Andesite and Phonolite Types and Facts
Types
Icelandite
  
Kenyte
  
Features
Generally rough to touch, High silica content, Is one of the oldest rock
  
Application of acids on the surface causes cloudy frosting, Available in Lots of Colors and Patterns, Dissolves in hydrochloric acid, Is one of the oldest rock
  
Archaeological Significance
  
  
Monuments
Used
  
Used
  
Famous Monuments
Middle of the Earth in Ecuador
  
Data Not Available
  
Sculpture
Used
  
Used
  
Famous Sculptures
Data Not Available
  
Data Not Available
  
Pictographs
Not Used
  
Used
  
Petroglyphs
Not Used
  
Used
  
Figurines
Used
  
Used
  
Fossils
Absent
  
Absent
  
Types of Andesite and Phonolite
Some rocks according to their use or texture are classified into different types. Know more about Andesite Texture and Phonolite Texture. Types of Andesite are Icelandite whereas the types of Phonolite are Kenyte.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 Phonolite 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 Phonolite was used to create petroglyphs.