Phyllite and Websterite Types and Facts
Types
Phyllite
Ultramafic rock
Features
Easily splits into thin plates, Is one of the oldest rock, Surfaces are often shiny
Generally rough to touch, Is one of the oldest rock
Archaeological Significance
Types of Phyllite and Websterite
Some rocks according to their use or texture are classified into different types. Know more about Phyllite Texture and Websterite Texture. Types of Phyllite are Phyllite whereas the types of Websterite are Ultramafic rock.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. Phyllite and Websterite 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. Phyllite and Websterite were for creating petroglyphs.