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 = 3.83 GPa
      Locality: Paradox Valley, Uravan District, Montrose County, Colorado, USA
      _database_code_amcsd 0020711

      CELL PARAMETERS:    4.7510   5.7290   3.5467   90.000   90.000   90.000
      SPACE GROUP: Pnnm      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     96.536
      Density (g/cm3):      7.353
      MAX. ABS. INTENSITY / VOLUME**2:      90.70984353    
      RIR:      4.017
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                24.34         12.65        3.6571    1   1   0         4
                29.62         15.06        3.0156    0   1   1         4
                31.22          5.97        2.8645    0   2   0         2
                31.48         49.80        2.8421    1   0   1         4
                35.25        100.00        2.5460    1   1   1         8
                36.63         82.21        2.4531    1   2   0         4
                37.87         10.75        2.3755    2   0   0         2
                41.14          6.85        2.1943    2   1   0         4
                44.93         11.27        2.0175    1   2   1         8
                48.80         66.96        1.8661    2   1   1         8
                49.87          6.23        1.8285    2   2   0         4
                51.54         27.67        1.7734    0   0   2         2
                51.58          8.82        1.7719    1   3   0         4
                54.58         32.27        1.6814    0   3   1         4
                56.63          8.93        1.6253    2   2   1         8
                57.78          1.56        1.5956    1   1   2         8
                58.20         14.35        1.5851    1   3   1         8
                60.67         10.80        1.5264    3   1   0         4
                61.50          1.21        1.5078    0   2   2         4
                62.39          1.23        1.4884    2   3   0         4
                64.43          1.28        1.4461    3   0   1         4
                64.88         25.68        1.4372    1   2   2         8
                65.13          2.77        1.4323    0   4   0         2
                65.71          3.88        1.4211    2   0   2         4
                66.71          7.75        1.4021    3   1   1         8
                67.59          6.82        1.3860    3   2   0         4
                67.96          2.59        1.3793    2   1   2         8
                68.35          2.91        1.3724    2   3   1         8
                73.34          2.74        1.2909    3   2   1         8
                74.54          2.84        1.2730    2   2   2         8
                75.91          4.34        1.2534    1   3   2         8
                77.88         10.91        1.2266    2   4   0         4
                80.94          2.78        1.1877    4   0   0         2
                83.04          2.15        1.1630    4   1   0         4
                83.58          7.08        1.1569    3   1   2         8
                83.94          2.60        1.1528    3   3   1         8
                84.44          1.83        1.1472    1   0   3         4
                86.52          5.52        1.1249    1   1   3         8
                87.56          2.29        1.1142    0   4   2         4
                87.60          1.09        1.1139    1   5   0         4
                89.81          5.64        1.0920    3   2   2         8
                89.99          3.78        1.0903    0   5   1         4
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.