Boltwoodite
      Stohl F V, Smith D K
      American Mineralogist 66 (1981) 610-625
      The crystal chemistry of the uranyl silicate minerals
      Locality: New Method mine, Amboy, California, USA
      _database_code_amcsd 0000838

      CELL PARAMETERS:    7.0730   7.0640   6.6380   90.000  105.750   90.000
      SPACE GROUP: P2_1      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    319.207
      Density (g/cm3):      4.384
      MAX. ABS. INTENSITY / VOLUME**2:      89.86592842    
      RIR:      6.675
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                13.00        100.00        6.8074    1   0   0         2
                13.86         31.16        6.3888    0   0   1         2
                16.25         20.92        5.4557   -1   0   1         2
                18.73         33.79        4.7383    0   1   1         2
                20.57         16.78        4.3179   -1   1   1         2
                21.50          4.71        4.1323    1   0   1         2
                24.96         25.85        3.5668    1   1   1         2
                25.21         17.62        3.5320    0   2   0         1
                26.11         13.81        3.4129   -2   0   1         2
                26.18         14.67        3.4037    2   0   0         2
                28.47         22.74        3.1351    1   2   0         2
                28.88          4.12        3.0911    0   2   1         2
                29.06          5.05        3.0731   -2   1   1         2
                29.12          1.91        3.0663    2   1   0         2
                30.14         10.11        2.9649   -1   2   1         2
                30.26         19.17        2.9533   -1   1   2         2
                30.72         15.24        2.9106    0   1   2         2
                33.37          2.89        2.6849    1   2   1         2
                35.27          6.37        2.5447   -2   1   2         2
                35.43          5.57        2.5333    2   1   1         2
                36.45          5.62        2.4649    1   1   2         2
                36.61          5.15        2.4543   -2   2   1         2
                36.67          4.72        2.4509    2   2   0         2
                38.32          1.94        2.3488   -3   0   1         2
                39.72          2.30        2.2691    3   0   0         2
                40.82          1.14        2.2106   -1   0   3         2
                40.84          2.97        2.2094    0   3   1         2
                41.78          1.23        2.1619   -1   3   1         2
                41.81          1.17        2.1604    3   1   0         2
                42.45          1.97        2.1296    0   0   3         2
                42.87          1.09        2.1097   -1   1   3         2
                44.12          2.35        2.0526   -3   1   2         2
                44.27          2.57        2.0458    1   3   1         2
                45.53          1.69        1.9922   -2   1   3         2
                45.75          2.07        1.9831    2   1   2         2
                46.43          1.70        1.9558   -3   2   1         2
                47.63          1.90        1.9091    3   2   0         2
                47.69          2.27        1.9070   -1   3   2         2
                47.80          1.55        1.9028    3   1   1         2
                48.00          2.02        1.8954    0   3   2         2
                50.01          1.33        1.8237    0   2   3         2
                51.25          1.13        1.7825   -2   3   2         2
                51.37          1.02        1.7785    2   3   1         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.