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How Is Granite Formed
- Aug 01, 2017 -

Originally, granite is formed after volcanic eruption. Under considerable pressure, the lava is molten and uplifted to the surface of the crust, forming into a kind of tectonic rock. In the formation of the crust surface, the lava moves slowly across the crust surface and gradually gets cool down. Finally, granite is formed. 


As a kind of igneous rock, granite is formed by cooling and solidifying crystallization of magma or lava containing silicate (Silicate) melts. When molten magma is frozen and solidified, minerals are formed into igneous rocks, such as olivine and pyroxene. The mafic silicate minerals with the biggest density are formed in high temperature, while minerals with smallest density, like feldspar and quartz, are formed in the cooling period. The kind of mineral formed in lava, usually grows freely and can be well-developed into crystal shape.