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 = 1 bar
      _database_code_amcsd 0015462

      CELL PARAMETERS:    4.9140   4.9140   5.4060   90.000   90.000  120.000
      SPACE GROUP: P3_121    
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    113.052
      Density (g/cm3):      2.647
      MAX. ABS. INTENSITY / VOLUME**2:      35.41421163    
      RIR:      4.356
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                20.87         19.74        4.2556    1   0   0         6
                26.66         30.26        3.3439    0   1   1         6
                26.66         69.74        3.3439    1   0   1         6
                36.57          7.26        2.4570    1   1   0         3
                39.50          6.18        2.2817    0   1   2         6
                39.50          1.04        2.2817    1   0   2         6
                40.32          3.18        2.2368    1   1   1         6
                42.48          5.25        2.1278    2   0   0         6
                45.83          2.14        1.9800    0   2   1         6
                50.18         12.81        1.8181    1   1   2         6
                54.92          3.14        1.6719    2   0   2         6
                55.37          1.63        1.6594    1   0   3         6
                60.01          5.10        1.5417    2   1   1         6
                60.01          4.17        1.5417    1   2   1         6
                64.08          1.76        1.4531    1   1   3         6
                67.80          1.42        1.3823    1   2   2         6
                67.80          4.28        1.3823    2   1   2         6
                68.20          5.49        1.3751    0   2   3         6
                68.20          1.39        1.3751    2   0   3         6
                68.37          4.23        1.3721    3   0   1         6
                73.52          1.79        1.2881    0   1   4         6
                75.72          1.96        1.2561    0   3   2         6
                79.95          2.41        1.2000    1   2   3         6
                81.24          2.52        1.1842    1   1   4         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.