Rubidium
      Kelly F M, Pearson W B
      Canadian Journal of Physics 33 (1955) 17-24
      The rubidium transition at ~180 K
      Locality: synthetic
      Sample: at T = 77 K
      Note: specimen III
      _database_code_amcsd 0012168

      CELL PARAMETERS:    5.6120   5.6120   5.6120   90.000   90.000   90.000
      SPACE GROUP: Im3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    176.747
      Density (g/cm3):      1.606
      MAX. ABS. INTENSITY / VOLUME**2:      78.67161480    
      RIR:     15.953
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                22.40        100.00        3.9683    1   1   0        12
                31.89         19.44        2.8060    2   0   0         6
                39.33         41.42        2.2911    2   1   1        24
                45.73         12.66        1.9841    2   2   0        12
                51.49         16.81        1.7747    3   1   0        24
                56.83          3.94        1.6200    2   2   2         8
                61.86         17.34        1.4999    3   2   1        48
                66.66          1.65        1.4030    4   0   0         6
                71.30          2.58        1.3228    3   3   0        12
                71.30          5.17        1.3228    4   1   1        24
                75.81          4.16        1.2549    4   2   0        24
                80.23          3.44        1.1965    3   3   2        24
                84.59          2.91        1.1455    4   2   2        24
                88.93          2.52        1.1006    5   1   0        24
                88.93          5.04        1.1006    4   3   1        48
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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.