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 = 24.4 GPa
      Locality: Paradox Valley, Uravan District, Montrose County, Colorado, USA
      _database_code_amcsd 0020714

      CELL PARAMETERS:    4.5550   5.5240   3.4090   90.000   90.000   90.000
      SPACE GROUP: Pnnm      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     85.777
      Density (g/cm3):      8.275
      MAX. ABS. INTENSITY / VOLUME**2:      106.9208046    
      RIR:      4.207
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                25.34         12.02        3.5143    1   1   0         4
                30.82         14.84        2.9010    0   1   1         4
                32.41          5.78        2.7620    0   2   0         2
                32.81         50.47        2.7293    1   0   1         4
                36.73        100.00        2.4469    1   1   1         8
                38.10         82.34        2.3617    1   2   0         4
                39.57         10.47        2.2775    2   0   0         2
                42.95          7.27        2.1056    2   1   0         4
                46.79         11.28        1.9414    1   2   1         8
                50.98         67.13        1.7914    2   1   1         8
                52.05          6.44        1.7572    2   2   0         4
                53.69          9.31        1.7071    1   3   0         4
                53.78         28.40        1.7045    0   0   2         2
                56.83         33.91        1.6201    0   3   1         4
                59.15          9.81        1.5619    2   2   1         8
                60.35          1.53        1.5336    1   1   2         8
                60.67         14.80        1.5264    1   3   1         8
                63.55         11.51        1.4640    3   1   0         4
                64.21          1.22        1.4505    0   2   2         4
                65.15          1.36        1.4319    2   3   0         4
                67.54          1.53        1.3870    3   0   1         4
                67.80         27.46        1.3821    1   2   2         8
                67.87          3.01        1.3810    0   4   0         2
                68.79          4.11        1.3646    2   0   2         4
                69.93          8.05        1.3452    3   1   1         8
                70.82          7.09        1.3305    3   2   0         4
                71.17          2.97        1.3248    2   1   2         8
                71.46          3.20        1.3202    2   3   1         8
                76.92          3.06        1.2395    3   2   1         8
                78.12          3.20        1.2235    2   2   2         8
                79.45          4.99        1.2062    1   3   2         8
                81.51         12.31        1.1809    2   4   0         4
                85.22          3.03        1.1387    4   0   0         2
                87.45          2.63        1.1153    4   1   0         4
                87.92          8.50        1.1106    3   1   2         8
                88.19          2.92        1.1079    3   3   1         8
                88.73          2.22        1.1025    1   0   3         4
                89.36          1.11        1.0964    2   3   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.