Hostname: page-component-7479d7b7d-pfhbr Total loading time: 0 Render date: 2024-07-11T21:40:29.863Z Has data issue: false hasContentIssue false

Bauxitic weathering at Mount Zomba, Nyasaland

Published online by Cambridge University Press:  14 March 2018

I. Stephen*
Affiliation:
Rothamsted Experimental Station, Harpenden, Herts
Get access

Abstract

Gibbsite, the dominant mineral in red and yellow earths from Mount Zomba in southern Nyasaland, is derived directly from orthoclase and acid plagioclase (albite-oligoclase). The bauxitization apparently took place at an early stage in the history of the mountain. The evidence suggests that kaolinization succeeds bauxitization in the sequence of weathering, and is related to present-day weathering conditions.

Type
Research Article
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1963

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

Allen, V. T., 1952. Bull. geol. Soc. Amer., 63, 649.Google Scholar
Brindley, G. W., and Robinson, K., 1947. Trans. Brit. Ceram. Soc., 46, 49.Google Scholar
Brindley, G. W., and Robinson, K., 1951. X-ray Identification and Crystal Structures of Clay Minerals (Brindley, G. W., editor). Mineralogical Society, London. Chapter VI, p. 173.Google Scholar
Dixey, F., 1925. Mining Mag., 33, 201.Google Scholar
Dixey, F., Campbell, Smith W., and Bisset, C. B., 1955. The Chilwa Series of Southern Nyasaland. Bull. geol. Surv. Nyasald, No. 5 (Revised). Government Printer, Zomba, Nyasaland.Google Scholar
Eyles, V. A., 1952. The Composition and Origin of the Antrim Laterites and Bauxites. Mere. geoL Surv., Northern Ireland. H.M.S.O., Belfast.Google Scholar
Goldman, M. I., and Tracey, J. I., 1946. Econ. Geol., 41, 567.Google Scholar
Harrison, J. B., 1934. The Katamorphism of Igneous Rocks under Humid Tropical Conditions. Imperial Bureau of Soil Science, Harpenden.Google Scholar
Winchell, A. N., and Winchell, H., 1951. Elements of Optical Mineralogy. Part II: Description of Minerals. 4th Edition. Wiley, New York.Google Scholar
Young, A., 1960. Preliminary Soil Map of Nyasaland. Government Printer, Zomba, Nyasaland.Google Scholar