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Essexite  and Chert Definition


Chert and Essexite  Definition


Definition

Definition
Essexite which is also known as nepheline monzogabbro, is a dark gray or black holocrystalline plutonic Iigneous Rock   
Chert is a hard, dark, opaque sedimentary rock which is composed of silica with an amorphous fine-grained texture   

History
  
  

Origin
USA   
Unknown   

Discoverer
Unknown   
Unknown   

Etymology
From the locality in Essex County, Massachusetts,US   
From flint-like quartz, 1670s, of unknown origin- a local term, which has been taken into geological use   

Class
Igneous Rocks   
Sedimentary Rocks   

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

Family
  
  

Group
Plutonic   
Not Applicable   

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

Texture >>
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Definition of Essexite  and Chert

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

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History of Essexite  and Chert

The history of Essexite  and Chert 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.

Essexite  and Chert Origin and Discoverer

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

Etymology of Essexite  and Chert

Along with Essexite  and Chert definition, know more about the etymology of Essexite  and Chert. Etymology of Essexite  and Chert gives information about origin and formation of a particular rock. Know more about Formation of Essexite  and Formation of Chert. The etymology of Essexite  is From the locality in Essex County, Massachusetts,US while that of Chert is From the locality in Essex County, Massachusetts,US. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Essexite  belongs to Igneous Rocks while Chert belongs to Sedimentary Rocks. The sub-class, group and other categories of Essexite  and Chert are listed below.

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