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 = 5 K
      _database_code_amcsd 0007361

      CELL PARAMETERS:   13.0229   8.7977   5.8428   90.000   90.234   90.000
      SPACE GROUP: P2_1/a    
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    669.413
      Density (g/cm3):      4.055
      MAX. ABS. INTENSITY / VOLUME**2:      11.64552922    
      RIR:      0.935
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                12.14        100.00        7.2901    1   1   0         4
                13.60         31.90        6.5114    2   0   0         2
                18.23          9.23        4.8672    0   1   1         4
                19.45          9.93        4.5643   -1   1   1         4
                19.49          4.01        4.5541    1   1   1         4
                20.46          1.46        4.3399    2   0   1         2
                21.32          6.25        4.1675    1   2   0         4
                22.77          3.94        3.9048   -2   1   1         4
                22.84         25.77        3.8928    3   1   0         4
                22.85          3.26        3.8921    2   1   1         4
                26.25          2.57        3.3950   -1   2   1         4
                26.28          5.10        3.3908    1   2   1         4
                27.39         24.74        3.2557    4   0   0         2
                27.49          1.28        3.2451   -3   1   1         4
                27.58          3.80        3.2342    3   1   1         4
                28.90         10.75        3.0898    3   2   0         4
                30.60          5.91        2.9214    0   0   2         2
                31.26         35.30        2.8609    1   3   0         4
                31.40         46.86        2.8489   -4   0   1         2
                31.51         46.99        2.8391    4   0   1         2
                32.75         11.16        2.7347   -3   2   1         4
                32.83         10.71        2.7281    3   2   1         4
                33.01         53.78        2.7139   -1   1   2         4
                33.06         43.14        2.7096    1   1   2         4
                33.51         69.38        2.6739    2   3   0         4
                33.68          1.22        2.6613    2   0   2         2
                34.21          1.51        2.6210    0   3   1         4
                34.27         16.40        2.6169    4   2   0         4
                34.91          2.74        2.5703   -1   3   1         4
                34.93          4.85        2.5685    1   3   1         4
                35.13         13.13        2.5545   -2   1   2         4
                35.23         13.58        2.5473    2   1   2         4
                35.96         10.63        2.4974    5   1   0         4
                36.94         20.43        2.4336    0   2   2         4
                36.95         21.35        2.4329   -2   3   1         4
                37.00         14.58        2.4298    2   3   1         4
                37.62         14.55        2.3912   -4   2   1         4
                37.71         14.00        2.3854    4   2   1         4
                38.46         15.80        2.3407   -3   1   2         4
                38.60         16.76        2.3325    3   1   2         4
                40.23          1.84        2.2419    3   3   1         4
                41.04          1.53        2.1994    0   4   0         2
                41.44         19.28        2.1788   -4   0   2         2
                41.61          1.72        2.1705    6   0   0         2
                41.62         17.71        2.1699    4   0   2         2
                41.64         21.10        2.1687    1   4   0         4
                42.52          5.33        2.1258   -3   2   2         4
                42.65          5.02        2.1197    3   2   2         4
                42.76         27.67        2.1149   -4   1   2         4
                42.93         24.27        2.1068    4   1   2         4
                43.43         12.15        2.0838    2   4   0         4
                45.83          1.10        1.9798    6   1   1         4
                46.24          6.71        1.9635   -2   4   1         4
                46.27         14.46        1.9620    3   4   0         4
                46.28          3.41        1.9619    2   4   1         4
                46.51          7.24        1.9524   -4   2   2         4
                46.64          1.22        1.9474    5   3   0         4
                46.67          1.53        1.9464    6   2   0         4
                46.67          8.16        1.9460    4   2   2         4
                47.82         13.01        1.9020   -5   1   2         4
                47.83          3.06        1.9015    0   1   3         4
                48.02         16.44        1.8946    5   1   2         4
                49.29          1.85        1.8487   -6   2   1         4
                49.37          2.10        1.8458    5   3   1         4
                49.41          1.56        1.8446    6   2   1         4
                49.91          1.05        1.8273   -2   1   3         4
                50.05          2.16        1.8225    4   4   0         4
                50.12          1.67        1.8201    7   1   0         4
                51.79          1.10        1.7653   -1   2   3         4
                52.05          1.17        1.7571    0   4   2         4
                52.41          2.25        1.7457   -6   0   2         2
                52.54          6.80        1.7419   -1   4   2         4
                52.57          5.12        1.7408    1   4   2         4
                52.62          2.18        1.7392    3   1   3         4
                52.64          1.80        1.7387    4   4   1         4
                53.48         17.96        1.7135    7   2   0         4
                53.98          1.72        1.6986    2   5   0         4
                54.46          1.58        1.6848    0   5   1         4
                54.83          4.41        1.6744   -4   0   3         2
                54.87          6.37        1.6732   -6   3   1         4
                54.98          5.16        1.6702    6   3   1         4
                55.04          4.92        1.6684    4   0   3         2
                55.72          1.09        1.6498   -3   2   3         4
                56.39          6.97        1.6316   -2   5   1         4
                56.43          6.22        1.6306    2   5   1         4
                56.45          7.02        1.6301   -3   4   2         4
                56.53          1.70        1.6278    8   0   0         2
                56.55          6.89        1.6274    3   4   2         4
                56.73         10.71        1.6227   -5   3   2         4
                56.91          9.21        1.6181    5   3   2         4
                56.94          1.86        1.6171    6   2   2         4
                57.19          2.18        1.6106   -1   3   3         4
                57.58          1.38        1.6007    8   1   0         4
                58.59          3.34        1.5755   -2   3   3         4
                58.69          4.26        1.5730    2   3   3         4
                59.03          1.97        1.5648   -4   2   3         4
                59.23          3.50        1.5599    4   2   3         4
                59.85          1.39        1.5454   -8   1   1         4
                59.87          2.74        1.5449    6   4   0         4
                59.98          1.05        1.5422    8   1   1         4
                60.66         18.30        1.5267    8   2   0         4
                61.85         17.86        1.5000   -6   3   2         4
                62.05         19.48        1.4957    6   3   2         4
                63.30         22.09        1.4691   -2   5   2         4
                63.37         23.98        1.4678    2   5   2         4
                63.44          2.28        1.4663    0   6   0         2
                63.71         25.32        1.4607    0   0   4         2
                63.89          4.15        1.4571    1   6   0         4
                64.04          1.56        1.4541   -4   3   3         4
                65.16          2.12        1.4316    1   1   4         4
                65.36          6.67        1.4278    9   1   0         4
                65.53          4.33        1.4245   -8   0   2         2
                65.57          1.14        1.4238   -2   4   3         4
                65.74          4.21        1.4204    7   4   0         4
                65.79          5.25        1.4195    8   0   2         2
                67.41          3.28        1.3892    3   6   0         4
                67.97          1.11        1.3792   -5   3   3         4
                68.53          1.26        1.3692   -3   1   4         4
                68.55          1.14        1.3689   -4   5   2         4
                68.67         10.24        1.3668    6   5   0         4
                68.68          1.62        1.3667    4   5   2         4
                69.58          1.03        1.3511    3   6   1         4
                70.56          1.05        1.3347   -4   0   4         2
                70.71          1.02        1.3323   -4   4   3         4
                70.81          1.50        1.3307    4   0   4         2
                70.84          1.22        1.3301    6   5   1         4
                72.38          1.01        1.3056    0   5   3         4
                72.50          1.15        1.3037   -4   6   1         4
                72.64          1.33        1.3016   -6   3   3         4
                72.65          2.66        1.3014   -1   3   4         4
                72.71          1.24        1.3005    1   3   4         4
                72.91          2.20        1.2974    6   3   3         4
                73.51          2.15        1.2882   10   1   0         4
                73.74          1.16        1.2848   -9   1   2         4
                73.88          4.52        1.2828   -2   3   4         4
                73.98          2.56        1.2813   -8   3   2         4
                74.00          5.78        1.2810    2   3   4         4
                74.01          2.90        1.2808   -2   5   3         4
                74.10          2.88        1.2795    2   5   3         4
                74.22          1.56        1.2777    8   3   2         4
                74.25          1.79        1.2772   -4   2   4         4
                74.50          1.01        1.2737    4   2   4         4
                74.60          1.03        1.2722  -10   0   1         2
                74.91          1.06        1.2677   -9   3   1         4
                75.23          1.61        1.2630   -5   1   4         4
                76.25          5.16        1.2487   10   2   0         4
                76.32          1.28        1.2477    5   6   1         4
                77.32          1.31        1.2340    2   7   0         4
                78.77          1.37        1.2150    6   6   0         4
                79.01          1.61        1.2119   -1   4   4         4
                79.07          1.68        1.2111    1   4   4         4
                80.32          1.07        1.1954    2   4   4         4
                80.36          1.78        1.1949    8   5   0         4
                80.96          2.43        1.1875   -9   3   2         4
                81.23          2.56        1.1843    9   3   2         4
                82.20          1.54        1.1727   -3   4   4         4
                82.22          1.59        1.1725    4   7   0         4
                82.38          2.15        1.1706    3   4   4         4
                82.68          1.07        1.1671  -10   3   1         4
                82.83          1.28        1.1654   10   3   1         4
                85.88          1.16        1.1317   -3   6   3         4
                87.24          1.27        1.1174    6   5   3         4
                87.61          2.53        1.1137   -7   2   4         4
                88.02          2.32        1.1095    7   2   4         4
                88.61          1.75        1.1037  -10   3   2         4
                88.86          1.43        1.1013   -4   0   5         2
                88.91          1.83        1.1008   10   3   2         4
                89.15          1.83        1.0984    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.