3773    2   3   1         8
                73.27          2.91        1.2919    3   2   1         8
                74.39          3.01        1.2752    2   2   2         8
                75.58          4.79        1.2581    1   3   2         8
                77.41         12.52        1.2328    2   4   0         4
                81.07          3.18        1.1861    4   0   0         2
                83.14          2.36        1.1619    4   1   0         4
                83.56          7.98        1.1570    3   1   2         8
                83.72          3.15        1.1553    3   3   1         8
                84.32          2.07        1.1485    1   0   3         4
                84.80          1.04        1.1433    2   3   2         8
                86.37          6.32        1.1264    1   1   3         8
                86.83          1.30        1.1217    1   5   0         4
                87.01          2.71        1.1198    0   4   2         4
                89.21          4.68        1.0979    0   5   1         4
                89.71          6.68        1.0930    3   2   2         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.