It seems you're asking about malleable rocks, but that's not a standard term in geology. Rocks are generally considered rigid and brittle, meaning they break rather than bend. However, there are some aspects of rock behavior that might relate to what you're thinking of:

* Deformation: Rocks can deform under extreme pressure, heat, and stress over long periods. This deformation can be:

* Elastic: The rock returns to its original shape when the pressure is released (think of a rubber band).

* Ductile: The rock permanently changes shape without breaking, stretching or flowing like taffy (think of bending a metal wire).

* Brittle: The rock fractures or breaks under pressure.

* Metamorphic Rocks: Rocks that have been transformed by heat and pressure can exhibit ductile behavior. They are not malleable in the sense of being molded by hand, but their structure can be significantly altered. Examples include:

* Schist: A metamorphic rock with a layered structure, formed by intense pressure.

* Gneiss: A metamorphic rock with a banded appearance, formed by high heat and pressure.

Therefore, there aren't "malleable rocks" in the traditional sense. However, rocks can exhibit ductile behavior under extreme conditions, resulting in significant changes in their shape and structure.

Let me know if you have other questions!