Why Would Granite Have Larger Crystals Than Igneous Rocks

Because crystals in granite had more time to form as the magma cooled slowly.

Why would granite have larger crystals than igneous rocks.

Why would granite have larger crystals than igneous rocks formed from lava cooled above earth s surface. Igneous rocks can have many different compositions depending on the magma they cool from. It depends on the type of igneous rock. The large grains are called phenocrysts and rock with phenocrysts is called a porphyry that is it has a porphyritic texture.

The crystals in granite being intrusive in nature will be larger than those in basalt an extrusive igneous rock. Why would granite have larger crystals than igneous rocks formed from lava. I think igneous rock have a larger crystal than all the others because igneous rock is all the way at the bottom of. Igneous rocks form when magma molten rock cools and crystallizes either at volcanoes on the surface of the earth or while the melted rock is still inside the crust.

The crystals in granite being intrusive in nature will be larger than those in basalt an extrusive igneous rock. Because crystals in granite had more time to form as the magma cooled slowly. All magma develops underground in the lower crust or upper mantle because of the intense heat there. Phenocrysts are minerals that solidified earlier than the rest of the rock and they are important clues to the rock s history.

Crystals that form on the surface are tiny because they cooled very quickly. Intrusive igneous rocks have cooled slowly from magma extrusive rocks have. In many igneous rocks large mineral crystals float in a fine grained groundmass. Intrusive igneous rocks have cooled slowly from magma extrusive rocks have.