Anorthite
      Wenk H R, Joswig W, Tagai T, Korekawa M, Smith B K
      American Mineralogist 65 (1980) 81-95
      The average structure of An 62-66 labradorite
      Note: studied with X-rays
      Locality: Surtsey, Iceland
      _database_code_amcsd 0019662

      CELL PARAMETERS:    8.1736  12.8736   7.1022   93.462  116.054   90.475
      SPACE GROUP: C-1       
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    669.647
      Density (g/cm3):      2.697
      MAX. ABS. INTENSITY / VOLUME**2:      4.606119610    
      RIR:      0.556
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                13.67          8.51        6.4800   -1   1   0         2
                15.23          1.46        5.8182   -1  -1   1         2
                18.92          8.02        4.6901    0  -2   1         2
                22.00         78.58        4.0406   -2   0   1         2
                22.78         17.17        3.9035    1  -1   1         2
                23.66         40.45        3.7612   -1   3   0         2
                23.67         25.87        3.7592    1   1   1         2
                24.48         34.90        3.6362    1   3   0         2
                24.58         13.52        3.6221   -1  -3   1         2
                25.47          1.37        3.4976   -1   3   1         2
                25.66         13.34        3.4711   -1  -1   2         2
                26.03          5.14        3.4236   -2  -2   1         2
                26.49         25.43        3.3648   -1   1   2         2
                27.53         54.38        3.2400   -2   2   0         2
                27.79         59.79        3.2101    0   4   0         2
                27.87         95.41        3.2012   -2   0   2         2
                28.04        100.00        3.1821    0   0   2         2
                28.49         43.09        3.1334    2   2   0         2
                29.49         23.64        3.0287    1  -3   1         2
                30.28         27.07        2.9520    0  -4   1         2
                30.45         17.62        2.9356    0  -2   2         2
                30.73         10.77        2.9091   -2  -2   2         2
                31.56         24.50        2.8350    1   3   1         2
                31.79          8.69        2.8151   -1  -3   2         2
                33.80         14.60        2.6521   -1   3   2         2
                35.24          3.29        2.5466    2  -2   1         2
                35.55          5.13        2.5252    1  -1   2         2
                35.66          4.08        2.5176   -3  -1   2         2
                35.68         30.50        2.5165   -2  -4   1         2
                35.77         20.11        2.5104   -2   4   1         2
                35.90          1.49        2.5016   -3   1   2         2
                36.47          2.22        2.4637   -2   4   0         2
                36.81          3.62        2.4414    2   2   1         2
                37.15          4.28        2.4200   -3   1   0         2
                37.23          4.74        2.4153   -1  -5   1         2
                37.71          3.24        2.3857    3   1   0         2
                37.95          3.74        2.3707    2   4   0         2
                38.25          3.31        2.3529   -1   5   1         2
                39.02          5.89        2.3084   -3   3   1         2
                39.49          6.39        2.2820   -3  -3   1         2
                39.77          3.17        2.2666   -1   1   3         2
                39.99          1.73        2.2547    1  -3   2         2
                40.43          4.47        2.2310    1  -5   1         2
                40.54          2.55        2.2250   -2   4   2         2
                41.35          1.64        2.1835    0   4   2         2
                41.82          1.47        2.1600   -3   3   0         2
                41.86          2.34        2.1581   -2   2   3         2
                42.18          1.17        2.1423   -1  -5   2         2
                42.23          9.72        2.1401    0   6   0         2
                42.42         13.69        2.1311    2  -4   1         2
                43.06          8.99        2.1007    1   5   1         2
                43.24          1.93        2.0925   -3   1   3         2
                43.31          1.46        2.0889    3   3   0         2
                44.82          1.30        2.0222   -1   5   2         2
                44.86          2.55        2.0203   -4   0   2         2
                45.00          3.40        2.0145   -4   0   1         2
                45.20          1.04        2.0059    2   0   2         2
                45.37          1.74        1.9988    3  -1   1         2
                45.53          2.22        1.9921   -1   3   3         2
                45.68          4.78        1.9861    0   6   1         2
                46.18          1.73        1.9659    3   1   1         2
                46.53          3.14        1.9518    2  -2   2         2
                46.84          1.07        1.9394   -3  -3   3         2
                47.12          3.32        1.9285   -4  -2   2         2
                47.20         10.29        1.9258   -4   2   2         2
                48.40          5.17        1.8806   -2   6   0         2
                48.43          7.76        1.8796    2   2   2         2
                48.45          1.12        1.8790   -3   5   1         2
                49.09          1.47        1.8557    3  -3   1         2
                49.33         11.22        1.8475   -4   0   3         2
                49.48          1.22        1.8422   -2   4   3         2
                49.61          3.58        1.8375    0  -6   2         2
                49.70         14.36        1.8344    4   0   0         2
                49.72          2.91        1.8337    1  -1   3         2
                49.80          2.50        1.8309    0  -4   3         2
                50.18          5.16        1.8181    2   6   0         2
                50.39          3.45        1.8111   -2  -6   2         2
                50.79          9.17        1.7975    1   1   3         2
                50.84          2.51        1.7961   -1   7   0         2
                51.29          1.15        1.7813   -1  -7   1         2
                51.34          1.17        1.7798    3   3   1         2
                51.57         23.40        1.7723   -2   0   4         2
                52.14          6.01        1.7541    2  -4   2         2
                52.31          1.88        1.7488   -2   6   2         2
                52.40          1.51        1.7460   -1   7   1         2
                52.40          1.45        1.7460    4   2   0         2
                52.42          1.61        1.7454    1   5   2         2
                52.74          3.33        1.7356   -2  -2   4         2
                52.90          1.35        1.7309    1  -3   3         2
                52.98          1.17        1.7285    2  -6   1         2
                53.19          3.33        1.7220   -4   4   1         2
                53.26          3.03        1.7200    0   6   2         2
                53.44          2.08        1.7145    0   4   3         2
                53.53          6.13        1.7118   -4  -4   2         2
                53.66          3.61        1.7079   -4   4   2         2
                54.24          1.78        1.6911   -4  -4   1         2
                54.55          3.94        1.6824   -2   2   4         2
                54.89          1.44        1.6728   -3  -5   3         2
                55.61          3.50        1.6527    2   4   2         2
                56.28          1.13        1.6346   -1  -3   4         2
                56.49          1.50        1.6290   -3  -3   4         2
                56.67          1.60        1.6243    3  -5   1         2
                56.93          1.25        1.6174   -4  -4   3         2
                57.15          4.25        1.6117   -3   5   3         2
                57.41          2.32        1.6051    0   8   0         2
                58.15          1.19        1.5864    4   0   1         2
                58.23          1.61        1.5843   -5   1   1         2
                58.27          1.39        1.5833    0  -8   1         2
                58.79          2.38        1.5707    0  -2   4         2
                58.94          1.72        1.5670   -4  -2   4         2
                59.62          1.31        1.5507    3  -3   2         2
                59.96          1.35        1.5427    2  -2   3         2
                60.04          3.20        1.5409    3   5   1         2
                60.10          2.17        1.5395   -4   2   4         2
                60.11          1.17        1.5392    1  -7   2         2
                60.80          1.08        1.5234   -5  -3   2         2
                60.99          1.19        1.5193    0   2   4         2
                61.20          1.65        1.5144    2  -6   2         2
                61.26          1.95        1.5132   -2   4   4         2
                62.18          5.34        1.4930   -2  -8   1         2
                62.23          5.90        1.4919   -2   8   0         2
                62.41          1.26        1.4881    3   3   2         2
                62.65          4.11        1.4828   -5  -3   3         2
                62.70          5.70        1.4818   -4   6   1         2
                62.77          1.14        1.4802   -5  -3   1         2
                62.97          1.54        1.4760    0  -8   2         2
                63.16          2.47        1.4721   -5   3   3         2
                63.22          1.01        1.4709   -4  -6   2         2
                63.39          4.15        1.4673   -4   6   2         2
                63.96          6.12        1.4556    0   6   3         2
                64.24          3.76        1.4500    2   8   0         2
                64.51          3.68        1.4445    2  -4   3         2
                64.69          1.02        1.4409    3   7   0         2
                65.39          2.09        1.4272   -5   1   4         2
                65.75          1.44        1.4203   -4   6   0         2
                65.87          1.02        1.4179   -3  -7   3         2
                65.89          3.92        1.4175    2   6   2         2
                65.90          1.58        1.4174    2  -8   1         2
                66.28          1.76        1.4101    1   1   4         2
                67.15          2.54        1.3941    4   4   1         2
                67.35          3.59        1.3904    1   9   0         2
                67.57          5.82        1.3864    1  -3   4         2
                67.76          2.89        1.3828   -4   6   3         2
                68.14          3.87        1.3762   -5  -3   4         2
                68.30          3.27        1.3732    1  -9   1         2
                68.38          1.18        1.3719    5   3   0         2
                68.60          2.72        1.3681    2   4   3         2
                68.67          2.24        1.3668    4   6   0         2
                68.80          4.14        1.3645   -4   0   5         2
                69.09          7.25        1.3596   -6   0   2         2
                69.52          6.98        1.3522    4   0   2         2
                69.52          5.06        1.3522   -1  -9   2         2
                69.78          2.07        1.3478   -4  -2   5         2
                69.89          1.93        1.3459    2   8   1         2
                70.14          3.33        1.3418   -1   1   5         2
                70.29          1.20        1.3392    4  -2   2         2
                70.52          1.89        1.3354   -5   5   3         2
                71.06          1.46        1.3266   -6  -2   2         2
                71.08          1.63        1.3263    0  -8   3         2
                71.30          1.28        1.3228    0  -6   4         2
                71.36          2.85        1.3218   -1  -3   5         2
                71.40          1.24        1.3211    3   1   3         2
                71.62          1.13        1.3175   -6   2   3         2
                72.38          1.09        1.3057   -4  -6   4         2
                72.97          1.78        1.2966   -1   9   2         2
                73.02          3.21        1.2958    2  -8   2         2
                74.10          1.05        1.2795   -6   0   4         2
                74.52          1.20        1.2733    4  -4   2         2
                74.75          1.40        1.2700   -3   9   1         2
                74.77          1.60        1.2697    2   0   4         2
                74.90          1.35        1.2678   -4   8   1         2
                75.03          1.08        1.2659    0  -2   5         2
                75.57          4.15        1.2583   -4  -8   2         2
                75.61          2.21        1.2577   -6   4   2         2
                75.78          3.34        1.2552   -4   8   2         2
                76.66          2.48        1.2431   -6  -4   3         2
                76.90          1.48        1.2397   -5  -3   5         2
                77.01          1.07        1.2382    0   8   3         2
                77.26          2.05        1.2348   -4   4   5         2
                77.86          1.04        1.2268   -6   4   1         2
                78.16          3.84        1.2229    6   0   0         2
                78.33          1.34        1.2207    4   4   2         2
                78.79          4.38        1.2147    2   8   2         2
                79.24          1.99        1.2089   -3   5   5         2
                80.53          1.27        1.1928    6   2   0         2
                81.91          1.20        1.1762   -4  -6   5         2
                82.51          1.58        1.1691    1  -7   4         2
                82.57          1.15        1.1683   -1   5   5         2
                82.79          2.06        1.1659   -3   9   3         2
                83.49          2.75        1.1578   -6   4   0         2
                83.72          2.36        1.1552    3   5   3         2
                84.40          1.35        1.1477   -5  -7   4         2
                84.70          2.32        1.1443   -2   6   5         2
                85.41          1.36        1.1366   -1  -9   4         2
                86.11          1.46        1.1293   -1 -11   2         2
                86.20          2.18        1.1283    6   4   0         2
                86.27          1.46        1.1276   -3  -9   4         2
                89.53          1.02        1.0947   -2  -8   5         2
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.