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Shonkinite and Porphyry Definition


Porphyry and Shonkinite Definition


Definition

Definition
Shonkinite is a rare, dark-coloured and intrusive igneous rock which contains augite and orthoclase feldspar as its primary constituents   
Porphyry is a reddish-brown to purple igneous rock containing large phenocrysts of various minerals embedded in a fine-grained matrix   

History
  
  

Origin
USA   
Egypt   

Discoverer
Unknown   
Unknown   

Etymology
From the name of Shonkin Sag ranges in the Highwood Mountains of north-central Montana, US   
From Old French porfire, from Italian porfiro and in some cases directly from Latin porphyrites   

Class
Igneous Rocks   
Igneous Rocks   

Sub-Class
Durable Rock, Medium Hardness 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   

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Definition of Shonkinite and Porphyry

The general Shonkinite and Porphyry definition can be stated as: Shonkinite is a rare, dark-coloured and intrusive igneous rock which contains augite and orthoclase feldspar as its primary constituents. 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 Shonkinite and Porphyry, get to know about Properties of Shonkinite and Porphyry. Get to know more information about Shonkinite and Porphyry origin and discoverer, etymology and class.

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History of Shonkinite and Porphyry

The history of Shonkinite 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.

Shonkinite and Porphyry Origin and Discoverer

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

Etymology of Shonkinite and Porphyry

Along with Shonkinite and Porphyry definition, know more about the etymology of Shonkinite and Porphyry. Etymology of Shonkinite and Porphyry gives information about origin and formation of a particular rock. Know more about Formation of Shonkinite and Formation of Porphyry. The etymology of Shonkinite is From the name of Shonkin Sag ranges in the Highwood Mountains of north-central Montana, US while that of Porphyry is From the name of Shonkin Sag ranges in the Highwood Mountains of north-central Montana, US. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Shonkinite and Porphyry belong to Igneous Rocks. The sub-class, group and other categories of Shonkinite and Porphyry are listed below.

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