Virgilite
      Li C T
      Zeitschrift fur Kristallographie 127 (1968) 327-348
      The crystal structure of LiAlSi2O6 III (high-quartz solid solution)
      _database_code_amcsd 0010668

      CELL PARAMETERS:    5.2170   5.2170   5.4640   90.000   90.000  120.000
      SPACE GROUP: P6_222    
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    128.790
      Density (g/cm3):      2.399
      MAX. ABS. INTENSITY / VOLUME**2:      34.61350731    
      RIR:      4.698
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                19.65         12.70        4.5181    1   0   0         6
                25.58        100.00        3.4819    1   0   1        12
                34.38          3.65        2.6085    1   1   0         6
                38.51          1.66        2.3378    1   0   2        12
                39.91          4.09        2.2590    2   0   0         6
                43.34          3.41        2.0876    2   0   1        12
                48.24         18.87        1.8866    1   1   2        12
                52.57          1.48        1.7409    2   0   2        12
                56.46          8.42        1.6299    2   1   1        12
                61.58          1.26        1.5060    3   0   0         6
                64.14          1.02        1.4519    3   0   1        12
                64.33          4.12        1.4481    2   1   2        12
                65.87          8.80        1.4179    2   0   3        12
                71.54          2.74        1.3189    3   0   2        12
                72.47          3.08        1.3043    2   2   0         6
                76.46          2.71        1.2457    2   1   3        12
                78.28          4.88        1.2214    3   1   1        12
                79.15          2.97        1.2101    1   1   4        12
                85.20          1.58        1.1390    3   1   2        12
                86.08          1.31        1.1295    4   0   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.