Lignite and Trachyandesite Types and Facts
Types
Xyloid Lignite or Fossil Wood and Compact Lignite or Perfect Lignite
  
Basaltic Trachyandesite
  
Features
Generally rough to touch, Helps in production of Heat and Electricity, Used as fossil fuel
  
Has High structural resistance against erosion and climate, Very fine grained rock
  
Archaeological Significance
  
  
Monuments
Not Yet Used
  
Not Yet Used
  
Famous Monuments
Not Applicable
  
Not Applicable
  
Sculpture
Not Yet Used
  
Used
  
Famous Sculptures
Not Applicable
  
Data Not Available
  
Pictographs
Used
  
Used
  
Petroglyphs
Used
  
Used
  
Figurines
Not Yet Used
  
Used
  
Fossils
Present
  
Absent
  
Types of Lignite and Trachyandesite
Some rocks according to their use or texture are classified into different types. Know more about Lignite Texture and Trachyandesite Texture. Types of Lignite are Xyloid Lignite or Fossil Wood and Compact Lignite or Perfect Lignite whereas the types of Trachyandesite are Basaltic Trachyandesite.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 and Trachyandesite were used 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. Lignite and Trachyandesite were used for creating petroglyphs.