Pyrolite and Slate Types and Facts
Types
Dunite, Wehrlite, Harzburgite, Lherzolite
Phyllite, Schist, and Slate
Features
Constitutes upper part of the Earth's mantle, Generally rough to touch, Is one of the oldest rock
Easily splits into thin plates, Surfaces are often shiny, Very fine grained rock
Archaeological Significance
Types of Pyrolite and Slate
Some rocks according to their use or texture are classified into different types. Know more about Pyrolite Texture and Slate Texture. Types of Pyrolite are Dunite, Wehrlite, Harzburgite, Lherzolite whereas the types of Slate are Phyllite, Schist, and Slate.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. Pyrolite and Slate 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. Pyrolite and Slate were for creating petroglyphs.