...Donald Raymond Hunter; J. G. Urie Abstract 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...

...J. W. Herath Abstract "Wadia, in the year 1940, marked out a kaolin deposit in the vicinity of Colombo, and estimated that eight million tons of refined kaolin could be extracted from this deposit. The kaolin deposits are mainly of the residual type. Kaolinite is the chief constituent mineral...

...C. C. Reeves Abstract Field investigation and sporadic drilling indicate greater kaolin clay reserves at Mesa-Alta than previously suspected. In fact, high-grade kaolin clay has been found at several different localities in the Mesa Alta area but topography, poor outcrops, and heavy forest cover...

... of the kaolinitic sediments. The color of the reddish zone is due to oxidation above the water table of Fe compounds. Throughout large areas the kaolin-bearing sands rest unconformably on the middle Miocene Hawthorne formation. On the eastern side of the Lake Wales Ridge, the kaolinitic sediments in some localities...

...Marcus Isaac Goldman Abstract The paper is based on the study of a series of specimens extending from the core of a residual kaolinized boulder-like body of nepheline syenite into the surrounding concretionary (so-called pisolitic and oolitic) bauxite. Alteration of feldspars to finely crystalline...

...George Isaac Whitlatch; Benjamin Gildersleeve Abstract Drill-prospecting by the Tennessee Valley Authority in 1941 near Clarksburg, Carroll County, Tennessee, disclosed a kaolin zone and associated series of sediments which are correlated with the Ackerman formation, the lowermost member...

...Marcus Isaac Goldman; Joshua Irving Tracey Abstract Investigation of the Arkansas bauxite deposits by the U. S. Geological Survey during the years 1942 to 1945 has brought out the fact that secondary kaolinization or silication of the bauxite is much more common than has been generally recognized...

... solutions invaded these rocks, altered welded tuffs to clay, and deposited kaolin minerals together with realgar, stibnite, pyrite, quartz, and other minerals, a hydrothermal or a volcanic origin for the pellets is considered unlikely. The sizes and shapes of the pellets, the presence of pellets and lithic...