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Rhyodacite and Borolanite Definition


Borolanite and Rhyodacite Definition


Definition

Definition
Rhyodacite is an extrusive volcanic rock intermediate in composition between dacite and rhyolite   
Borolanite is a variety of Nepheline Syenite and belongs to igneous rocks and contains nepheline-alkali feldspar pseudomorphs which occur as conspicuous white spots in the dark rock matrix   

History
  
  

Origin
USA   
Scotland   

Discoverer
Unknown   
Unknown   

Etymology
Rhyo lite + dacite : a rock intermediate between rhyolite and dacite that is the extrusive equivalent of granodiorite   
From Alkalic Igneous complex near Loch Borralan in northwest Scotland   

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   
Fine Grained Rock, Opaque Rock   

Texture >>
<< Summary

Definition of Rhyodacite and Borolanite

The general Rhyodacite and Borolanite definition can be stated as: Rhyodacite is an extrusive volcanic rock intermediate in composition between dacite and rhyolite. On the other hand, Borolanite is a variety of Nepheline Syenite and belongs to igneous rocks and contains nepheline-alkali feldspar pseudomorphs which occur as conspicuous white spots in the dark rock matrix. Along with definition of Rhyodacite and Borolanite, get to know about Properties of Rhyodacite and Borolanite. Get to know more information about Rhyodacite and Borolanite origin and discoverer, etymology and class.

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History of Rhyodacite and Borolanite

The history of Rhyodacite and Borolanite 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 Borolanite Origin and Discoverer

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

Etymology of Rhyodacite and Borolanite

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

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