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Teschenite and Nephelinite Definition


Nephelinite and Teschenite Definition


Definition

Definition
Teschenite is coarse- to fine-grained, dark-coloured intrusive igneous rock that usually occurs in sills, dikes and irregular masses and is always altered to some extent   
Nephelinite is a fine-grained or aphanitic igneous rock made up almost entirely of nepheline and clinopyroxene (variety augite).   

History
  
  

Origin
Scotland   
Brazil   

Discoverer
Unknown   
Unknown   

Etymology
From its occurrence near Teschen. now known as Cieszyn, Pol., Scotland   
from French néphéline, from Greek nephelē   

Class
Igneous Rocks   
Igneous Rocks   

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

Family
  
  

Group
Plutonic   
Plutonic   

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

Texture >>
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Definition of Teschenite and Nephelinite

The general Teschenite and Nephelinite definition can be stated as: Teschenite is coarse- to fine-grained, dark-coloured intrusive igneous rock that usually occurs in sills, dikes and irregular masses and is always altered to some extent. On the other hand, Nephelinite is a fine-grained or aphanitic igneous rock made up almost entirely of nepheline and clinopyroxene (variety augite).. Along with definition of Teschenite and Nephelinite, get to know about Properties of Teschenite and Nephelinite. Get to know more information about Teschenite and Nephelinite origin and discoverer, etymology and class.

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History of Teschenite and Nephelinite

The history of Teschenite and Nephelinite 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.

Teschenite and Nephelinite Origin and Discoverer

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

Etymology of Teschenite and Nephelinite

Along with Teschenite and Nephelinite definition, know more about the etymology of Teschenite and Nephelinite. Etymology of Teschenite and Nephelinite gives information about origin and formation of a particular rock. Know more about Formation of Teschenite and Formation of Nephelinite. The etymology of Teschenite is From its occurrence near Teschen. now known as Cieszyn, Pol., Scotland while that of Nephelinite is From its occurrence near Teschen. now known as Cieszyn, Pol., Scotland. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Teschenite and Nephelinite belong to Igneous Rocks. The sub-class, group and other categories of Teschenite and Nephelinite are listed below.

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For Nephelinite,

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