Ferrihydrite
      Jansen E, Kyek A, Schafer W, Schwertmann U
      Applied Physics A74 (2002) S1004-S1006
      The structure of six-line ferrihydrite
      Locality: synthetic
      Sample: defective refinement
      _database_code_amcsd 0012028

      CELL PARAMETERS:    2.9550   2.9550   9.3700   90.000   90.000  120.000
      SPACE GROUP: P3        
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     70.857
      Density (g/cm3):      2.006
      MAX. ABS. INTENSITY / VOLUME**2:      5.966325605    
      RIR:      0.968
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                18.94          7.14        4.6850    0   0   2         1
                35.06         69.38        2.5591    1   0   0         3
                36.39         30.66        2.4687    0   1   1         3
                36.39         30.66        2.4687    1   0   1         3
                40.15         50.00        2.2459    0   1   2         3
                40.15         50.00        2.2459    1   0   2         3
                45.84         12.78        1.9795    0   1   3         3
                45.84         12.78        1.9795    1   0   3         3
                52.99         25.20        1.7279    1   0   4         3
                52.99         25.20        1.7279    0   1   4         3
                59.16         17.86        1.5617    0   0   6         1
                61.31          3.65        1.5120    1   0   5         3
                61.31          3.65        1.5120    0   1   5         3
                62.90         42.69        1.4775    1   1   0         3
                70.66          7.66        1.3331    0   1   6         3
                70.66          7.66        1.3331    1   0   6         3
                74.10          6.71        1.2796    2   0   0         3
                74.90          1.49        1.2678    0   2   1         3
                74.90          1.49        1.2678    2   0   1         3
                77.30          4.31        1.2343    2   0   2         3
                77.30          4.31        1.2343    0   2   2         3
                81.08          1.08        1.1861    1   0   7         3
                81.08          1.08        1.1861    0   1   7         3
                81.25          1.07        1.1840    2   0   3         3
                81.25          1.07        1.1840    0   2   3         3
                86.71          4.05        1.1229    2   0   4         3
                86.71          4.05        1.1229    0   2   4         3
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.