Povondraite
      Grice J D, Ercit T S
      Neues Jahrbuch fur Mineralogie, Abhandlungen 165 (1993) 245-266
      Ordering of Fe and Mg in the tourmaline crystal structure: The correct formula
      Sample: Povondraite 144478
      Locality: San Francisco mine, Villa Tu nari, Bolivia
      _database_code_amcsd 0018783

      CELL PARAMETERS:   16.1860  16.1860   7.4440   90.000   90.000  120.000
      SPACE GROUP: R3m       
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:   1688.947
      Density (g/cm3):      3.000
      MAX. ABS. INTENSITY / VOLUME**2:      7.359974978    
      RIR:      0.799
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                10.93         80.22        8.0930    1   1   0         6
                13.47          2.84        6.5745    1   0   1         3
                17.38         63.47        5.1029    0   2   1         3
                18.99         44.91        4.6725    3   0   0         3
                20.58         41.27        4.3165    2   1   1         6
                21.97         89.19        4.0465    2   2   0         6
                24.75         41.19        3.5973    0   1   2         3
                25.85         50.47        3.4461    1   3   1         6
                27.13          2.43        3.2872    2   0   2         3
                28.14         18.17        3.1706    4   0   1         3
                29.20         17.30        3.0589    4   1   0         6
                29.33         75.15        3.0456    1   2   2         6
                30.28          3.12        2.9521    3   2   1         6
                33.21          2.04        2.6977    3   3   0         6
                33.33         25.12        2.6885    3   1   2         6
                34.18        100.00        2.6236    0   5   1         3
                35.17          6.44        2.5514    0   4   2         3
                35.99         12.85        2.4957    2   4   1         6
                36.20          5.10        2.4813    0   0   3         1
                36.94         21.29        2.4334    2   3   2         6
                37.72         27.78        2.3849    5   1   1         6
                37.93          7.06        2.3723    1   1   3         6
                38.54          3.20        2.3362    6   0   0         3
                40.18          1.06        2.2446    5   2   0         6
                40.27         12.86        2.2393    5   0   2         3
                41.00          2.91        2.2014    4   3   1         6
                41.19         14.60        2.1915    0   3   3         3
                41.19         11.17        2.1915    3   0   3         3
                41.86         19.65        2.1582    4   2   2         6
                42.75         12.41        2.1153    2   2   3         6
                43.39         37.57        2.0854    1   5   2         6
                44.08          1.87        2.0546    1   6   1         6
                44.79          2.57        2.0233    4   4   0         6
                46.34         47.34        1.9593    3   4   2         6
                46.99          5.38        1.9338    7   0   1         3
                46.99          3.42        1.9338    3   5   1         6
                47.16          1.95        1.9270    1   4   3         6
                47.16          1.93        1.9270    4   1   3         6
                48.40          2.72        1.8808    6   2   1         6
                49.07          2.35        1.8567    7   1   0         6
                49.15          4.34        1.8537    6   1   2         6
                49.40          5.64        1.8448    1   0   4         3
                49.94          1.88        1.8263    3   3   3         6
                50.76          2.23        1.7987    0   2   4         3
                51.76          5.26        1.7660    6   3   0         6
                51.85          2.55        1.7635    0   7   2         3
                51.85          2.89        1.7635    5   3   2         6
                52.44          9.40        1.7448    5   4   1         6
                53.16          1.43        1.7230    2   6   2         6
                53.90         15.95        1.7010    0   6   3         3
                53.90          4.74        1.7010    6   0   3         3
                54.68          2.48        1.6786    1   3   4         6
                55.02         21.59        1.6689    2   7   1         6
                55.94          3.47        1.6436    4   0   4         3
                56.89         12.17        1.6186    5   5   0         6
                56.96          8.72        1.6166    4   5   2         6
                57.19          6.31        1.6107    3   2   4         6
                57.52          5.27        1.6022    8   1   1         6
                58.75          4.90        1.5717    4   6   1         6
                59.34         12.69        1.5575    9   0   0         3
                59.41          9.54        1.5557    7   2   2         6
                59.63         14.90        1.5505    0   5   4         3
                59.96          1.26        1.5428    7   3   1         6
                60.54          4.24        1.5294    8   2   0         6
                60.83          5.77        1.5228    2   4   4         6
                61.80          2.47        1.5012    1   8   2         6
                62.01         14.62        1.4965    5   1   4         6
                62.48          5.86        1.4866    1   7   3         6
                62.76          3.06        1.4805    0   1   5         3
                62.97          4.92        1.4761    6   4   2         6
                63.93          1.85        1.4563    2   0   5         3
                64.06          4.61        1.4535    7   4   0         6
                64.34         14.64        1.4478    4   3   4         6
                64.66          2.03        1.4416    1   9   1         6
                64.66          6.11        1.4416    6   5   1         6
                64.80          3.21        1.4388    3   6   3         6
                64.80          8.71        1.4388    6   3   3         6
                67.35          1.67        1.3903    3   1   5         6
                68.06          6.57        1.3775   10   0   1         3
                68.47          6.63        1.3703    0   4   5         3
                68.67          3.81        1.3668    5   6   2         6
                68.88          3.52        1.3632    3   5   4         6
                69.18          1.31        1.3580    9   2   1         6
                69.31          2.28        1.3557    5   5   3         6
                69.59          3.02        1.3510    2   3   5         6
                69.72          2.49        1.3488    6   6   0         6
                69.99          2.65        1.3443    6   2   4         6
                70.82         13.11        1.3305   10   1   0         6
                70.89          2.09        1.3294    8   3   2         6
                71.39          2.06        1.3213    5   7   1         6
                71.52          1.77        1.3192    0   9   3         3
                71.52          2.90        1.3192    9   0   3         3
                71.79         10.60        1.3149    5   0   5         3
                72.48          2.99        1.3040    8   4   1         6
                72.61          3.41        1.3020    2   8   3         6
                72.61          1.00        1.3020    8   2   3         6
                73.01          7.64        1.2959    9   3   0         6
                73.27          6.97        1.2919    5   4   4         6
                73.97          1.03        1.2815    1   5   5         6
                75.24          2.30        1.2630    7   5   2         6
                75.72          4.10        1.2560    0  11   1         3
                76.12          1.59        1.2505    3   4   5         6
                76.31          2.94        1.2479    4   8   2         6
                76.83          2.08        1.2407    0   0   6         1
                77.90          1.52        1.2263    1   1   6         6
                78.25          1.11        1.2217    6   1   5         6
                78.64          1.24        1.2167    4   6   4         6
                79.98          2.50        1.1996   11   1   1         6
                80.02          1.48        1.1991    0   3   6         3
                80.02          1.76        1.1991    3   0   6         3
                82.21          4.96        1.1726   10   1   3         6
                82.59          1.51        1.1681   12   0   0         3
                83.90          1.38        1.1533    6   5   4         6
                84.31          4.17        1.1487    9   3   3         6
                84.56          1.09        1.1459    4   5   5         6
                86.30          1.19        1.1272    3   3   6         6
                86.65          1.96        1.1236    7   2   5         6
                87.03          1.63        1.1197   10   0   4         3
                88.73          1.09        1.1025    1   8   5         6
                89.43          1.67        1.0957    0   6   6         3
                89.77          1.10        1.0924    6   4   5         6
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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.