Romarchite
      Pannetier J, Denes G
      Acta Crystallographica B36 (1980) 2763-2765
      Tin(II) oxide: structure refinement and thermal expansion
      _database_code_amcsd 0009724

      CELL PARAMETERS:    3.8029   3.8029   4.8382   90.000   90.000   90.000
      SPACE GROUP: P4/nmm    
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     69.970
      Density (g/cm3):      6.393
      MAX. ABS. INTENSITY / VOLUME**2:      306.6022197    
      RIR:     15.616
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                18.34          4.45        4.8382    0   0   1         2
                29.88        100.00        2.9899    1   0   1         8
                33.32         27.63        2.6891    1   1   0         4
                37.17         10.01        2.4191    0   0   2         2
                47.84         16.17        1.9015    2   0   0         4
                50.76         26.09        1.7985    1   1   2         8
                57.43         28.27        1.6045    2   1   1        16
                62.09          8.56        1.4949    2   0   2         8
                62.56         10.18        1.4847    1   0   3         8
                69.97          4.46        1.3445    2   2   0         4
                77.91          5.25        1.2262    3   0   1         8
                79.19          1.38        1.2096    0   0   4         2
                79.74          4.07        1.2026    3   1   0         8
                81.99          3.69        1.1752    2   2   2         8
                82.41          8.56        1.1702    2   1   3        16
                88.67          2.84        1.1031    1   1   4         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.