Al2(OHF)3
      Fourquet J, Riviere M, Le Bail A, Nygrens M, Grins J
      European Journal of Solid State and Inorganic Chemistry 25 (1988) 535-540
      Crystal structure and protonic conductivity of pyrochlore phases
      Al2((OH)1-xFx)6*H2O and Al2((OH)1-xFx)6 (x=0.5)
      _cod_database_code 1000087
      _database_code_amcsd 0012522

      CELL PARAMETERS:    9.7490   9.7490   9.7490   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    926.574
      Density (g/cm3):      2.322
      MAX. ABS. INTENSITY / VOLUME**2:      32.95057984    
      RIR:      4.621
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                15.74        100.00        5.6286    1   1   1         8
                25.85          5.37        3.4468    2   2   0        12
                30.41         17.35        2.9394    3   1   1        24
                31.80         15.10        2.8143    2   2   2         8
                36.88          1.51        2.4372    4   0   0         6
                45.59         11.70        1.9900    4   2   2        24
                48.52         10.95        1.8762    3   3   3         8
                53.14         14.20        1.7234    4   4   0        12
                55.79          7.19        1.6479    5   3   1        48
                60.02          1.28        1.5415    6   2   0        24
                62.47          3.57        1.4867    5   3   3        24
                63.27          5.34        1.4697    6   2   2        24
                66.44          1.01        1.4071    4   4   4         8
                68.77          1.29        1.3651    7   1   1        24
                68.77          6.72        1.3651    5   5   1        24
                74.80          4.44        1.2692    7   3   1        48
                78.49          1.46        1.2186    8   0   0         6
                84.29          2.63        1.1489    8   2   2        24
                84.29          1.01        1.1489    6   6   0        12
                87.16          1.95        1.1183    6   6   2        24
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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.