Asisite
      Welch M D
      Mineralogical Magazine 68 (2004) 247-254
      Pb-Si ordering in sheet-oxychloride minerals: the super-structure of asisite,
      nominally Pb7SiO8Cl2
      Locality: Kombat mine, Namibia
      _database_code_amcsd 0014572

      CELL PARAMETERS:    3.8932   3.8932  22.8030   90.000   90.000   90.000
      SPACE GROUP: I4/mmm    
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    345.625
      Density (g/cm3):      8.058
      MAX. ABS. INTENSITY / VOLUME**2:      413.1752684    
      RIR:     16.696
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                15.54          7.64        5.7007    0   0   4         2
                23.18         16.86        3.8377    1   0   1         8
                23.41          2.90        3.8005    0   0   6         2
                25.71         16.86        3.4651    1   0   3         8
                30.18        100.00        2.9610    1   0   5         8
                31.38          7.93        2.8504    0   0   8         2
                32.52         40.03        2.7529    1   1   0         4
                35.95          3.54        2.4984    1   0   7         8
                39.52          5.86        2.2803    0   0  10         2
                40.46          5.82        2.2295    1   1   6         8
                45.82         14.41        1.9802    1   1   8         8
                46.66         18.11        1.9466    2   0   0         4
                49.48          1.20        1.8422    2   0   4         8
                52.08         13.38        1.7561    1   1  10         8
                52.73          3.61        1.7360    2   1   1        16
                52.84          1.54        1.7326    2   0   6         8
                54.03          4.11        1.6971    2   1   3        16
                56.58         28.88        1.6266    2   1   5        16
                57.32          5.54        1.6075    2   0   8         8
                57.64         11.07        1.5993    1   0  13         8
                59.07          1.86        1.5639    1   1  12         8
                60.27          1.28        1.5355    2   1   7        16
                62.76          5.42        1.4805    2   0  10         8
                65.97          1.85        1.4161    1   0  15         8
                68.12          4.76        1.3765    2   2   0         4
                74.97          1.49        1.2668    0   0  18         2
                76.29          5.09        1.2482    3   0   5         8
                76.92          2.11        1.2395    2   2   8         8
                77.20          8.19        1.2357    2   1  13        16
                77.54          5.25        1.2311    3   1   0         8
                81.72          2.27        1.1784    2   2  10         8
                82.33          1.06        1.1712    3   1   6        16
                84.12          3.66        1.1508    1   1  18         8
                84.63          1.59        1.1451    2   1  15        16
                86.02          3.42        1.1302    3   1   8        16
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.