Ringwoodite
      Smyth J R, Holl C M, Frost D J, Jacobsen S D, Langenhorst F, McCammon C A
      American Mineralogist 88 (2003) 1402-1407
      Structural systematics of hydrous ringwoodite and water in Earth's interior
      Sample: SZ9901
      _database_code_amcsd 0003163

      CELL PARAMETERS:    8.0944   8.0944   8.0944   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    530.340
      Density (g/cm3):      3.682
      MAX. ABS. INTENSITY / VOLUME**2:      26.47516657    
      RIR:      2.341
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                31.26         26.66        2.8618    2   2   0        12
                36.83        100.00        2.4406    3   1   1        24
                44.79         44.77        2.0236    4   0   0         6
                49.06          3.81        1.8570    3   3   1        24
                55.63          8.49        1.6523    4   2   2        24
                59.32         14.73        1.5578    5   1   1        24
                59.32         10.25        1.5578    3   3   3         8
                65.20         59.83        1.4309    4   4   0        12
                74.08          3.29        1.2798    6   2   0        24
                77.30          9.06        1.2344    5   3   3        24
                82.58          5.24        1.1683    4   4   4         8
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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.