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Nephelinite and Pseudotachylite Definition


Pseudotachylite and Nephelinite Definition


Definition

Definition
Nephelinite is a fine-grained or aphanitic igneous rock made up almost entirely of nepheline and clinopyroxene (variety augite).   
Very fine grained fault rock which is composed of glassy matrix that often contains inclusions of wall-rock fragments.   

History
  
  

Origin
Brazil   
USA   

Discoverer
Unknown   
Unknown   

Etymology
from French néphéline, from Greek nephelē   
From pseudo- +‎ tachylite, a glassy rock generated by frictional heat within faults.   

Class
Igneous Rocks   
Metamorphic Rocks   

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

Family
  
  

Group
Plutonic   
Not Applicable   

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

Texture >>
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Definition of Nephelinite and Pseudotachylite

The general Nephelinite and Pseudotachylite definition can be stated as: Nephelinite is a fine-grained or aphanitic igneous rock made up almost entirely of nepheline and clinopyroxene (variety augite).. On the other hand, Very fine grained fault rock which is composed of glassy matrix that often contains inclusions of wall-rock fragments.. Along with definition of Nephelinite and Pseudotachylite, get to know about Properties of Nephelinite and Pseudotachylite. Get to know more information about Nephelinite and Pseudotachylite origin and discoverer, etymology and class.

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History of Nephelinite and Pseudotachylite

The history of Nephelinite and Pseudotachylite 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.

Nephelinite and Pseudotachylite Origin and Discoverer

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

Etymology of Nephelinite and Pseudotachylite

Along with Nephelinite and Pseudotachylite definition, know more about the etymology of Nephelinite and Pseudotachylite. Etymology of Nephelinite and Pseudotachylite gives information about origin and formation of a particular rock. Know more about Formation of Nephelinite and Formation of Pseudotachylite. The etymology of Nephelinite is from French néphéline, from Greek nephelē while that of Pseudotachylite is from French néphéline, from Greek nephelē. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Nephelinite belongs to Igneous Rocks while Pseudotachylite belongs to Metamorphic Rocks. The sub-class, group and other categories of Nephelinite and Pseudotachylite are listed below.

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