Polymorphic phase changes during heating of dioctahedral layer silicates
- 1 April 1962
- journal article
- research article
- Published by Taylor & Francis in Geologiska Föreningen i Stockholm Förhandlingar
- Vol. 84 (2) , 224-229
- https://doi.org/10.1080/11035896209449221
Abstract
It is demonstrated that dioctahedral layer silicates, upon heating, transform into trioctahedral modifications. The mechanism of the transformation must be a redistribution of the sixcoordinated trivalent ions over all the octahedral positions; every site will be occupied by two-thirds Al-atom. In this way pyrophyllite, e. g., will aquire a lalc-like structure. Besides pyrophyllite, the studied minerals are hydrous mica, montmorillonite, and paragonite.Keywords
This publication has 1 reference indexed in Scilit:
- Synthetic and natural muscovitesGeochimica et Cosmochimica Acta, 1955