Impregnation (geology)

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As impregnation (. To lat impraegnare "pregnant", here in a figurative sense: steep) is referred to in the geology and economic geology , the diffuse distribution of infiltrated agents in the rock, where structural cavities of various types and sizes are met, the finest cracks and crevices to to open crevices , but also on the contact surfaces of crystals or rock fragments and in the pore space between sediment grains. The term can be found in Bernhard von Cotta as early as 1866 .

As a rule, the substances that have penetrated are mineral-containing solutions from which small ore particles precipitate within the solid bedrock without sharp delimitation or crystal form. A fine “vein network” often forms, for example in igneous impregnation and multi-storey deposits such as porphyry copper deposits . But oil deposits are also regarded as impregnations.