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 = 297 K
      Note: specimen III lattice parameter for this T is estimated
      _database_code_amcsd 0012170

      CELL PARAMETERS:    5.7000   5.7000   5.7000   90.000   90.000   90.000
      SPACE GROUP: Im3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    185.193
      Density (g/cm3):      1.532
      MAX. ABS. INTENSITY / VOLUME**2:      74.55132272    
      RIR:     15.840
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                22.05        100.00        4.0305    1   1   0        12
                31.39         19.55        2.8500    2   0   0         6
                38.69         41.89        2.3270    2   1   1        24
                44.98         12.86        2.0153    2   2   0        12
                50.64         17.13        1.8025    3   1   0        24
                55.88          4.02        1.6454    2   2   2         8
                60.80         17.75        1.5234    3   2   1        48
                65.50          1.69        1.4250    4   0   0         6
                70.03          2.65        1.3435    3   3   0        12
                70.03          5.30        1.3435    4   1   1        24
                74.44          4.26        1.2746    4   2   0        24
                78.75          3.52        1.2152    3   3   2        24
                82.99          2.97        1.1635    4   2   2        24
                87.20          2.56        1.1179    5   1   0        24
                87.20          5.12        1.1179    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.