Here's why:
* Fractional crystallization describes the process where a magma (molten rock) cools and different minerals crystallize out at specific temperatures. This leaves behind a magma that is enriched in the elements that were not incorporated into the minerals that crystallized first.
* Melting point refers to the specific temperature at which a substance transitions from solid to liquid. Each mineral has its own unique melting point.
* Partial melting is the process where only some minerals in a rock melt, leaving behind a residue of unmelted minerals. This occurs because different minerals have different melting points.
So, the phrase "different minerals melt at different temperatures" is directly tied to the concept of fractional crystallization and partial melting.
