Translations:Benutzer:Arian/Klett-Mini-Test/815/en

Clay stands in closer relation to the siliceous than to the lime. This shows itself in the silicate-crystalline layered structure of the clay minerals. Yet it has the capacity — as though in a higher synthesis — to unite the silica pole and the lime pole with each other. Its dynamic is twofold: on the one hand, the surface of the clay particles is surrounded by a hydration sheath, and on the other it can receive water between its crystalline layers. The substances dissolved in the water — above all the basic ones — are in turn adsorbed by the crystalline boundary surfaces, or can release themselves from this bond in exchange for others. When soil science speaks of adsorption or of the exchange capacity of soils, these parameters refer — alongside humus — above all to the clay minerals. In the light of what was said above, it stands to reason that the winter star-forces influence both the degree of crystalline order in the clay minerals and that of the substances bound to the boundary and interlayer surfaces.