Dickite Bish D L, Johnston C T Clays and Clay Minerals 41 (1993) 297-304 Rietveld refinement and Fourier-transform infrared spectroscopic study of the dickite structure at low temperature Locality: St. Claire, Pennsylvania, USA Note: Sample at T = 12 K _database_code_amcsd 0012236 5.1474 8.9386 14.390 90 96.483 90 Cc atom x y z Uiso Si1 .0126 .3992 .0398 .0003 Si2 .9977 .0692 .0403 .0003 Al1 .9127 .2489 .2283 .0027 Al2 .4133 .4149 .2276 .0027 O1 .9550 .2352 .9938 .0015 O2 .2577 .4695 .9932 .0015 O3 .7663 .5054 .0086 .0015 O4 .0786 .3880 .1516 .0015 O5 .0052 .0790 .1523 .0015 Oh6 .5814 .2722 .1564 .0032 Oh7 .2442 .2761 .2976 .0032 Oh8 .2447 .8914 .2990 .0032 Oh9 .3191 .5813 .2974 .0032 H1 .4795 .1848 .1549 .0184 H2 .2957 .2558 .3627 .0141 H3 .326 .9456 .3515 .023 H4 .2891 .5813 .3605 .019