Pyrophanite
      Ko J, Prewitt C T
      Physics and Chemistry of Minerals 15 (1988) 355-362
      High-pressure phase transition in MnTiO3 from the ilmenite to the
      LiNbO3 structure
      Note: Represents the high pressure phase of pyrophanite
      Note: Sample synthesized at 60 kbar and 1300 C
      _database_code_amcsd 0007448

      CELL PARAMETERS:    5.2050   5.2050  13.7000   90.000   90.000  120.000
      SPACE GROUP: R3c       
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    321.435
      Density (g/cm3):      4.674
      MAX. ABS. INTENSITY / VOLUME**2:      45.12280362    
      RIR:      3.144
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                23.63         14.95        3.7655    0   1   2         3
                32.84        100.00        2.7271    1   0   4         3
                34.46         68.66        2.6025    1   1   0         6
                39.46          1.24        2.2833    0   0   6         1
                39.87         18.13        2.2611    1   1   3         6
                42.21          4.40        2.1409    2   0   2         3
                48.34         46.38        1.8828    0   2   4         3
                53.38         23.63        1.7164    1   1   6         6
                54.26          1.57        1.6907    2   1   1         6
                55.59          1.23        1.6534    1   2   2         6
                57.58         14.16        1.6009    0   1   8         3
                60.71         31.59        1.5254    2   1   4         6
                61.74         26.25        1.5026    3   0   0         3
                68.86          6.59        1.3635    2   0   8         3
                71.85          1.59        1.3140    1   1   9         6
                72.05          6.02        1.3108    1   0  10         3
                72.66          7.75        1.3012    2   2   0         6
                79.33          8.16        1.2078    1   2   8         6
                82.06          8.59        1.1744    1   3   4         6
                82.37          2.05        1.1707    0   2  10         3
                85.98          3.14        1.1305    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.