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Felsite and Gneiss Definition


Gneiss and Felsite Definition


Definition

Definition
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   
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   

History
  
  

Discoverer
Unknown   
Unknown   

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

Class
Igneous Rocks   
Metamorphic Rocks   

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

Family
  
  

Group
Volcanic   
Not Applicable   

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

Texture >>
<< Summary

Definition of Felsite and Gneiss

The general Felsite and Gneiss definition can be stated as: 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. On the other hand, 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. Along with definition of Felsite and Gneiss, get to know about Properties of Felsite and Gneiss. Get to know more information about Felsite and Gneiss origin and discoverer, etymology and class.

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History of Felsite and Gneiss

The history of Felsite and Gneiss 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.

Felsite and Gneiss Origin and Discoverer

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

Etymology of Felsite and Gneiss

Along with Felsite and Gneiss definition, know more about the etymology of Felsite and Gneiss. Etymology of Felsite and Gneiss gives information about origin and formation of a particular rock. Know more about Formation of Felsite and Formation of Gneiss. The etymology of Felsite is From English feldspar and -ite while that of Gneiss is From English feldspar and -ite. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Felsite belongs to Igneous Rocks while Gneiss belongs to Metamorphic Rocks. The sub-class, group and other categories of Felsite and Gneiss are listed below.

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For Gneiss,

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