Phengite
      Pavese A, Ferraris G, Pischedda V, Ibberson R
      European Journal of Mineralogy 11 (1999) 309-320
      Tetrahedral order in phengite 2M_1 upon heating, from powder
      neutron diffraction, and thermodynamic consequences
      Sample: T = 873 K
      _database_code_amcsd 0006769

      CELL PARAMETERS:    5.2390   9.1048  20.2440   90.000   95.684   90.000
      SPACE GROUP: C2/c      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    960.890
      Density (g/cm3):      2.821
      MAX. ABS. INTENSITY / VOLUME**2:      5.651222816    
      RIR:      0.652
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                 8.78        100.00       10.0722    0   0   2         2
                17.61         12.29        5.0361    0   0   4         2
                19.50          3.77        4.5524    0   2   0         2
                19.62         20.00        4.5241    1   1   0         4
                19.74         67.11        4.4976   -1   1   1         4
                20.00          9.69        4.4404    0   2   1         4
                20.49         11.13        4.3352    1   1   1         4
                21.42         15.78        4.1484    0   2   2         4
                22.22          5.24        4.0004    1   1   2         4
                22.74         34.91        3.9110   -1   1   3         4
                23.61         31.34        3.7681    0   2   3         4
                24.65          1.41        3.6109    1   1   3         4
                25.31         52.42        3.5193   -1   1   4         4
                26.39         47.23        3.3771    0   2   4         4
                26.55         42.38        3.3574    0   0   6         2
                27.61         43.29        3.2303    1   1   4         4
                28.37          3.83        3.1461   -1   1   5         4
                29.61         49.08        3.0170    0   2   5         4
                30.96         32.07        2.8880    1   1   5         4
                31.80         20.52        2.8143   -1   1   6         4
                34.19          1.76        2.6229    1   3   0         4
                34.26         22.91        2.6177   -1   3   1         4
                34.41         12.11        2.6066    2   0   0         2
                34.61          6.86        2.5916    1   1   6         4
                34.68         26.66        2.5864   -2   0   2         2
                34.71         51.63        2.5845    1   3   1         4
                35.50          5.34        2.5286   -1   1   7         4
                35.66          7.07        2.5181    0   0   8         2
                36.14          5.50        2.4854   -1   3   3         4
                36.45          3.02        2.4650    2   0   2         2
                37.24         16.24        2.4146   -2   0   4         2
                37.43         36.96        2.4028    1   3   3         4
                39.71          5.53        2.2697   -2   2   1         4
                39.85          1.43        2.2621    2   2   0         4
                39.86          4.84        2.2618    0   4   1         4
                40.08          4.63        2.2500   -1   3   5         4
                40.51          5.08        2.2268    2   2   1         4
                40.51          1.72        2.2266    2   0   4         2
                40.64          2.24        2.2202    0   4   2         4
                40.99          6.05        2.2017   -2   2   3         4
                41.67          4.03        2.1676    2   2   2         4
                41.71          9.38        2.1654   -2   0   6         2
                41.91          2.65        2.1557    0   4   3         4
                42.03         22.09        2.1497    1   3   5         4
                43.29          3.45        2.0900    2   2   3         4
                43.64          3.98        2.0742    0   4   4         4
                44.20          1.10        2.0490   -2   2   5         4
                45.00         14.36        2.0144    0   0  10         2
                45.62         11.85        1.9885   -1   3   7         4
                46.16          6.40        1.9667    2   0   6         2
                46.44          1.77        1.9555   -2   2   6         4
                48.31          2.53        1.8840    0   4   6         4
                49.48          1.05        1.8422    0   2  10         4
                51.17          1.24        1.7853    0   4   7         4
                51.97          2.35        1.7596   -2   2   8         4
                52.40          4.82        1.7461   -1   3   9         4
                53.01          1.59        1.7276    2   0   8         2
                53.29          1.42        1.7191    1   5   0         4
                53.44          2.44        1.7145    2   4   0         4
                53.64          1.35        1.7085    2   2   7         4
                53.66          1.23        1.7082    1   5   1         4
                54.14          1.99        1.6941   -3   1   3         4
                54.76         11.67        1.6763   -2   0  10         2
                54.90          3.59        1.6723    2   4   2         4
                55.19          1.01        1.6642   -2   2   9         4
                55.27         22.27        1.6622    1   3   9         4
                55.47          1.90        1.6566    3   1   2         4
                55.48          1.31        1.6563   -2   4   4         4
                55.95          5.26        1.6434   -1   5   4         4
                56.23          1.87        1.6359    2   4   3         4
                56.47          5.48        1.6297   -3   1   5         4
                56.94          2.00        1.6172    3   1   3         4
                56.99          2.82        1.6160   -2   4   5         4
                57.02          1.96        1.6152    2   2   8         4
                57.18          3.42        1.6109    1   5   4         4
                58.20          2.16        1.5851   -3   1   6         4
                58.69          1.21        1.5730   -2   2  10         4
                58.78          3.69        1.5708    3   1   4         4
                58.86          1.98        1.5689   -2   4   6         4
                59.11          1.80        1.5629    1   5   5         4
                59.62          2.05        1.5509   -1   5   6         4
                60.00          1.22        1.5418    2   4   5         4
                60.17          7.85        1.5379   -1   3  11         4
                60.84          3.18        1.5226    2   0  10         2
                61.07          9.54        1.5175    0   6   0         2
                61.24         19.63        1.5135   -3   3   1         4
                61.39          1.30        1.5103    1   5   6         4
                61.83          1.59        1.5005    0   6   2         4
                61.89          1.09        1.4992   -3   3   3         4
                62.12          2.25        1.4943    3   3   1         4
                62.40          1.16        1.4882    2   4   6         4
                62.80          1.26        1.4796   -2   0  12         2
                63.38          2.82        1.4676    1   3  11         4
                63.41          1.95        1.4669    0   2  13         4
                64.54          1.96        1.4440    2   2  10         4
                64.79          1.07        1.4389    0   0  14         2
                65.31          1.18        1.4288    1   1  13         4
                68.66          2.59        1.3670    2   2  11         4
                68.82         11.01        1.3642   -1   3  13         4
                69.55          5.36        1.3517    2   0  12         2
                69.59          3.32        1.3510    0   4  12         4
                70.67          2.37        1.3329   -2   2  13         4
                72.01          3.24        1.3114    2   6   0         4
                72.15          2.09        1.3091   -4   0   2         2
                72.17          6.23        1.3088   -2   6   2         4
                72.51          3.92        1.3037   -3   3   9         4
                72.53          2.91        1.3033    4   0   0         2
                72.76          3.44        1.2997    0   6   8         4
                73.34          4.36        1.2909    3   3   7         4
                73.74          3.49        1.2848   -2   6   4         4
                74.00          1.49        1.2809    0   4  13         4
                74.30          2.25        1.2765    4   0   2         2
                75.15          1.52        1.2643   -2   2  14         4
                75.35          1.74        1.2614   -1   7   1         4
                75.51          1.81        1.2590    0   0  16         2
                75.61          1.76        1.2577   -4   0   6         2
                75.87          2.65        1.2540    2   6   4         4
                76.01          1.03        1.2520   -3   5   3         4
                77.61          1.28        1.2301   -4   2   5         4
                77.62          1.15        1.2300    2   2  13         4
                79.47          1.01        1.2061   -3   5   6         4
                79.97          1.24        1.1997    3   5   4         4
                80.58          1.10        1.1921    3   1  11         4
                85.16          1.19        1.1393   -2   4  14         4
                86.51          3.92        1.1250   -2   6  10         4
                87.65          1.93        1.1133    4   0   8         2
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.