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 = 30 min
      _database_code_amcsd 0003965

      CELL PARAMETERS:    9.7118   8.9442   5.2484   90.000  108.496   90.000
      SPACE GROUP: P2_1/c    
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    432.349
      Density (g/cm3):      3.547
      MAX. ABS. INTENSITY / VOLUME**2:      11.48006467    
      RIR:      1.054
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                13.80          2.39        6.4165    1   1   0         4
                19.27         10.73        4.6051    2   0   0         2
                20.02         11.44        4.4362   -1   1   1         4
                20.42          3.58        4.3492    0   1   1         4
                24.95          1.13        3.5693    1   1   1         4
                26.49          1.59        3.3650   -1   2   1         4
                26.80         16.18        3.3266    0   2   1         4
                27.81         51.99        3.2082    2   2   0         4
                29.61        100.00        3.0173   -2   2   1         4
                30.64         41.50        2.9180   -3   1   1         4
                30.79         46.06        2.9038    3   1   0         4
                34.84         46.27        2.5750   -1   3   1         4
                35.09          1.87        2.5577    0   3   1         4
                36.09         49.92        2.4886    0   0   2         2
                36.52         27.25        2.4603    2   2   1         4
                37.33          4.42        2.4088   -2   3   1         4
                38.02          3.14        2.3669    1   3   1         4
                40.39         14.27        2.2334    3   1   1         4
                40.43          3.51        2.2309    1   0   2         2
                40.68          2.45        2.2181   -2   2   2         4
                41.53          5.17        2.1746    0   2   2         4
                41.73          8.24        2.1646    1   1   2         4
                42.14         37.62        2.1445   -3   3   1         4
                42.25          3.07        2.1388    3   3   0         4
                42.76          7.76        2.1147   -4   2   1         4
                43.84          1.86        2.0650   -3   2   2         4
                44.24          3.65        2.0471    4   2   0         4
                44.32         15.28        2.0440   -4   0   2         2
                44.41         10.73        2.0397    0   4   1         4
                45.07          5.03        2.0115    2   4   0         4
                45.52          1.21        1.9926   -4   1   2         4
                46.28          3.93        1.9618   -2   4   1         4
                46.67         10.91        1.9463    2   0   2         2
                48.71          1.58        1.8695   -4   3   1         4
                50.00          3.09        1.8243    3   3   1         4
                50.59          3.62        1.8042    5   1   0         4
                51.14          1.88        1.7862    1   3   2         4
                51.19          9.71        1.7846    2   2   2         4
                51.29          1.93        1.7812    2   4   1         4
                52.08         11.30        1.7560    1   5   0         4
                52.94          2.91        1.7294    4   2   1         4
                53.94          2.05        1.6999   -1   1   3         4
                54.54          3.75        1.6825   -2   4   2         4
                54.88          4.02        1.6729   -3   1   3         4
                55.23          1.32        1.6633    0   4   2         4
                55.36          4.60        1.6595    3   1   2         4
                56.54         18.32        1.6278   -2   2   3         4
                56.62         25.68        1.6257   -5   3   1         4
                59.75          3.51        1.5477   -3   5   1         4
                59.84          5.13        1.5456    3   5   0         4
                59.93          6.72        1.5435   -6   0   2         2
                60.29          6.01        1.5350    6   0   0         2
                61.50          4.48        1.5077   -2   3   3         4
                61.98         14.47        1.4973   -1   3   3         4
                62.28         12.70        1.4907    0   6   0         2
                62.84          2.37        1.4787   -3   3   3         4
                62.90          1.16        1.4775   -1   5   2         4
                63.11          5.36        1.4731    4   0   2         2
                63.35          2.20        1.4681    2   4   2         4
                63.79          3.26        1.4590   -6   2   2         4
                64.11          1.61        1.4525    0   5   2         4
                65.84          5.32        1.4184   -3   5   2         4
                66.10          2.17        1.4135    3   5   1         4
                67.06          1.84        1.3956    1   5   2         4
                67.31         27.48        1.3911    5   3   1         4
                68.09          3.16        1.3770   -2   4   3         4
                68.22          4.95        1.3748    1   3   3         4
                68.55          1.33        1.3689   -7   1   1         4
                69.27          1.85        1.3565    2   2   3         4
                69.40          1.79        1.3541   -7   0   2         2
                70.31          6.54        1.3389   -7   1   2         4
                70.68          4.72        1.3329   -5   3   3         4
                70.70          1.41        1.3324    0   4   3         4
                72.32          2.08        1.3065   -3   0   4         2
                72.63          1.75        1.3017    7   1   0         4
                73.18          1.18        1.2934    6   2   1         4
                73.22          1.70        1.2928   -3   1   4         4
                73.79          1.22        1.2841    3   1   3         4
                73.84          1.72        1.2834    5   1   2         4
                74.15         10.39        1.2788    0   6   2         4
                74.26          4.31        1.2772   -4   0   4         2
                75.61          1.29        1.2576   -2   2   4         4
                76.06          1.19        1.2513    4   6   0         4
                76.57          2.23        1.2443    0   0   4         2
                77.37          1.53        1.2334   -3   5   3         4
                77.77          7.05        1.2280    3   5   2         4
                79.60          1.99        1.2044   -4   6   2         4
                81.30          1.61        1.1835    2   6   2         4
                82.22          1.16        1.1725    7   1   1         4
                82.68          1.01        1.1671   -8   2   1         4
                82.95          1.85        1.1640   -6   0   4         2
                84.08          1.58        1.1513    8   0   0         2
                89.61          1.47        1.0940   -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.