Tridymite
      Kihara K, Matsumoto T, Imamura M
      Zeitschrift fur Kristallographie 177 (1986) 27-38
      Structural change of orthorhombic-I tridymite with temperature:
      A study based on second-order thermal-vibrational parameters
      Note: Dollase's model, T = 733 K
      Locality: synthetic refractory silica brick
      _database_code_amcsd 0020936

      CELL PARAMETERS:    8.7400   5.0400   8.2400   90.000   90.000   90.000
      SPACE GROUP: C222_1    
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    362.969
      Density (g/cm3):      2.199
      MAX. ABS. INTENSITY / VOLUME**2:      12.47265331    
      RIR:      1.847
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                20.32         51.03        4.3700    2   0   0         2
                20.34        100.00        4.3661    1   1   0         4
                21.57         79.69        4.1200    0   0   2         2
                23.04         27.16        3.8607    2   0   1         4
                23.05         54.75        3.8580    1   1   1         4
                29.80          8.63        2.9978    2   0   2         4
                29.82         17.26        2.9965    1   1   2         4
                35.59         21.60        2.5223    3   1   0         4
                35.63         10.47        2.5200    0   2   0         2
                38.72          5.65        2.3255    2   0   3         4
                38.73         11.37        2.3249    1   1   3         4
                42.00          2.08        2.1512    3   1   2         4
                42.82          2.87        2.1120    4   0   1         4
                42.86          5.88        2.1102    2   2   1         4
                43.95          3.00        2.0600    0   0   4         2
                47.11          1.15        1.9290    2   2   2         4
                53.60          1.93        1.7099    4   0   3         4
                53.63          3.88        1.7090    2   2   3         4
                55.65          2.01        1.6515    5   1   0         4
                55.68          1.99        1.6509    4   2   0         4
                55.72          1.90        1.6498    1   3   0         4
                56.86          1.51        1.6193    5   1   1         4
                56.88          1.55        1.6187    4   2   1         4
                56.92          1.49        1.6177    1   3   1         4
                59.99          2.40        1.5420    2   0   5         4
                60.00          4.83        1.5418    1   1   5         4
                63.91          1.11        1.4567    6   0   0         2
                63.97          2.19        1.4554    3   3   0         4
                66.01          1.78        1.4153    5   1   3         4
                66.03          1.78        1.4149    4   2   3         4
                66.06          1.72        1.4143    1   3   3         4
                71.74          1.02        1.3157    4   0   5         4
                71.76          2.02        1.3153    2   2   5         4
                75.37          1.80        1.2611    6   2   0         4
                79.46          1.19        1.2061    3   1   6         4
                79.48          1.10        1.2059    6   2   2         4
                82.73          1.02        1.1665    5   1   5         4
                82.75          1.03        1.1663    4   2   5         4
                82.78          1.00        1.1659    1   3   5         4
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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.