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Shonkinite and Essexite  Definition


Essexite  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   
Essexite which is also known as nepheline monzogabbro, is a dark gray or black holocrystalline plutonic Iigneous Rock   

History
  
  

Origin
USA   
USA   

Discoverer
Unknown   
Unknown   

Etymology
From the name of Shonkin Sag ranges in the Highwood Mountains of north-central Montana, US   
From the locality in Essex County, Massachusetts,US   

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   

Texture >>
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Definition of Shonkinite and Essexite 

The general Shonkinite and Essexite  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, Essexite which is also known as nepheline monzogabbro, is a dark gray or black holocrystalline plutonic Iigneous Rock. Along with definition of Shonkinite and Essexite , get to know about Properties of Shonkinite and Essexite . Get to know more information about Shonkinite and Essexite  origin and discoverer, etymology and class.

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History of Shonkinite and Essexite 

The history of Shonkinite and Essexite  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 Essexite  Origin and Discoverer

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

Etymology of Shonkinite and Essexite 

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

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