Burkeite
      Giuseppetti G, Mazzi F, Tadini C
      Neues Jahrbuch fur Mineralogie, Monatshefte 1988 (1988) 203-221
      The crystal structure of synthetic burkeite Na4SO4(CO3)t(SO4)1-t
      Sample A
      Note sign of y-coordinate for O3 and O5 altered to reproduce reported bond lengths
      Locality: synthetic
      _database_code_amcsd 0014823

      CELL PARAMETERS:    5.1700   9.2170   7.0580   90.000   90.000   90.000
      SPACE GROUP: Pmnm      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    336.327
      Density (g/cm3):      2.588
      MAX. ABS. INTENSITY / VOLUME**2:      7.210139406    
      RIR:      0.907
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                 9.60          3.65        9.2170    0   1   0         2
                15.81         24.78        5.6037    0   1   1         4
                19.69         22.66        4.5091    1   1   0         4
                21.30          2.33        4.1708    1   0   1         4
                23.05          3.02        3.8588    0   2   1         4
                23.41         59.16        3.7998    1   1   1         8
                25.24         61.16        3.5290    0   0   2         2
                25.90          6.49        3.4402    1   2   0         4
                29.06          8.45        3.0723    0   3   0         2
                31.76          1.16        2.8170    0   3   1         4
                31.94         65.24        2.8019    0   2   2         4
                32.21        100.00        2.7791    1   1   2         8
                33.94         49.32        2.6412    1   3   0         4
                34.70         51.38        2.5850    2   0   0         2
                36.09          2.75        2.4890    2   1   0         4
                36.47          4.25        2.4634    1   2   2         8
                39.09          5.49        2.3043    0   4   0         2
                39.53          1.96        2.2796    0   1   3         4
                42.07         18.09        2.1476    2   2   1         8
                42.20          1.55        2.1414    1   0   3         4
                43.17          3.47        2.0954    0   2   3         4
                43.39          1.23        2.0854    2   0   2         4
                45.88          7.98        1.9780    2   3   0         4
                46.78          3.93        1.9420    1   2   3         8
                47.10         24.35        1.9294    0   4   2         4
                47.88         31.00        1.8999    2   2   2         8
                50.49          1.76        1.8076    1   4   2         8
                51.22          1.90        1.7836    0   5   1         4
                51.81         17.49        1.7645    0   0   4         2
                52.06          4.04        1.7568    1   3   3         8
                53.08          1.73        1.7255    2   3   2         8
                53.60          1.92        1.7097    2   1   3         8
                54.84          1.11        1.6742    3   0   1         4
                55.81          1.18        1.6472    3   1   1         8
                56.31          1.53        1.6339    0   5   2         4
                59.32          1.24        1.5580    1   5   2         8
                59.81          5.07        1.5462    2   4   2         8
                60.24          2.76        1.5362    0   6   0         2
                60.64          7.50        1.5272    3   1   2         8
                61.72          5.00        1.5030    3   3   0         4
                63.14          1.33        1.4725    1   6   0         4
                63.36          2.22        1.4679    3   2   2         8
                63.40          8.94        1.4672    1   3   4         8
                63.87          6.25        1.4574    2   0   4         4
                69.12          1.56        1.3590    1   6   2         8
                69.82          1.15        1.3471    1   1   5         8
                71.43          2.74        1.3206    2   6   0         4
                73.23          2.55        1.2925    4   0   0         2
                75.75          1.12        1.2556    1   7   1         8
                76.29          1.19        1.2482    1   6   3         8
                77.06          1.08        1.2376    1   5   4         8
                79.95          1.59        1.2000    1   7   2         8
                81.89          1.28        1.1763    0   0   6         2
                82.12          1.90        1.1736    4   2   2         8
                83.42          2.32        1.1586    0   6   4         4
                84.72          2.86        1.1442    3   3   4         8
                85.26          1.11        1.1382    1   1   6         8
                86.84          1.26        1.1216    1   7   3         8
                89.96          1.10        1.0906    3   6   2         8
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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.