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: Ringby4
      _database_code_amcsd 0003158

      CELL PARAMETERS:    8.0633   8.0633   8.0633   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    524.250
      Density (g/cm3):      3.562
      MAX. ABS. INTENSITY / VOLUME**2:      23.30526621    
      RIR:      2.130
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                31.38         30.68        2.8508    2   2   0        12
                36.97        100.00        2.4312    3   1   1        24
                38.68          2.23        2.3277    2   2   2         8
                44.97         44.26        2.0158    4   0   0         6
                49.26          2.39        1.8498    3   3   1        24
                55.86         10.02        1.6459    4   2   2        24
                59.58         10.29        1.5518    3   3   3         8
                59.58         15.13        1.5518    5   1   1        24
                65.48         63.38        1.4254    4   4   0        12
                74.41          3.97        1.2749    6   2   0        24
                77.65          9.30        1.2296    5   3   3        24
                82.97          5.05        1.1638    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.