During recrystallization, the bonds between atoms in a mineral are broken and can join to form a new, larger, and more stable mineral crystal.

Here's how it works:

* Breaking bonds: Heat and pressure cause the existing mineral crystals to become unstable, breaking the bonds between their atoms.

* Atoms move: The atoms are free to move around within the mineral.

* New bonds form: As the mineral cools and the pressure lessens, the atoms rearrange and form new, stronger bonds.

* Larger crystals: This process often results in larger, more stable crystals, sometimes with different shapes or orientations than the original mineral.

Important Note: Recrystallization is a common geological process and does not necessarily result in a completely different mineral. The chemical composition of the original mineral usually remains the same, although its crystalline structure may change.

For example, a rock made up of small grains of calcite might recrystallize into larger calcite crystals with a more visible structure.