Rippite
      Sharygin V V, Doroshkevich A G, Seryotkin Y V, Karmanov N S, Belogub E V,
      Moroz T N, Nigmatulina E N, Yelisseyev A P, Vedenyapin V N, Kupriyanov I N
      Minerals 10 (2020) 1102
      Rippite, K2(Nb,Ti)2(Si4O12)O(O,F), a new K-Nb-cyclosilicate from Chuktukon
      Carbonatite Massif, Chadobets Upland, Krasnoyarsk Territory, Russia
      Locality: Chuktukon Carbonatite Massif, Russia
      _database_code_amcsd 0020927

      CELL PARAMETERS:    8.7388   8.7388   8.1277   90.000   90.000   90.000
      SPACE GROUP: P4bm      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    620.692
      Density (g/cm3):      3.192
      MAX. ABS. INTENSITY / VOLUME**2:      13.59070196    
      RIR:      1.386
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                10.89          3.82        8.1277    0   0   1         1
                14.33         86.24        6.1793    1   1   0         4
                18.03          4.27        4.9191    1   1   1         4
                20.32         94.88        4.3694    2   0   0         4
                21.87         99.81        4.0638    0   0   2         1
                22.75         34.59        3.9081    2   1   0         8
                23.11         10.27        3.8485    2   0   1         4
                25.29         71.12        3.5221    2   1   1         8
                26.25         50.17        3.3954    1   1   2         4
                28.90         49.25        3.0896    2   2   0         4
                30.03         85.75        2.9757    2   0   2         4
                30.96          1.39        2.8880    2   2   1         4
                31.77         62.28        2.8169    2   1   2         8
                32.40        100.00        2.7635    3   1   0         8
                33.06          3.32        2.7092    0   0   3         1
                36.20          2.70        2.4812    1   1   3         4
                36.53          9.08        2.4595    2   2   2         4
                37.09          2.67        2.4237    3   2   0         8
                38.77          4.02        2.3226    3   2   1         8
                39.12          2.68        2.3025    2   0   3         4
                39.43         11.86        2.2852    3   1   2         8
                41.33          3.12        2.1847    4   0   0         4
                42.66         15.76        2.1195    4   1   0         8
                42.86          2.08        2.1098    4   0   1         4
                43.47          1.71        2.0816    3   2   2         8
                44.16          6.24        2.0509    4   1   1         8
                44.59         32.58        2.0319    0   0   4         1
                45.42          1.12        1.9966    3   3   1         4
                46.47         42.00        1.9541    4   2   0         8
                46.97          7.24        1.9346    3   1   3         8
                47.08         13.28        1.9302    1   1   4         4
                47.24         11.14        1.9243    4   0   2         4
                49.47         12.76        1.8424    2   0   4         4
                49.62          9.43        1.8372    3   3   2         4
                50.53          5.03        1.8064    3   2   3         8
                51.92         28.68        1.7611    4   2   2         8
                53.46         22.35        1.7138    5   1   0         8
                53.91          3.44        1.7007    4   0   3         4
                54.01         12.83        1.6977    2   2   4         4
                54.74          2.04        1.6770    5   1   1         8
                56.09          2.56        1.6397    3   3   3         4
                56.19         22.19        1.6370    3   1   4         8
                57.95          3.07        1.5914    5   2   1         8
                58.44         20.72        1.5791    5   1   2         8
                59.87         13.50        1.5448    4   4   0         4
                61.53          2.85        1.5071    5   2   2         8
                61.81          7.02        1.5009    2   1   5         8
                61.91          6.36        1.4987    5   3   0         8
                62.41          5.09        1.4879    4   0   4         4
                63.08          2.69        1.4739    5   3   1         8
                63.42          5.45        1.4668    4   1   4         8
                63.92          4.23        1.4565    6   0   0         4
                64.41          1.51        1.4465    3   3   4         4
                64.54          7.63        1.4440    4   4   2         4
                64.91          3.00        1.4367    6   1   0         8
                66.37         18.81        1.4085    4   2   4         8
                66.50          1.54        1.4061    5   3   2         8
                66.76          1.17        1.4011    3   1   5         8
                67.83          6.70        1.3817    6   2   0         8
                69.65          3.51        1.3500    3   2   5         8
                71.27          4.06        1.3232    1   1   6         4
                72.10          8.92        1.3101    5   1   4         8
                72.22         13.16        1.3082    6   2   2         8
                72.47          2.32        1.3041    4   0   5         4
                72.57          2.63        1.3027    6   3   0         8
                73.14          3.68        1.2939    2   0   6         4
                73.15          1.49        1.2938    5   4   2         8
                73.41          1.49        1.2899    4   1   5         8
                74.80          1.21        1.2692    6   1   3         8
                76.84          1.28        1.2406    2   2   6         4
                76.84          2.17        1.2405    6   3   2         8
                77.64          5.04        1.2298    4   4   4         4
                78.66          1.82        1.2163    3   1   6         8
                79.01          2.67        1.2119    6   4   0         8
                79.46          7.26        1.2061    5   3   4         8
                79.92          1.79        1.2004    7   2   0         8
                81.27          3.47        1.1838    6   0   4         4
                81.38          1.72        1.1825    3   2   6         8
                81.63          1.23        1.1794    5   1   5         8
                83.18          3.48        1.1613    6   4   2         8
                84.08          4.04        1.1513    4   0   6         4
                84.33          2.23        1.1484    5   2   5         8
                84.42          4.28        1.1475    7   3   0         8
                84.86          5.13        1.1426    6   2   4         8
                85.87          2.66        1.1318    3   3   6         4
                87.01          1.08        1.1198    4   4   5         4
                87.65          3.43        1.1133    4   2   6         8
                88.55          3.63        1.1043    7   3   2         8
                88.80          1.80        1.1019    5   3   5         8
                89.25          1.49        1.0975    7   2   3         8
                89.78          1.66        1.0924    8   0   0         4
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.