The type of rock that forms from the recrystallization of existing rocks is metamorphic rock.

Here's why:

* Metamorphism is the process where existing rocks (igneous, sedimentary, or even other metamorphic rocks) are transformed by heat, pressure, or chemically active fluids.

* This transformation doesn't melt the rock completely, but causes the minerals within it to change their structure and arrangement.

* The recrystallization process leads to the formation of new minerals or larger crystals, creating a new rock texture.

Examples of metamorphic rocks:

* Marble - Formed from the recrystallization of limestone.

* Slate - Formed from the metamorphism of shale.

* Gneiss - Formed from the metamorphism of granite.

Let me know if you have any other questions about rocks!