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Banded iron formation
Banded iron formation

Porphyry
Porphyry



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Porphyry

Banded iron formation and Porphyry Types and Facts

1 Types
1.1 Types
Algoma-type , Lake Superior-type, Superior-type and Taconite
Rhomb Porphyry
1.2 Features
Is one of the oldest rock
Generally rough to touch, Is one of the oldest rock, Surfaces are often shiny
1.3 Archaeological Significance
1.3.1 Monuments
Not Yet Used
Used
1.3.2 Famous Monuments
Not Applicable
Data Not Available
1.3.3 Sculpture
Not Yet Used
Used
1.3.4 Famous Sculptures
Not Applicable
Data Not Available
1.3.5 Pictographs
Not Used
Not Used
1.3.6 Petroglyphs
Not Used
Not Used
1.3.7 Figurines
Not Yet Used
Used
1.4 Fossils
Present
Absent

Types of Banded iron formation and Porphyry

Some rocks according to their use or texture are classified into different types. Know more about Banded iron formation Texture and Porphyry Texture. Types of Banded iron formation are Algoma-type , Lake Superior-type, Superior-type and Taconite 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. Banded iron formation and Porphyry were not used for creating 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. Banded iron formation and Porphyry were not used for creating petroglyphs.