Is Granite Intrusive Or Extrusive

From national monuments to kitchen countertops, granite is a natural rock with a multitude of uses. With a diverse appearance and durable performance, it has get a popular selection in homes across the country. But what is granite? And what is meant by the terms intrusive or extrusive? In this blog, we will dive into the limerick of this natural rock and explain if granite is intrusive or extrusive.

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What is Granite?

Before we tin identify intrusive and extrusive characteristics, we must first ascertain granite. Granite is an igneous rock that forms when magma, a molten stone material found secret inside the earth's crust, cools and crystallizes. A multifariousness of rock formations tin can have place depending on existing minerals, subsequent exposure to magma or lava, and the speed at which they absurd.

Granite is largely comprised of feldspar and quartz with small amounts of mica and amphibole. Co-ordinate to petrologists, those who written report rocks and how they course, these proportions may vary, but authentic granite should incorporate 10-50% felsic materials like mica and 65-90% feldspar.

mount rushmore granite — *Mount Rushmore is i of many national monuments made of granite.*

Is Granite Intrusive or Extrusive?

An intrusive stone is formed by magma and cools under the earth's surface at a very slow pace. This allows for large crystals to class, which can create various rocks– including granite. As the magma continues to cool, crystals will merge to form even larger rocks with varied appearances. This is why granite and other intrusive rocks contain various colors.

Unlike intrusive rocks, an extrusive rock is formed by lava to a higher place the earth'due south surface. Lava cools much quicker than magma, resulting in the formation of smaller crystals that are invisible to the eye. Depending on the cooling speed, bubbling may form, which tin can create glass alongside the grain of the stone. Big bubbles inside the glass volition course scoria, small bubbles volition grade obsidian, and microbubbles will form pumice.

Color, temperature, and visible crystals are characteristics that make granite an intrusive igneous stone, and the natural occurrences behind its germination are fascinating. It is a durable material that tin be used in both interior and exterior spaces with a variety of applications to consider.

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