Perraultite
      Sokolova E, Day M C, Hawthorne F C, Agakhanov A A, Camara F, Uvarova Y A, Della Ventura G
      The Canadian Mineralogist 59 (2021) 1-15
      From structure topology to chemical composition. XXIX. Revision of the crystal
      structure of perraultite, NaBaMn4Ti2(Si2O7)2O2(OH)2F, a seidozerite-supergroup
      TS-block mineral from the Oktyabr'skii massiff, Ukraine, and discreditation of surkhobite
      Locality: Oktyabr'skii massif, Donetsk region, Ukraine
      _database_code_amcsd 0020975

      CELL PARAMETERS:   10.7410  13.8410  11.0790  108.174   99.186   89.990
      SPACE GROUP: C-1       
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:   1542.674
      Density (g/cm3):      3.722
      MAX. ABS. INTENSITY / VOLUME**2:      11.61069143    
      RIR:      1.016
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                 8.52         42.34       10.3768    0   0   1         2
                10.45         10.69        8.4645   -1   1   0         2
                11.01          9.62        8.0376    1   1   0         2
                11.56          8.52        7.6535   -1  -1   1         2
                13.03          5.71        6.7939    1  -1   1         2
                13.49          3.94        6.5661    0   2   0         2
                13.49          3.90        6.5642    0  -2   1         2
                13.95          4.31        6.3470   -1   1   1         2
                15.97          2.62        5.5504    1   1   1         2
                16.75          3.18        5.2942    2   0   0         2
                17.09          9.63        5.1884    0   0   2         2
                17.11          2.28        5.1821   -1  -1   2         2
                17.48          6.46        5.0735   -2   0   1         2
                18.13          5.37        4.8938    0   2   1         2
                18.14          5.28        4.8914    0  -2   2         2
                19.44          1.36        4.5669    1  -1   2         2
                20.07         15.60        4.4246    2   0   1         2
                20.69          1.33        4.2928   -1   1   2         2
                20.99          1.93        4.2328   -2  -2   1         2
                20.99          1.91        4.2322   -2   2   0         2
                21.88         17.06        4.0623   -2   0   2         2
                22.12          1.20        4.0188    2   2   0         2
                22.13          1.14        4.0175    2  -2   1         2
                23.24          5.24        3.8271   -2   2   1         2
                23.24          5.08        3.8267   -2  -2   2         2
                24.26          1.59        3.6695    1  -3   2         2
                24.54          1.10        3.6279   -1  -1   3         2
                25.01          8.68        3.5603    0   2   2         2
                25.02          8.75        3.5588    0  -2   3         2
                25.02          2.22        3.5586   -1   3   1         2
                25.75          2.34        3.4602    0  -4   1         2
                25.76         49.93        3.4589    0   0   3         2
                25.79          5.12        3.4546   -3   1   0         2
                25.80          4.76        3.4537   -3  -1   1         2
                25.99          8.82        3.4288    2   0   2         2
                26.22         22.58        3.3983    2   2   1         2
                26.23         22.29        3.3970    2  -2   2         2
                26.49          2.85        3.3642    3   1   0         2
                26.52          2.31        3.3607   -3   1   1         2
                26.69          2.33        3.3399    1   3   1         2
                27.16          7.00        3.2830    0   4   0         2
                27.17          6.98        3.2821    0  -4   2         2
                27.65          1.66        3.2263   -1  -3   3         2
                28.12         32.20        3.1735   -2   2   2         2
                28.12         32.50        3.1729   -2  -2   3         2
                28.35          3.94        3.1479   -2   0   3         2
                29.61          1.73        3.0172    1  -3   3         2
                30.67          1.40        2.9151   -1   3   2         2
                30.87          3.62        2.8968   -2  -4   1         2
                30.88          3.68        2.8961    2  -4   1         2
                31.06         11.08        2.8794    0   4   1         2
                31.07         10.96        2.8781    0  -4   3         2
                31.29         50.18        2.8587   -2  -4   2         2
                31.29         49.82        2.8587   -2   4   0         2
                32.26         16.66        2.7752    2   2   2         2
                32.27         16.68        2.7742    2  -2   3         2
                32.85          3.26        2.7263    2   4   0         2
                32.86          3.55        2.7257    0   2   3         2
                32.87          3.33        2.7252    2  -4   2         2
                32.87          3.64        2.7248    0  -2   4         2
                33.44          1.21        2.6799    1  -5   1         2
                33.50          1.84        2.6748   -4   0   1         2
                33.82          1.06        2.6504   -1  -5   2         2
                33.86         42.18        2.6471    4   0   0         2
                34.03         31.77        2.6344   -2   4   1         2
                34.03          1.10        2.6342   -1  -3   4         2
                34.04         31.54        2.6339   -2  -4   3         2
                34.58         32.24        2.5942    0   0   4         2
                34.61          4.11        2.5916   -2   2   3         2
                34.62          4.20        2.5910   -2  -2   4         2
                35.14          1.05        2.5542    3  -3   2         2
                35.18          1.06        2.5512   -3  -3   3         2
                35.38          5.89        2.5367   -4   0   2         2
                36.41         16.03        2.4676    4   0   1         2
                36.73          3.81        2.4469    0   4   2         2
                36.75          3.91        2.4457    0  -4   4         2
                36.90          8.77        2.4362    2   4   1         2
                36.91          8.89        2.4350    2  -4   3         2
                38.66         13.46        2.3288   -2   4   2         2
                38.67         13.23        2.3282   -2  -4   4         2
                39.38          1.04        2.2878   -4   2   2         2
                39.39          1.07        2.2877   -4  -2   3         2
                40.47          1.43        2.2287   -1  -5   4         2
                40.63          2.00        2.2207    4   2   1         2
                40.64          1.92        2.2201    4  -2   2         2
                40.79         28.11        2.2123    4   0   2         2
                41.25          1.66        2.1887    0   6   0         2
                41.26          1.71        2.1881    0  -6   3         2
                41.28          5.91        2.1869   -3  -5   2         2
                41.28          5.95        2.1868    3  -5   1         2
                41.74          3.26        2.1638   -3  -5   1         2
                41.77          3.84        2.1626   -3   5   0         2
                42.21          1.08        2.1409    1  -5   4         2
                42.50          8.02        2.1271    2   4   2         2
                42.52          7.90        2.1261    2  -4   4         2
                42.72          1.10        2.1168   -3  -5   3         2
                42.72          5.31        2.1164   -4  -4   2         2
                42.73          5.17        2.1161   -4   4   0         2
                43.02          4.90        2.1027   -4  -4   1         2
                43.03          4.96        2.1022    4  -4   1         2
                43.15          1.51        2.0966   -1   5   2         2
                43.59          1.15        2.0761    0   4   3         2
                43.61         11.25        2.0754    0   0   5         2
                43.62          1.19        2.0752    0  -4   5         2
                43.84          1.04        2.0649   -4   2   3         2
                43.85          1.02        2.0647   -4  -2   4         2
                44.27          3.42        2.0459   -4  -4   3         2
                44.27          3.39        2.0458   -4   4   1         2
                44.61         18.65        2.0312   -4   0   4         2
                44.69          4.13        2.0276   -2   4   3         2
                44.71          4.18        2.0269   -2  -4   5         2
                45.09          1.53        2.0108    1   5   2         2
                45.12          2.08        2.0094    4   4   0         2
                45.14          2.13        2.0087    4  -4   2         2
                46.88          2.60        1.9378   -2   6   1         2
                46.90          2.48        1.9374   -2  -6   4         2
                48.30          1.08        1.8844    1  -5   5         2
                49.67          2.61        1.8356    2   6   1         2
                49.69          2.65        1.8347    2  -6   4         2
                49.81          1.79        1.8305    2   0   5         2
                51.02          1.15        1.7902   -6   0   1         2
                51.32          1.60        1.7802    0   4   4         2
                51.35          1.67        1.7794    0  -4   6         2
                51.37          1.03        1.7788   -2  -6   5         2
                51.77         16.95        1.7659   -2   4   4         2
                51.79         17.19        1.7653   -2  -4   6         2
                51.85          1.01        1.7635   -6   0   2         2
                52.30          1.63        1.7493   -4  -6   2         2
                52.31          1.65        1.7490    4  -6   1         2
                52.86          2.50        1.7321   -2   0   6         2
                52.92         24.19        1.7301    0  -8   2         2
                52.94          6.95        1.7295    0   0   6         2
                53.44         19.33        1.7144    4   0   4         2
                53.71          1.96        1.7067    0  -8   1         2
                53.71          1.89        1.7064    0  -8   3         2
                54.03          3.02        1.6972   -5  -5   2         2
                54.18          1.96        1.6929   -5   5   0         2
                54.30          1.44        1.6895    5  -5   1         2
                54.56          1.49        1.6821    6   2   0         2
                54.56          1.51        1.6819    6  -2   1         2
                54.62          1.58        1.6804   -6  -2   3         2
                54.62          1.54        1.6803   -6   2   2         2
                54.94          1.66        1.6711   -4   6   1         2
                54.95          1.65        1.6710   -4  -6   4         2
                55.91          2.77        1.6446    4   6   0         2
                55.93          2.78        1.6440    4  -6   3         2
                56.02          1.77        1.6415    0   8   0         2
                56.04          1.77        1.6410    0  -8   4         2
                56.89          8.60        1.6184    2   4   4         2
                56.92          8.83        1.6177    2  -4   6         2
                57.07          1.14        1.6137   -2   6   3         2
                57.10          1.12        1.6132   -2  -6   6         2
                57.59          1.85        1.6006    6   2   1         2
                57.60          1.84        1.6003    6  -2   2         2
                57.68          1.90        1.5981   -6   2   3         2
                57.68          1.92        1.5981   -6  -2   4         2
                58.00         17.25        1.5901   -6  -4   2         2
                58.01         17.36        1.5899   -6   4   0         2
                58.48          1.51        1.5781   -4   6   2         2
                58.49          1.66        1.5779   -4  -6   5         2
                58.66          7.67        1.5739   -4   0   6         2
                58.72          1.69        1.5722   -6  -4   1         2
                58.74          1.70        1.5719    6  -4   1         2
                58.77          1.87        1.5713   -6  -4   3         2
                58.77          1.91        1.5711   -6   4   1         2
                58.90          1.87        1.5681    2   0   6         2
                59.09          1.06        1.5634   -2   2   6         2
                59.10          1.05        1.5631   -2  -2   7         2
                59.75          1.22        1.5476    0   8   1         2
                59.77          1.66        1.5473    0   4   5         2
                59.78          1.30        1.5471    0  -8   5         2
                59.79          1.61        1.5467    0  -4   7         2
                59.83          1.27        1.5459   -3   5   4         2
                60.85          2.64        1.5222    1  -9   2         2
                60.97          1.83        1.5196   -1  -9   2         2
                61.10          1.53        1.5168   -1  -9   3         2
                61.20          1.03        1.5144    4   0   5         2
                62.67          1.63        1.4824    0   0   7         2
                63.36          1.39        1.4679    3  -5   6         2
                63.45          1.53        1.4661   -3  -5   7         2
                64.32          5.03        1.4484   -4  -8   2         2
                64.33          5.14        1.4481    4  -8   2         2
                64.44          1.30        1.4459    6   4   1         2
                64.46          1.33        1.4455    6  -4   3         2
                64.55          1.43        1.4437   -6   4   3         2
                64.56          1.44        1.4436   -6  -4   5         2
                64.75          3.58        1.4397    0   8   2         2
                64.78          3.59        1.4391    0  -8   6         2
                65.10          2.19        1.4328   -4   4   5         2
                65.12          2.29        1.4325   -4  -4   7         2
                65.21          2.73        1.4306    2   2   6         2
                65.23          2.72        1.4304    2  -2   7         2
                65.32          3.94        1.4285    2   4   5         2
                65.35          3.96        1.4280    2  -4   7         2
                65.93          2.28        1.4169   -4  -8   1         2
                65.95          2.30        1.4164    4  -8   3         2
                66.97          4.10        1.3973   -4   0   7         2
                67.15          1.30        1.3939    3   5   4         2
                67.26          1.06        1.3920   -3   5   5         2
                67.50          2.66        1.3876    4   4   4         2
                67.53          2.79        1.3871    4  -4   6         2
                68.50          1.08        1.3697   -2   2   7         2
                68.52          1.12        1.3695   -2  -2   8         2
                68.88          2.27        1.3631    4   8   0         2
                68.91          2.23        1.3626    4  -8   4         2
                69.24          2.71        1.3570    6   4   2         2
                69.25          1.09        1.3568    0   2   7         2
                69.26          1.10        1.3566    0  -2   8         2
                69.26          2.73        1.3566    6  -4   4         2
                69.38          2.94        1.3545   -6   4   4         2
                69.39          2.94        1.3544   -6  -4   6         2
                70.15          1.50        1.3415   -8   0   1         2
                70.40          6.43        1.3374   -8   0   2         2
                71.64          1.66        1.3172   -4   8   2         2
                71.66          1.63        1.3170   -4  -8   6         2
                71.98          1.71        1.3119   -8   0   3         2
                72.93          1.98        1.2971    0   0   8         2
                73.02          1.76        1.2958   -4   4   6         2
                73.03          1.80        1.2955   -4  -4   8         2
                73.36          1.38        1.2906   -2  10   0         2
                73.37          1.39        1.2904   -2 -10   5         2
                73.66          1.34        1.2861    8   0   1         2
                74.53          1.31        1.2732    2   4   6         2
                74.56          1.28        1.2728    2  -4   8         2
                76.10          1.67        1.2507   -4   0   8         2
                76.70          1.07        1.2425   -6   0   7         2
                78.53          3.60        1.2181    4   8   2         2
                78.57          3.75        1.2175    4  -8   6         2
                82.91          2.26        1.1644   -4   8   4         2
                82.94          2.31        1.1641   -4  -8   8         2
                84.35          4.47        1.1483   -8   0   6         2
                88.29          1.12        1.1069   -2   4   8         2
                88.36          3.59        1.1062    8   0   4         2
                89.57          2.49        1.0944    4   0   8         2
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.