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.13, untreated
      _database_code_amcsd 0003978

      CELL PARAMETERS:    9.7060   8.9400   5.2460   90.000  108.504   90.000
      SPACE GROUP: P2_1/c    
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    431.671
      Density (g/cm3):      3.551
      MAX. ABS. INTENSITY / VOLUME**2:      11.35677753    
      RIR:      1.041
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                13.81          2.09        6.4129    1   1   0         4
                19.29         10.85        4.6021    2   0   0         2
                20.02         12.46        4.4342   -1   1   1         4
                20.43          3.75        4.3471    0   1   1         4
                24.96          1.36        3.5672    1   1   1         4
                26.50          1.61        3.3634   -1   2   1         4
                26.81         16.75        3.3250    0   2   1         4
                27.82         53.60        3.2065    2   2   0         4
                29.62        100.00        3.0159   -2   2   1         4
                30.65         42.78        2.9165   -3   1   1         4
                30.81         46.00        2.9019    3   1   0         4
                34.86         46.75        2.5738   -1   3   1         4
                35.10          1.90        2.5564    0   3   1         4
                36.11         50.43        2.4874    0   0   2         2
                36.54         27.17        2.4589    2   2   1         4
                37.35          4.56        2.4077   -2   3   1         4
                38.04          3.17        2.3657    1   3   1         4
                40.41         14.81        2.2319    3   1   1         4
                40.46          3.62        2.2296    1   0   2         2
                40.70          2.58        2.2171   -2   2   2         4
                41.55          5.33        2.1735    0   2   2         4
                41.75          8.16        2.1634    1   1   2         4
                42.16         38.08        2.1434   -3   3   1         4
                42.28          3.14        2.1376    3   3   0         4
                42.79          7.65        2.1135   -4   2   1         4
                43.86          1.96        2.0640   -3   2   2         4
                44.27          3.83        2.0459    4   2   0         4
                44.34         15.34        2.0430   -4   0   2         2
                44.44         11.05        2.0387    0   4   1         4
                45.10          5.32        2.0105    2   4   0         4
                45.55          1.24        1.9916   -4   1   2         4
                46.30          3.89        1.9608   -2   4   1         4
                46.70         10.96        1.9452    2   0   2         2
                48.73          1.63        1.8685   -4   3   1         4
                50.03          3.10        1.8232    3   3   1         4
                50.63          3.72        1.8030    5   1   0         4
                51.17          1.92        1.7853    1   3   2         4
                51.22         10.04        1.7836    2   2   2         4
                51.32          1.90        1.7802    2   4   1         4
                52.11         11.30        1.7552    1   5   0         4
                52.98          2.87        1.7283    4   2   1         4
                53.97          2.16        1.6991   -1   1   3         4
                54.57          3.91        1.6817   -2   4   2         4
                54.91          4.13        1.6721   -3   1   3         4
                55.25          1.23        1.6625    0   4   2         4
                55.40          4.62        1.6585    3   1   2         4
                56.56         18.32        1.6270   -2   2   3         4
                56.65         25.88        1.6248   -5   3   1         4
                59.78          3.62        1.5470   -3   5   1         4
                59.87          5.15        1.5448    3   5   0         4
                59.97          6.74        1.5426   -6   0   2         2
                60.34          6.03        1.5340    6   0   0         2
                61.53          4.62        1.5070   -2   3   3         4
                62.01         14.51        1.4966   -1   3   3         4
                62.32         12.87        1.4900    0   6   0         2
                62.88          2.37        1.4781   -3   3   3         4
                62.93          1.17        1.4768   -1   5   2         4
                63.15          5.39        1.4722    4   0   2         2
                63.39          2.29        1.4673    2   4   2         4
                63.83          3.33        1.4582   -6   2   2         4
                64.15          1.65        1.4518    0   5   2         4
                65.88          5.29        1.4178   -3   5   2         4
                66.14          2.25        1.4128    3   5   1         4
                67.10          1.82        1.3949    1   5   2         4
                67.36         27.74        1.3902    5   3   1         4
                68.13          3.18        1.3763   -2   4   3         4
                68.26          5.01        1.3741    1   3   3         4
                68.60          1.37        1.3681   -7   1   1         4
                69.31          1.82        1.3557    2   2   3         4
                69.45          1.85        1.3534   -7   0   2         2
                70.35          6.53        1.3382   -7   1   2         4
                70.71          4.71        1.3322   -5   3   3         4
                70.74          1.45        1.3317    0   4   3         4
                72.36          2.13        1.3059   -3   0   4         2
                72.68          1.73        1.3009    7   1   0         4
                73.23          1.16        1.2925    6   2   1         4
                73.25          1.66        1.2922   -3   1   4         4
                73.60          1.01        1.2869   -2   6   2         4
                73.84          1.26        1.2834    3   1   3         4
                73.89          1.78        1.2826    5   1   2         4
                74.19         10.46        1.2782    0   6   2         4
                74.29          4.32        1.2766   -4   0   4         2
                75.66          1.31        1.2570   -2   2   4         4
                76.11          1.20        1.2507    4   6   0         4
                76.61          2.21        1.2437    0   0   4         2
                77.41          1.57        1.2328   -3   5   3         4
                77.82          7.05        1.2274    3   5   2         4
                79.64          2.03        1.2038   -4   6   2         4
                81.32          1.02        1.1831   -5   2   4         4
                81.35          1.64        1.1829    2   6   2         4
                82.28          1.19        1.1717    7   1   1         4
                83.00          1.82        1.1635   -6   0   4         2
                84.14          1.59        1.1505    8   0   0         2
                89.67          1.45        1.0934   -8   2   3         4
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.