Monday, April 6, 2009

What Kind Of Rock Is Slate

Because of its strength, slate is often used in the home, such as in the construction of the fireplace.


Slate is a stone that is highly resistant to rain, snow and sun. It comes in a variety of colors, including black and green. Characteristics such as these make slate a popular material for applications inside and outside the home. Does this Spark an idea?


Classification


Slate was originally shale, a sedimentary rock. Over time, under extreme heat and pressure, shale changes to slate. Because of this process, geologists classify slate as a low metamorphic rock.


Fossils


Slate is many millions of years old and thus, simple water plant fossils have been found in slate. Rarely occurring, collectors find these specimens valuable.


Mining of Slate


Slate is formed in mountain areas. It is quarried in the United States in Pennsylvania, Maine, Georgia and Vermont. Whales, Italy and Spain are other areas of the world where slate is mined.


Uses


Because slate is sturdy and durable, it has many uses in construction.


Slate can be found in flooring, roofing, paving and other interior decor.


Fun Fact


In the early 1800s, slate was used in chalkboards. It makes an excellent writing material because it is smooth, flat and dark.







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