Granite is the best-known igneous rock. Many people recognize granite because it is the most common igneous rock found on Earth’s surface and because granite is used to make many objects that they encounter in daily life. These include countertops, floor tiles, paving stones, curbing, stair treads, building veneer, and cemetery monuments. Granite is used all around us – especially if you live in a large modern city.
Granite is a light-colored igneous rock with grains large enough to be visible to the unaided eye. It forms from the slow crystallization of magma below the Earth’s surface.
Granite is composed mainly of quartz and feldspar with minor amounts of mica, amphiboles, and other minerals. This mineral composition usually gives granite a red, pink, gray, or white color with dark mineral grains visible throughout the rock.Granite is a coarse-grained intrusive igneous rock composed mostly of quartz, alkali feldspar, and plagioclase. It forms from magma with a high content of silica and alkali metal oxides that slowly cools and solidifies underground.