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Nepheline Syenite and Shonkinite Definition


Shonkinite and Nepheline Syenite Definition


Definition

Definition
Nepheline Syenite is a holocrystalline plutonic rock resembling syenite but containing nepheline and lacking quartz   
Shonkinite is a rare, dark-coloured and intrusive igneous rock which contains augite and orthoclase feldspar as its primary constituents   

History
  
  

Origin
Unknown   
USA   

Discoverer
Unknown   
Unknown   

Etymology
From origin of a Palaeozoic nepheline syenite from northern Shanxi Province, China   
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, Medium Hardness 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 >>
<< Summary

Definition of Nepheline Syenite and Shonkinite

The general Nepheline Syenite and Shonkinite definition can be stated as: Nepheline Syenite is a holocrystalline plutonic rock resembling syenite but containing nepheline and lacking quartz. 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 Nepheline Syenite and Shonkinite, get to know about Properties of Nepheline Syenite and Shonkinite. Get to know more information about Nepheline Syenite and Shonkinite origin and discoverer, etymology and class.

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History of Nepheline Syenite and Shonkinite

The history of Nepheline Syenite 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.

Nepheline Syenite and Shonkinite Origin and Discoverer

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

Etymology of Nepheline Syenite and Shonkinite

Along with Nepheline Syenite and Shonkinite definition, know more about the etymology of Nepheline Syenite and Shonkinite. Etymology of Nepheline Syenite and Shonkinite gives information about origin and formation of a particular rock. Know more about Formation of Nepheline Syenite and Formation of Shonkinite. The etymology of Nepheline Syenite is From origin of a Palaeozoic nepheline syenite from northern Shanxi Province, China while that of Shonkinite is From origin of a Palaeozoic nepheline syenite from northern Shanxi Province, China. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Nepheline Syenite and Shonkinite belong to Igneous Rocks. The sub-class, group and other categories of Nepheline Syenite and Shonkinite are listed below.

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