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Ijolite and Chert Definition


Chert and Ijolite Definition


Definition

Definition
Ijolite is an intrusive igneous rock which is composed mainly of nepheline and an alkali pyroxene, usually aegirine-augite   
Chert is a hard, dark, opaque sedimentary rock which is composed of silica with an amorphous fine-grained texture   

History
  
  

Origin
Finland, Europe   
Unknown   

Discoverer
Unknown   
Unknown   

Etymology
From the first syllable of the Finnish words Ii-vaara, Iijoki, &c. commonly used geographical names in Finland, and the Gr. Xiflos, a stone   
From flint-like quartz, 1670s, of unknown origin- a local term, which has been taken into geological use   

Class
Igneous Rocks   
Sedimentary Rocks   

Sub-Class
Durable Rock, Medium Hardness Rock   
Durable Rock, Hard Rock   

Family
  
  

Group
Plutonic   
Not Applicable   

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

Texture >>
<< Summary

Definition of Ijolite and Chert

The general Ijolite and Chert definition can be stated as: Ijolite is an intrusive igneous rock which is composed mainly of nepheline and an alkali pyroxene, usually aegirine-augite. On the other hand, Chert is a hard, dark, opaque sedimentary rock which is composed of silica with an amorphous fine-grained texture. Along with definition of Ijolite and Chert, get to know about Properties of Ijolite and Chert. Get to know more information about Ijolite and Chert origin and discoverer, etymology and class.

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History of Ijolite and Chert

The history of Ijolite and Chert 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.

Ijolite and Chert Origin and Discoverer

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

Etymology of Ijolite and Chert

Along with Ijolite and Chert definition, know more about the etymology of Ijolite and Chert. Etymology of Ijolite and Chert gives information about origin and formation of a particular rock. Know more about Formation of Ijolite and Formation of Chert. The etymology of Ijolite is From the first syllable of the Finnish words Ii-vaara, Iijoki, &c. commonly used geographical names in Finland, and the Gr. Xiflos, a stone while that of Chert is From the first syllable of the Finnish words Ii-vaara, Iijoki, &c. commonly used geographical names in Finland, and the Gr. Xiflos, a stone. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Ijolite belongs to Igneous Rocks while Chert belongs to Sedimentary Rocks. The sub-class, group and other categories of Ijolite and Chert are listed below.

For Ijolite,

For Chert,

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