Mudstone and Hornblendite Types and Facts

Types of Mudstone and Hornblendite

Some rocks according to their use or texture are classified into different types. Know more about Mudstone Texture and Hornblendite Texture. Types of Mudstone are Marl, Shale and Argillite whereas the types of Hornblendite are Hornblende Gabbro and Hornblende Peridotite.During historic times, some rocks depending on their hardness were used to create Pictographs and Petroglyphs. Rocks which are hard were generally not used. Pictographs are paintings or drawings that have been placed or created on the surface of rock. Mudstone and Hornblendite were for creating pictographs. Petroglyph is an image which is carved into a rock. These are images created by removing part of a rock surface by incising, picking, carving or abrading, as a form of rock art. Mudstone and Hornblendite were for creating petroglyphs.