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 = 150 K
      _database_code_amcsd 0007363

      CELL PARAMETERS:   13.0244   8.8006   5.8445   90.000   90.233   90.000
      SPACE GROUP: P2_1/a    
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    669.906
      Density (g/cm3):      4.051
      MAX. ABS. INTENSITY / VOLUME**2:      11.68654119    
      RIR:      0.939
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                12.14        100.00        7.2920    1   1   0         4
                13.60         31.11        6.5121    2   0   0         2
                18.22          8.96        4.8686    0   1   1         4
                19.44          8.44        4.5655   -1   1   1         4
                19.49          4.78        4.5554    1   1   1         4
                21.31          5.83        4.1688    1   2   0         4
                22.77          3.61        3.9057   -2   1   1         4
                22.84         23.67        3.8935    3   1   0         4
                22.84          3.25        3.8930    2   1   1         4
                26.24          3.47        3.3960   -1   2   1         4
                26.28          3.14        3.3918    1   2   1         4
                27.39         25.72        3.2561    4   0   0         2
                27.48          1.57        3.2457   -3   1   1         4
                27.57          3.27        3.2348    3   1   1         4
                28.89          9.65        3.0905    3   2   0         4
                30.59          6.55        2.9222    0   0   2         2
                31.25         35.24        2.8618    1   3   0         4
                31.40         48.67        2.8494   -4   0   1         2
                31.51         45.28        2.8395    4   0   1         2
                32.74         10.71        2.7353   -3   2   1         4
                32.82          9.76        2.7288    3   2   1         4
                33.00         48.55        2.7147   -1   1   2         4
                33.05         46.47        2.7104    1   1   2         4
                33.50         69.03        2.6747    2   3   0         4
                34.20          2.06        2.6218    0   3   1         4
                34.26         15.37        2.6174    4   2   0         4
                34.90          2.86        2.5711   -1   3   1         4
                34.92          3.93        2.5693    1   3   1         4
                35.12         12.82        2.5551   -2   1   2         4
                35.22         12.17        2.5480    2   1   2         4
                35.96          9.24        2.4977    5   1   0         4
                36.93         21.25        2.4343    0   2   2         4
                36.94         18.13        2.4336   -2   3   1         4
                36.98         16.05        2.4306    2   3   1         4
                37.61         13.92        2.3917   -4   2   1         4
                37.70         15.84        2.3859    4   2   1         4
                38.45         14.54        2.3413   -3   1   2         4
                38.59         17.23        2.3331    3   1   2         4
                39.28          1.02        2.2936    5   1   1         4
                40.15          1.06        2.2461   -3   3   1         4
                41.02          1.76        2.2002    0   4   0         2
                41.43         17.61        2.1792   -4   0   2         2
                41.60          2.13        2.1707    6   0   0         2
                41.61         16.73        2.1704    4   0   2         2
                41.63         21.70        2.1694    1   4   0         4
                42.51          5.67        2.1264   -3   2   2         4
                42.64          5.57        2.1202    3   2   2         4
                42.75         25.70        2.1153   -4   1   2         4
                42.92         23.76        2.1073    4   1   2         4
                43.41         12.06        2.0844    2   4   0         4
                46.22          5.05        1.9641   -2   4   1         4
                46.26         14.05        1.9625    3   4   0         4
                46.26          3.92        1.9625    2   4   1         4
                46.50          7.50        1.9529   -4   2   2         4
                46.63          1.53        1.9478    5   3   0         4
                46.66          1.54        1.9467    6   2   0         4
                46.66          7.81        1.9465    4   2   2         4
                47.81         13.91        1.9023   -5   1   2         4
                47.82          3.26        1.9021    0   1   3         4
                48.01         15.40        1.8950    5   1   2         4
                49.27          1.14        1.8496   -5   3   1         4
                49.28          2.17        1.8490   -6   2   1         4
                49.36          1.72        1.8462    5   3   1         4
                49.40          2.08        1.8449    6   2   1         4
                50.03          1.84        1.8230    4   4   0         4
                50.11          1.78        1.8204    7   1   0         4
                51.77          1.42        1.7658   -1   2   3         4
                52.03          1.09        1.7577    0   4   2         4
                52.41          1.23        1.7460   -6   0   2         2
                52.44          1.28        1.7448   -3   1   3         4
                52.52          5.74        1.7424   -1   4   2         4
                52.55          1.02        1.7414   -4   4   1         4
                52.56          4.96        1.7413    1   4   2         4
                52.61          1.60        1.7397    3   1   3         4
                52.63          1.25        1.7392    4   4   1         4
                53.47         16.80        1.7137    7   2   0         4
                53.96          1.49        1.6992    2   5   0         4
                54.44          1.38        1.6853    0   5   1         4
                54.81          5.01        1.6748   -4   0   3         2
                54.86          6.35        1.6735   -6   3   1         4
                54.97          5.29        1.6705    6   3   1         4
                55.03          4.47        1.6688    4   0   3         2
                56.38          6.41        1.6321   -2   5   1         4
                56.41          6.22        1.6311    2   5   1         4
                56.43          6.62        1.6306   -3   4   2         4
                56.53          1.75        1.6280    8   0   0         2
                56.53          6.44        1.6278    3   4   2         4
                56.72          9.47        1.6230   -5   3   2         4
                56.72          1.19        1.6229   -6   2   2         4
                56.89          8.72        1.6185    5   3   2         4
                56.93          1.27        1.6174    6   2   2         4
                57.18          1.58        1.6111   -1   3   3         4
                57.23          1.52        1.6098    1   3   3         4
                57.57          1.54        1.6009    8   1   0         4
                58.57          3.77        1.5760   -2   3   3         4
                58.67          3.59        1.5735    2   3   3         4
                59.01          2.76        1.5652   -4   2   3         4
                59.22          3.29        1.5603    4   2   3         4
                59.84          1.22        1.5456   -8   1   1         4
                59.85          2.04        1.5452    6   4   0         4
                60.65         17.71        1.5269    8   2   0         4
                61.84         17.16        1.5003   -6   3   2         4
                62.04         17.82        1.4960    6   3   2         4
                63.28         22.05        1.4696   -2   5   2         4
                63.35         22.46        1.4682    2   5   2         4
                63.42          2.09        1.4668    0   6   0         2
                63.69         24.69        1.4611    0   0   4         2
                63.86          3.82        1.4576    1   6   0         4
                63.97          1.07        1.4554    5   4   2         4
                65.35          6.96        1.4280    9   1   0         4
                65.52          4.76        1.4247   -8   0   2         2
                65.73          3.78        1.4207    7   4   0         4
                65.78          4.86        1.4198    8   0   2         2
                67.39          3.44        1.3896    3   6   0         4
                68.53          1.53        1.3693   -4   5   2         4
                68.65          9.63        1.3672    6   5   0         4
                68.65          1.41        1.3671    4   5   2         4
                70.73          1.11        1.3320   -6   5   1         4
                70.79          1.38        1.3310    4   0   4         2
                70.82          1.32        1.3305    6   5   1         4
                72.35          1.24        1.3060    0   5   3         4
                72.62          1.43        1.3019   -6   3   3         4
                72.63          2.08        1.3018   -1   3   4         4
                72.69          1.83        1.3009    1   3   4         4
                72.89          1.81        1.2977    6   3   3         4
                73.50          1.79        1.2884   10   1   0         4
                73.85          4.80        1.2832   -2   3   4         4
                73.96          2.02        1.2815   -8   3   2         4
                73.97          5.46        1.2814    2   3   4         4
                73.99          3.08        1.2812   -2   5   3         4
                74.08          2.76        1.2799    2   5   3         4
                74.21          2.02        1.2780    8   3   2         4
                74.23          1.36        1.2776   -4   2   4         4
                74.33          1.01        1.2761    7   4   2         4
                74.47          1.13        1.2740    4   2   4         4
                75.21          1.35        1.2633   -5   1   4         4
                75.51          1.03        1.2590    5   1   4         4
                76.24          5.08        1.2489   10   2   0         4
                77.29          1.48        1.2344    2   7   0         4
                78.74          1.30        1.2153    6   6   0         4
                78.98          1.37        1.2123   -1   4   4         4
                79.04          1.79        1.2115    1   4   4         4
                80.34          1.74        1.1952    8   5   0         4
                80.94          2.41        1.1877   -9   3   2         4
                81.21          2.57        1.1845    9   3   2         4
                82.18          1.56        1.1730   -3   4   4         4
                82.19          1.51        1.1728    4   7   0         4
                82.35          1.74        1.1709    3   4   4         4
                82.67          1.01        1.1673  -10   3   1         4
                82.81          1.18        1.1656   10   3   1         4
                86.95          1.18        1.1204   -6   5   3         4
                87.21          1.18        1.1177    6   5   3         4
                87.59          2.37        1.1139   -7   2   4         4
                88.00          2.34        1.1098    7   2   4         4
                88.60          1.62        1.1039  -10   3   2         4
                88.83          1.94        1.1016   -4   0   5         2
                88.89          1.68        1.1010   10   3   2         4
                89.12          1.69        1.0987    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.