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Porphyry and Shonkinite Definition


Shonkinite and Porphyry Definition


Definition

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

History
  
  

Origin
Egypt   
USA   

Discoverer
Unknown   
Unknown   

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

Class
Igneous Rocks   
Igneous Rocks   

Sub-Class
Durable Rock, Hard Rock   
Durable Rock, Medium Hardness Rock   

Family
  
  

Group
Plutonic   
Not Applicable   

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

Texture >>
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Definition of Porphyry and Shonkinite

The general Porphyry and Shonkinite definition can be stated as: Porphyry is a reddish-brown to purple igneous rock containing large phenocrysts of various minerals embedded in a fine-grained matrix. On the other hand, Shonkinite is a rare, dark-coloured and intrusive igneous rock which contains augite and orthoclase feldspar as its primary constituents. Along with definition of Porphyry and Shonkinite, get to know about Properties of Porphyry and Shonkinite. Get to know more information about Porphyry and Shonkinite origin and discoverer, etymology and class.

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History of Porphyry and Shonkinite

The history of Porphyry and Shonkinite 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.

Porphyry and Shonkinite Origin and Discoverer

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

Etymology of Porphyry and Shonkinite

Along with Porphyry and Shonkinite definition, know more about the etymology of Porphyry and Shonkinite. Etymology of Porphyry and Shonkinite gives information about origin and formation of a particular rock. Know more about Formation of Porphyry and Formation of Shonkinite. The etymology of Porphyry is From Old French porfire, from Italian porfiro and in some cases directly from Latin porphyrites while that of Shonkinite is From Old French porfire, from Italian porfiro and in some cases directly from Latin porphyrites. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Porphyry and Shonkinite belong to Igneous Rocks. The sub-class, group and other categories of Porphyry and Shonkinite are listed below.

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