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: Ringby2
      _database_code_amcsd 0003159

      CELL PARAMETERS:    8.0682   8.0682   8.0682   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    525.206
      Density (g/cm3):      3.519
      MAX. ABS. INTENSITY / VOLUME**2:      22.52179480    
      RIR:      2.084
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                31.36         31.34        2.8525    2   2   0        12
                36.95        100.00        2.4327    3   1   1        24
                38.66          2.78        2.3291    2   2   2         8
                44.94         44.48        2.0171    4   0   0         6
                49.23          2.23        1.8510    3   3   1        24
                55.82         10.26        1.6469    4   2   2        24
                59.54         10.35        1.5527    3   3   3         8
                59.54         15.10        1.5527    5   1   1        24
                65.44         64.14        1.4263    4   4   0        12
                74.36          4.08        1.2757    6   2   0        24
                77.59          9.35        1.2304    5   3   3        24
                82.90          5.05        1.1645    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.