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Hornfels and Porphyry Types and Facts


Porphyry and Hornfels Types and Facts


Types

Types
Biotite hornfels   
Rhomb Porphyry   

Features
Smooth to touch   
Generally rough to touch, Is one of the oldest rock, Surfaces are often shiny   

Archaeological Significance
  
  

Monuments
Used   
Used   

Famous Monuments
Data Not Available   
Data Not Available   

Sculpture
Not Yet Used   
Used   

Famous Sculptures
Not Applicable   
Data Not Available   

Pictographs
Used   
Not Used   

Petroglyphs
Used   
Not Used   

Figurines
Not Yet Used   
Used   

Fossils
Absent   
Absent   

Formation >>
<< Uses

Types of Hornfels and Porphyry

Some rocks according to their use or texture are classified into different types. Know more about Hornfels Texture and Porphyry Texture. Types of Hornfels are Biotite hornfels whereas the types of Porphyry are Rhomb Porphyry.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. Hornfels was used to create pictographs whereas Porphyry is not 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. Hornfels was used to create petroglyphs whereas Porphyry was not used to create petroglyphs.

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