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Nephelinite and Argillite Definition


Argillite and Nephelinite Definition


Definition

Definition
Nephelinite is a fine-grained or aphanitic igneous rock made up almost entirely of nepheline and clinopyroxene (variety augite).   
Argillites are highly compact sedimentary or slightly metamorphosed rocks that consist largely or wholly of particles of clay or silt but lack the fissility of shale or the cleavage characteristic of slate   

History
  
  

Origin
Brazil   
Unknown   

Discoverer
Unknown   
Unknown   

Etymology
from French néphéline, from Greek nephelē   
From Latin Argilla (clay) and -ite in English which became agrilla+ -ite = Argillite   

Class
Igneous Rocks   
Sedimentary Rocks   

Sub-Class
Durable Rock, Hard Rock   
Durable Rock, Soft 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 Argillite

The general Nephelinite and Argillite 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, Argillites are highly compact sedimentary or slightly metamorphosed rocks that consist largely or wholly of particles of clay or silt but lack the fissility of shale or the cleavage characteristic of slate. Along with definition of Nephelinite and Argillite, get to know about Properties of Nephelinite and Argillite. Get to know more information about Nephelinite and Argillite origin and discoverer, etymology and class.

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History of Nephelinite and Argillite

The history of Nephelinite and Argillite 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 Argillite Origin and Discoverer

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

Etymology of Nephelinite and Argillite

Along with Nephelinite and Argillite definition, know more about the etymology of Nephelinite and Argillite. Etymology of Nephelinite and Argillite gives information about origin and formation of a particular rock. Know more about Formation of Nephelinite and Formation of Argillite. The etymology of Nephelinite is from French néphéline, from Greek nephelē while that of Argillite 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 Argillite belongs to Sedimentary Rocks. The sub-class, group and other categories of Nephelinite and Argillite are listed below.

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For Argillite,

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