Andesite and Anthracite Types and Facts
Types
Icelandite
Semi-anthracite and Meta-anthracite
Features
Generally rough to touch, High silica content, Is one of the oldest rock
Helps in production of Heat and Electricity, Used as fossil fuel
Archaeological Significance
Monuments
Used
Not Yet Used
Famous Monuments
Middle of the Earth in Ecuador
Not Applicable
Sculpture
Used
Not Yet Used
Famous Sculptures
Data Not Available
Not Applicable
Pictographs
Not Used
Used
Petroglyphs
Not Used
Used
Figurines
Used
Not Yet Used
Types of Andesite and Anthracite
Some rocks according to their use or texture are classified into different types. Know more about Andesite Texture and Anthracite Texture. Types of Andesite are Icelandite whereas the types of Anthracite are Semi-anthracite and Meta-anthracite.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. Andesite was not used to create pictographs whereas Anthracite is 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. Andesite was not used to create petroglyphs whereas Anthracite was used to create petroglyphs.