Deposits of kaolin in the Mahlangatsha mountains of Swaziland were derived from dolerite dikes in quartzites of the Precambrian Mozaan series. The dikes were intruded along faults prior to emplacement of biotite-microcline granite, hydrothermal solutions from which altered the dike. The age of this granite has been reported as 3,070

First Page Preview

First page PDF preview
You do not currently have access to this article.