Mudstone

==Mudstone (Also called Mudrock﻿) is a sedimentary rock made from mud or clay. The grains in Mudstones are 0.0625mm (0.0025 in) and they are too small to see through a microscope. Mudstone looks like hardened clay, depending on the circumstances under which it was formed, it could show cracks or fissures. They can be parted into these categories: Siltstone, Claystone and Mudstone.==