Anthracite and Porphyry Types and Facts

Anthracite

Porphyry

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1 Types

1.1 Types

Semi-anthracite and Meta-anthracite

Rhomb Porphyry

1.2 Features

Helps in production of Heat and Electricity, Used as fossil fuel

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

Used

Not Used

1.3.6 Petroglyphs

Used

Not Used

1.3.7 Figurines

Not Yet Used

Used

1.4 Fossils

Absent

Types of Anthracite and Porphyry

Some rocks according to their use or texture are classified into different types. Know more about Anthracite Texture and Porphyry Texture. Types of Anthracite are Semi-anthracite and Meta-anthracite 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. Anthracite 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. Anthracite was used to create petroglyphs whereas Porphyry was not used to create petroglyphs.