PbMg2
      Wyckoff R W G
      Crystal Structures 1 (1963) 239-444
      Second edition. Interscience Publishers, New York, New York
      Fluorite structure
      _database_code_amcsd 0011706

      CELL PARAMETERS:    6.8360   6.8360   6.8360   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    319.452
      Density (g/cm3):      5.318
      MAX. ABS. INTENSITY / VOLUME**2:      338.0451636    
      RIR:     20.697
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                22.53        100.00        3.9468    1   1   1         8
                26.07         28.31        3.4180    2   0   0         6
                37.20         62.40        2.4169    2   2   0        12
                43.93         47.69        2.0611    3   1   1        24
                45.99          7.57        1.9734    2   2   2         8
                53.63          9.83        1.7090    4   0   0         6
                58.89         18.01        1.5683    3   3   1        24
                60.57          9.02        1.5286    4   2   0        24
                67.07         17.92        1.3954    4   2   2        24
                71.75          2.99        1.3156    3   3   3         8
                71.75          8.98        1.3156    5   1   1        24
                79.28          5.01        1.2084    4   4   0        12
                83.70         10.80        1.1555    5   3   1        48
                85.16          2.88        1.1393    4   4   2        24
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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.