Koenenite
      Allmann R, Lohse H N, Hellner E
      Zeitschrift fur Kristallographie 126 (1968) 7-22
      Die kristallstruktur des koenenits, eine doppelschichtstruktur mit zwei
      inkommensurablen teilgittern
      Note: one of two substructures in koenenite
      _database_code_amcsd 0010654

      CELL PARAMETERS:    3.0520   3.0520  10.8800   90.000   90.000  120.000
      SPACE GROUP: P-3m1     
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     87.766
      Density (g/cm3):      1.084
      MAX. ABS. INTENSITY / VOLUME**2:      64.13606898    
      RIR:     19.274
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                 8.13        100.00       10.8800    0   0   1         2
                16.29         11.02        5.4400    0   0   2         2
                24.55          1.02        3.6267    0   0   3         2
                34.93          1.99        2.5684    0   1   1         6
                37.84          4.03        2.3774    0   1   2         6
                42.31          4.22        2.1360    0   1   3         6
                48.00          2.78        1.8956    0   1   4         6
                54.63          1.25        1.6799    0   1   5         6
                60.69          1.10        1.5260    1   1   0         6
                61.35          1.79        1.5112    1   1   1        12
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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.