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Rhyodacite and Ijolite Definition


Ijolite and Rhyodacite Definition


Definition

Definition
Rhyodacite is an extrusive volcanic rock intermediate in composition between dacite and rhyolite   
Ijolite is an intrusive igneous rock which is composed mainly of nepheline and an alkali pyroxene, usually aegirine-augite   

History
  
  

Origin
USA   
Finland, Europe   

Discoverer
Unknown   
Unknown   

Etymology
Rhyo lite + dacite : a rock intermediate between rhyolite and dacite that is the extrusive equivalent of granodiorite   
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
Igneous Rocks   
Igneous Rocks   

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

Family
  
  

Group
Volcanic   
Plutonic   

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

Texture >>
<< Summary

Definition of Rhyodacite and Ijolite

The general Rhyodacite and Ijolite definition can be stated as: Rhyodacite is an extrusive volcanic rock intermediate in composition between dacite and rhyolite. 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 Rhyodacite and Ijolite, get to know about Properties of Rhyodacite and Ijolite. Get to know more information about Rhyodacite and Ijolite origin and discoverer, etymology and class.

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History of Rhyodacite and Ijolite

The history of Rhyodacite 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.

Rhyodacite and Ijolite Origin and Discoverer

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

Etymology of Rhyodacite and Ijolite

Along with Rhyodacite and Ijolite definition, know more about the etymology of Rhyodacite and Ijolite. Etymology of Rhyodacite and Ijolite gives information about origin and formation of a particular rock. Know more about Formation of Rhyodacite and Formation of Ijolite. The etymology of Rhyodacite is Rhyo lite + dacite : a rock intermediate between rhyolite and dacite that is the extrusive equivalent of granodiorite while that of Ijolite is Rhyo lite + dacite : a rock intermediate between rhyolite and dacite that is the extrusive equivalent of granodiorite. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Rhyodacite and Ijolite belong to Igneous Rocks. The sub-class, group and other categories of Rhyodacite and Ijolite are listed below.

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