Ilmenite
      Wechsler B A, Prewitt C T
      American Mineralogist 69 (1984) 176-185
      Crystal structure of ilmenite (FeTiO3) at high temperature and high pressure
      P = 1 atm
      _database_code_amcsd 0000931

      CELL PARAMETERS:    5.0875   5.0875  14.0827   90.000   90.000  120.000
      SPACE GROUP: R-3       
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    315.664
      Density (g/cm3):      4.788
      MAX. ABS. INTENSITY / VOLUME**2:      44.98145940    
      RIR:      3.059
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                23.82         32.21        3.7350    0   1   2         6
                32.56        100.00        2.7504    1   0   4         6
                35.28         69.75        2.5438    1   1   0         6
                38.35          1.79        2.3471    0   0   6         2
                40.33          5.09        2.2365    2  -1   3         6
                40.33         18.30        2.2365    1   1   3         6
                41.49          1.62        2.1765    0   2   1         6
                43.02          1.73        2.1025    2   0   2         6
                48.76         36.87        1.8675    0   2   4         6
                53.09         28.20        1.7250    2  -1   6         6
                53.09         21.16        1.7250    1   1   6         6
                56.28          8.10        1.6347    0   1   8         6
                56.81          2.02        1.6206   -1   3   2         6
                61.61         12.34        1.5054    2   1   4         6
                61.61         17.29        1.5054    3  -1   4         6
                63.33         29.53        1.4686    3   0   0         6
                68.19          2.40        1.3752    2   0   8         6
                70.16         11.15        1.3414    1   0  10         6
                70.68          1.37        1.3328    1   1   9         6
                74.62          6.73        1.2719    2   2   0         6
                76.52          1.27        1.2450    0   3   6         6
                76.52          1.28        1.2450    3   0   6         6
                77.80          1.07        1.2276    4  -2   3         6
                79.18          2.15        1.2097   -1   3   8         6
                79.18          1.64        1.2097    1   2   8         6
                79.63          1.36        1.2040    3   1   2         6
                81.04          5.88        1.1865    0   2  10         6
                83.79          5.17        1.1544    1   3   4         6
                83.79          3.12        1.1544   -1   4   4         6
                87.17          3.54        1.1182    4  -2   6         6
                87.17          4.42        1.1182    2   2   6         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.