Warwickite
      Moore P B, Araki T
      American Mineralogist 59 (1974) 985-1004
      Pinakiolite, Mg2MnO2[BO3]; warwickite, Mg(Mg0.5Ti0.5)O[BO3]; wightmanite,
      Mg5(O)(OH)5[BO3].nH2O: Crystal chemistry of complex 3 Angstrom wallpaper
      structures

      CELL PARAMETERS:   9.1970  9.3580  3.0850   90.000   90.000   90.000
      SPACE GROUP: Pnam      
      X-RAY WAVELENGTH:     1.541838
      MAX. ABS. INTENSITY / VOLUME**2:      11.36253222    
               2-THETA      INTENSITY    D-SPACING   H   K   L
                13.50         27.59        6.5594    1   1   0
                19.30          1.57        4.5985    2   0   0
                21.31         21.32        4.1703    1   2   0
                30.26         25.67        2.9540    1   3   0
                30.51          4.37        2.9299    0   1   1
                32.06          2.97        2.7917    1   1   1
                34.75         40.62        2.5815    2   3   0
                34.99         13.09        2.5643    3   2   0
                35.03        100.00        2.5619    2   0   1
                36.36         15.35        2.4710    2   1   1
                40.40          1.51        2.2328    4   1   0
                41.15          8.02        2.1935    0   3   1
                41.29          1.45        2.1865    3   3   0
                42.36          2.28        2.1336    1   3   1
                42.69         16.84        2.1181    3   1   1
                43.40         28.25        2.0852    2   4   0
                45.83          4.69        1.9798    2   3   1
                46.03         27.25        1.9720    3   2   1
                49.44          2.89        1.8436    4   0   1
                49.71          9.32        1.8340    1   5   0
                50.45          4.10        1.8088    4   1   1
                50.57          3.05        1.8049    5   1   0
                51.21         22.46        1.7839    3   3   1
                52.81          3.86        1.7335    2   5   0
                53.01          1.57        1.7276    2   4   1
                53.53          1.79        1.7119    5   2   0
                57.60          4.53        1.6002    0   5   1
                58.12         26.76        1.5871    4   3   1
                58.23          3.99        1.5844    5   3   0
                58.55          9.42        1.5765    1   5   1
                59.32          3.14        1.5578    5   1   1
                59.97         22.23        1.5425    0   0   2
                60.18          3.78        1.5377    1   6   0
                60.39          1.23        1.5328    6   0   0
                62.00         24.25        1.4969    5   2   1
                64.40          2.03        1.4467    1   2   2
                65.84          3.43        1.4185    3   5   1
                66.32          1.41        1.4094    5   3   1
                67.36          2.79        1.3901    3   6   0
                68.14         12.26        1.3762    1   6   1
                68.16          2.87        1.3757    6   3   0
                68.33          1.49        1.3727    6   0   1
                68.64          3.46        1.3673    1   3   2
                71.21          7.26        1.3241    2   3   2
                71.36          3.02        1.3218    3   2   2
                71.88          2.04        1.3134    4   5   1
                71.98          1.88        1.3119    5   5   0
                73.92          3.26        1.2821    6   4   0
                75.10          5.74        1.2649    7   2   0
                76.88          4.67        1.2401    2   4   2
                77.88          1.49        1.2266    0   7   1
                78.70          2.12        1.2159    1   7   1
                81.10          1.42        1.1859    6   5   0
                81.54          3.15        1.1805    1   5   2
                82.21          1.00        1.1726    5   1   2
                83.98          1.56        1.1524    2   5   2
                84.22          2.53        1.1496    8   0   0
                88.29          1.74        1.1069    6   5   1
                88.46          1.88        1.1052    5   3   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.