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 = 80 K
      _database_code_amcsd 0007362

      CELL PARAMETERS:   13.0230   8.7994   5.8422   90.000   90.231   90.000
      SPACE GROUP: P2_1/a    
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    669.479
      Density (g/cm3):      4.054
      MAX. ABS. INTENSITY / VOLUME**2:      11.33508797    
      RIR:      0.911
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                12.14        100.00        7.2910    1   1   0         4
                13.60         30.64        6.5114    2   0   0         2
                18.23          9.10        4.8671    0   1   1         4
                19.45          9.16        4.5641   -1   1   1         4
                19.49          4.21        4.5541    1   1   1         4
                20.46          1.20        4.3398    2   0   1         2
                21.32          5.96        4.1682    1   2   0         4
                22.77          3.43        3.9047   -2   1   1         4
                22.84         26.67        3.8930    3   1   0         4
                22.85          3.57        3.8922    2   1   1         4
                26.25          2.58        3.3952   -1   2   1         4
                26.28          4.53        3.3911    1   2   1         4
                27.39         25.07        3.2557    4   0   0         2
                27.49          1.57        3.2451   -3   1   1         4
                27.58          3.81        3.2342    3   1   1         4
                28.89         10.76        3.0901    3   2   0         4
                30.61          6.43        2.9211    0   0   2         2
                31.26         37.78        2.8615    1   3   0         4
                31.40         49.47        2.8488   -4   0   1         2
                31.51         48.56        2.8391    4   0   1         2
                32.75         11.15        2.7348   -3   2   1         4
                32.83         11.27        2.7283    3   2   1         4
                33.01         54.20        2.7137   -1   1   2         4
                33.06         44.84        2.7094    1   1   2         4
                33.51         71.39        2.6743    2   3   0         4
                34.21          1.53        2.6213    0   3   1         4
                34.26         17.22        2.6171    4   2   0         4
                34.90          2.54        2.5707   -1   3   1         4
                34.93          4.96        2.5689    1   3   1         4
                35.13         13.43        2.5543   -2   1   2         4
                35.23         13.22        2.5472    2   1   2         4
                35.96         10.14        2.4975    5   1   0         4
                36.94         21.72        2.4336    0   2   2         4
                36.94         20.81        2.4332   -2   3   1         4
                36.99         15.18        2.4301    2   3   1         4
                37.61         15.43        2.3913   -4   2   1         4
                37.71         15.00        2.3855    4   2   1         4
                38.46         15.49        2.3405   -3   1   2         4
                38.60         18.93        2.3324    3   1   2         4
                40.22          2.05        2.2421    3   3   1         4
                41.03          1.57        2.1999    0   4   0         2
                41.45         19.59        2.1786   -4   0   2         2
                41.61          1.92        2.1705    6   0   0         2
                41.62         18.14        2.1699    4   0   2         2
                41.64         22.42        2.1691    1   4   0         4
                42.53          5.38        2.1258   -3   2   2         4
                42.65          5.12        2.1197    3   2   2         4
                42.76         28.51        2.1147   -4   1   2         4
                42.93         24.60        2.1068    4   1   2         4
                43.42         12.73        2.0841    2   4   0         4
                46.23          6.32        1.9638   -2   4   1         4
                46.27         14.19        1.9623    3   4   0         4
                46.27          3.77        1.9622    2   4   1         4
                46.52          7.40        1.9524   -4   2   2         4
                46.64          1.35        1.9476    5   3   0         4
                46.66          1.56        1.9465    6   2   0         4
                46.67          8.60        1.9461    4   2   2         4
                47.83         13.61        1.9019   -5   1   2         4
                47.84          3.47        1.9014    0   1   3         4
                48.02         16.43        1.8946    5   1   2         4
                49.28          1.05        1.8493   -5   3   1         4
                49.29          2.07        1.8487   -6   2   1         4
                49.37          2.34        1.8459    5   3   1         4
                49.41          1.89        1.8447    6   2   1         4
                50.04          2.21        1.8228    4   4   0         4
                50.12          2.08        1.8202    7   1   0         4
                51.79          1.11        1.7652   -1   2   3         4
                52.04          1.19        1.7573    0   4   2         4
                52.42          1.99        1.7456   -6   0   2         2
                52.53          6.69        1.7420   -1   4   2         4
                52.57          5.23        1.7409    1   4   2         4
                52.63          2.20        1.7391    3   1   3         4
                52.63          1.83        1.7389    4   4   1         4
                53.48         18.48        1.7135    7   2   0         4
                53.97          1.62        1.6989    2   5   0         4
                54.09          1.03        1.6955    2   4   2         4
                54.45          1.51        1.6851    0   5   1         4
                54.83          4.75        1.6742   -4   0   3         2
                54.87          6.59        1.6733   -6   3   1         4
                54.97          5.38        1.6703    6   3   1         4
                55.05          5.05        1.6683    4   0   3         2
                55.72          1.16        1.6497   -3   2   3         4
                56.38          7.05        1.6318   -2   5   1         4
                56.42          6.70        1.6309    2   5   1         4
                56.44          7.51        1.6302   -3   4   2         4
                56.53          1.80        1.6279    8   0   0         2
                56.55          7.18        1.6275    3   4   2         4
                56.73         10.98        1.6227   -5   3   2         4
                56.90          9.26        1.6182    5   3   2         4
                56.94          1.60        1.6171    6   2   2         4
                57.20          2.31        1.6106   -1   3   3         4
                57.25          1.12        1.6093    1   3   3         4
                57.58          1.56        1.6007    8   1   0         4
                58.59          3.61        1.5755   -2   3   3         4
                58.69          4.23        1.5730    2   3   3         4
                59.03          2.15        1.5648   -4   2   3         4
                59.24          3.64        1.5599    4   2   3         4
                59.85          1.30        1.5454   -8   1   1         4
                59.86          2.42        1.5450    6   4   0         4
                59.98          1.09        1.5422    8   1   1         4
                60.66         19.20        1.5267    8   2   0         4
                61.85         18.34        1.5000   -6   3   2         4
                62.05         19.98        1.4958    6   3   2         4
                63.30         23.02        1.4693   -2   5   2         4
                63.36         24.49        1.4679    2   5   2         4
                63.43          2.14        1.4666    0   6   0         2
                63.72         26.30        1.4605    0   0   4         2
                63.87          4.29        1.4574    1   6   0         4
                63.99          1.06        1.4551    5   4   2         4
                64.04          1.18        1.4540   -4   3   3         4
                65.17          1.65        1.4315    1   1   4         4
                65.36          7.20        1.4278    9   1   0         4
                65.53          4.82        1.4244   -8   0   2         2
                65.56          1.08        1.4238   -2   4   3         4
                65.73          4.08        1.4205    7   4   0         4
                65.79          5.55        1.4195    8   0   2         2
                67.40          3.47        1.3894    3   6   0         4
                67.97          1.24        1.3792   -5   3   3         4
                68.54          1.14        1.3691   -3   1   4         4
                68.54          1.23        1.3690   -4   5   2         4
                68.66         10.82        1.3670    6   5   0         4
                68.67          1.42        1.3668    4   5   2         4
                70.57          1.03        1.3346   -4   0   4         2
                70.74          1.07        1.3318   -6   5   1         4
                70.81          1.52        1.3306    4   0   4         2
                70.83          1.29        1.3303    6   5   1         4
                72.37          1.03        1.3057    0   5   3         4
                72.49          1.04        1.3039   -4   6   1         4
                72.64          1.41        1.3016   -6   3   3         4
                72.66          2.79        1.3013   -1   3   4         4
                72.72          1.45        1.3004    1   3   4         4
                72.91          2.27        1.2974    6   3   3         4
                73.51          2.12        1.2883   10   1   0         4
                73.74          1.09        1.2848   -9   1   2         4
                73.88          4.83        1.2827   -2   3   4         4
                73.98          2.38        1.2813   -8   3   2         4
                74.00          6.04        1.2809    2   3   4         4
                74.01          3.25        1.2809   -2   5   3         4
                74.10          2.95        1.2795    2   5   3         4
                74.22          1.56        1.2778    8   3   2         4
                74.26          1.77        1.2771   -4   2   4         4
                74.50          1.16        1.2736    4   2   4         4
                74.90          1.04        1.2678   -9   3   1         4
                75.24          1.69        1.2629   -5   1   4         4
                75.54          1.00        1.2587    5   1   4         4
                76.25          5.31        1.2487   10   2   0         4
                76.31          1.33        1.2479    5   6   1         4
                77.31          1.46        1.2343    2   7   0         4
                78.75          1.36        1.2152    6   6   0         4
                79.01          1.55        1.2119   -1   4   4         4
                79.07          1.94        1.2111    1   4   4         4
                80.32          1.16        1.1953    2   4   4         4
                80.35          1.77        1.1950    8   5   0         4
                80.96          2.65        1.1875   -9   3   2         4
                81.22          2.77        1.1843    9   3   2         4
                82.20          1.68        1.1727    4   7   0         4
                82.21          1.57        1.1726   -3   4   4         4
                82.38          1.99        1.1706    3   4   4         4
                82.68          1.15        1.1671  -10   3   1         4
                82.83          1.34        1.1654   10   3   1         4
                85.87          1.16        1.1317   -3   6   3         4
                87.24          1.38        1.1175    6   5   3         4
                87.62          2.71        1.1136   -7   2   4         4
                88.03          2.48        1.1095    7   2   4         4
                88.61          1.82        1.1037  -10   3   2         4
                88.87          1.72        1.1012   -4   0   5         2
                88.90          1.96        1.1008   10   3   2         4
                89.16          1.92        1.0983    4   0   5         2
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.