Some rocks according to their use or texture are classified into different types. Know more about Mangerite Texture and Ijolite Texture. The types of Mangerite and Ijolite are Not Available.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. Mangerite was not used to create pictographs whereas Ijolite is used to create 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. Mangerite was not used to create petroglyphs whereas Ijolite was used to create petroglyphs.