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What kind of rock is granite?

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Quick Answer

Granite is a type of intrusive igneous rock comprised primarily of quartz and feldspar. When magma cools and hardens below the Earth's surface, the resulting rock is called an intrusive igneous. When this phenomenon happens on the Earth's surface, the rock is classified as extrusive igneous.

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Full Answer

Usually gray or pinkish in color with a medium or coarse texture, granite is one of the most common rocks in the Earth's crust. It can be found in masses of up to hundreds of square miles in area in some places. Granite's hardness makes it useful in construction, and many quarries are scattered throughout Europe, Southern Africa, Brazil and India. There is some evidence that not all granite, however, is igneous rock, but that some is actually metamorphic.

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Related Questions

  • Q:

    How is granite formed?

    A:

    Granite is an igneous rock that forms when a pocket of magma rises into the upper levels of the Earth's crust and slowly cools. Cooling slowly gives granite, which is composed mainly of feldspar and quartz, enough time to develop large crystals that make the stone very hard and strong. Some granite, known as gneiss, can form from sedimentary rock that has gone through a long metamorphosis.

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  • Q:

    What is granite made of?

    A:

    Granite is a large-grained igneous rock usually comprised of minerals like feldspar, quartz, mica and amphibole. It varies in color and appearance based on the mineral composition of the rock layers near where it is located. Granite, an igneous rock, is formed by magma cooling beneath the surface.

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  • Q:

    What is granite used for?

    A:

    Granite is one of the strongest, most durable and attractive stones, making it versatile and favorable for various architectural and artistic applications. Granite stone is used in monuments, paving, bridges, buildings and several other exterior projects. In interior projects, polished granite tiles and slabs are used for stair treads, tile floors and countertops.

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  • Q:

    What are all of the uses for granite?

    A:

    Granite is one of the strongest, most attractive rocks naturally produced, which makes it valuable to builders and homeowners for a number of interior and exterior applications. Granite is used in projects to provide elegance and quality.

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