Kolskyite
      Camara F, Sokolova E, Abdu Y, Hawthorne F C, Khomyakov A P
      The Canadian Mineralogist 51 (2013) 921-936
      Kolskyite, (Ca[_])Na2Ti4(Si2O7)2O4(H2O)7, a group-IV
      Ti-disilicate mineral from the Khibiny alkaline massif,
      Kola Peninsula, Russia: Description and crystal structure
      Locality: Khibiny alkaline massif, Kola Peninsula, Russia
      _database_code_amcsd 0020036

      CELL PARAMETERS:    5.3870   7.0910  15.4730   96.580   93.948   89.818
      SPACE GROUP: P-1       
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    585.763
      Density (g/cm3):      2.547
      MAX. ABS. INTENSITY / VOLUME**2:      71.56539939    
      RIR:      9.148
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                 5.76        100.00       15.3345    0   0   1         2
                11.54          5.44        7.6673    0   0   2         2
                13.22          1.79        6.6991    0  -1   1         2
                16.08          1.98        5.5117    0  -1   2         2
                20.74          1.51        4.2825   -1   1   0         2
                21.63          1.08        4.1090   -1   1   1         2
                22.57          2.05        3.9391   -1  -1   2         2
                23.20          2.74        3.8336    0   0   4         2
                25.49          1.32        3.4940   -1  -1   3         2
                26.96          1.44        3.3068    1  -1   3         2
                27.74          1.06        3.2160    0   1   4         2
                29.12          2.97        3.0669    0   0   5         2
                30.50          1.63        2.9309    1  -2   1         2
                31.75          3.59        2.8182    1   2   1         2
                31.84          3.77        2.8105    1  -2   2         2
                33.46          1.18        2.6783   -2   0   1         2
                34.09          1.83        2.6299    1   2   2         2
                34.60          2.71        2.5923   -2   0   2         2
                51.55          1.59        1.7727    0  -4   1         2
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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.