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Chert and Ijolite Definition


Ijolite and Chert Definition


Definition

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

History
  
  

Origin
Unknown   
Finland, Europe   

Discoverer
Unknown   
Unknown   

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

Class
Sedimentary Rocks   
Igneous Rocks   

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

Family
  
  

Group
Not Applicable   
Plutonic   

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

Texture >>
<< Summary

Definition of Chert and Ijolite

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

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History of Chert and Ijolite

The history of Chert and Ijolite 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.

Chert and Ijolite Origin and Discoverer

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

Etymology of Chert and Ijolite

Along with Chert and Ijolite definition, know more about the etymology of Chert and Ijolite. Etymology of Chert and Ijolite gives information about origin and formation of a particular rock. Know more about Formation of Chert and Formation of Ijolite. The etymology of Chert is From flint-like quartz, 1670s, of unknown origin- a local term, which has been taken into geological use while that of Ijolite is From flint-like quartz, 1670s, of unknown origin- a local term, which has been taken into geological use. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Chert belongs to Sedimentary Rocks while Ijolite belongs to Igneous Rocks. The sub-class, group and other categories of Chert and Ijolite are listed below.

For Chert,

For Ijolite,

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