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Nephelinite and Boninite Definition


Boninite and Nephelinite Definition


Definition

Definition
Nephelinite is a fine-grained or aphanitic igneous rock made up almost entirely of nepheline and clinopyroxene (variety augite).   
Boninite is a mafic extrusive rock which is high in magnesium and silica content, formed in fore-arc environments, typically during the early stages of subduction   

History
  
  

Origin
Brazil   
Japan   

Discoverer
Unknown   
Unknown   

Etymology
from French néphéline, from Greek nephelē   
From its occurrence in the Izu-Bonin arc south of Japan   

Class
Igneous Rocks   
Igneous Rocks   

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

Family
  
  

Group
Plutonic   
Volcanic   

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

Texture >>
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Definition of Nephelinite and Boninite

The general Nephelinite and Boninite 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, Boninite is a mafic extrusive rock which is high in magnesium and silica content, formed in fore-arc environments, typically during the early stages of subduction. Along with definition of Nephelinite and Boninite, get to know about Properties of Nephelinite and Boninite. Get to know more information about Nephelinite and Boninite origin and discoverer, etymology and class.

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History of Nephelinite and Boninite

The history of Nephelinite and Boninite 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 Boninite Origin and Discoverer

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

Etymology of Nephelinite and Boninite

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

For Nephelinite,

For Boninite,

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