Arsenic
      Schiferl D, Barrett CS
      Journal of Applied Crystallography 2 (1969) 30-36
      The crystal structure of arsenic at 4.2, 78 and 299 K
      Sample: T = 4.2 K
      _database_code_amcsd 0012833

      CELL PARAMETERS:    3.7597   3.7597  10.4412   90.000   90.000  120.000
      SPACE GROUP: R-3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    127.817
      Density (g/cm3):      5.839
      MAX. ABS. INTENSITY / VOLUME**2:      200.5030358    
      RIR:     11.181
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                25.59         11.28        3.4804    0   0   3         2
                28.72          2.94        3.1084    1   0   1         6
                32.41        100.00        2.7627    0   1   2         6
                44.49         31.48        2.0366    1   0   4         6
                48.42         34.08        1.8799    1   1   0         6
                52.03         11.42        1.7578    0   1   5         6
                52.59          3.90        1.7402    0   0   6         2
                55.56          7.47        1.6540    1   1   3        12
                59.48         16.63        1.5542    2   0   2         6
                67.85          8.53        1.3814    0   2   4         6
                69.29          7.74        1.3561    1   0   7         6
                73.80          3.85        1.2839    2   0   5         6
                74.27          8.01        1.2770    1   1   6        12
                79.04          1.42        1.2114    0   1   8         6
                80.12          4.50        1.1978    1   2   2        12
                83.29          2.00        1.1601    0   0   9         2
                87.67          2.79        1.1131    2   1   4        12
                89.01          3.92        1.0998    0   2   7         6
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.