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Gneiss and Appinite Definition


Appinite 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   
Appinite is an igneous rock in which the crystals are so fine grained that individual minerals cannot be easily distinguished   

History
  
  

Discoverer
Unknown   
Unknown   

Etymology
From the Middle High German verb gneist (to spark; so called because the rock glitters)   
From the variety of Lamprophyre Greek lampros bright and shining + porphureos purple   

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   
Coarse Grained Rock, Fine Grained Rock, Opaque Rock   

Texture >>
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Definition of Gneiss and Appinite

The general Gneiss and Appinite 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, Appinite is an igneous rock in which the crystals are so fine grained that individual minerals cannot be easily distinguished. Along with definition of Gneiss and Appinite, get to know about Properties of Gneiss and Appinite. Get to know more information about Gneiss and Appinite origin and discoverer, etymology and class.

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History of Gneiss and Appinite

The history of Gneiss and Appinite 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 Appinite Origin and Discoverer

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

Etymology of Gneiss and Appinite

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

For Gneiss,

For Appinite,

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