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Rhyolite and Essexite  Definition


Essexite  and Rhyolite Definition


Definition

Definition
Rhyolite is a fine-grained igneous rock which is rich in silica   
Essexite which is also known as nepheline monzogabbro, is a dark gray or black holocrystalline plutonic Iigneous Rock   

History
  
  

Origin
North America   
USA   

Discoverer
Ferdinand von Richthofen   
Unknown   

Etymology
From German Rhyolit, from Greek rhuax lava stream + lithos stone   
From the locality in Essex County, Massachusetts,US   

Class
Igneous Rocks   
Igneous Rocks   

Sub-Class
Durable Rock, Hard Rock   
Durable Rock, Hard Rock   

Family
  
  

Group
Volcanic   
Plutonic   

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

Texture >>
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Definition of Rhyolite and Essexite 

The general Rhyolite and Essexite  definition can be stated as: Rhyolite is a fine-grained igneous rock which is rich in silica. On the other hand, Essexite which is also known as nepheline monzogabbro, is a dark gray or black holocrystalline plutonic Iigneous Rock. Along with definition of Rhyolite and Essexite , get to know about Properties of Rhyolite and Essexite . Get to know more information about Rhyolite and Essexite  origin and discoverer, etymology and class.

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History of Rhyolite and Essexite 

The history of Rhyolite and Essexite  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.

Rhyolite and Essexite  Origin and Discoverer

Rhyolite and Essexite  definition gives us a brief idea about the two rocks. In some cases, the definition also gives summary about the Formation of Rhyolite and Essexite . In this section, you will know about Rhyolite and Essexite  Origin and Discoverer. Origin of Rhyolite is North America whereas Origin of Essexite  is USA. It is interesting to know the name of Rhyolite and Essexite  discoverer. The Discoverer of Rhyolite is Ferdinand von Richthofen and the discoverer of Essexite  is Unknown.

Etymology of Rhyolite and Essexite 

Along with Rhyolite and Essexite  definition, know more about the etymology of Rhyolite and Essexite . Etymology of Rhyolite and Essexite  gives information about origin and formation of a particular rock. Know more about Formation of Rhyolite and Formation of Essexite . The etymology of Rhyolite is From German Rhyolit, from Greek rhuax lava stream + lithos stone while that of Essexite  is From German Rhyolit, from Greek rhuax lava stream + lithos stone. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Rhyolite and Essexite  belong to Igneous Rocks. The sub-class, group and other categories of Rhyolite and Essexite  are listed below.

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