grovkorniga

Grovkorniga is a Swedish adjective used to describe a texture or microstructure characterized by relatively large grains or crystals that are visible to the naked eye. It is commonly applied in geology and materials science to indicate a coarse-grained texture, in contrast to a fine-grained one.

Etymology and usage: the term combines grov- meaning coarse and korn meaning grain, with the adjectival ending -iga. It is used to classify textures in rocks and manufactured materials.

In geology, grovkorniga rocks have mineral grains ranging from millimeters up to several millimeters or larger. This texture typically results from slow cooling of magma beneath the surface, producing intrusive igneous rocks such as granite, diorite and granodiorite. Metamorphic rocks can also exhibit grovkorniga textures when recrystallization forms large grains under suitable pressure and temperature conditions.

In materials science, grovkorniga describes metals and ceramics with comparatively large grain sizes. Grain size influences mechanical properties: coarse grains can increase toughness and ductility but may reduce yield strength relative to finer-grained materials; at high temperatures, larger grains can improve creep resistance and thermal stability depending on the material system.

See also: fine-grained, grain size, texture, granitoids.