Andesite and Gossan Types and Facts
Types
Icelandite
Translocated gossan and Leakage gossan
Features
Generally rough to touch, High silica content, Is one of the oldest rock
Clasts are smooth to touch, Easily splits into thin plates
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 Gossan
Some rocks according to their use or texture are classified into different types. Know more about Andesite Texture and Gossan Texture. Types of Andesite are Icelandite whereas the types of Gossan are Translocated gossan and Leakage gossan.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 Gossan 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 Gossan was used to create petroglyphs.