Matlockite
      Wyckoff R W G
      Crystal Structures 1 (1963) 294-296
      Second edition. Interscience Publishers, New York, New York
      Note: tetragonal PbFCl structure
      _database_code_amcsd 0011855

      CELL PARAMETERS:    4.1060   4.1060   7.2300   90.000   90.000   90.000
      SPACE GROUP: P4/nmm    
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    121.892
      Density (g/cm3):      7.128
      MAX. ABS. INTENSITY / VOLUME**2:      287.2167590    
      RIR:     13.120
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                12.24         18.16        7.2300    0   0   1         2
                24.63         23.56        3.6150    0   0   2         2
                24.94        100.00        3.5704    1   0   1         8
                30.80         52.72        2.9034    1   1   0         4
                33.01         42.92        2.7133    1   0   2         8
                37.31          3.91        2.4100    0   0   3         2
                39.82         39.85        2.2637    1   1   2         8
                43.54         13.53        2.0784    1   0   3         8
                44.11         25.23        2.0530    2   0   0         4
                45.95          2.55        1.9749    2   0   1         8
                49.13         12.35        1.8544    1   1   3         8
                51.17         11.68        1.7852    2   0   2         8
                51.34         26.00        1.7798    2   1   1        16
                55.55         16.26        1.6543    1   0   4         8
                56.18         15.72        1.6372    2   1   2        16
                59.11          3.93        1.5628    2   0   3         8
                63.72          7.47        1.4606    2   1   3        16
                64.15          6.91        1.4517    2   2   0         4
                64.44          2.58        1.4460    0   0   5         2
                69.82          4.06        1.3471    2   2   2         8
                69.96          4.45        1.3448    3   0   1         8
                72.84          6.75        1.2984    3   1   0         8
                73.11          4.84        1.2944    1   1   5         8
                73.52         12.15        1.2881    2   1   4        16
                74.07          2.97        1.2800    3   0   2         8
                76.63          1.63        1.2435    2   2   3         8
                78.23          7.83        1.2220    3   1   2        16
                80.75          1.66        1.1901    3   0   3         8
                81.40          4.55        1.1822    2   0   5         8
                83.63          2.66        1.1562    1   0   6         8
                84.82          3.66        1.1431    3   1   3        16
                86.52          4.42        1.1249    3   2   1        16
                89.91          3.27        1.0911    3   0   4         8
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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.