Q:

What are granite and gabbro?

A:

Quick Answer

Granite and gabbro are igneous rocks formed through the cooling and crystallization of magma in the Earth's crust. They are identified by their specific mineral content and composition.

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Full Answer

Granite is typically lightly-colored and has a high quartz and feldspar content, as well as smaller amounts of mica and other trace minerals. It has a coarse grain with highly visible minerals and is commonly found in the continental crust. Gabbro is a dark-colored rock formed from basaltic lava in the oceanic crust. It is composed primarily of plagioclase feldspar and may contain minerals, such as amphibole or pyroxene. The minerals found in gabbro typically form large grains during the cooling process.

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Related Questions

  • 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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  • 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:

    Which igneous rocks are coarse grained due to slow cooling?

    A:

    Granite and basalt are excellent examples of coarsely grained igneous rocks. The coarseness of such igneous rocks is a result of magma becoming trapped beneath sediment and stone, which allows the liquid to cool at a slower rate.

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  • Q:

    What kind of rock is granite?

    A:

    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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