2 relations: Metamorphism, Metasomatism.
Metamorphism
Metamorphism is the change of minerals or geologic texture (distinct arrangement of minerals) in pre-existing rocks (protoliths), without the protolith melting into liquid magma (a solid-state change).
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Metasomatism
Metasomatism is the chemical alteration of a rock by hydrothermal and other fluids.
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