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 = 653 K
      Locality: synthetic refractory silica brick
      _database_code_amcsd 0020934

      CELL PARAMETERS:    8.7430   5.0460   8.2540   90.000   90.000   90.000
      SPACE GROUP: C222_1    
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    364.143
      Density (g/cm3):      2.192
      MAX. ABS. INTENSITY / VOLUME**2:      11.53665499    
      RIR:      1.714
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                20.31         59.63        4.3715    2   0   0         2
                20.32        100.00        4.3703    1   1   0         4
                21.53         85.40        4.1270    0   0   2         2
                23.02         28.05        3.8631    2   0   1         4
                23.03         61.83        3.8623    1   1   1         4
                29.77          8.99        3.0009    2   0   2         4
                29.78         19.66        3.0006    1   1   2         4
                35.57         22.91        2.5237    3   1   0         4
                35.58         11.13        2.5230    0   2   0         2
                38.67          6.06        2.3285    2   0   3         4
                38.67         11.01        2.3284    1   1   3         4
                41.96          2.18        2.1530    3   1   2         4
                42.80          3.48        2.1129    4   0   1         4
                42.81          5.96        2.1124    2   2   1         4
                43.88          3.28        2.0635    0   0   4         2
                47.06          1.27        1.9312    2   2   2         4
                48.81          1.67        1.8660    1   1   4         4
                53.55          2.15        1.7114    4   0   3         4
                53.56          3.77        1.7111    2   2   3         4
                55.63          2.54        1.6522    5   1   0         4
                55.63          1.67        1.6520    4   2   0         4
                55.65          1.66        1.6517    1   3   0         4
                56.83          1.64        1.6201    5   1   1         4
                56.84          1.93        1.6199    4   2   1         4
                56.85          2.16        1.6196    1   3   1         4
                59.89          2.63        1.5444    2   0   5         4
                59.89          5.14        1.5443    1   1   5         4
                60.35          1.00        1.5337    4   2   2         4
                63.88          1.20        1.4572    6   0   0         2
                63.90          2.24        1.4568    3   3   0         4
                65.95          1.84        1.4164    5   1   3         4
                65.96          1.75        1.4163    4   2   3         4
                65.97          1.75        1.4161    1   3   3         4
                71.64          1.24        1.3173    4   0   5         4
                71.65          2.10        1.3172    2   2   5         4
                75.32          1.79        1.2618    6   2   0         4
                79.32          1.27        1.2079    3   1   6         4
                79.42          1.04        1.2067    6   2   2         4
                82.62          1.06        1.1678    5   1   5         4
                82.63          1.12        1.1677    4   2   5         4
                82.64          1.07        1.1676    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.