Mascagnite
      Schlemper E O, Hamilton W C
      Journal of Chemical Physics 44 (1966) 4498-4509
      Neutron-diffraction study of the structures of ferroelectric and paraelectric
      ammonium sulfate
      Note: ferroelectric, T = 180 K
      Locality: synthetic
      _database_code_amcsd 0012987

      CELL PARAMETERS:    7.8370  10.6100   5.9670   90.000   90.000   90.000
      SPACE GROUP: Pna2_1    
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    496.159
      Density (g/cm3):      1.769
      MAX. ABS. INTENSITY / VOLUME**2:      8.582958149    
      RIR:      1.580
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                16.71         11.20        5.3050    0   2   0         2
                17.05         22.17        5.2009    0   1   1         2
                20.21         43.21        4.3931    1   2   0         4
                20.49        100.00        4.3335    1   1   1         4
                22.69         30.87        3.9185    2   0   0         2
                28.32         20.14        3.1519    2   2   0         4
                28.52         22.51        3.1296    2   1   1         4
                29.36         41.88        3.0424    0   3   1         2
                29.95         29.01        2.9835    0   0   2         1
                31.54          1.00        2.8362    1   3   1         4
                32.12          2.01        2.7870    2   2   1         4
                33.22          2.91        2.6967    1   1   2         4
                33.79         13.72        2.6525    0   4   0         2
                34.15          2.24        2.6254    2   3   0         4
                34.49          4.67        2.6005    0   2   2         2
                35.39         11.96        2.5366    3   1   0         4
                36.40          1.71        2.4681    1   2   2         4
                37.42          3.20        2.4031    2   3   1         4
                38.57          7.76        2.3344    3   1   1         4
                38.88          7.79        2.3165    2   1   2         4
                38.89          6.89        2.3156    1   4   1         4
                41.09          3.48        2.1966    2   4   0         4
                41.23          2.80        2.1896    1   3   2         4
                41.68          9.75        2.1667    2   2   2         4
                43.05          3.12        2.1013    3   3   0         4
                43.92          1.05        2.0613    2   4   1         4
                46.05          5.09        1.9710    2   3   2         4
                46.34          2.84        1.9592    4   0   0         2
                46.90          3.71        1.9373    1   5   1         4
                47.30          1.50        1.9218    1   4   2         4
                47.96          3.70        1.8968    1   1   3         4
                48.81          1.23        1.8660    2   5   0         4
                51.53          1.33        1.7736    2   0   3         2
                51.69          1.56        1.7683    0   6   0         2
                52.81          2.64        1.7336    0   3   3         2
                54.19          2.16        1.6927    1   3   3         4
                55.81          2.05        1.6472    4   3   1         4
                56.16          2.72        1.6377    4   0   2         2
                57.15          1.51        1.6118    2   6   0         4
                59.02          1.34        1.5652    3   1   3         4
                59.40          1.02        1.5560    2   6   1         4
                60.90          2.57        1.5212    0   6   2         2
                61.82          3.05        1.5007    5   1   1         4
                62.23          2.46        1.4918    0   0   4         1
                62.50          1.08        1.4861    4   3   2         4
                63.05          1.17        1.4744    2   4   3         4
                63.31          1.77        1.4691    0   7   1         2
                64.54          1.69        1.4439    1   7   1         4
                65.65          1.20        1.4222    3   6   1         4
                65.86          1.94        1.4181    2   6   2         4
                69.74          1.22        1.3484    2   2   4         4
                70.10          2.02        1.3424    5   2   2         4
                74.03          1.15        1.2805    3   7   1         4
                77.36          1.75        1.2335    5   5   1         4
                78.16          1.63        1.2229    5   1   3         4
                80.63          1.50        1.1915    1   7   3         4
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.