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Anthracite and Porphyry Definition


Porphyry and Anthracite Definition


Definition

Definition
Anthracite is a type of sedimentary rock which is hard and is variety of coal that has high luster   
Porphyry is a reddish-brown to purple igneous rock containing large phenocrysts of various minerals embedded in a fine-grained matrix   

History
  
  

Origin
Pennsylvania, U.S.   
Egypt   

Discoverer
Unknown   
Unknown   

Etymology
From Greek anthrakites, from anthrax, anthrak meaning coal   
From Old French porfire, from Italian porfiro and in some cases directly from Latin porphyrites   

Class
Metamorphic Rocks   
Igneous Rocks   

Sub-Class
Durable Rock, Soft Rock   
Durable Rock, Hard Rock   

Family
  
  

Group
Not Applicable   
Plutonic   

Other Categories
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock   
Fine Grained Rock, Opaque Rock   

Texture >>
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Definition of Anthracite and Porphyry

The general Anthracite and Porphyry definition can be stated as: Anthracite is a type of sedimentary rock which is hard and is variety of coal that has high luster. On the other hand, Porphyry is a reddish-brown to purple igneous rock containing large phenocrysts of various minerals embedded in a fine-grained matrix. Along with definition of Anthracite and Porphyry, get to know about Properties of Anthracite and Porphyry. Get to know more information about Anthracite and Porphyry origin and discoverer, etymology and class.

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History of Anthracite and Porphyry

The history of Anthracite and Porphyry gives information about where the rock was found and who was its discoverer. Almost each and every aspect of Earth's history is recorded in rocks be it the volcanoes which were erupted or the plants, animals and organisms which are now extinct, as rocks are present from millions of years.

Anthracite and Porphyry Origin and Discoverer

Anthracite and Porphyry definition gives us a brief idea about the two rocks. In some cases, the definition also gives summary about the Formation of Anthracite and Porphyry. In this section, you will know about Anthracite and Porphyry Origin and Discoverer. Origin of Anthracite is Pennsylvania, U.S. whereas Origin of Porphyry is Egypt. It is interesting to know the name of Anthracite and Porphyry discoverer. The discoverer of Anthracite and Porphyry are Unknown.

Etymology of Anthracite and Porphyry

Along with Anthracite and Porphyry definition, know more about the etymology of Anthracite and Porphyry. Etymology of Anthracite and Porphyry gives information about origin and formation of a particular rock. Know more about Formation of Anthracite and Formation of Porphyry. The etymology of Anthracite is From Greek anthrakites, from anthrax, anthrak meaning coal while that of Porphyry is From Greek anthrakites, from anthrax, anthrak meaning coal. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Anthracite belongs to Metamorphic Rocks while Porphyry belongs to Igneous Rocks. The sub-class, group and other categories of Anthracite and Porphyry are listed below.

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