Geikielite
      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 0008981

      CELL PARAMETERS:    5.0418   5.0418  13.8494   90.000   90.000  120.000
      SPACE GROUP: R-3       
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    304.883
      Density (g/cm3):      4.488
      MAX. ABS. INTENSITY / VOLUME**2:      34.36200629    
      RIR:      2.493
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                21.34          1.78        4.1643    1   0   1         6
                24.10         36.52        3.6934    0   1   2         6
                33.02        100.00        2.7129    1   0   4         6
                35.61         67.08        2.5209    1   1   0         6
                39.02          1.29        2.3082    0   0   6         2
                40.78         14.37        2.2125    2  -1   3         6
                40.78         16.10        2.2125    1   1   3         6
                43.46          2.14        2.0821    2   0   2         6
                49.35         38.53        1.8467    0   2   4         6
                53.85         33.66        1.7024    2  -1   6         6
                53.85         26.21        1.7024    1   1   6         6
                57.25          7.17        1.6093    0   1   8         6
                57.40          2.37        1.6054   -1   3   2         6
                62.33         18.20        1.4897    3  -1   4         6
                62.33         13.18        1.4897    2   1   4         6
                63.97         35.68        1.4554    3   0   0         6
                69.27          2.09        1.3565    2   0   8         6
                71.46         12.50        1.3201    1   0  10         6
                71.88          1.78        1.3134    2  -1   9         6
                71.88          1.17        1.3134    1   1   9         6
                75.41          7.01        1.2605    2   2   0         6
                77.54          1.20        1.2311    0   3   6         6
                77.54          1.21        1.2311    3   0   6         6
                80.39          2.00        1.1945   -1   3   8         6
                80.39          1.44        1.1945    1   2   8         6
                80.52          1.61        1.1929    3   1   2         6
                82.48          6.66        1.1695    0   2  10         6
                84.82          5.56        1.1431    1   3   4         6
                84.82          3.45        1.1431   -1   4   4         6
                88.35          4.71        1.1063    4  -2   6         6
                88.35          5.76        1.1063    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.