What Three Minerals Are Found In Granite

Learn more about the properties and uses of granite in this article.

What three minerals are found in granite. Approximately 80 percent of this igneous rock is made up of these two minerals the other minerals found in granite are mica and amphibole. The black grains can be biotite or hornblende. Other common minerals include mica muscovite and biotite and hornblende see amphibole. Color variation is a response to the percent of each mineral found in the sample.

Granite is high in quartz about 25 feldspar and mica. These minerals make up more than 80 of the rock. The grain size is coarse enough to allow recognition of the major minerals. Granite s mineral composition is mainly quartz and feldspar.

The pink grains are orthoclase feldspar and the clear to smoky grains are quartz or muscovite. It is mainly composed of quartz and feldspar although it may contain smaller amounts of other minerals such as mica and amphibole. Granite is a light colored plutonic rock found throughout the continental crust most commonly in mountainous areas. Granite is an igneous rock of plutonic origin meaning it formed beneath the surface rather than above ground.

The specimen above is a typical granite. Numerous other minerals can be present in granite. Granite coarse or medium grained intrusive igneous rock that is rich in quartz and feldspar. It consists of coarse grains of quartz 10 50 potassium feldspar and sodium feldspar.