Vermiculite
      Arguelles A, Leoni M, Blanco J A, Marcos C
      American Mineralogist 95 (2010) 126-134
      Semi-ordered crystalline structure of the Santa Olalla vermiculite
      inferred from X-ray powder diffraction
      Locality: Santa Olalla, Toledo Province, Spain
      _database_code_amcsd 0020497

      CELL PARAMETERS:    5.3434   9.2540  14.3400   90.000   97.091   90.000
      SPACE GROUP: P1        
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    703.658
      Density (g/cm3):      2.188
      MAX. ABS. INTENSITY / VOLUME**2:      60.45098075    
      RIR:      8.996
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                 6.21        100.00       14.2303    0   0   1         1
                19.18          2.85        4.6270    0   2   0         1
                19.63          1.86        4.5217   -1  -1   1         1
                20.92          2.27        4.2466    1  -1   1         1
                20.92          1.48        4.2465    1   1   1         1
                21.85          1.76        4.0672   -1   1   2         1
                21.85          1.07        4.0672   -1  -1   2         1
                22.93          1.09        3.8790    0  -2   2         1
                25.03          2.10        3.5576    0   0   4         1
                31.43          3.74        2.8461    0   0   5         1
                33.82          1.43        2.6507   -1   3   1         1
                33.82          1.43        2.6507   -1  -3   1         1
                35.20          1.54        2.5493   -1   3   2         1
                35.20          1.54        2.5493   -1  -3   2         1
                37.64          1.29        2.3897    2   0   2         1
                37.66          1.94        2.3885   -1  -3   3         1
                37.66          1.94        2.3885   -1   3   3         1
                41.00          1.38        2.2015    2   0   3         1
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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.