Morphological Effects on Illite as a Result of Potassium Depletion*

Warren D. Huff
Department of Geology, University of Cincinnati, Cincinnati, Ohio 45221, U.S.A.
* Contribution No. 108.

Abstract: Several illites and a mixed-layer illite-montmorillonite developed fractures in some particles during progressive removal of interlayer potassium by solutions containing sodium tetraphenylboron. The appearance of the splinters in bundles, some connected to incompletely broken plates, suggests the process is related to the differential release of stresses known to exist as a consequence of octahedral-tetrahedral misfit. The formation of splinters produces additional surface area for ion removal and may influence the rate of vermiculite development.

Clays and Clay Minerals; October 1972 v. 20; no. 5; p. 295-301; DOI: 10.1346/CCMN.1972.0200506
© 1972, The Clay Minerals Society
Clay Minerals Society (www.clays.org)