👉 Vermiculosity, also known as a microcline or an irregularity in the shape of rocks and minerals, is a feature found on rocks that can be caused by physical processes such as weathering. It is characterized by the formation of tiny ridges and valleys in the rock structure, which are usually more prominent at the surface but may extend deeper within the rock. These ridges and valleys are often associated with erosion or weathering processes, and they can vary in size and shape depending on