Anhydrite
      Antao S
      Powder Diffraction 26 (2011) 326-330
      Crystal-structure analysis of four mineral samples of anhydrite, Ca(SO4),
      using synchrotron high-resolution powder X-ray diffraction data
      Locality: Hants County, Nova Scotia, Canada
      _database_code_amcsd 0020856

      CELL PARAMETERS:    7.0003   6.9923   6.2410   90.000   90.000   90.000
      SPACE GROUP: Amma      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    305.487
      Density (g/cm3):      2.960
      MAX. ABS. INTENSITY / VOLUME**2:      15.80728541    
      RIR:      1.739
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                22.94          8.47        3.8769    1   1   1         8
                25.45        100.00        3.5002    2   0   0         2
                25.48         96.14        3.4962    0   2   0         2
                28.61          4.09        3.1205    0   0   2         2
                31.39         61.10        2.8501    1   0   2         4
                31.99          5.70        2.7978    2   1   1         8
                36.32         13.02        2.4736    2   2   0         4
                38.66          2.43        2.3292    2   0   2         4
                38.68         35.56        2.3280    0   2   2         4
                40.85         38.13        2.2091    1   2   2         8
                41.35         12.41        2.1835    0   3   1         4
                43.38         12.54        2.0861    3   1   1         8
                45.49          9.14        1.9939    0   1   3         4
                46.87          7.03        1.9384    2   2   2         8
                48.73         28.35        1.8687    3   0   2         4
                49.18          6.28        1.8526    2   3   1         8
                52.27         10.67        1.7501    4   0   0         2
                52.34         11.07        1.7481    0   4   0         2
                55.78         27.53        1.6481    3   2   2         8
                57.83          5.07        1.5943    3   3   1         8
                59.02          3.58        1.5650    4   2   0         4
                59.07          4.17        1.5639    2   4   0         4
                60.73          5.35        1.5251    0   4   2         4
                60.83          1.01        1.5229    1   0   4         4
                61.16          1.32        1.5152    1   3   3         8
                62.31         10.01        1.4901    1   4   2         8
                65.50          1.50        1.4251    2   0   4         4
                65.51          4.12        1.4248    0   2   4         4
                65.83          1.77        1.4188    2   3   3         8
                66.88          2.22        1.3989    4   2   2         8
                66.93          1.36        1.3981    2   4   2         8
                67.03          4.34        1.3962    1   2   4         8
                68.74          1.57        1.3656    4   3   1         8
                71.49          9.36        1.3197    2   2   4         8
                72.94          3.17        1.2970    3   0   4         4
                74.24          3.51        1.2774    5   0   2         4
                74.30         10.22        1.2766    3   4   2         8
                77.12          2.05        1.2368    4   4   0         4
                78.69          7.94        1.2160    3   2   4         8
                79.96          4.31        1.1998    5   2   2         8
                82.72          4.18        1.1667    6   0   0         2
                82.83          4.12        1.1654    0   6   0         2
                82.95          1.66        1.1640    0   4   4         4
                84.35          2.02        1.1483    1   4   4         8
                88.31          3.36        1.1067    6   2   0         4
                88.41          3.50        1.1057    2   6   0         4
                88.49          4.78        1.1049    4   2   4         8
                88.53          4.29        1.1045    2   4   4         8
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.