Bertrandite
      Downs J W, Ross F K
      American Mineralogist 72 (1987) 979-983
      Neutron-diffraction study of bertrandite
      Note: O2y has been corrected

      CELL PARAMETERS:   8.7135 15.2680  4.5683   90.000   90.000   90.000
      SPACE GROUP: Cmc2_1    
      X-RAY WAVELENGTH:     1.541838
      MAX. ABS. INTENSITY / VOLUME**2:      6.671553616    
               2-THETA      INTENSITY    D-SPACING   H   K   L
                11.69         14.42        7.5678    1   1   0
                20.21         31.12        4.3946    1   3   0
                20.38         91.69        4.3568    2   0   0
                22.68         38.44        3.9200    0   2   1
                22.74          8.05        3.9110    1   1   1
                23.30         18.92        3.8170    0   4   0
                28.18        100.00        3.1671    1   3   1
                30.52          1.07        2.9291    0   4   1
                30.68         11.68        2.9141    2   2   1
                31.03          3.34        2.8818    1   5   0
                31.15          4.23        2.8710    2   4   0
                31.35          9.64        2.8533    3   1   0
                35.27         19.58        2.5447    0   6   0
                35.59         50.39        2.5226    3   3   0
                36.88          1.27        2.4373    1   5   1
                37.15          7.99        2.4201    3   1   1
                39.45         43.85        2.2841    0   0   2
                40.58         24.65        2.2230    0   6   1
                40.86         24.14        2.2083    3   3   1
                41.08          2.02        2.1973    2   6   0
                41.29          1.49        2.1867    1   1   2
                41.45          8.52        2.1784    4   0   0
                42.98          3.96        2.1045    3   5   0
                44.71          2.06        2.0267    1   3   2
                44.80          5.17        2.0230    2   0   2
                45.82         18.26        1.9802    2   6   1
                46.32          4.58        1.9600    0   4   2
                47.35          2.38        1.9199    1   7   1
                47.57          1.44        1.9114    3   5   1
                47.65          1.92        1.9085    0   8   0
                51.02          1.27        1.7900    1   5   2
                51.10          1.76        1.7875    2   4   2
                51.23          3.60        1.7832    3   1   2
                51.92          1.14        1.7610    0   8   1
                53.94          6.92        1.6998    0   6   2
                54.17          7.48        1.6932    3   3   2
                55.16          2.80        1.6652    1   9   0
                55.53          1.29        1.6548    4   6   0
                55.76          8.97        1.6487    5   3   0
                56.48          3.91        1.6294    3   7   1
                56.87          1.21        1.6191    5   1   1
                58.26          1.67        1.5835    2   6   2
                58.55          5.18        1.5764    4   0   2
                59.04          4.40        1.5645    1   9   1
                59.40          8.35        1.5559    4   6   1
                59.62          7.30        1.5508    5   3   1
                59.75          3.59        1.5477    3   5   2
                62.16          1.88        1.4933    0   2   3
                63.51         13.41        1.4649    3   9   0
                63.52          1.35        1.4646    0   8   2
                64.13          5.49        1.4523    6   0   0
                64.33          1.14        1.4481    0  10   1
                64.80          6.97        1.4388    1   3   3
                66.15          1.19        1.4127    2   2   3
                67.10          1.28        1.3949    3   9   1
                68.96          2.58        1.3618    6   2   1
                69.22          1.09        1.3573    6   4   0
                69.91          1.11        1.3456    1   9   2
                70.24          1.07        1.3401    4   6   2
                70.43          2.67        1.3368    5   3   2
                72.31         11.62        1.3067    0   6   3
                72.43          1.31        1.3048    5   7   1
                72.51         10.63        1.3037    3   3   3
                74.59          2.21        1.2723    0  12   0
                75.35          2.08        1.2613    6   6   0
                76.04         10.26        1.2516    2   6   3
                77.39          5.89        1.2331    3   9   2
                77.95          1.18        1.2257    0  12   1
                77.96          4.80        1.2255    6   0   2
                78.28          6.65        1.2213    2  12   0
                78.70          4.04        1.2158    6   6   1
                78.72          4.29        1.2156    5   9   0
                79.33          1.63        1.2078    3  11   1
                81.59          1.16        1.1799    2  12   1
                82.03          3.27        1.1747    5   9   1
                82.53          5.63        1.1689    7   3   1
                82.70          1.44        1.1669    6   4   2
                84.45          1.18        1.1471    3   7   3
                87.13          7.16        1.1186    5   3   3
                88.51          1.36        1.1047    2   0   4
                88.57          2.13        1.1041    6   6   2
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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.