Talc
Drits V A, Guggenheim S, Zviagina B B, Kogure T
Clays and Clay Minerals 60 (2012) 574-587
Structures of the 2:1 layers of pyrophyllite and talc
Note: structure is averaged to remove stacking disorder effects
Locality: Harford County, Maryland, USA
_database_code_amcsd 0020723
5.1848 8.9230 9.19 90.69 90.9 90 C-1
atom       x       y     z
Mg1        0       0     0
Mg2       .5 .166592     0
Si1  .833666 .166828 .2910
Si2  .333666 .333172 .2910
O1    .33361 .333025 .1176
O2    .83361 .166975 .1176
Oh1  .332973       0 .1126
Ob1  .351598      .5 .3481
Ob2  .574855  .24099 .3489
Ob3  .074855  .25901 .3489
H    .333024 .001528  .203