Maya Blue
      Giustetto R, Levy D, Chiari G
      European Journal of Mineralogy 18 (2006) 629-640
      Crystal structure refinement of Maya Blue pigment prepared with deuterated
      indigo, using neutron powder diffraction
      Locality: starting palygorskite from Chapas, Mexico
      _database_code_amcsd 0007167

      CELL PARAMETERS:   12.6360  17.8680   5.2230   90.000   90.000   90.000
      SPACE GROUP: Pbmn      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:   1179.249
      Density (g/cm3):      2.341
      MAX. ABS. INTENSITY / VOLUME**2:      13.79866575    
      RIR:      1.920
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                 8.57        100.00       10.3169    1   1   0         4
                14.02         26.28        6.3180    2   0   0         2
                16.45         25.03        5.3875    1   3   0         4
                19.05          1.29        4.6599    1   1   1         8
                19.69          2.02        4.5090    0   2   1         4
                19.88          9.38        4.4670    0   4   0         2
                20.92         19.75        4.2467    1   2   1         8
                21.68          2.59        4.0996    3   1   0         4
                24.25          4.97        3.6702    2   2   1         8
                24.40         12.58        3.6474    2   4   0         4
                25.91          5.24        3.4390    3   3   0         4
                26.25          1.12        3.3948    0   4   1         4
                26.73          5.92        3.3352    2   3   1         8
                27.66          4.26        3.2249    3   1   1         8
                28.25         10.19        3.1590    4   0   0         2
                29.01         17.44        3.0780    3   2   1         8
                30.00          2.18        2.9783    4   2   0         4
                31.14          1.42        2.8721    1   5   1         8
                32.87          2.30        2.7250    3   5   0         4
                33.53          8.13        2.6725    2   5   1         8
                34.34          8.43        2.6115    0   0   2         2
                34.67          4.93        2.5870    0   6   1         4
                34.78          1.43        2.5792    4   4   0         4
                35.09          3.36        2.5575    1   0   2         4
                35.42         15.81        2.5345    1   6   1         8
                35.46          1.39        2.5317    1   1   2         8
                36.50          4.28        2.4614    4   3   1         8
                37.22          1.82        2.4159    3   5   1         8
                37.26          1.05        2.4135    2   0   2         4
                37.57          3.90        2.3941    2   6   1         8
                40.32          2.47        2.2368    2   3   2         8
                40.38          1.11        2.2335    0   8   0         2
                40.94          1.96        2.2045    5   2   1         8
                40.94          1.35        2.2044    3   6   1         8
                41.94          1.26        2.1540    3   2   2         8
                42.95          2.68        2.1060    6   0   0         2
                43.51          3.27        2.0798    3   3   2         8
                46.79          1.30        1.9416    6   1   1         8
                50.84          1.38        1.7960    7   1   0         4
                53.73          3.01        1.7061    7   0   1         4
                58.27          1.00        1.5835    3   2   3         8
                58.86          1.39        1.5689    3  10   1         8
                61.72          2.13        1.5030    0   6   3         4
                62.36          1.35        1.4890    0  12   0         2
                72.82          1.55        1.2988    1   0   4         4
                73.17          1.04        1.2935    0  12   2         4
                73.61          1.26        1.2868    1  12   2         8
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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.