Oil shale and Rhomb Porphyry Types and Facts
Types
Carbonate-rich Shale, Siliceous Shale and Cannel Shale
  
Not Available
  
Features
Easily splits into thin plates, Generally rough to touch, Is one of the oldest rock, Very fine grained rock
  
Host Rock for Lead
  
Archaeological Significance
  
  
Monuments
Not Yet Used
  
Used
  
Famous Monuments
Not Applicable
  
Data Not Available
  
Sculpture
Not Yet Used
  
Used
  
Famous Sculptures
Not Applicable
  
Data Not Available
  
Pictographs
Not Used
  
Used
  
Petroglyphs
Not Used
  
Used
  
Figurines
Not Yet Used
  
Used
  
Fossils
Present
  
Absent
  
Types of Oil shale and Rhomb Porphyry
Some rocks according to their use or texture are classified into different types. Know more about Oil shale Texture and Rhomb Porphyry Texture. Types of Oil shale are Carbonate-rich Shale, Siliceous Shale and Cannel Shale whereas the types of Rhomb Porphyry are Not Available.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. Oil shale was not used to create pictographs whereas Rhomb Porphyry 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. Oil shale was not used to create petroglyphs whereas Rhomb Porphyry was used to create petroglyphs.