Lignite and Shale Types and Facts
Types
Xyloid Lignite or Fossil Wood and Compact Lignite or Perfect Lignite
Red Shale, Black Shale, Green Shale, Grey Shale and Yellow Shale
Features
Generally rough to touch, Helps in production of Heat and Electricity, Used as fossil fuel
Easily splits into thin plates, Generally rough to touch, Very fine grained rock
Archaeological Significance
Monuments
Not Yet Used
Used
Famous Monuments
Not Applicable
Jantar Mantar in India
Sculpture
Not Yet Used
Used
Famous Sculptures
Not Applicable
Data Not Available
Figurines
Not Yet Used
Used
Types of Lignite and Shale
Some rocks according to their use or texture are classified into different types. Know more about Lignite Texture and Shale Texture. Types of Lignite are Xyloid Lignite or Fossil Wood and Compact Lignite or Perfect Lignite whereas the types of Shale are Red Shale, Black Shale, Green Shale, Grey Shale and Yellow Shale.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 Shale 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 Shale were used for creating petroglyphs.