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 = 443 K
      Locality: synthetic refractory silica brick
      _database_code_amcsd 0020931

      CELL PARAMETERS:    8.7300   5.0000   8.2010   90.000   90.000   90.000
      SPACE GROUP: C222_1    
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    357.974
      Density (g/cm3):      2.229
      MAX. ABS. INTENSITY / VOLUME**2:      10.89908206    
      RIR:      1.592
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                20.35         65.44        4.3650    2   0   0         2
                20.47        100.00        4.3388    1   1   0         4
                21.67         88.91        4.1005    0   0   2         2
                23.08         30.91        3.8532    2   0   1         4
                23.19         67.82        3.8351    1   1   1         4
                29.90          8.60        2.9886    2   0   2         4
                29.98         28.85        2.9802    1   1   2         4
                35.70         24.58        2.5151    3   1   0         4
                35.92          9.53        2.5000    0   2   0         2
                37.40          1.52        2.4045    3   1   1         4
                37.61          3.57        2.3914    0   2   1         4
                38.87          6.63        2.3168    2   0   3         4
                38.94          8.80        2.3129    1   1   3         4
                42.15          2.63        2.1439    3   1   2         4
                42.88          3.94        2.1091    4   0   1         4
                43.13          5.88        2.0972    2   2   1         4
                44.17          3.03        2.0503    0   0   4         2
                47.41          2.76        1.9176    2   2   2         4
                49.15          4.92        1.8537    1   1   4         4
                53.74          2.41        1.7056    4   0   3         4
                53.96          3.06        1.6993    2   2   3         4
                55.77          2.85        1.6484    5   1   0         4
                55.92          1.38        1.6441    4   2   0         4
                56.98          2.27        1.6161    5   1   1         4
                57.14          2.63        1.6121    4   2   1         4
                57.40          3.60        1.6054    1   3   1         4
                60.28          3.01        1.5354    2   0   5         4
                60.33          4.72        1.5342    1   1   5         4
                60.54          1.11        1.5294    5   1   2         4
                60.69          1.53        1.5260    4   2   2         4
                60.93          1.68        1.5204    1   3   2         4
                62.31          1.68        1.4901    2   2   4         4
                63.99          1.45        1.4550    6   0   0         2
                64.42          1.30        1.4463    3   3   0         4
                65.54          2.08        1.4243    3   3   1         4
                66.20          2.26        1.4116    5   1   3         4
                66.35          1.43        1.4089    4   2   3         4
                66.58          1.29        1.4045    1   3   3         4
                72.02          1.46        1.3112    4   0   5         4
                72.21          2.02        1.3083    2   2   5         4
                74.11          1.38        1.2793    1   3   4         4
                75.62          1.54        1.2575    6   2   0         4
                76.66          1.44        1.2430    6   2   1         4
                77.20          1.57        1.2357    0   4   1         4
                79.87          1.51        1.2009    3   1   6         4
                83.07          1.33        1.1627    5   1   5         4
                83.20          1.03        1.1612    4   2   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.