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What is Chalk?

calcite chalk Limestone Mineral sedimentary rock soft rock
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What is Chalk?

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Chalk is a form of limestone which is distinguished by its relative purity and close, fine grain. Humans have been utilizing chalk for a variety of tasks for centuries, taking advantage of its properties for things like writing on blackboards, marking out fabric patterns for cutting, and delineating game fields in sports like tennis and American football. This mineral is extremely abundant, and it is widely quarried all over the world.

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