Anorthosite and Nepheline Syenite Types and Facts
Types
Proterozoic Anorthosite and Archean Anorthosite
Borolanite and Litchfieldite
Features
Generally rough to touch, 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
Not Yet Used
Used
Famous Monuments
Not Applicable
Data Not Available
Famous Sculptures
Not Applicable
Data Not Available
Pictographs
Not Used
Used
Petroglyphs
Not Used
Used
Types of Anorthosite and Nepheline Syenite
Some rocks according to their use or texture are classified into different types. Know more about Anorthosite Texture and Nepheline Syenite Texture. Types of Anorthosite are Proterozoic Anorthosite and Archean Anorthosite whereas the types of Nepheline Syenite are Borolanite and Litchfieldite.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. Anorthosite was not used to create pictographs whereas Nepheline Syenite 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. Anorthosite was not used to create petroglyphs whereas Nepheline Syenite was used to create petroglyphs.