Pyrophyllite Lee J H, Guggenheim S American Mineralogist 66 (1981) 350-357 Single crystal X-ray refinement of pyrophyllite-1Tc _database_code_amcsd 0000823 5.160 8.966 9.347 91.18 100.46 89.64 C-1 atom x y z B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3) Al .4995 .16705 -.00008 0.0053 .00165 .00298 -.0005 0.0006 -.00006 Si1 .7449 -.00303 .29169 0.0057 .00160 .00289 -.0009 0.0006 0.00001 Si2 .7595 .32577 .29230 0.0057 .00162 .00309 -.0008 0.0009 -.00008 O1 .6495 .0018 .1155 0.0082 0.0023 0.0031 -.0004 0.0002 -.0001 O2 .7314 .3079 .1158 0.0068 0.0026 0.0030 -.0008 0.0006 -.0002 OH .2263 .1927 .1081 0.0080 0.0029 0.0038 0.0005 0.0012 0.0005 Ob1 .0498 .3891 .3589 0.0078 0.0027 0.0039 -.0021 0.0006 0.0002 Ob2 .7251 .1637 .3584 0.0113 0.0017 0.0039 -.0008 0.0017 -.0001 Ob3 .5452 .4426 .3325 0.0061 0.0031 0.0042 0.0002 0.0007 -.0007