Mg2GeO4
      Thomas S M, Muller M K, Kahlenberg V, Thomas R, Rhede D, Wirth R, Wunder B
      American Mineralogist 93 (2008) 1282-1294
      Protonation in germanium equivalents of ringwoodite, anhydrous phase B,
      and superhydrous phase B
      Note: Ge-ringwoodite
      Locality: synthetic
      _database_code_amcsd 0004619

      CELL PARAMETERS:    8.2460   8.2460   8.2460   90.000   90.000   90.000
      SPACE GROUP: Fd-3m     
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    560.699
      Density (g/cm3):      4.388
      MAX. ABS. INTENSITY / VOLUME**2:      55.56637835    
      RIR:      4.123
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                18.64         22.66        4.7608    1   1   1         8
                30.67         73.30        2.9154    2   2   0        12
                36.13        100.00        2.4863    3   1   1        24
                43.92          2.95        2.0615    4   0   0         6
                48.10          4.94        1.8918    3   3   1        24
                54.52         23.62        1.6832    4   2   2        24
                58.13          6.79        1.5869    3   3   3         8
                58.13         20.11        1.5869    5   1   1        24
                63.86         35.84        1.4577    4   4   0        12
                67.16          3.17        1.3938    5   3   1        48
                72.50          8.16        1.3038    6   2   0        24
                75.62          7.38        1.2575    5   3   3        24
                88.79          8.02        1.1019    6   4   2        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.