within dickite. This is evidenced in the following findings. There is an oxygen atom from the all oxygen layer that lies at the center. The atoms of the O layer, the Si layer and the O, (OH) layer are situated for the ideal kaolin layer. X-ray experiments were performed by C. J. Ksanda and Tom F. W. Barth and it was concluded that dickite is composed of tiny layers of cations and anions which are parallel to the a-b plane stacked on top of one another which they found to be exactly as Gruner had described. It was also concluded that the two dimensional arrangement of some of the atoms are not as Gruner described. References Phyllosilicates Aluminium minerals Clay minerals group Monoclinic minerals Minerals in space group 9