The plain, sandy in its northern part, is in the south a deep bed of argillaceous marl, scattered over with great granite boulders and fragments of greenstone. [Please select]
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Classification: Argillaceous, Aluminous, Carboniferous, Silicious and Basic Fireclay Goods--Fireclay Mortar (Pug)--Tests for Fireclay Goods. [Please select]
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Large globular or compound globular argillaceous concretions, coated with gypsum, were abundant at this point. [Please select]
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Argillaceous: of the texture, appearance or color of clay. [Please select]
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Rocks of this kind--such as clays, and also the lovely blue gem, sapphire--are called Argillaceous Rocks, from the Latin word for clay, and belong to the second class. [Please select]
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They are generally argillaceous, and are common upon the Upper Missouri river, and throughout the vast desert regions that lie west of the Del Norte. [Please select]
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