Ameghinite
      Dal Negro A, Pozas J M M, Ungaretti L
      American Mineralogist 60 (1975) 879-883
      The crystal structure of ameghinite
      _database_code_amcsd 0000470

      CELL PARAMETERS:   18.4280   9.8820   6.3260   90.000  104.400   90.000
      SPACE GROUP: C2/c      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:   1115.807
      Density (g/cm3):      2.041
      MAX. ABS. INTENSITY / VOLUME**2:      4.312159105    
      RIR:      0.688
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                 9.91          4.67        8.9245    2   0   0         2
                16.70         11.84        5.3099   -1   1   1         4
                17.40          4.52        5.0971    3   1   0         4
                17.95         52.04        4.9410    0   2   0         2
                18.73         18.00        4.7371    1   1   1         4
                19.90          9.04        4.4623    4   0   0         2
                20.15          3.69        4.4073   -3   1   1         4
                20.55          3.81        4.3227    2   2   0         4
                23.12          4.36        3.8462    0   2   1         4
                23.72          3.79        3.7514   -2   2   1         4
                24.99         11.67        3.5630    3   1   1         4
                26.55         23.96        3.3575    5   1   0         4
                26.92          2.38        3.3116    4   2   0         4
                27.54         11.24        3.2393    1   3   0         4
                28.17          4.64        3.1682   -4   2   1         4
                28.35         35.16        3.1480   -2   0   2         2
                29.15        100.00        3.0636    0   0   2         2
                29.74          8.05        3.0038   -1   1   2         4
                30.04          6.98        2.9748    6   0   0         2
                30.63          6.33        2.9187   -1   3   1         4
                30.68         13.84        2.9142   -3   1   2         4
                31.03          3.08        2.8822   -4   0   2         2
                31.83         15.48        2.8118    1   3   1         4
                33.04          3.42        2.7115    4   2   1         4
                33.20          8.06        2.6989    2   0   2         2
                33.76         13.13        2.6550   -2   2   2         4
                34.44          1.53        2.6037    0   2   2         4
                35.14          2.26        2.5540   -6   2   1         4
                35.21         32.96        2.5486    6   2   0         4
                36.00          1.61        2.4946    3   3   1         4
                36.37          7.19        2.4705    0   4   0         2
                36.39          7.98        2.4690    7   1   0         4
                36.49          1.09        2.4621   -6   0   2         2
                37.78          1.84        2.3810    2   4   0         4
                37.99          2.71        2.3686    2   2   2         4
                39.32          3.84        2.2913    0   4   1         4
                39.61          1.81        2.2754    4   0   2         2
                39.69          1.08        2.2707   -2   4   1         4
                40.30          4.10        2.2379   -3   3   2         4
                40.43         11.39        2.2311    8   0   0         2
                40.95         10.62        2.2036   -6   2   2         4
                41.06          4.58        2.1984   -7   1   2         4
                41.47          3.38        2.1773    1   3   2         4
                41.60         11.35        2.1712    2   4   1         4
                41.79          1.44        2.1614    4   4   0         4
                43.56          6.52        2.0775   -5   3   2         4
                43.60          3.78        2.0757   -8   2   1         4
                43.80          5.73        2.0668    4   2   2         4
                43.86          1.26        2.0643   -8   0   2         2
                44.11          4.76        2.0529   -3   1   3         4
                44.33          5.47        2.0435   -1   1   3         4
                44.56          2.64        2.0334    8   2   0         4
                44.96          7.86        2.0163    7   3   0         4
                46.21          1.11        1.9644    1   5   0         4
                46.31          1.08        1.9603   -5   1   3         4
                46.72          1.32        1.9445    9   1   0         4
                46.85          1.81        1.9391   -2   2   3         4
                46.93          3.64        1.9362    1   1   3         4
                47.26          2.26        1.9231    0   4   2         4
                47.80          2.27        1.9028   -6   4   1         4
                47.86          1.61        1.9006    6   4   0         4
                48.26          1.89        1.8857   -1   5   1         4
                48.54          6.17        1.8757   -4   4   2         4
                48.54          3.10        1.8756    3   5   0         4
                48.95          2.47        1.8607   -7   3   2         4
                49.09          7.94        1.8559    1   5   1         4
                49.71          5.53        1.8342   -3   5   1         4
                50.05          6.50        1.8223    2   4   2         4
                50.35          1.30        1.8124    7   3   1         4
                50.38          5.15        1.8111    8   2   1         4
                51.28          2.03        1.7815    6   2   2         4
                51.64          5.36        1.7701    3   1   3         4
                51.94          2.62        1.7605    5   3   2         4
                52.47          2.98        1.7439   -6   4   2         4
                52.53          1.97        1.7422  -10   0   2         2
                52.75          2.24        1.7354    9   1   1         4
                52.75          1.17        1.7352   -9   3   1         4
                53.09          2.23        1.7252  -10   2   1         4
                53.29          5.24        1.7191   -5   5   1         4
                53.61          1.03        1.7096   -5   3   3         4
                54.67          2.48        1.6787   10   2   0         4
                54.85          2.79        1.6737    4   4   2         4
                55.97          7.34        1.6430  -10   2   2         4
                56.13          5.18        1.6386   -8   2   3         4
                56.76          1.60        1.6218    8   0   2         2
                56.85          1.05        1.6197    2   6   0         4
                57.57          1.26        1.6009   -7   3   3         4
                58.09          3.53        1.5878    5   1   3         4
                58.55          4.03        1.5765   -2   0   4         2
                59.47          3.13        1.5542    9   3   1         4
                59.80          1.25        1.5466    3   5   2         4
                60.43          2.55        1.5318    0   0   4         2
                61.77          1.63        1.5019   -2   2   4         4
                61.77          1.01        1.5017    2   4   3         4
                62.50          1.20        1.4859    9   1   2         4
                66.01          1.03        1.4152    7   1   3         4
                66.51          1.53        1.4059    2   6   2         4
                71.21          1.85        1.3242    3   7   1         4
                72.20          2.55        1.3084   -5   7   1         4
                72.62          1.32        1.3019    0   4   4         4
                72.63          1.08        1.3018    4   2   4         4
                76.88          1.49        1.2400   -7   7   1         4
                83.20          1.52        1.1611   -9   7   1         4
                84.04          1.33        1.1516  -13   5   1         4
                84.77          1.19        1.1437  -16   0   2         2
                84.98          1.10        1.1413   -6   8   1         4
                86.83          1.31        1.1217    0   6   4         4
                87.10          1.22        1.1190   -6   6   4         4
                87.91          1.06        1.1106    3   7   3         4
                87.96          1.44        1.1102   15   1   1         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.