Magmatic differentiation is the term geologists use for the classification and naming of igneous rocks.

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Magmatic differentiation refers to the process by which a single magma can give rise to a variety of different igneous rocks with different compositions and mineral assemblages. It is not the classification and naming of igneous rocks. That is usually based on factors such as texture, mineralogy, and the mode of occurrence.

Magmatic Differentiation Is the Term Geologists Use for the Classification