Stishovite
      Yamanaka T, Fukuda T, Tsuchiya J
      Physics and Chemistry of Minerals 29 (2002) 633-641
      Bonding character of SiO2 stishovite under high pressures up to 30 GPa
      Sample: P = 29.1 GPa
      _database_code_amcsd 0008739

      CELL PARAMETERS:    4.0440   4.0440   2.6190   90.000   90.000   90.000
      SPACE GROUP: P4_2/mnm  
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     42.831
      Density (g/cm3):      4.658
      MAX. ABS. INTENSITY / VOLUME**2:      28.10462994    
      RIR:      1.965
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                31.28        100.00        2.8595    1   1   0         4
                41.06         27.68        2.1983    1   0   1         8
                47.05         40.30        1.9314    1   1   1         8
                50.46         13.42        1.8085    2   1   0         8
                62.40         57.92        1.4882    2   1   1        16
                65.26         19.51        1.4298    2   2   0         4
                72.13         10.24        1.3095    0   0   2         2
                74.15          6.64        1.2788    3   1   0         8
                75.80          1.07        1.2549    2   2   1         8
                80.06         25.26        1.1986    3   0   1         8
                80.71         10.49        1.1906    1   1   2         8
                84.27          2.30        1.1491    3   1   1        16
                89.08          1.24        1.0991    2   0   2         8
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.