Granite rocks are divided into two categories of internal and external igneous rocks based on the formation process. Internal igneous rocks have medium to coarse texture due to gradual cooling, such as: Types of granite and gabbro. Exterior igneous rocks, on the other hand, have a fine or crystalline texture due to the high rate of heat loss in the air, such as: Basalt and rhyolite
Application of granite
Due to the high strength of granite, they are widely used in various parts of the building. Their most important and obvious application is in the entrance part of the building or the paving of public places. In industrial halls, due to the presence of chemicals and acids, they are the best option.