Sogdianite
Diffraction data computed using the structure from the paper listed below,
along with the cell parameters refined from the powder pattern for R050648
      Cooper M A, Hawthorne F C, Grew E S
      American Mineralogist 84 (1999) 764-768
      The crystal chemistry of sogdianite, a milarite-group mineral
      Note: U(1,2) for Li2 changed to match symmetry constraints.

      CELL PARAMETERS:   10.04398   10.04398   14.20898   90.00000   90.00000   120.0000
      SPACE GROUP: P6/mcc
      X-RAY WAVELENGTH:     1.541838
               2-THETA      INTENSITY    D-SPACING   H   K   L
                10.22          9.67        8.6983    1   0   0
                12.50         20.32        7.1045    0   0   2
                16.15          6.96        5.5024    1   0   2
                20.46         84.69        4.3492    2   0   0
                21.71         79.26        4.1009    1   1   2
                24.03          5.20        3.7093    2   0   2
                25.10         19.51        3.5522    0   0   4
                27.16          2.27        3.2877    2   1   0
                27.15         15.49        3.2886    1   0   4
                27.89         76.54        3.2030    2   1   1
                29.98          6.68        2.9837    2   1   2
                30.87         13.46        2.8994    3   0   0
                30.86        100.00        2.9001    1   1   4
                32.57         12.45        2.7512    2   0   4
                33.20          9.54        2.7008    2   1   3
                33.41          6.85        2.6845    3   0   2
                35.78         25.08        2.5110    2   2   0
                37.30          3.10        2.4125    3   1   0
                37.29          2.54        2.4129    2   1   4
                37.85          3.58        2.3784    3   1   1
                38.03          1.58        2.3675    2   2   2
                40.17         13.09        2.2462    3   0   4
                41.55          1.11        2.1746    4   0   0
                42.05          8.35        2.1497    3   1   3
                42.21          2.90        2.1420    1   1   6
                44.19          4.34        2.0504    2   2   4
                45.47          6.07        1.9955    3   2   0
                45.46         14.87        1.9957    3   1   4
                47.94         12.30        1.8981    4   1   0
                48.39         12.44        1.8814    4   1   1
                49.58         12.22        1.8391    3   1   5
                49.73          8.19        1.8338    4   1   2
                49.72          7.83        1.8341    3   0   6
                51.46          9.63        1.7761    0   0   8
                52.62          1.97        1.7397    5   0   0
                53.03          1.11        1.7272    2   1   7
                53.17         15.39        1.7228    2   2   6
                54.84         13.78        1.6741    4   1   4
                55.92          5.58        1.6443    2   0   8
                56.48          2.63        1.6294    3   3   2
                58.48          1.70        1.5784    4   1   5
                59.53          7.17        1.5529    5   1   1
                60.70          1.62        1.5258    5   1   2
                61.21         15.20        1.5143    3   3   4
                61.20          6.06        1.5145    3   0   8
                62.61          1.62        1.4836    5   1   3
                64.25          1.72        1.4497    6   0   0
                64.23         12.46        1.4500    2   2   8
                65.24          1.64        1.4301    5   1   4
                65.61          2.36        1.4228    4   3   1
                65.59          1.65        1.4232    2   1   9
                65.73          5.50        1.4205    6   0   2
                67.21         14.11        1.3928    5   2   0
                67.57          4.21        1.3862    5   2   1
                67.56          1.98        1.3864    4   1   7
                68.53          3.91        1.3690    5   1   5
                68.66          1.70        1.3668    5   2   2
                68.65          1.29        1.3670    3   3   6
                68.64          4.23        1.3672    1   1  10
                70.10          3.98        1.3422    6   0   4
                70.46          1.55        1.3363    5   2   3
                71.05          2.14        1.3265    6   1   0
                71.04          2.96        1.3267    3   2   8
                71.39          9.11        1.3210    3   1   9
                72.45          2.32        1.3043    2   1  10
                72.93          2.97        1.2969    4   1   8
                74.23          2.92        1.2774    4   3   5
                74.33          1.16        1.2759    3   0  10
                76.67          1.31        1.2426    7   0   0
                78.84          2.13        1.2138    4   1   9
                79.77          1.28        1.2019    5   3   3
                79.74          1.59        1.2023    2   1  11
                79.88          3.64        1.2006    5   2   6
                81.25          1.38        1.1837    4   4   4
                83.94          2.48        1.1525    1   1  12
                85.30          2.73        1.1375    4   1  10
                87.89          2.94        1.1105    5   1   9
                89.37          1.23        1.0959    7   1   4
                89.36          6.84        1.0960    5   2   8
                89.36          6.84        1.0960    5   2   8
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.