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Ijolite and Troctolite Definition


Troctolite and Ijolite Definition


Definition

Definition
Ijolite is an intrusive igneous rock which is composed mainly of nepheline and an alkali pyroxene, usually aegirine-augite   
Troctolite is a mafic intrusive rock type. It consists essentially of major but variable amounts of olivine and calcic plagioclase along with minor pyroxene. It is an olivine-rich anorthosite, or a pyroxene-depleted relative of gabbro   

History
  
  

Origin
Finland, Europe   
Unknown   

Discoverer
Unknown   
Christian Leopold von Buch   

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 German Troklotit, from Greek trōktēs, a marine fish (taken to be trout)   

Class
Igneous Rocks   
Igneous Rocks   

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

Family
  
  

Group
Plutonic   
Plutonic   

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

Texture >>
<< Summary

Definition of Ijolite and Troctolite

The general Ijolite and Troctolite 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, Troctolite is a mafic intrusive rock type. It consists essentially of major but variable amounts of olivine and calcic plagioclase along with minor pyroxene. It is an olivine-rich anorthosite, or a pyroxene-depleted relative of gabbro. Along with definition of Ijolite and Troctolite, get to know about Properties of Ijolite and Troctolite. Get to know more information about Ijolite and Troctolite origin and discoverer, etymology and class.

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History of Ijolite and Troctolite

The history of Ijolite and Troctolite 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 Troctolite Origin and Discoverer

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

Etymology of Ijolite and Troctolite

Along with Ijolite and Troctolite definition, know more about the etymology of Ijolite and Troctolite. Etymology of Ijolite and Troctolite gives information about origin and formation of a particular rock. Know more about Formation of Ijolite and Formation of Troctolite. 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 Troctolite 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 and Troctolite belong to Igneous Rocks. The sub-class, group and other categories of Ijolite and Troctolite are listed below.

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