Ilmenite
      Harrison R J, Redfern S A T
      Physics and Chemistry of Minerals 28 (2001) 399-412
      Short- and long-range ordering in the ilmenite-hematite solid solution
      Sample: ilm65, T = 918 C
      _database_code_amcsd 0008592

      CELL PARAMETERS:    5.1334   5.1334  14.0327   90.000   90.000  120.000
      SPACE GROUP: R-3c      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    320.240
      Density (g/cm3):      4.806
      MAX. ABS. INTENSITY / VOLUME**2:      45.85967659    
      RIR:      3.107
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                23.69         25.00        3.7553    0   1   2         6
                32.51        100.00        2.7540    1   0   4         6
                34.96         66.69        2.5667    1   1   0         6
                40.07         19.24        2.2502    1   1   3        12
                42.67          1.23        2.1190    2   0   2         6
                48.48         33.83        1.8776    0   2   4         6
                52.97         34.04        1.7287    1   1   6        12
                56.30          1.46        1.6341    1   2   2        12
                56.39          8.76        1.6317    0   1   8         6
                61.16         24.64        1.5154    2   1   4        12
                62.70         23.25        1.4819    3   0   0         6
                68.09          2.83        1.3770    2   0   8         6
                70.35          6.92        1.3382    1   0  10         6
                70.69          1.45        1.3326    1   1   9        12
                73.84          4.49        1.2833    2   2   0         6
                78.89          3.47        1.2134    1   2   8        12
                81.04          3.09        1.1866    0   2  10         6
                83.02          5.39        1.1632    1   3   4        12
                86.50          4.15        1.1251    2   2   6        12
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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.