Quartz
      Hazen R M, Finger L W, Hemley R J, Mao H K
      Solid State Communications 72 (1989) 507-511
      High-pressure crystal chemistry and amorphization of alpha-quartz
      Locality: synthetic
      Sample: P = 2.0 Gpa
      _database_code_amcsd 0015463

      CELL PARAMETERS:    4.8120   4.8120   5.3270   90.000   90.000  120.000
      SPACE GROUP: P3_121    
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    106.823
      Density (g/cm3):      2.802
      MAX. ABS. INTENSITY / VOLUME**2:      34.56128387    
      RIR:      4.017
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                21.32         20.46        4.1673    1   0   0         6
                27.17         25.39        3.2823    0   1   1         6
                27.17         74.61        3.2823    1   0   1         6
                37.38          9.35        2.4060    1   1   0         3
                40.18          8.19        2.2443    0   1   2         6
                40.18          2.11        2.2443    1   0   2         6
                41.17          4.37        2.1927    1   1   1         6
                43.43          6.48        2.0837    2   0   0         6
                46.82          1.73        1.9405    0   2   1         6
                51.16         10.75        1.7854    1   1   2         6
                56.04          1.74        1.6411    0   2   2         6
                56.04          3.00        1.6411    2   0   2         6
                56.32          2.04        1.6336    1   0   3         6
                61.38          4.75        1.5105    1   2   1         6
                61.38          5.53        1.5105    2   1   1         6
                65.31          1.99        1.4287    1   1   3         6
                69.31          5.23        1.3558    2   1   2         6
                69.31          1.23        1.3558    1   2   2         6
                69.56          5.51        1.3515    0   2   3         6
                69.56          1.06        1.3515    2   0   3         6
                69.99          5.49        1.3442    3   0   1         6
                74.85          2.59        1.2685    0   1   4         6
                77.50          2.51        1.2317    0   3   2         6
                81.73          2.81        1.1783    1   2   3         6
                82.85          2.14        1.1652    1   1   4         6
                83.67          1.10        1.1558    3   1   0         6
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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.