Question

How is slate formed? What is its use?
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Answer 1

Answer:

Slate is a fine-grained, foliated, homogeneous metamorphic rock derived from an original shale-type sedimentary rock composed of clay or volcanic ash through low-grade regional metamorphism. ... It is caused by strong compression causing fine grained clay flakes to regrow in planes perpendicular to the compression.

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Answer 2

Answer:

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Slate is a fine-grained, foliated, homogeneous metamorphic rock derived from an original shale-type sedimentary rock composed of clay or volcanic ash through low-grade regional metamorphism. It is caused by strong compression causing fine grained clay flakes to regrow in planes perpendicular to the compression.