Stibarsen
Diffraction data computed using the structure from the paper listed below,
along with the cell parameters refined from the powder pattern for R070299
      Bayless P
      American Mineralogist 76 (1991) 257-265
      Crystal chemistry and crystallography of some minerals in the tetradymite group

      CELL PARAMETERS:   4.025771   4.025771   10.82748   90.00000   90.00000   120.0000
      SPACE GROUP: R-3m
      X-RAY WAVELENGTH:     1.541838
               2-THETA      INTENSITY    D-SPACING   H   K   L
                24.68          2.67        3.6092    0   0   3
                26.88          6.40        3.3186    1   0   1
                30.51        100.00        2.9312    0   1   2
                42.27         38.93        2.1381    1   0   4
                45.03         31.93        2.0129    1   1   0
                50.57          7.37        1.8046    0   0   6
                52.01          1.67        1.7580    1   1   3
                55.35         16.37        1.6593    2   0   2
                63.45         10.32        1.4656    0   2   4
                69.99         14.81        1.3437    1   1   6
                74.01         12.29        1.2804    1   2   2
                75.29          5.83        1.2617    0   1   8
                81.14          9.22        1.1848    2   1   4
                83.06          4.30        1.1621    3   0   0
                83.06          4.30        1.1621    3   0   0
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.