Ilmenite
      Barth T F W, Posnjak E
      Zeitschrift fur Kristallographie 88 (1934) 265-270
      The crystal structure of ilmenite
      Locality: Quincy, Massachusetts, USA
      _database_code_amcsd 0010536

      CELL PARAMETERS:    5.5200   5.5200   5.5200   54.830   54.830   54.830
      SPACE GROUP: R-3       
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    104.617
      Density (g/cm3):      4.815
      MAX. ABS. INTENSITY / VOLUME**2:      48.19817068    
      RIR:      3.259
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                18.98          1.56        4.6752    1   1   1         2
                21.15          1.83        4.2001    1   0   0         6
                23.87         22.54        3.7284    1   1   0         6
                32.65        100.00        2.7427    2   1   1         6
                35.31         64.73        2.5416    0  -1   1         6
                40.39          5.30        2.2330    2   0   1         6
                40.39         16.35        2.2330    2   1   0         6
                43.07          1.02        2.1001    2   0   0         6
                48.85         37.02        1.8642    2   2   0         6
                53.24         17.79        1.7205    3   1   2         6
                53.24         17.79        1.7205    3   2   1         6
                56.50         11.16        1.6288    3   3   2         6
                61.71         14.67        1.5032    3   0   1         6
                61.71         14.67        1.5032    3   1   0         6
                63.39         27.02        1.4674    1  -2   1         6
                74.69          5.84        1.2708    0  -2   2         6
                77.90          1.01        1.2263    3  -1   1         6
                83.92          3.88        1.1530    3  -1   2         6
                83.92          3.88        1.1530    2  -1   3         6
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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.