Quartz
      Levien L, Prewitt C T, Weidner D J
      American Mineralogist 65 (1980) 920-930
      Structure and elastic properties of quartz at pressure
      P = 1 atm
      _database_code_amcsd 0000789

      CELL PARAMETERS:    4.9160   4.9160   5.4054   90.000   90.000  120.000
      SPACE GROUP: P3_221    
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    113.131
      Density (g/cm3):      2.645
      MAX. ABS. INTENSITY / VOLUME**2:      35.16956101    
      RIR:      4.329
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                20.87         19.93        4.2574    1   0   0         6
                26.65         69.90        3.3446    0   1   1         6
                26.65         30.10        3.3446    1   0   1         6
                36.56          7.13        2.4580    1   1   0         3
                39.49          1.01        2.2818    0   1   2         6
                39.49          6.18        2.2818    1   0   2         6
                40.31          3.19        2.2375    1   1   1         6
                42.47          5.25        2.1287    2   0   0         6
                45.81          1.00        1.9806    0   2   1         6
                45.81          2.09        1.9806    2   0   1         6
                50.17         12.58        1.8184    1   1   2         6
                54.90          3.09        1.6723    0   2   2         6
                55.37          1.61        1.6593    0   1   3         6
                59.98          4.11        1.5423    2   1   1         6
                59.98          4.94        1.5423    1   2   1         6
                64.08          1.72        1.4532    1   1   3         6
                67.78          1.38        1.3826    2   1   2         6
                67.78          4.18        1.3826    1   2   2         6
                68.19          1.36        1.3753    0   2   3         6
                68.19          5.31        1.3753    2   0   3         6
                68.34          4.13        1.3726    0   3   1         6
                73.53          1.73        1.2880    1   0   4         6
                75.70          1.91        1.2565    3   0   2         6
                79.93          2.30        1.2002    2   1   3         6
                81.24          2.41        1.1842    1   1   4         6
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.