| Granite is igneous rock. It is light in
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| | Where Granite is Found
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| color, but the grain can be medium or
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| | Granite is found on every continent of
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| coarse. The rock is composed mainly of
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| | the earth, especially in places where the
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| alkali feldspar and quartz and is easily
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| | earth has been worn away by erosion. It
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| recognizable by the visible grains of the
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| | often forms the core of mountains that
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| various dark minerals. Granite rocks are
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| | forceful pressures within the earth have
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| the most common of all crystalline rocks
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| | pushed upward. Sometimes bodies of
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| found on the surface of the earth. They
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| | granite are found in large outcroppings
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| are found all over the world, usually in
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| | of rocks that are found in chimney like
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| great masses called batholiths that often
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| | and overhanging rock formations. The
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| extend over thousands of miles. This is a
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| | Appalachian Mountain range in the United
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| popular material form use in monuments
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| | States is composed mostly of granite. It
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| and buildings because of its hardness,
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| | is also found in the Ozark Mountains, the
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| durability and the range of colors.
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| | Black Hills, and the front range of the
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| Composition of Granite
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| | Rocky Mountains. Granite is also produced
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| Granite is composed mainly of potash,
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| | in many states such as Georgia,
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| feldspar and quartz. The color of the
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| | California, Virginia, Minnesota, South
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| rock varies from gray to red and is
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| | Dakota and the Carolinas.
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| usually determined by the amount of the
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| | How Granite is Formed
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| potash feldspar. If there is a lot of
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| | Geologists have two different theories
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| glassy crystals in granite, it will tend
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| | about how granite was formed. One theory
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| to have a bluish color. Dark minerals,
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| | says that granite formed directly from
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| such as hornblende, biotite mica and
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| | molten lava. The other theory states that
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| muscovite mica can sometimes be found in
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| | it was formed as a result of the
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| granite. Some types of rock that are
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| | alterations of other rocks and that
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| commonly called granite contain different
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| | granite is metamorphic rock, rather than
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| amounts of plagioclase feldspar. Rocks
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| | igneous rock.
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| that contain about one-fifth of the
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| | Uses of Granite
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| amount of potash feldspar relative to the
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| | Granite has been used a building material
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| amount of plagioclase feldspar is really
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| | for thousands of years. In ancient Egypt,
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| granodiorite, rather than granite. Rocks
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| | the obelisks were built from granite.
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| that have the same composition as
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| | Today, granite is used in building
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| granite, but have a very large amount of
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| | monuments, curbs for roads, tombstones,
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| crystals are known as pegmatite.
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| | and as a structural element in buildings.
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