* Sedimentary Rocks: Formed from the accumulation and cementation of sediments (like sand, silt, clay, or fragments of other rocks).

* Slate: Formed from the metamorphism of shale (meaning it was once sedimentary rock).

* Granite: An igneous rock, formed from the cooling and crystallization of magma.

* Pumice: A volcanic rock, also igneous, formed from frothy lava.

Let me know if you have any other rock questions!