Pyrophanite
      Liferovich R P, Mitchell R H
      Physics and Chemistry of Minerals 32 (2005) 442-449
      Rhombohedral ilmenite group nickel titanates with Zn, Mg, and Mn:
      synthesis and crystal structures
      _database_code_amcsd 0008979

      CELL PARAMETERS:    5.0770   5.0770  13.9727   90.000   90.000  120.000
      SPACE GROUP: R-3       
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    311.907
      Density (g/cm3):      4.685
      MAX. ABS. INTENSITY / VOLUME**2:      43.99556457    
      RIR:      3.057
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                23.91         26.53        3.7212    0   1   2         6
                32.74        100.00        2.7351    1   0   4         6
                35.36         65.86        2.5385    1   1   0         6
                40.47          7.86        2.2289    2  -1   3         6
                40.47         15.13        2.2289    1   1   3         6
                41.59          1.22        2.1717    0   2   1         6
                43.14          1.44        2.0970    2   0   2         6
                48.96         37.30        1.8606    0   2   4         6
                53.39         24.92        1.7161    2  -1   6         6
                53.39         19.70        1.7161    1   1   6         6
                56.71          9.56        1.6232    0   1   8         6
                56.96          1.91        1.6167   -1   3   2         6
                61.82         12.73        1.5007    2   1   4         6
                61.82         17.78        1.5007    3  -1   4         6
                63.47         30.26        1.4656    3   0   0         6
                68.63          3.20        1.3675    2   0   8         6
                70.75         10.32        1.3316    1   0  10         6
                71.19          2.01        1.3245    1   1   9         6
                74.80          6.84        1.2693    2   2   0         6
                79.63          2.84        1.2039   -1   3   8         6
                79.63          2.07        1.2039    1   2   8         6
                79.84          1.26        1.2013    3   1   2         6
                81.65          5.54        1.1792    0   2  10         6
                84.07          5.60        1.1513    1   3   4         6
                84.07          3.45        1.1513   -1   4   4         6
                87.54          3.42        1.1145    4  -2   6         6
                87.54          4.11        1.1145    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.