Marcasite
      Buerger M J
      American Mineralogist 16 (1931) 361-395
      The crystal structure of marcasite
      Locality: Joplin, Missouri, USA
      _database_code_amcsd 0000008

      CELL PARAMETERS:    3.3700   4.4400   5.3900   90.000   90.000   90.000
      SPACE GROUP: Pmnn      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     80.649
      Density (g/cm3):      4.940
      MAX. ABS. INTENSITY / VOLUME**2:      37.07801807    
      RIR:      2.444
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                26.00         66.41        3.4270    0   1   1         4
                31.30          2.99        2.8575    1   0   1         4
                33.24         28.93        2.6950    0   0   2         2
                33.38        100.00        2.6843    1   1   0         4
                37.43         44.24        2.4028    1   1   1         8
                39.10         38.23        2.3038    0   1   2         4
                44.12          4.29        2.0527    0   2   1         4
                47.83         37.44        1.9019    1   1   2         8
                52.18         72.76        1.7531    1   2   1         8
                53.48         12.76        1.7135    0   2   2         4
                54.45         25.17        1.6850    2   0   0         2
                55.15         16.93        1.6655    0   1   3         4
                58.19         28.73        1.5854    1   0   3         4
                60.63          5.61        1.5274    1   2   2         8
                61.31          9.59        1.5121    2   1   1         8
                62.17          7.58        1.4931    1   1   3         8
                65.31          6.21        1.4287    2   0   2         4
                65.39         15.45        1.4272    0   3   1         4
                69.06         10.56        1.3600    2   1   2         8
                71.83          2.03        1.3142    1   3   1         8
                72.59          1.52        1.3024    2   2   1         8
                72.92          1.93        1.2973    0   3   2         4
                73.39          1.11        1.2902    1   2   3         8
                79.10          6.31        1.2107    1   3   2         8
                79.61          2.88        1.2043    1   1   4         8
                79.83          6.12        1.2014    2   2   2         8
                81.21          8.70        1.1845    2   1   3         8
                84.02          9.55        1.1519    0   2   4         4
                87.98          2.30        1.1100    0   4   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.