Rb2MgSi5O12
      Torres-Martinez L M, West A R
      Zeitschrift fur Kristallographie 175 (1986) 1-7
      New family of silicate phases with the pollucite structure
      _database_code_amcsd 0010959

      CELL PARAMETERS:   13.5300  13.5300  13.5300   90.000   90.000   90.000
      SPACE GROUP: Ia-3d     
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:   2476.814
      Density (g/cm3):      2.830
      MAX. ABS. INTENSITY / VOLUME**2:      34.60142354    
      RIR:      3.982
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                18.55          4.30        4.7836    2   2   0        12
                24.62         32.09        3.6160    3   2   1        48
                26.35        100.00        3.3825    4   0   0         6
                29.53          3.11        3.0254    4   2   0        24
                31.00         37.99        2.8846    3   3   2        24
                32.42          1.54        2.7618    4   2   2        24
                33.78          5.92        2.6535    4   3   1        48
                36.37          1.42        2.4702    5   2   1        48
                37.61         21.56        2.3918    4   4   0        12
                41.13          8.94        2.1949    5   3   2        48
                42.25          1.49        2.1393    6   2   0        24
                45.47          3.81        1.9949    6   3   1        48
                46.50          1.60        1.9529    4   4   4         8
                48.52          1.81        1.8763    6   4   0        24
                49.51          4.55        1.8412    7   2   1        48
                49.51          4.27        1.8412    6   3   3        24
                50.48          1.34        1.8080    6   4   2        48
                53.31         13.34        1.7183    7   3   2        48
                54.24          2.80        1.6912    8   0   0         6
                55.15          1.61        1.6654    7   4   1        48
                56.05          1.00        1.6408    8   2   0        24
                58.70          1.86        1.5728    8   3   1        48
                60.43          1.96        1.5320    7   5   2        48
                61.28          2.28        1.5127    8   4   0        24
                63.79          1.29        1.4590    7   6   1        48
                67.07          2.69        1.3955    7   6   3        48
                70.26          2.65        1.3397    7   7   2        24
                70.26          2.00        1.3397   10   1   1        24
                73.40          2.16        1.2900   10   3   1        48
                74.94          1.26        1.2672    8   7   1        48
                79.52          1.83        1.2053   10   5   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.