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Excerpt from The Mica in Argillaceous SedimentsThe determination Of the mineral composition1 Of a variety Of soils, clays, and shales, mostly from Illinois, has revealed in many Of them a constituent belonging to the mica group Of minerals and somewhat Similar to muscovite, heretofore referred to as the sericite-like mineral. Other investigators2 have noted what is apparently the same mineral in similar sediments, describing it as resembling m...

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Excerpt from Differential Thermal Analysis of Clays and Shales: A Control and Prospecting MethodFinally, differential thermal analyses are presented for sequences of samples from the pits of several operating clay products plants In order to illustrate the way in which the method can be applied in prospecting and in plant control.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forg...

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Excerpt from Differential Thermal Analysis of Clays and Shales: A Control and Prospecting MethodFinally, differential thermal analyses are presented for sequences of samples from the pits of several operating clay products plants In order to illustrate the way in which the method can be applied in prospecting and in plant control.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forg...

Excerpt from Petrographic and Ceramic Properties of Pennsylvanian Shales of IllinoisThe fact that all. Shales of equivalent fraction A content do not have the same green properties is evidence, if any is need ed, that these properties are not controlled solely by the amount of clay mineral and by the amount of material finer than mm. Shales with the same amount of frac tion A but composed of different kinds of clay mineral will not have the sa...

Excerpt from Application of Mineralogy to Soil Mechanics: 1 Some Fundamental Factors Influencing the Properties of Soil Materials, 2 the Composition in Relation to the Properties of Certain SoilsIt follows from the high base-exchange capacity Of montmorillonite and the dif ferent properties that result from difference in the exchangeable bases, that any change in the base-exchange composition Of such a soil as 1 and 2 would cause a decided cha...

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Excerpt from I. Reaction of Different Clay Minerals With Some Organic Cations, and II. Reaction of Clays With Organic Cations in Producing Refractory InsulationOther workers in this field have been primarily concerned with the reaction of organic cations, in relatively small dosages, with montmorillonite-type. Clays. Little or no information was available on the reac tion of organic cations with clays of other mineralogical groups. Furthermore...