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Shoshonite and Essexite  Definition


Essexite  and Shoshonite Definition


Definition

Definition
Shoshonite is a basaltic rock, properly a potassic trachyandesite, composed of olivine, augite and plagioclase phenocrysts in a groundmass with calcic plagioclase and sanidine and some dark-colored volcanic glass   
Essexite which is also known as nepheline monzogabbro, is a dark gray or black holocrystalline plutonic Iigneous Rock   

History
  
  

Origin
Wyoming,USA   
USA   

Discoverer
Iddings   
Unknown   

Etymology
From the place of origin called Shoshone riverin Wyoming   
From the locality in Essex County, Massachusetts,US   

Class
Igneous Rocks   
Igneous Rocks   

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

Family
  
  

Group
Volcanic   
Plutonic   

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

Texture >>
<< Summary

Definition of Shoshonite and Essexite 

The general Shoshonite and Essexite  definition can be stated as: Shoshonite is a basaltic rock, properly a potassic trachyandesite, composed of olivine, augite and plagioclase phenocrysts in a groundmass with calcic plagioclase and sanidine and some dark-colored volcanic glass. 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 Shoshonite and Essexite , get to know about Properties of Shoshonite and Essexite . Get to know more information about Shoshonite and Essexite  origin and discoverer, etymology and class.

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History of Shoshonite and Essexite 

The history of Shoshonite 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.

Shoshonite and Essexite  Origin and Discoverer

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

Etymology of Shoshonite and Essexite 

Along with Shoshonite and Essexite  definition, know more about the etymology of Shoshonite and Essexite . Etymology of Shoshonite and Essexite  gives information about origin and formation of a particular rock. Know more about Formation of Shoshonite and Formation of Essexite . The etymology of Shoshonite is From the place of origin called Shoshone riverin Wyoming while that of Essexite  is From the place of origin called Shoshone riverin Wyoming. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Shoshonite and Essexite  belong to Igneous Rocks. The sub-class, group and other categories of Shoshonite and Essexite  are listed below.

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