Hostname: page-component-78c5997874-mlc7c Total loading time: 0 Render date: 2024-11-04T18:40:58.680Z Has data issue: false hasContentIssue false

Mineralogical transformations accompanying the chemical weathering of clay-slates from New South Wales

Published online by Cambridge University Press:  14 March 2018

P. Bayliss
Affiliation:
Department of Applied Geology, University of New South Wales, Australia
C. Loughnan
Affiliation:
Department of Applied Geology, University of New South Wales, Australia
Get access

Abstract

A study has been made of the mineralogical transformations that have accompanied the chemical weathering of some Palaeozoic clay-slates from New South Wales. The weathered sequences occur within a limited range of climatic and topographical conditions. Chlorite, interlayered with other expanded-lattice silicate minerals, is the least chemically stable of the primary constituents. Montmorillonite is a little more resistant to the percolating waters, whereas illite, present in all primary materials as the 2M1 polymorph, is relatively chemically stable. In the zone of maximum leaching, however, partial degradation and loss of illite is apparent. Kaolinite is the end-product of the breakdown of these clay minerals.

Type
Research Article
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1964

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Foster, M.D. (1962) Prof. Pap. U.S. geol. Surv. 414-A.Google Scholar
Loughnan, F.C. (1958) Univ. of N.S.W. Geol. Ser. No. 2.Google Scholar
Walker, G.F. (1956) Clays and Clay Minerals. Nat. Acad. Sci.-Nat. Res. Counc. Publ. 456, 101.Google Scholar