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Gneiss and Felsite Definition


Felsite 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   
Felsite is a very fine grained volcanic rock that may or may not contain larger crystals and light colored rock that typically requires petrographic examination or chemical analysis for more precise definition   

History
  
  

Discoverer
Unknown   
Unknown   

Etymology
From the Middle High German verb gneist (to spark; so called because the rock glitters)   
From English feldspar and -ite   

Class
Metamorphic Rocks   
Igneous Rocks   

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

Family
  
  

Group
Not Applicable   
Volcanic   

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

Texture >>
<< Summary

Definition of Gneiss and Felsite

The general Gneiss and Felsite 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, Felsite is a very fine grained volcanic rock that may or may not contain larger crystals and light colored rock that typically requires petrographic examination or chemical analysis for more precise definition. Along with definition of Gneiss and Felsite, get to know about Properties of Gneiss and Felsite. Get to know more information about Gneiss and Felsite origin and discoverer, etymology and class.

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History of Gneiss and Felsite

The history of Gneiss and Felsite 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 Felsite Origin and Discoverer

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

Etymology of Gneiss and Felsite

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

For Gneiss,

For Felsite,

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