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Gneiss and Nepheline Syenite Definition


Nepheline Syenite and Gneiss Definition


Definition

Definition
Gneiss is a common and widely distributed type of rock formed by high-grade regional metamorphic processes from pre-existing formations that were originally either igneous or sedimentary rocks   
Nepheline Syenite is a holocrystalline plutonic rock resembling syenite but containing nepheline and lacking quartz   

History
  
  

Discoverer
Unknown   
Unknown   

Etymology
From the Middle High German verb gneist (to spark; so called because the rock glitters)   
From origin of a Palaeozoic nepheline syenite from northern Shanxi Province, China   

Class
Metamorphic Rocks   
Igneous Rocks   

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

Family
  
  

Group
Not Applicable   
Plutonic   

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

Texture >>
<< Summary

Definition of Gneiss and Nepheline Syenite

The general Gneiss and Nepheline Syenite definition can be stated as: Gneiss is a common and widely distributed type of rock formed by high-grade regional metamorphic processes from pre-existing formations that were originally either igneous or sedimentary rocks. On the other hand, Nepheline Syenite is a holocrystalline plutonic rock resembling syenite but containing nepheline and lacking quartz. Along with definition of Gneiss and Nepheline Syenite, get to know about Properties of Gneiss and Nepheline Syenite. Get to know more information about Gneiss and Nepheline Syenite origin and discoverer, etymology and class.

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History of Gneiss and Nepheline Syenite

The history of Gneiss 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.

Gneiss and Nepheline Syenite Origin and Discoverer

Gneiss 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 Gneiss and Nepheline Syenite. In this section, you will know about Gneiss and Nepheline Syenite Origin and Discoverer. Origin of Gneiss and Nepheline Syenite are Unknown. It is interesting to know the name of Gneiss and Nepheline Syenite discoverer. The discoverer of Gneiss and Nepheline Syenite are Unknown.

Etymology of Gneiss and Nepheline Syenite

Along with Gneiss and Nepheline Syenite definition, know more about the etymology of Gneiss and Nepheline Syenite. Etymology of Gneiss and Nepheline Syenite gives information about origin and formation of a particular rock. Know more about Formation of Gneiss and Formation of Nepheline Syenite. The etymology of Gneiss is From the Middle High German verb gneist (to spark; so called because the rock glitters) while that of Nepheline Syenite is From the Middle High German verb gneist (to spark; so called because the rock glitters). The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Gneiss belongs to Metamorphic Rocks while Nepheline Syenite belongs to Igneous Rocks. The sub-class, group and other categories of Gneiss and Nepheline Syenite are listed below.

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