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Chert and Nepheline Syenite Definition


Nepheline Syenite and Chert Definition


Definition

Definition
Chert is a hard, dark, opaque sedimentary rock which is composed of silica with an amorphous fine-grained texture   
Nepheline Syenite is a holocrystalline plutonic rock resembling syenite but containing nepheline and lacking quartz   

History
  
  

Discoverer
Unknown   
Unknown   

Etymology
From flint-like quartz, 1670s, of unknown origin- a local term, which has been taken into geological use   
From origin of a Palaeozoic nepheline syenite from northern Shanxi Province, China   

Class
Sedimentary Rocks   
Igneous Rocks   

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

Family
  
  

Group
Not Applicable   
Plutonic   

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

Texture >>
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Definition of Chert and Nepheline Syenite

The general Chert and Nepheline Syenite definition can be stated as: Chert is a hard, dark, opaque sedimentary rock which is composed of silica with an amorphous fine-grained texture. On the other hand, Nepheline Syenite is a holocrystalline plutonic rock resembling syenite but containing nepheline and lacking quartz. Along with definition of Chert and Nepheline Syenite, get to know about Properties of Chert and Nepheline Syenite. Get to know more information about Chert and Nepheline Syenite origin and discoverer, etymology and class.

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History of Chert and Nepheline Syenite

The history of Chert and Nepheline Syenite 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.

Chert and Nepheline Syenite Origin and Discoverer

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

Etymology of Chert and Nepheline Syenite

Along with Chert and Nepheline Syenite definition, know more about the etymology of Chert and Nepheline Syenite. Etymology of Chert and Nepheline Syenite gives information about origin and formation of a particular rock. Know more about Formation of Chert and Formation of Nepheline Syenite. The etymology of Chert is From flint-like quartz, 1670s, of unknown origin- a local term, which has been taken into geological use while that of Nepheline Syenite is From flint-like quartz, 1670s, of unknown origin- a local term, which has been taken into geological use. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Chert belongs to Sedimentary Rocks while Nepheline Syenite belongs to Igneous Rocks. The sub-class, group and other categories of Chert and Nepheline Syenite are listed below.

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For Nepheline Syenite,

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