Perrierite-(La)
      Calvo C, Faggiani R
      American Mineralogist 59 (1974) 1277-1285
      A re-investigation of the crystal structures of chevkinite and perrierite
      Locality: synthetic
      _database_code_amcsd 0000435

      CELL PARAMETERS:   13.8180   5.6770  11.7870   90.000  113.850   90.000
      SPACE GROUP: P2_1/a    
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    845.672
      Density (g/cm3):      4.760
      MAX. ABS. INTENSITY / VOLUME**2:      32.66170351    
      RIR:      2.234
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                 8.20          9.87       10.7805    0   0   1         2
                13.06          1.82        6.7764   -2   0   1         2
                16.45         42.55        5.3902    0   0   2         2
                17.12         35.20        5.1785    1   1   0         4
                17.73          9.16        5.0026   -1   1   1         4
                18.93          1.49        4.6871    2   0   1         2
                20.22         13.96        4.3925    1   1   1         4
                20.41          2.18        4.3517   -2   1   1         4
                21.74         15.86        4.0881   -1   1   2         4
                22.98          1.05        3.8706   -2   1   2         4
                23.00          2.05        3.8671   -2   0   3         2
                24.63          2.43        3.6144    2   1   1         4
                24.78         15.05        3.5935    0   0   3         2
                24.90         46.80        3.5766   -3   1   1         4
                25.76         15.80        3.4590    1   1   2         4
                26.16          2.89        3.4064   -3   1   2         4
                26.30          1.25        3.3882   -4   0   2         2
                27.77          7.21        3.2121   -1   1   3         4
                27.92          1.01        3.1960   -2   1   3         4
                28.25         18.92        3.1595    4   0   0         2
                29.13         30.43        3.0659   -4   0   3         2
                29.82         78.97        2.9961   -3   1   3         4
                30.15        100.00        2.9645    3   1   1         4
                30.34          1.62        2.9459   -2   0   4         2
                31.52         39.01        2.8385    0   2   0         2
                32.60         11.22        2.7470    4   0   1         2
                32.60          3.65        2.7468    1   1   3         4
                32.62          3.04        2.7449    0   2   1         4
                33.24         34.76        2.6951    0   0   4         2
                33.88          5.48        2.6456   -4   0   4         2
                34.25          2.35        2.6181   -2   2   1         4
                34.64          3.49        2.5893    2   2   0         4
                34.89         17.49        2.5716   -1   1   4         4
                35.62          3.95        2.5205    3   1   2         4
                35.75         22.02        2.5115    0   2   2         4
                35.90          5.33        2.5013   -2   2   2         4
                36.22          6.00        2.4798   -5   1   2         4
                38.41          8.62        2.3435    4   0   2         2
                39.12          4.62        2.3027   -6   0   2         2
                39.97         10.60        2.2555   -4   0   5         2
                40.16          2.86        2.2451   -6   0   1         2
                40.50          8.14        2.2274    0   2   3         4
                41.02          2.62        2.2005   -5   1   4         4
                41.29         22.08        2.1866   -4   2   1         4
                41.50         16.47        2.1759   -4   2   2         4
                41.73         20.49        2.1644   -3   1   5         4
                42.22         14.55        2.1406    3   1   3         4
                42.36          1.26        2.1339   -6   1   2         4
                42.46          6.26        2.1290   -6   0   4         2
                42.67          2.25        2.1189   -1   1   5         4
                42.83          6.94        2.1115    4   2   0         4
                42.94          5.12        2.1063    6   0   0         2
                43.45         10.08        2.0829   -4   2   3         4
                44.32          1.11        2.0440   -2   2   4         4
                44.80          1.18        2.0232   -1   2   4         4
                45.89          1.58        1.9776   -5   2   2         4
                45.98          3.27        1.9740    4   2   1         4
                46.46         29.60        1.9545    0   2   4         4
                46.50          6.06        1.9529    2   2   3         4
                46.95          2.35        1.9353   -4   2   4         4
                48.21          1.28        1.8877    5   2   0         4
                48.27          2.45        1.8854    5   1   2         4
                48.34          1.03        1.8828    1   1   5         4
                48.65          1.23        1.8715    1   3   0         4
                48.98          9.82        1.8597   -7   1   2         4
                49.08          1.07        1.8560   -3   1   6         4
                49.11          8.08        1.8550   -7   1   3         4
                49.62          5.02        1.8372    3   1   4         4
                49.91          2.18        1.8272    2   0   5         2
                49.96          1.46        1.8256    1   3   1         4
                50.05          2.80        1.8226   -2   3   1         4
                50.39          6.65        1.8111   -7   1   1         4
                50.39          5.00        1.8110   -2   2   5         4
                50.50          4.13        1.8072    4   2   2         4
                50.67          2.28        1.8017   -1   3   2         4
                50.78          4.22        1.7981   -7   1   4         4
                50.82          2.28        1.7967    0   0   6         2
                50.96          5.85        1.7919   -1   1   6         4
                51.07          3.39        1.7883   -6   2   2         4
                51.64          4.86        1.7699   -5   1   6         4
                51.72          2.53        1.7675   -6   2   3         4
                51.77          3.57        1.7659   -4   2   5         4
                51.84          2.76        1.7637   -6   0   6         2
                51.93          5.93        1.7609   -6   2   1         4
                52.12          2.31        1.7547    2   3   1         4
                52.26          5.14        1.7503   -3   3   1         4
                52.66          6.20        1.7380    6   0   2         2
                52.73          2.00        1.7360    1   3   2         4
                52.81          5.90        1.7334    4   0   4         2
                52.94          1.42        1.7295    2   2   4         4
                53.06          8.45        1.7260   -8   0   3         2
                53.36          2.05        1.7169    0   2   5         4
                53.44          1.83        1.7146   -8   0   2         2
                53.83          7.34        1.7032   -6   2   4         4
                53.86          1.07        1.7021   -1   3   3         4
                53.86          1.59        1.7021   -7   1   5         4
                53.94          1.03        1.6997   -2   3   3         4
                54.23          4.62        1.6915    6   2   0         4
                54.74          5.48        1.6770   -4   0   7         2
                55.07         10.78        1.6675   -3   3   3         4
                55.25          2.54        1.6625   -8   0   1         2
                55.27         12.10        1.6620    3   3   1         4
                56.17          1.61        1.6375    4   2   3         4
                56.62          1.59        1.6257   -8   0   5         2
                56.96          2.45        1.6166    1   1   6         4
                57.10          4.63        1.6130   -3   1   7         4
                57.28          1.33        1.6084   -6   2   5         4
                57.39          7.96        1.6055    7   1   1         4
                57.68         10.91        1.5982    3   1   5         4
                57.69          1.37        1.5980   -4   2   6         4
                58.22          4.89        1.5845   -7   1   6         4
                58.32          2.50        1.5822   -1   3   4         4
                58.48          3.10        1.5783   -5   1   7         4
                59.23          1.34        1.5601   -5   3   2         4
                59.74          1.11        1.5479    2   3   3         4
                60.08          3.56        1.5401    0   0   7         2
                60.38          1.34        1.5329   -8   0   6         2
                61.03          4.70        1.5182    0   2   6         4
                62.69          1.56        1.4820    7   1   2         4
                62.80          1.49        1.4796    8   0   1         2
                62.81          1.86        1.4794    4   2   4         4
                63.03          1.24        1.4747   -8   2   3         4
                63.18          4.76        1.4717   -3   3   5         4
                63.54          3.80        1.4642    3   3   3         4
                63.70          1.89        1.4608   -7   1   7         4
                64.55          2.60        1.4438   -4   2   7         4
                65.01          3.61        1.4345   -8   2   1         4
                65.14          2.29        1.4320   -2   2   7         4
                65.31          1.97        1.4287   -8   0   7         2
                65.80          9.78        1.4193    0   4   0         2
                66.25          3.79        1.4107   -8   2   5         4
                66.36          1.77        1.4086    3   1   6         4
                67.68          1.13        1.3843   -6   2   7         4
                68.35          1.11        1.3725    0   4   2         4
                68.56          3.77        1.3687    6   2   3         4
                68.82          2.72        1.3642   -7   3   2         4
                68.88          1.32        1.3631    9   1   0         4
                68.93          1.83        1.3623   -7   3   3         4
                69.01          1.78        1.3610    7   1   3         4
                69.05          3.46        1.3602   -1   1   8         4
                69.15          1.22        1.3586  -10   0   2         2
                69.34          1.34        1.3552    3   3   4         4
                69.43          1.29        1.3537    0   2   7         4
                69.72          2.77        1.3488   -8   2   6         4
                69.79          3.27        1.3476    0   0   8         2
                69.97          2.22        1.3446   -7   3   1         4
                70.18          2.37        1.3410   -7   1   8         4
                70.29          1.12        1.3393   -7   3   4         4
                70.44          1.39        1.3367   -1   3   6         4
                71.01          1.92        1.3275   -5   3   6         4
                71.89          1.13        1.3134  -10   0   6         2
                71.97          2.04        1.3120    8   2   1         4
                73.09          1.61        1.2946    4   4   0         4
                73.53          2.56        1.2879   -4   4   3         4
                74.33          1.87        1.2761   -8   2   7         4
                74.42          4.70        1.2749   -6   2   8         4
                75.04          2.74        1.2658   -3   1   9         4
                75.38          1.08        1.2609    4   4   1         4
                75.43          3.46        1.2602    6   2   4         4
                75.64          1.42        1.2573   -3   3   7         4
                75.71          1.55        1.2563    3   1   7         4
                75.74          4.64        1.2558    0   4   4         4
                75.89          2.59        1.2537    7   3   1         4
                76.14          3.69        1.2502    3   3   5         4
                76.61          1.44        1.2437   -7   3   6         4
                76.83          1.06        1.2407   -5   3   7         4
                76.89          2.35        1.2399  -10   2   4         4
                77.07          1.07        1.2375    5   4   0         4
                77.91          3.39        1.2262  -11   1   4         4
                78.59          2.52        1.2173    0   2   8         4
                78.70          1.01        1.2158    4   2   6         4
                79.30          1.13        1.2082   -6   4   2         4
                79.81          4.18        1.2017  -11   1   2         4
                79.85          1.15        1.2012   -4   4   5         4
                80.79          2.85        1.1896  -11   1   6         4
                80.85          3.10        1.1888   -4   2   9         4
                81.51          1.12        1.1809   -6   4   4         4
                83.41          1.24        1.1588    8   2   3         4
                83.78          2.11        1.1545   10   2   0         4
                84.20          1.81        1.1499  -10   2   7         4
                84.50          4.00        1.1466    7   1   5         4
                85.77          1.85        1.1328   10   0   2         2
                85.86          2.72        1.1319    3   1   8         4
                86.41          2.05        1.1261   11   1   0         4
                86.42          1.36        1.1260   -1   3   8         4
                86.81          1.53        1.1220   -8   2   9         4
                87.48          1.28        1.1150   -7   3   8         4
                88.34          2.14        1.1064  -11   1   8         4
                88.63          1.14        1.1035    2   5   1         4
                89.06          1.85        1.0993    6   4   2         4
                89.18          1.78        1.0981    4   4   4         4
                89.97          1.14        1.0906    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.