fractional crystallization

(petrology) Separation of a cooling magma into multiple minerals as the different minerals cool and congeal at progressively lower temperatures. Also known as crystallization differentiation; fractionation.

Fractional crystallization may refer to:

• Fractional crystallization (chemistry), a process to separate different solutes from a solution
• Fractional crystallization (geology), a natural process occurring in igneous rocks during which precipitation of minerals takes place

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