A few facts about slate!

Slate is mostly made of clay but the clay can change to mica under extreme degrees of pressure.

The color of slate is largely determined by the amount of iron it contains, but it is normally a shade of grey.

Slate normally forms in basins between convergent plate boundaries.

Slate is used for different varieties of flooring and roofing.

School children used pieces of slate as a writing board to practice their math and writing during the 1800s.

Slate can easily be broken into neat, thin sheet because of its foliation.

The majority of mined slate is used for roofing because it does not absorb a lot of water and can withstand freezing air.

Chalk boards are made of slate and chalk is made of limestone, another type of rock.

Slate has a wet-like appearance when exposed to the sun.

Slate is produced worldwide but the best slate is said to come from certain countries such as Brazil and the United Kingdom.

Slate can be found in various places such as on the sides of cliffs, underground, and in pits.

Slate normally is formed from a sedimentary rock.

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