Braunite
      Miletich R, Allan D R, Angel R J
      Physics and Chemistry of Minerals 25 (1998) 183-192
      Structural control of polyhedral compression in synthetic braunite,
      Mn2+Mn3+6O8SiO4
      Sample: P = 4.51 GPa
      _database_code_amcsd 0008127

      CELL PARAMETERS:    9.3480   9.3480  18.5739   90.000   90.000   90.000
      SPACE GROUP: I4_1/acd  
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:   1623.082
      Density (g/cm3):      4.948
      MAX. ABS. INTENSITY / VOLUME**2:      78.97319314    
      RIR:      5.197
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                16.46          2.08        5.3852    1   1   2         8
                18.99          1.98        4.6740    2   0   0         4
                25.71          5.98        3.4647    2   1   3        16
                33.27        100.00        2.6926    2   2   4         8
                38.52         12.58        2.3370    4   0   0         4
                38.79          5.72        2.3217    0   0   8         2
                42.15          2.50        2.1438    3   3   2         8
                42.27          3.00        2.1379    3   1   6        16
                42.52          7.06        2.1261    3   2   5        16
                48.97          2.73        1.8602    4   3   1        16
                50.76          1.16        1.7986    5   1   2        16
                53.13          2.49        1.7237    4   1   7        16
                55.62         10.88        1.6525    4   4   0         4
                55.82         27.81        1.6471    4   0   8         8
                60.59          1.11        1.5283    4   3   7        16
                60.68          2.48        1.5262    4   1   9        16
                62.24          2.22        1.4915    6   1   3        16
                63.97          1.88        1.4554    5   4   1        16
                65.76          1.15        1.4201    6   1   5        16
                66.37         14.23        1.4084    6   2   4        16
                66.73          9.37        1.4017    2   2  12         8
                69.09          1.26        1.3595    6   3   3        16
                69.87          4.33        1.3463    4   4   8         8
                82.56          1.54        1.1685    8   0   0         4
                83.22          1.74        1.1609    0   0  16         2
                83.55          1.08        1.1572    8   1   1        16
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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.