Dickite
Dera P, Prewitt C T, Japel S, Bish D L, Johnston C T
American Mineralogist 88 (2003) 1428-1435
Pressure-controlled polytypism in hydrous layered materials
Sample: High pressure dickite at P = 4.1 GPa
_database_code_amcsd 0003171
5.082 8.757 13.771 90 89.60 90 Cc
atom      x     y      z Uiso
Si1   .0460 .4880  .0380 .005
Si2   .0325 .1589  .0370 .005
Al1   .8790 .3352  .2330 .005
Al2   .3855 .5001  .2340 .005
O1    .9870 .3240  .9860 .000
O2    .3160 .5500 -.0090 .004
O3    .8270 .6060 -.0040 .007
O4    .0710 .4780  .1550 .008
O5    .0020 .1700  .1550 .006
Oh1   .5780 .3600  .1610 .003
Oh2   .1970 .3530  .3040 .005
Oh3   .1900 .9840  .3030 .010
Oh4   .2620 .6660  .3010 .011
H1    .4964 .2556  .1421
H2    .2349 .2821  .3511
H3    .2518 .0170  .3557
H4    .2329 .6345  .3701