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For Geogoly Tutor. Minerals and rocks again. ) Coal,

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For Geogoly Tutor.

Minerals and rocks again. :)

Coal, which forms from decaying vegatation and is, therefore, a natural substance, is not considere to be a mineral. However, when coal is heated to high temperatures and buried in high-pressure areas, it transforms into the mineral graphite. Why is it, then, that coal is not considered a mineral but graphite is? Explain your reasoning.

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