Sn6SiO8
      Locock A J, Ramik R A, Back M E
      The Canadian Mineralogist 44 (2006) 1457-1467
      The structures of two novel Sn2+ oxysalts found with romarchite and
      hydroromarchite as corrosion products of pewter artifacts
      _database_code_amcsd 0006130

      CELL PARAMETERS:    7.3742   7.3742  11.9598   90.000   90.000  120.000
      SPACE GROUP: P6_3mc    
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    563.228
      Density (g/cm3):      5.119
      MAX. ABS. INTENSITY / VOLUME**2:      99.10080428    
      RIR:      6.303
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                13.87         28.83        6.3862    1   0   0         6
                14.81          6.13        5.9799    0   0   2         1
                15.73         22.27        5.6334    1   0   1         6
                20.35         19.05        4.3650    1   0   2         6
                24.14         14.22        3.6871    1   1   0         6
                26.35          4.51        3.3818    1   0   3         6
                27.94          6.85        3.1931    2   0   0         6
                28.44          2.64        3.1385    1   1   2         6
                28.94         61.77        3.0851    2   0   1         6
                29.88         41.88        2.9899    0   0   4         1
                31.77        100.00        2.8167    2   0   2         6
                33.08          3.24        2.7079    1   0   4         6
                36.04         18.97        2.4922    2   0   3         6
                38.03          3.45        2.3661    2   1   1        12
                38.78          8.42        2.3223    1   1   4         6
                40.26          2.83        2.2400    1   0   5         6
                40.29         10.22        2.2383    2   1   2        12
                41.37          5.42        2.1825    2   0   4         6
                42.46          3.81        2.1287    3   0   0         6
                43.16          1.88        2.0958    3   0   1         6
                43.85          4.02        2.0648    2   1   3        12
                47.49         12.05        1.9144    2   0   5         6
                47.80          2.04        1.9028    1   0   6         6
                48.48          1.23        1.8778    3   0   3         6
                49.44         28.87        1.8435    2   2   0         6
                52.21          1.13        1.7521    3   1   1        12
                52.79          3.14        1.7341    3   0   4         6
                53.99          2.63        1.6983    3   1   2        12
                54.25         21.07        1.6909    2   0   6         6
                58.31          4.84        1.5825    4   0   1         6
                58.85         23.74        1.5692    2   2   4         6
                59.97         12.12        1.5425    4   0   2         6
                60.21          3.66        1.5370    2   1   6        12
                61.56          4.73        1.5065    2   0   7         6
                62.08          2.82        1.4950    0   0   8         1
                62.68          2.62        1.4821    4   0   3         6
                63.50          1.32        1.4651    3   2   0        12
                64.03          1.72        1.4542    3   2   1        12
                70.98          2.28        1.3279    4   0   5         6
                75.23          1.18        1.2631    4   1   4        12
                76.44          4.68        1.2461    4   0   6         6
                77.86          1.32        1.2269    2   0   9         6
                81.33          2.33        1.1830    4   2   2        12
                82.73          1.38        1.1665    4   0   7         6
                83.20          5.56        1.1612    2   2   8         6
                86.99          2.99        1.1200    2   0  10         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.