Is Granite Porous Geology

Even worse germs bacteria and mold can invade unsealed granite counter tops with stains running not far behind.

Is granite porous geology.

What granite means. M type mantle granites are rarer and are thought to have evolved directly from deeper melts in the mantle. Granite ˈ ɡ r æ n ɪ t is a common type of felsic intrusive igneous rock that is granular and phaneritic in texture. And the definition of granite expands wildly when used by people who sell dimension stone such as countertops tile and building veneer.

Granite is a rock with interlocking grains. Sandstone is a rock with rounded grains. An igneous rock that is coarse grained and overall light colored. Strictly speaking granite is an.

If liquid or stains get down into the stone it can result in damages and weakening of your granite. So porous rocks tend to be softer than non porous rocks. Granite has a felsic composition and is more common in recent geologic time in contrast to earth s ultramafic ancient igneous history. In geology granite is one specific thing.

This means that if it is not properly sealed liquid is able to penetrate its surface. In the case of marble which is metamorphic as well as sedimentary porosity can be considerably higher when compared to granite up to 2 percent. Alas its porous surface is granite s kryptonite. Like all natural stone granite is susceptible to liquid sinking into its surface.

Students of granites classify them in three or four categories. Felsic rocks are less dense than mafic and ultramafic rocks and thus they tend to escape subduction whereas basaltic or gabbroic rocks tend to sink into the mantle beneath the granitic rocks of the continental cratons. Any unique combination of chemical composition mineralogy grain size texture or other distinguishing characteristics can describe a rock type. A more precise definition is used by petrologists geologists who specialize in the study of rocks.

The following is a list of rock types recognized by geologists there is no agreed number of specific types of rocks. Other types of rock have rounded grains. Granites can be predominantly white pink or gray in color depending on their mineralogy the word granite comes from the latin granum a grain in reference to the coarse grained structure of such a completely crystalline rock. As previously mentioned granite is of an igneous nature which makes it less porous than sedimentary rocks such as limestone and travertine.

A simple definition is used in introductory courses. But in the parlance of the natural stone industry the definition of granite is expanded to include all igneous rocks as well as many metamorphic rocks like gneiss and schist. Granite is a porous natural stone. Also granite is immune from the damages of most common household acids.