Ilvaite
      Ghose S, Hewat A W, Marezio M
      Physics and Chemistry of Minerals 11 (1984) 67-74
      A neutron powder diffraction study of the crystal and
      magnetic structures of ilvaite from 305 K to 5 K - a mixed
      valence iron silicate with an electronic transition
      Sample: T = 305 K
      _database_code_amcsd 0007364

      CELL PARAMETERS:   13.0207   8.8121   5.8609   90.000   90.249   90.000
      SPACE GROUP: P2_1/a    
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    672.472
      Density (g/cm3):      4.035
      MAX. ABS. INTENSITY / VOLUME**2:      10.78255631    
      RIR:      0.870
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                12.13        100.00        7.2979    1   1   0         4
                13.60         28.59        6.5103    2   0   0         2
                18.18          9.56        4.8801    0   1   1         4
                19.40          8.44        4.5751   -1   1   1         4
                19.45          5.24        4.5642    1   1   1         4
                21.29          6.95        4.1736    1   2   0         4
                22.73          3.44        3.9116   -2   1   1         4
                22.81          2.73        3.8981    2   1   1         4
                22.84         25.43        3.8936    3   1   0         4
                26.20          4.77        3.4019   -1   2   1         4
                26.23          2.41        3.3974    1   2   1         4
                27.40         25.01        3.2551    4   0   0         2
                27.45          3.14        3.2490   -3   1   1         4
                27.55          4.14        3.2373    3   1   1         4
                28.88         13.24        3.0920    3   2   0         4
                30.51          7.05        2.9304    0   0   2         2
                31.22         39.85        2.8654    1   3   0         4
                31.38         53.65        2.8510   -4   0   1         2
                31.50         49.98        2.8405    4   0   1         2
                32.70         10.96        2.7383   -3   2   1         4
                32.79          8.80        2.7313    3   2   1         4
                32.91         52.08        2.7217   -1   1   2         4
                32.97         52.12        2.7171    1   1   2         4
                33.47         74.19        2.6775    2   3   0         4
                34.14          2.15        2.6260    0   3   1         4
                34.25         17.20        2.6181    4   2   0         4
                34.84          4.54        2.5752   -1   3   1         4
                34.87          3.41        2.5732    1   3   1         4
                35.04         13.55        2.5610   -2   1   2         4
                35.15         13.23        2.5534    2   1   2         4
                35.96         10.44        2.4974    5   1   0         4
                36.84         22.66        2.4400    0   2   2         4
                36.88         17.41        2.4370   -2   3   1         4
                36.93         17.42        2.4337    2   3   1         4
                37.58         14.74        2.3936   -4   2   1         4
                37.68         17.71        2.3874    4   2   1         4
                38.37         15.48        2.3458   -3   1   2         4
                38.52         18.49        2.3370    3   1   2         4
                40.10          2.86        2.2487   -3   3   1         4
                40.17          1.44        2.2448    3   3   1         4
                40.97          1.39        2.2030    0   4   0         2
                41.37         20.91        2.1826   -4   0   2         2
                41.55         17.53        2.1732    4   0   2         2
                41.58         22.43        2.1722    1   4   0         4
                41.62          3.09        2.1701    6   0   0         2
                42.43          5.27        2.1302   -3   2   2         4
                42.57          5.48        2.1237    3   2   2         4
                42.68         28.24        2.1186   -4   1   2         4
                42.86         26.47        2.1100    4   1   2         4
                43.36         13.32        2.0868    2   4   0         4
                46.15          5.01        1.9668   -2   4   1         4
                46.20          4.98        1.9650    2   4   1         4
                46.21         13.52        1.9644    3   4   0         4
                46.43          7.78        1.9558   -4   2   2         4
                46.60          8.02        1.9490    4   2   2         4
                46.61          1.35        1.9486    5   3   0         4
                46.66          1.60        1.9468    6   2   0         4
                47.68          4.11        1.9073    0   1   3         4
                47.75         14.38        1.9047   -5   1   2         4
                47.96         16.14        1.8969    5   1   2         4
                49.23          2.08        1.8509   -5   3   1         4
                49.26          1.78        1.8497   -6   2   1         4
                49.33          1.41        1.8473    5   3   1         4
                49.39          1.99        1.8454    6   2   1         4
                49.99          2.37        1.8245    4   4   0         4
                50.12          2.48        1.8200    7   1   0         4
                51.63          1.26        1.7703   -1   2   3         4
                51.93          1.34        1.7609    0   4   2         4
                52.31          1.61        1.7489   -3   1   3         4
                52.42          6.69        1.7456   -1   4   2         4
                52.45          6.00        1.7444    1   4   2         4
                52.49          1.77        1.7434    3   1   3         4
                52.49          1.55        1.7432   -4   4   1         4
                52.59          1.09        1.7404    6   0   2         2
                53.47         17.25        1.7136    7   2   0         4
                53.89          1.68        1.7012    2   5   0         4
                54.36          1.15        1.6878    0   5   1         4
                54.56          1.01        1.6819    5   4   0         4
                54.69          5.34        1.6783   -4   0   3         2
                54.83          5.49        1.6744   -6   3   1         4
                54.92          4.78        1.6719    4   0   3         2
                54.94          6.54        1.6712    6   3   1         4
                56.29          6.78        1.6343   -2   5   1         4
                56.33          6.34        1.6333    2   5   1         4
                56.33          8.42        1.6332   -3   4   2         4
                56.44          7.98        1.6302    3   4   2         4
                56.54          2.05        1.6276    8   0   0         2
                56.64         10.54        1.6251   -5   3   2         4
                56.66          1.39        1.6245   -6   2   2         4
                56.83          9.82        1.6202    5   3   2         4
                56.88          1.50        1.6187    6   2   2         4
                57.03          1.54        1.6149   -1   3   3         4
                57.09          2.18        1.6134    1   3   3         4
                57.59          1.91        1.6005    8   1   0         4
                58.43          4.74        1.5795   -2   3   3         4
                58.54          2.99        1.5768    2   3   3         4
                58.88          2.77        1.5684   -4   2   3         4
                59.10          3.13        1.5631    4   2   3         4
                59.82          2.07        1.5460    6   4   0         4
                59.84          1.27        1.5456   -8   1   1         4
                59.98          1.13        1.5423    8   1   1         4
                60.66         18.74        1.5267    8   2   0         4
                61.77         18.64        1.5019   -6   3   2         4
                61.98         18.44        1.4973    6   3   2         4
                63.17         22.47        1.4720   -2   5   2         4
                63.24         23.76        1.4705    2   5   2         4
                63.32          1.88        1.4687    0   6   0         2
                63.49         26.44        1.4652    0   0   4         2
                63.77          4.43        1.4594    1   6   0         4
                65.37          7.09        1.4276    9   1   0         4
                65.48          5.33        1.4255   -8   0   2         2
                65.70          4.30        1.4212    7   4   0         4
                65.75          5.23        1.4202    8   0   2         2
                67.30          3.80        1.3912    3   6   0         4
                68.07          1.13        1.3774    5   3   3         4
                68.31          1.00        1.3731   -3   1   4         4
                68.42          1.43        1.3712   -4   5   2         4
                68.55          1.29        1.3689    4   5   2         4
                68.60         10.73        1.3681    6   5   0         4
                69.41          1.15        1.3540   -3   6   1         4
                70.61          1.70        1.3339    4   0   4         2
                70.76          1.17        1.3315    6   5   1         4
                72.19          1.01        1.3086    0   5   3         4
                72.42          2.09        1.3051   -1   3   4         4
                72.48          2.38        1.3040    1   3   4         4
                72.49          1.56        1.3039   -6   3   3         4
                72.78          1.81        1.2994    6   3   3         4
                73.53          1.94        1.2881   10   1   0         4
                73.64          5.03        1.2863   -2   3   4         4
                73.69          1.12        1.2856   -9   1   2         4
                73.77          6.12        1.2844    2   3   4         4
                73.82          3.41        1.2837   -2   5   3         4
                73.90          1.66        1.2824   -8   3   2         4
                73.92          2.68        1.2822    2   5   3         4
                74.03          1.72        1.2805   -4   2   4         4
                74.16          1.72        1.2786    8   3   2         4
                74.26          1.10        1.2771    7   4   2         4
                74.29          1.14        1.2767    4   2   4         4
                75.02          1.66        1.2661   -5   1   4         4
                75.34          1.23        1.2615    5   1   4         4
                76.13          1.17        1.2504   -5   6   1         4
                76.21          1.15        1.2493    5   6   1         4
                76.25          4.94        1.2487   10   2   0         4
                77.18          1.36        1.2360    2   7   0         4
                78.66          1.48        1.2163    6   6   0         4
                78.76          1.41        1.2151   -1   4   4         4
                78.82          1.91        1.2143    1   4   4         4
                80.29          1.45        1.1957    8   5   0         4
                80.89          2.54        1.1884   -9   3   2         4
                81.17          2.72        1.1850    9   3   2         4
                81.96          1.46        1.1756   -3   4   4         4
                82.08          1.62        1.1741    4   7   0         4
                82.14          1.71        1.1734    3   4   4         4
                82.65          1.25        1.1674  -10   3   1         4
                82.81          1.18        1.1656   10   3   1         4
                86.79          1.01        1.1221   -6   5   3         4
                87.07          1.19        1.1192    6   5   3         4
                87.40          2.46        1.1158   -7   2   4         4
                87.84          2.48        1.1114    7   2   4         4
                88.54          2.10        1.1044   -4   0   5         2
                88.54          1.57        1.1044  -10   3   2         4
                88.85          1.84        1.1013    4   0   5         2
                88.85          1.82        1.1013   10   3   2         4
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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.