The size of a mineral crystal tell us about the cooling rate of magma and from which element it is formed.
Factors that affects the size of the crystals is the cooling rate of the magma. If the magma cools very quickly, the crystal which is formed is very small.
While on the other hand, if the magma cools slowly, the crystal formed is in large size so we can conclude that The size of a mineral crystal tell us about the cooling rate of magma and from which element it is formed.
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