Niningerite
      Wyckoff R W G
      Crystal Structures 1 (1963) 85-237
      Second edition. Interscience Publishers, New York, New York
      rocksalt structure
      _database_code_amcsd 0011350

      CELL PARAMETERS:    5.2033   5.2033   5.2033   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    140.876
      Density (g/cm3):      2.657
      MAX. ABS. INTENSITY / VOLUME**2:      36.80377729    
      RIR:      4.510
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                29.74          3.59        3.0041    1   1   1         8
                34.47        100.00        2.6016    2   0   0         6
                49.55         61.43        1.8396    2   2   0        12
                61.76         18.92        1.5021    2   2   2         8
                72.69          8.00        1.3008    4   0   0         6
                83.00         20.86        1.1635    4   2   0        24
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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.