Tschernichite
      Alberti A, Cruciani G, Galli E, Merlino S, Millini R, Quartieri S, Vezzalini G, Zanardi S
      Journal of Physical Chemistry B106 (2002) 10277-10284
      Crystal structure of tetragonal and monoclinic polytypes of tschernichite,
      the natural counterpart of synthetic zeolite beta
      Locality: Mt. Adamson, Northern Victoria Land, Antarctica
      Sample: large crystal, monoclinic

      CELL PARAMETERS:  17.9830 17.9660 14.6250   90.000  114.310   90.000
      SPACE GROUP: C2/c      
      X-RAY WAVELENGTH:     1.541838
      MAX. ABS. INTENSITY / VOLUME**2:      14.68499807    
               2-THETA      INTENSITY    D-SPACING   H   K   L
                 7.30        100.00       12.1078    1   1   0
                 8.24         41.87       10.7327   -1   1   1
                11.27          9.27        7.8519    1   1   1
                14.11          8.40        6.2775   -2   2   1
                14.63          5.09        6.0539    2   2   0
                15.75          1.21        5.6249    1   3   0
                16.94          1.04        5.2336   -3   1   2
                17.03          5.02        5.2074    1   1   2
                19.07          7.26        4.6536   -1   1   3
                19.16          2.88        4.6332   -1   3   2
                20.51          2.83        4.3296   -3   1   3
                20.55          1.55        4.3216    3   1   1
                20.87          1.23        4.2563    0   4   1
                20.90          5.86        4.2512   -2   2   3
                20.97          5.86        4.2366   -3   3   1
                22.01         17.45        4.0392   -3   3   2
                22.02         14.78        4.0359    3   3   0
                22.23          3.34        3.9995   -4   2   1
                22.23          5.14        3.9983   -2   4   1
                22.55          2.63        3.9428   -4   2   2
                22.58          1.45        3.9386    2   4   0
                22.65          3.51        3.9259    2   2   2
                23.33          1.32        3.8126    1   1   3
                23.86          1.74        3.7293   -2   4   2
                24.77          1.13        3.5945   -4   2   3
                24.89          1.36        3.5776   -3   3   3
                24.92          3.21        3.5730    3   3   1
                25.35          2.23        3.5136   -5   1   2
                25.38          1.51        3.5098    1   5   0
                25.48          1.59        3.4961   -1   1   4
                25.66          1.01        3.4718   -5   1   1
                25.67          1.18        3.4703   -1   5   1
                26.32          1.25        3.3864   -2   2   4
                26.75          4.43        3.3321    0   0   4
                27.28          2.01        3.2690    1   3   3
                28.18          4.63        3.1671   -4   4   1
                28.25          1.06        3.1586    0   4   3
                28.30          5.71        3.1534    2   2   3
                28.44          1.99        3.1388   -4   4   2
                29.10          4.95        3.0682   -3   3   4
                29.15          4.90        3.0639    3   3   2
                29.75          1.02        3.0034   -5   1   4
                29.81          1.75        2.9972   -6   0   2
                29.84          1.44        2.9943    0   6   0
                29.90          1.56        2.9885    1   1   4
                31.05          1.17        2.8804   -1   5   3
                31.11          1.26        2.8752    5   3   0
                31.59          1.20        2.8325    4   2   2
                31.98          1.12        2.7984   -3   5   3
                32.32          3.99        2.7700   -2   2   5
                32.74          1.60        2.7355   -6   0   4
                32.79          1.20        2.7314    6   0   0
                32.79          2.37        2.7313    0   6   2
                37.57          1.02        2.3940   -4   4   5
                42.68          5.25        2.1183   -6   6   2
                47.94          1.05        1.8975    5   5   3
                55.13          1.87        1.6660    0   0   8
                63.99          1.30        1.4550    8   8   1
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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.