Lignite and Comendite Types and Facts
Types
Xyloid Lignite or Fossil Wood and Compact Lignite or Perfect Lignite
Rhyolite
Features
Generally rough to touch, Helps in production of Heat and Electricity, Used as fossil fuel
Very fine grained rock, It is One of the Oldest, Strongest and Hardest Rock
Archaeological Significance
Monuments
Not Yet Used
Not Yet Used
Famous Monuments
Not Applicable
Not Applicable
Sculpture
Not Yet Used
Not Yet Used
Famous Sculptures
Not Applicable
Not Applicable
Pictographs
Used
Not Used
Petroglyphs
Used
Not Used
Figurines
Not Yet Used
Not Yet Used
Types of Lignite and Comendite
Some rocks according to their use or texture are classified into different types. Know more about Lignite Texture and Comendite Texture. Types of Lignite are Xyloid Lignite or Fossil Wood and Compact Lignite or Perfect Lignite whereas the types of Comendite are Rhyolite.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. Lignite was used to create pictographs whereas Comendite is not 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. Lignite was used to create petroglyphs whereas Comendite was not used to create petroglyphs.