Manganese-delta
      Wyckoff R W G
      Crystal Structures 1 (1963) 7-83
      Second edition. Interscience Publishers, New York, New York
      Sample at T = 1140 C, stable till melting point at 1245 C
      _database_code_amcsd 0011269

      CELL PARAMETERS:    3.0810   3.0810   3.0810   90.000   90.000   90.000
      SPACE GROUP: Im3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     29.247
      Density (g/cm3):      6.238
      MAX. ABS. INTENSITY / VOLUME**2:      226.1326168    
      RIR:     11.804
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                41.45        100.00        2.1786    1   1   0        12
                60.06         14.01        1.5405    2   0   0         6
                75.60         24.38        1.2578    2   1   1        24
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.