Pigeonite
      Domeneghetti M C, Zema M, Tazzoli V
      American Mineralogist 90 (2005) 1816-1823
      Kinetics of Fe2+-Mg order-disorder in P2_1/c pigeonite
      Locality: Parana, Brazil
      Sample: N.35, annealed at T = 700 C for t = 10 min
      _database_code_amcsd 0003963

      CELL PARAMETERS:    9.7093   8.9417   5.2479   90.000  108.507   90.000
      SPACE GROUP: P2_1/c    
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    432.048
      Density (g/cm3):      3.546
      MAX. ABS. INTENSITY / VOLUME**2:      11.42174346    
      RIR:      1.049
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                13.81          2.22        6.4145    1   1   0         4
                19.28         10.60        4.6036    2   0   0         2
                20.02         11.82        4.4356   -1   1   1         4
                20.42          3.57        4.3484    0   1   1         4
                24.95          1.22        3.5683    1   1   1         4
                26.49          1.57        3.3643   -1   2   1         4
                26.81         16.59        3.3258    0   2   1         4
                27.82         52.51        3.2073    2   2   0         4
                29.61        100.00        3.0167   -2   2   1         4
                30.64         41.99        2.9175   -3   1   1         4
                30.80         45.86        2.9028    3   1   0         4
                34.85         46.46        2.5744   -1   3   1         4
                35.09          1.85        2.5570    0   3   1         4
                36.10         50.00        2.4883    0   0   2         2
                36.53         27.28        2.4596    2   2   1         4
                37.34          4.39        2.4083   -2   3   1         4
                38.03          3.12        2.3663    1   3   1         4
                40.40         14.48        2.2326    3   1   1         4
                40.44          3.47        2.2304    1   0   2         2
                40.68          2.49        2.2178   -2   2   2         4
                41.53          5.25        2.1742    0   2   2         4
                41.74          8.23        2.1641    1   1   2         4
                42.15         37.70        2.1440   -3   3   1         4
                42.27          3.12        2.1382    3   3   0         4
                42.77          7.70        2.1142   -4   2   1         4
                43.85          1.85        2.0647   -3   2   2         4
                44.26          3.69        2.0465    4   2   0         4
                44.32         15.39        2.0437   -4   0   2         2
                44.43         10.92        2.0391    0   4   1         4
                45.09          5.14        2.0109    2   4   0         4
                45.53          1.20        1.9924   -4   1   2         4
                46.29          3.89        1.9613   -2   4   1         4
                46.68         10.89        1.9458    2   0   2         2
                48.72          1.57        1.8690   -4   3   1         4
                50.01          3.07        1.8237    3   3   1         4
                50.61          3.65        1.8036    5   1   0         4
                51.15          1.90        1.7858    1   3   2         4
                51.20          9.83        1.7842    2   2   2         4
                51.31          1.94        1.7806    2   4   1         4
                52.10         11.30        1.7555    1   5   0         4
                52.96          2.89        1.7288    4   2   1         4
                53.95          2.10        1.6997   -1   1   3         4
                54.55          3.82        1.6822   -2   4   2         4
                54.89          4.05        1.6728   -3   1   3         4
                55.24          1.30        1.6629    0   4   2         4
                55.38          4.57        1.6590    3   1   2         4
                56.54         18.35        1.6276   -2   2   3         4
                56.63         25.65        1.6253   -5   3   1         4
                59.76          3.55        1.5474   -3   5   1         4
                59.86          5.11        1.5452    3   5   0         4
                59.94          6.71        1.5432   -6   0   2         2
                60.32          5.99        1.5345    6   0   0         2
                61.51          4.45        1.5075   -2   3   3         4
                61.99         14.43        1.4970   -1   3   3         4
                62.30         12.72        1.4903    0   6   0         2
                62.85          2.38        1.4785   -3   3   3         4
                62.92          1.16        1.4772   -1   5   2         4
                63.13          5.36        1.4727    4   0   2         2
                63.37          2.23        1.4677    2   4   2         4
                63.81          3.30        1.4587   -6   2   2         4
                64.13          1.59        1.4522    0   5   2         4
                65.86          5.31        1.4181   -3   5   2         4
                66.12          2.21        1.4131    3   5   1         4
                67.08          1.83        1.3952    1   5   2         4
                67.34         27.53        1.3906    5   3   1         4
                68.11          3.16        1.3768   -2   4   3         4
                68.23          4.94        1.3745    1   3   3         4
                68.57          1.35        1.3686   -7   1   1         4
                69.29          1.84        1.3561    2   2   3         4
                69.42          1.78        1.3539   -7   0   2         2
                70.33          6.55        1.3386   -7   1   2         4
                70.69          4.73        1.3327   -5   3   3         4
                70.72          1.41        1.3321    0   4   3         4
                72.33          2.06        1.3064   -3   0   4         2
                72.66          1.75        1.3013    7   1   0         4
                73.20          1.17        1.2929    6   2   1         4
                73.22          1.71        1.2926   -3   1   4         4
                73.58          1.00        1.2872   -2   6   2         4
                73.81          1.23        1.2838    3   1   3         4
                73.86          1.75        1.2830    5   1   2         4
                74.17         10.42        1.2785    0   6   2         4
                74.26          4.32        1.2771   -4   0   4         2
                75.62          1.32        1.2575   -2   2   4         4
                76.09          1.19        1.2510    4   6   0         4
                76.58          2.25        1.2441    0   0   4         2
                77.38          1.53        1.2332   -3   5   3         4
                77.80          7.04        1.2277    3   5   2         4
                79.62          2.00        1.2041   -4   6   2         4
                81.32          1.60        1.1831    2   6   2         4
                82.25          1.17        1.1721    7   1   1         4
                82.96          1.85        1.1639   -6   0   4         2
                84.11          1.58        1.1509    8   0   0         2
                89.63          1.46        1.0938   -8   2   3         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.